GE MM3 Instruction Manual

Download

Page 1

GE Power Management

MM3

RUNNING

STOPPED

TRIPPED

ALARM

RELAY ARELAY A

RELAY BRELAY B

AUX RELAY 1AUX RELAY 1

AUX RELAY 2AUX RELAY 2

MOTOR MANAGER 3

Instruction Manual

ACTUALACTUAL

SETPOINTSETPOINT

AUTAUTO

STSTOREORE

RESETRESET

MESSAGE

VALUE

MANUALMANUAL

STOP

Units must be powered up at least once per year to avoid deterioration of electrolytic capacitors and subsequent relay failure.

NOTE

GE Power Management

215 Anderson Avenue, Markham, Ontario Canada L6E 1B3 Tel: (905) 294-6222 Fax: (905) 294-8512 Internet:

KWWSZZZ*(LQGXVWULDOFRPSP

STARTASTART

STARTBSTART

Manufactured under an

ISO9001 Registered system.

Page 2

Page 3

These instructions do not purport to cover all details or variations in equipment nor provide for every possible contingency to be met in connection with installation, operation, or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser’s purpose, the matter should be referred to the General Electric Company.

To the extent required the products described herein meet applicable ANSI, IEEE, and NEMA standards; but no s uch assurance is given with res pect to local codes and ordin ances because they vary greatly.

Page 4

Page 5

1. INTRODUCTION

2. INSTALLATION

1.1 OVERVIEW

1.1.1 DESCRIPTION..........................................................................................1-1

1.1.2 FEATURES................................................................................................1-1

1.1.3 ORDER CODES........................................................................................1-3

1.1.4 ACCESSORIES.........................................................................................1-3

1.2 TECHNICAL SPECIFICATIONS

1.2.1 MM3 SPECIFICATIONS.......................................... ..................... ............. 1-4

2.1 MOUNTING

2.1.1 DESCRIPTION..........................................................................................2-1

2.2 WIRING

2.2.1 TYPICAL WIRING DIAGRAM....................................................................2-3

2.3 INPUTS AND OUTPUTS

2.3.1 OVERVIEW................................................................................................ 2-4

a PHASE CT INPUTS................................................................................... 2-4

b GROUND FAULT CT INPUT (19/20)...................................... ...................2-4

c SUPPLY VOLTAGE (22/23/24)................................................................. 2-4

d GROUND (21/48) SURGE......................................................................... 2-4

e EXTERNAL CONNECTIONS..................................................... ...............2-4

f THERMISTOR INPUT (17/18)................................................................... 2-4

ANALOG INPUT (28/29)............................................................................2-4

h AUX 2 COIL (34/35)...................................................................................2-5

i OUTPUT RELAYS (36 - 47) ......................................................................2-5

j SERIAL COMMUNICATION PORT (25/26/27).......................................... 2-5

k SWITCH INPUTS (1 - 16).......................................................................... 2-6

l PROGRAMMABLE SWITCH INPUTS (1 - 10).......................................... 2-6

m STOP (11).................................................................................................. 2-6

n START A (12) AND START B (13)............................................................ 2-6

o LOCAL ISOLATOR N/O (14) ..................................................................... 2-6

p CONTACTOR STATUS (A: 15, B: 16) ....................................................... 2-6

q DIELECTRIC STRENGTH TESTING ........................................................2-7

3. HARDWARE

3.1 USER INTERFACE

3.1.1 DESCRIPTION..........................................................................................3-1

3.1.2 MESSAGE DISPLAY.. .. .. ......................... .................................... ............. . 3-1

3.1.3 INDICATOR LEDS..................................................................................... 3-2

3.2 KEYPAD

3.2.1 SETPOINTS KEY ...................................................................................... 3-3

3.2.2 ACTUAL VALUES KEY.............................................................................3-3

3.2.3 STORE KEY..............................................................................................3-4

3.2.4 ST OP KEY........................................................................ ...................... .. . 3-4

3.2.5 RESET KEY...............................................................................................3-4

3.2.6 START A KEY............................................................................................ 3-4

3.2.7 START B KEY............................................................................................ 3-4

3.2.8 MESSAGE UP/DOWN KEYS....................................................................3-5

3.2.9 MESSAGE LEFT/RIGHT KEYS................................................................. 3-5

3.2.10 VALUE UP/DOWN KEYS..........................................................................3-5

3.3 HARDWARE DESCRIPTION

3.3.1 MM3 DESIGN................................................................................. ........... 3-6

GE Power Management MM3 Motor Manager 3

Page 6

TABLE OF CONTENTS

4. SETPOINTS

4.1 OVERVIEW

4.1.1 DESCRIPTION ..........................................................................................4-1

4.1.2 SETPOINT MESSAGE ABBREVIATIONS ................................................4-1

4.1.3 SETPOINTS MESSAGE SUM MA R Y......... ............................................... 4-2

4.2 S1 CONFIGURATION

4.2.1 DESCRIPTION ..........................................................................................4-3

4.2.2 COMMUNICATIONS ................................................................................. 4-3

4.2.3 MOTOR IDENTIFICATION................................. ..................... ..................4-4

4.2.4 STARTER............................................... ..................... ..............................4-4

4.2.5 CT/VT INPUTS..........................................................................................4-6

4.2.6 THERMISTOR........................................................................................... 4-7

4.2.7 FAULT MODE........................................... ................................................. 4-7

4.2.8 STATISTICS...................... ........................................................................4-8

4.2.9 PROGRAMMABLE MESSAGE.................................................................4-8

4.2.10 PREFERENCES........................................................................................4-8

4.3 S2 PROTECTION

4.3.1 DESCRIPTION ..........................................................................................4-9

4.3.2 MOTOR PROTECTION – THERMAL......................................................4-10

4.3.3 MOTOR PROTECTION – GROUND FAULT...........................................4-11

4.3.4 MOTOR PROTECTION – OPTIONS....................................................... 4-13

4.3.5 LOAD PROTECTION............................................................................... 4-15

4.3.6 UNDER/OVERVOLTAGE PROTECTION ................. .............................. 4-17

4.4 S3 PROCESS

4.4.1 DESCRIPTION ........................................................................................4-18

4.4.2 PROGRAMMABLE INPUTS.................................................................... 4-19

4.4.3 INTERLOCK NAMES............................................................................... 4-23

4.4.4 STOP CONFIGURATION........................................................................4-24

4.4.5 ANALOG INPUT............................ ..................... ..................... ................4-24

4.4.6 PROCESS OPTIONS........ .......................................... ..................... ....... 4-26

4.5 S4 CONTROL

4.5.1 DESCRIPTION ........................................................................................4-27

4.5.2 UNDERVOLTAGE AUTO RESTART ......................................................4-27

4.5.3 AUX 1/2 RELAY CONFIG........................................................................4-28

4.6 S5 MONITORING

4.6.1 DESCRIPTION ........................................................................................4-31

4.6.2 PLANT CONDITION............................. ..................... ..................... ......... 4-31

4.6.3 PRESET COUNTERS AND TIMERS ...................................................... 4-32

4.7 S6 FACTORY DATA

4.7.1 DESCRIPTION ........................................................................................4-33

4.7.2 PRODUCT FIRMWARE IDENTIFICATION ............................................. 4-33

4.7.3 PRODUCT MODEL IDENTIFICATION....................................................4-34

4.7.4 FACTORY SERVICE DATA....................................................................4-34

4.8 MM3 STANDARD OVERLOAD CURVES

4.8.1 OVERLOAD CURVE TRIP TIMES.......................................................... 4-35

4.9 NEMA COMPATIBLE OVERLOAD CURVES

4.9.1 NEMA CURVE TRIP TIMES.................................................................... 4-37

4.10 S7 TESTING

4.10.1 DESCRIPTION ........................................................................................4-39

4.10.2 TEST CONFIGURATION.........................................................................4-39

4.10.3 TEST RELAYS AND LEDS......................................................................4-40

4.10.4 CURRENT SIMULATION ............................................ ............................ 4-41

4.10.5 ANALOG OUTPUT SIMULATION........................................................... 4-42

4.10.6 ANALOG INPUT SIMULATION ............................................................... 4-43

MM3 Motor Manager 3

GE Power Management

Page 7

TABLE OF CONTENTS

4.10.7 SWITCH INPUTS SIMULATION.............................................................. 4-44

4.10.8 THERMISTOR SIMULATION.................................................................. 4-46

5. ACTUAL VALUES

5.1 OVERVIEW

5.1.1 DESCRIPTION..........................................................................................5-1

5.1.2 DEFAULT MESSAGE SELECTION ..........................................................5-1

5.1.3 ACTUAL VALUES MESSAGE ABBREVIATIONS.....................................5-2

5.1.4 ACTUAL VALUES MESSAGE SUMMARY ............................................... 5-2

5.2 ACTUAL VALUES MESSAGES

5.3 A1 DATA

5.3.1 DESCRIPTION..........................................................................................5-3

5.3.2 MOTOR DATA......................................................... ..................................5-3

5.3.3 PROCESS DATA....................................................................................... 5-4

5.3.4 PR OGRAMMABLE MESSAG E ....... .............................................. .. .......... 5-4

5.4 A2 STATUS

5.4.1 DESCRIPTION..........................................................................................5-5

5.4.2 TRIP DATA ................................................................................................ 5-5

5.4.3 ALARM DATA............................................................................................5-6

5.4.4 MOTOR STATUS ...................................................................................... 5-8

5.5 A3 INPUTS

5.5.1 DESCRIPTION..........................................................................................5-9

5.5.2 INPUT CONTACTS STATUS............................................................. ....... 5-9

5.6 A4 STATISTICS

5.6.1 DESCRIPTION........................................................................................5-11

5.6.2 TIMERS................................................................................................... 5-11

5.6.3 COUNTERS.............................................................................................5-12

6. COMMUNICATIONS

6.1 MM3 MODBUS PROTOCOL

6.1.1 OVERVIEW................................................................................................ 6-1

6.1.2 ELECTRICAL INTERFACE.................................................... ...................6-1

6.1.3 DATA FRAME FORMAT AND DATA RATE.............................................. 6-1

6.1.4 DATA PACKET FORMAT.................................. ........................................6-2

6.1.5 ER ROR CHECK I N G ......... ........... .. ....................... .. ....................... .. .......... 6-2

a CRC-16 ALGORITHM................................................................................ 6-3

6.1.6 TIMING ...................................................................................................... 6-3

6.2 MM3 SUPPORTED FUNCTIONS

6.2.1 DESCRIPTION..........................................................................................6-4

6.2.2 FUNCTION CODE 01H .............................................................................6-4

6.2.3 FUNCTION CODE 03H .............................................................................6-5

6.2.4 FUNCTION CODE 04H .............................................................................6-6

6.2.5 FUNCTION CODE 05H .............................................................................6-7

6.2.6 FUNCTION CODE 06H .............................................................................6-8

6.2.7 FUNCTION CODE 07H .............................................................................6-9

6.2.8 FUNCTION CODE 08H ...........................................................................6-10

6.2.9 FUNCTION CODE 10H ...........................................................................6-11

6.3 ERROR RESPONSES

6.3.1 DESCRIPTION........................................................................................6-12

6.4 APPLICATIONS

6.4.1 PERFORMING COMMANDS USING FUNCTION CODE 10H............... 6-13

GE Power Management MM3 Motor Manager 3

iii

Page 8

TABLE OF CONTENTS

6.4.2 STORING COMMUNICATIONS ADDRESS USING THE BROADCAST

COMMAND..............................................................................................6-14

6.4.3 USING THE USER DEFINABLE MEMORY MAP ................................... 6-15

6.4.4 USER DEFINABLE MEMORY MAP DEFAULT VALUES .......................6-16

6.5 MEMORY MAP

6.5.1 DESCRIPTION ........................................................................................6-18

6.5.2 MEMORY MAP TABLE............................................................................6-18

6.6 DATA FORMATS

6.6.1 DATA FORMATS TABLE ........................................................................ 6-37

7. TESTING

8. MM3PC SOFTWARE

7.1 INJECTION TESTING

7.1.1 PRIMARY INJECTION TESTING .............................................................. 7-1

7.1.2 SECONDARY INJECTION TESTING........................................................ 7-1

7.2 FUNCTIONAL TESTS

7.2.1 PHASE CURRENT FUNCTIONS.................................... ....................... ... 7-2

7.2.2 UN BALANCE EXAMPLES .. .. ............. .............. .. .. ............. ............. ............ 7 - 3

a EXAMPLE #1.............................................................................................7-3

b EXAMPLE #2.............................................................................................7-3

7.2.3 GROUND FAULT CURRENT FUNCTIONS............ ......................... ......... 7-3

7.2.4 INPUT FUNCTIONS................................. ................................................. 7-4

7.2.5 THERMISTOR INPUT TESTS...................................................................7-4

7.2.6 POWER FAIL TEST...................................................................................7-4

8.1 OVERVIEW

8.1.1 DESCRIPTION ..........................................................................................8-1

8.1.2 HARDWARE & SOFTWARE REQUIREMENTS ....................................... 8-1

8.1.3 CHECKING IF INSTALLATION/UPGRADE IS REQUIRED......................8-2

8.2 INSTALLING MM3PC

8.2.1 SOFTWARE INSTALLATION/UPGRADE .................................................8-3

8.3 CONFIGURATION

8.3.1 CONFIGURING MM3PC ...........................................................................8-4

8.3.2 MM3PC PROGRAM MENUS ....................................................................8-5

8.4 USING MM3PC

8.4.1 SAVING SETPOINTS TO A FILE................................ ..............................8-6

8.4.2 MM3 FIRMWARE UPGRADES................................................................. 8-7

8.4.3 LOADING SETPOINT FILES.....................................................................8-8

8.4.4 ENTERING SETPOINTS........................................................................... 8-9

8.4.5 VIEWING ACTUAL VALUES................................................................... 8-10

8.5 CHASSIS MOUNT UNITS

8.5.1 DESCRIPTION ........................................................................................8-12

8.5.2 SETTING THE BAUD RATE AND PARITY.............................................8-12

9. STARTER TYPES

9.1 FV NON-REVERSING STARTER

9.1.1 DESCRIPTION ..........................................................................................9-1

9.1.2 MM3 SEQUENCES ........................................................... ..................... ... 9-1

9.2 FV REVERSING STARTER

9.2.1 DESCRIPTION ..........................................................................................9-3

MM3 Motor Manager 3

GE Power Management

Page 9

TABLE OF CONTENTS

9.2.2 MM3 SEQUENCES ..................................................... ..................... ......... 9-4

9.2.3 NOTES.......... ..................... ............................................................. ........... 9-4

9.3 TWO SPEED STARTER

9.3.1 DESCRIPTION..........................................................................................9-6

9.3.2 MM3 SEQUENCES ..................................................... ..................... ......... 9-7

9.4 SLIP RING STARTER

9.4.1 DESCRIPTION........................................................................................9-11

9.4.2 MM3 SEQUENCES ..................................................... ..................... ....... 9-12

9.5 PRIMARY RESISTANCE STARTER

9.5.1 DESCRIPTION........................................................................................9-14

9.5.2 MM3 SEQUENCE.................................................................................... 9-15

9.6 INVERTER STARTER

9.6.1 DESCRIPTION........................................................................................9-17

9.6.2 MM3 SEQUENCES ..................................................... ..................... ....... 9-17

9.7 AUTOTRANSFORMER OPEN TRANSITION STARTER

9.7.1 DESCRIPTION........................................................................................9-19

9.7.2 MM3 SEQUENCES ..................................................... ..................... ....... 9-20

9.8 AUTOTRANSFORMER CLOSED TRANSITION STARTER

9.8.1 DESCRIPTION........................................................................................9-23

9.8.2 MM3 SEQUENCES ..................................................... ..................... ....... 9-24

9.9 PART WINDING STARTER

9.9.1 DESCRIPTION........................................................................................9-27

9.9.2 MM3 SEQUENCE.................................................................................... 9-27

9.10 WYE-DELTA OPEN TRANSITION STARTER

9.10.1 DESCRIPTION........................................................................................9-28

9.10.2 MM3 SEQUENCES ..................................................... ..................... ....... 9-29

9.11 WYE-DELTA CLOSED TRANSITION STARTER

9.11.1 DESCRIPTION........................................................................................9-31

9.11.2 MM3 SEQUENCE.................................................................................... 9-32

9.12 DUTY/STANDBY STARTER

9.12.1 DESCRIPTION........................................................................................9-34

9.12.2 MM3 SEQUENCES ..................................................... ..................... ....... 9-34

9.13 SOFT STARTER

9.13.1 DESCRIPTION........................................................................................9-36

9.13.2 MM3 SEQUENCE.................................................................................... 9-36

10. CONTROL WIRE APPLICATIONS

10.1 TWO WIRE CONTROL

10.1.1 DESCRIPTION........................................................................................10-1

10.1.2 CONTROL OPERATION............................................................ ............. 10-1

10.2 HAND/OFF/AUTO CONFIGURATION

10.2.1 2-WIRE HAND / 2-WIRE AUTO...............................................................10-3

10.2.2 CONTROL OPERATION............................................................ ............. 10-3

10.2.3 3-WIRE HAND / 2-WIRE AUTO...............................................................10-5

10.2.4 CONTROL OPERATION............................................................ ............. 10-5

10.2.5 3 WIRE HAND / 3 WIRE AUTO .............................................................. 10-7

10.2.6 CONTROL OPERATION............................................................ ............. 10-7

10.3 HAND/AUTO CONFIGURATION

10.3.1 3-WIRE HAND / 2-WIRE AUTO...............................................................10-9

10.3.2 CONTROL OPERATION............................................................ ............. 10-9

GE Power Management MM3 Motor Manager 3

Page 10

TABLE OF CONTENTS

A. MM3 COMMISSIONING

SUMMARY

B. FREQUENTLY ASKED

QUESTIONS

C. DO’S AND DONT’S

D. ASYMMETRICAL

STARTING CURRENT

A.1 COMMISIONING SUMMARY

A.1.1 DESCRIPTION ..........................................................................................A-1

B.1 MM3 FAQ

B.1.1 QUESTIONS AND ANSWERS ..................................................................B-1

C.1 DO’S AND DONT’S

C.1.1 CHECKLIST...............................................................................................C-1

a MM3 GROUNDING............................................................................. .......C-1

b GROUNDING OF PHASE AND GROUND CTS............................. ...........C-1

c RS485 COMMUNICATIONS PORT ..........................................................C-1

d SWITCH INPUTS.................................. ..................... ..................... ...........C-2

e THERMISTOR AND ANALOG INPUTS ....................................................C-2

f STOP SWITCH INPUT ..............................................................................C-2

CONTACTOR STATUS FEEDBACK............ .......................................... ...C-2

D.1 ASYMMETRICAL CURRENT

D.1.1 OVERVIEW................................................................................................D-1

E. CT ISOLATION

F. TABLES AND FIGURES

G. EU DECLARATION OF

CONFORMITY

H. WARRANTY

E.1 CT ISOLATION

E.1.1 MM3 CT WITHSTAND...................... ..................... ..................... ...............E-1

E.1.2 CT SIZE AND SATURATION....................................................................E-1

F.1 TABLES AND FIGURES

F.1.1 LIST OF TABLES................... ........................................ ..................... .......F-1

F.1.2 LIST OF FIGURES ....................................................................................F-1

G.1 EU DECLARATION OF CONFORMITY

H.1 WARRANTY

H.1.1 GE POWER MANAGEMENT WARRANTY...............................................H-1

MM3 Motor Manager 3

GE Power Management

Page 11

1 INTRODUCTION 1.1 OVERVIEW

1 INTRODUCTION 1.1 OVERVIEW 1.1.1 DESCRIPTION

The MM3 combines control functio ns normally fou nd in a low vo ltage motor c ontrol center (MCC) with motor protection. This comp ac t, mi cr op ro ce ss or ba se d dev i ce , pr ov ide s sop h isti ca ted con t rol a nd protective relayin g at significant cost savings over an MCC design using discrete devices.

Standard features simplify maintenance and plant expansion. One MM3 is required for every starter unit in the MCC. The contactor can be energi zed an d de-ener gized usi ng the MM3's d irect-wir ed inputs or via the s erial port. Full voltage non-rever sing, full voltage Reversing, two-speed, autotransformer, inverter, wye-delta, sli p ring, and part winding type starters may be completely controlled by the MM3 using the two contactor outputs.

Motor protection is inc luded for t he most c ommon c auses of fai lure to prev ent cost ly shutdown s and rewi nds. These include three-phase overload, stalled rotor, ground fault and loss of phase.

A two-wire RS485 M odbus communic ations port is p rovided for high speed communic ations with a c omplete line-up of MCCs. A ny MM3 may b e interrogated on demand to d etermine both ac tual and setpoi nt operating parameters. Fast response time to a request for alarm or trip status makes real time control of a complete process possible. Statistical recording of running hours and number of starts and trips assists with predictive maintenance scheduling.

1.1.2 FEATURES

The MM3 has been developed with economy in mind. The customer is able to choose from different options to achieve maximum benef it from the relay when integrated into the process environment. The standard MM 3 comes with three-ph ase ov er load protection (49/51) , si ng le- ph as e, 4 co ntr ol inputs (Start, Stop , Lo ca l Is olator, Contactor A status) plus 2 programmable inputs. The full version adds the following additional features:

•2

contactor control (wye/delta, two speed, reversing, etc.) including all timers, relays and control inputs

• Undercurrent/underpower protection (37)

• Thermistor (49) input which accepts PTC and NTC thermistor types

• Analog input/output

• 6 more programmable inputs plus 2 control inputs

T able 1–1: MM3 OPTIONS

OPTION 1 (STANDARD) OPTION 2 (FULL)

Contactor A Contactor A Serial Communications Serial Communications 4 Programmable Inputs 10 Programmable Inputs 4 Control Inputs 6 Control Inputs 3 Phase Inputs 3 Phase Inputs 1 Ground Fault Input 1 Ground Fault Input Aux 1 Relay Aux 1 Relay Aux 2 / ESD Relay Contactor B VT Input Aux 2 / ESD Relay

VT Input Thermistor Input Analog In put Analog Outp ut

GE Power Management MM3 Motor Manager 3 1-1

Page 12

1.1 OVERVIEW 1 INTRODUCTION

Figure 1–1: FUNCTIONAL BLOCK DIAGRAM

1-2 MM3 Motor Manager 3 GE Power Management

Page 13

1 INTRODUCTION 1.1 OVERVIEW

1.1.3 ORDER CODES

This instruction manual describes the features of a MM3 with all options included.

NOTE

Table 1–2: SELECTION GUIDE

MM3

Base Unit MM3 Options

Display N | No Display (Chassis Unit)

Power 120 120 V AC Control Voltage

MM3

g g g g

|||| Product Family 1 | | | Option 1: Basic Unit 2 | | | Option 2: Full Unit

E | | ESD Relay A | | Aux 2 Relay

W | With Local Display

240 240 V AC Control Voltage

Examples:

• MM3–2–E–N–120: full-featured MM3, ESD relay, Chassis mount unit with 120 V AC control power

• MM3–1–A–W–240: basic MM3 with Aux. 2 relay, Local Display and 240 V AC control power

1.1.4 ACCESSORIES

MM3PC Software:

•

RS-232/485:

•

5A Phase CT:

•

50:0.025 Ground CT:

•

Control key cover:

•

Software package to aid in setting up MM3 operating parameters (free)

RS232 to RS485 converter box designed for harsh industrial environments

300, 350, 400, 500, 600, 750, 1000

For sensitive ground detection on high resistance grounded systems

Covers the auto/manual LEDs, keys and keypad start buttons

GE Power Management MM3 Motor Manager 3 1-3

Page 14

1.2 TECHNICAL SPECIFICATIONS 1 INTRODUCTION

1.2 TECHNICAL SPECIFICATIONS 1.2.1 MM3 SPECIFICATIONS

PHASE CURRENT INPUTS

CONVERSION: true RMS, sample time 1.67 ms RANGE: 0.1 to 8 × Phase CT Primary Amps

setpoint when external CTs used

0.2 to 250 A; FLC < 32 A 1 to 2000 A; FLC ≥ 32 A

ACCURACY: ± (2% +1)

GROUND FAULT CURRENT INPUT

CONVERSION: true RMS, sample time 1.67 ms RANGE: 0.1 to 1.0 × FLC Amps setpoint

0.5 to 15.0 A (50:0.025 CT)

FULL SCALE: 1.5 × FLC Amps setpoint

15 A (50:0.025 CT)

ACCURACY: ± (2%+2), FLC < 32 A

± (2%+6), FLC ≥ 32 A ± 0.3 A (50:0.025 CT)

† Accuracy given as: ± ([% of reading] + [number of least

significant digits])

VOLTAGE INPUT / POWER READING

CONVERSION: true RMS, sample time 1.67 ms VOL TAGE FULL SCALE: 1.5 × VT Primary VOL TAGE ACCURACY: ± 2% of VT Primary or 2% of read-

ing, whichever is greater

POWER ACCURACY:± 5% of nominal or ± 5% of re ad ing ,

whichever is greater

INPUT VOLTAGE: Nominal: 120 VAC or 240 VAC

Max: 250 VAC

VT BURDEN: 0.01 VA

OVERLOAD CURVES

TRIP TIME ACCURACY: ± 200 ms up to 10 seconds

± 2% of trip time over 10 seconds

DETECTION LEVEL: ± 1% of primary CT Amps

GROUND FAULT TRIP TIME

ACCURACY: –0 ms/+50 ms

0.0 = less than 50 ms

ACCELERATION TIME

RANGE: 0.5 to 125 seconds or OFF ACCURACY: ± 0.5 sec.

†

(Residual Connection)

THERMAL COOLING TIMES

RANGE: 5 to 1080 min. when motor stopped

50% of motor stopped value when motor running.

ACCURACY: ± 1 minute

SINGLE PHASE

RANGE: greater than 30% U/B ACCURACY: ± 2 percentage points TRIP DELAY: 5 sec., ±1 sec. CALCULATION METHOD:

IMI

–

IAVI

≥

FLC

IAVI

FLC

† †

†

where:

= average phase current

= current in a phase with maximum deviation from

= motor full load current setting

FLC

-------------------

IMI

–

-------------------

FLC

100

UNDERCURRENT

RANGE: 10 to 100% × motor FLC or OFF DELAY RANGE: 1 to 60 seconds ACCURACY: ±1 sec.

STALLED ROTOR

RANGE: 1.15 to 4.50× FLC or OFF DELAY RANGE: 0.5 to 5 seconds ACCURACY: ± 0.5 sec.

THERMISTOR INPUTS

SENSOR TYPES: positive temperature coefficient

PTC

= 100 to 30000 Ω

HOT

negative temperature coefficient

NTC

= 100 to 30000 Ω

HOT

DELAY: 1 second ACCURACY: ± 5% or 100 Ω

(whichever is greater)

ANALOG INPUT

RANGE: 4 to 20mA ACCURACY: ± 1% of full scale ALARM: programmable 4 to 20 mA TRIP: programmable 4 to 20 mA ACCURACY: ±2% of full scale reading ISOLATION: 15 V isolated, active source

ANALOG OUTPUTS

OUTPUT: 4 to 20 mA MAX LOAD: 600 Ω MAX OUTPUT: 21 mA ACCURACY: ±2% of full scale reading ISOLATION: 36 V isolated, active source

1-4 MM3 Motor Manager 3 GE Power Management

Page 15

1 INTRODUCTION 1.2 TECHNICAL SPECIFICATIONS

RELAY CONTACTS

MM3 CONTACTOR A & B OUTPUT RELAYS:

VOLTAGE

30 VDC 8 A 8 A

RESISTIVE

INDUCTIVE

(PF=0.4)

CONFIGURATION

CONTACT MATERIAL SILVER ALLOY (A

MAX OPERATING

MIN PERMISSIBLE

250 VAC 8 A 8 A

30 VDC 3.5 A 8 A

250 VAC 3.5 A 8 A

VOLTAGE

LOAD

MAKE/CARRY CONTINUOUS

SPST-NO ---CONTACTOR A & B

MAXIMUM

OPERATING

CURRENT

— FORM A

380 VAC, 125 VDC

5 VDC, 10 mA

MAXIMUM

SWITCHING

CAPACITY

2500 VA

300 W

2500 VA

300 W

1250 VA

220 W

1250 VA

220 W

CdO)

MM3 CONTACTOR AUX1 & AUX2 OUTPUT RELAYS:

VOLTAGE

30 VDC 8 A 8 A

RESISTIVE

INDUCTIVE

(PF=0.4)

CONFIGURATION

CONTACT MATERIAL SILVER ALLOY (A

MAX OPERATING

MIN PERMISSIBLE

250 VAC 8 A 8 A

30 VDC 3.5 A 8 A

250 VAC 3.5 A 8 A

VOLTAGE

LOAD

MAKE/

CARRY

CONTINUOUS

SPST-NO + SPST-NC --- AUX 1 & 2

Maximum Operating

Current

— FORM C

CdO)

380 VAC, 125 VDC

5 VDC, 10 mA

Maximum Switching

Capacity

2000 VA

240 W

2000 VA

240 W

875 VA

170W

875 VA

170 W

UNDERVOLTAGE - SUPPLY VOLTAGE

UNDERVOLTAGE: 65% of nominal (120 or 240 V AC)

immediate restart for maximum dip time of 0.1 to 0.5 seconds or OFF

delayed restart for maximum dip time of 0.1 or 10.0 seconds or

UNLIMITED time DELAY RESTART RANGE: 0.2 to 300 seconds DELAY RESTART ACCURACY: ±0.2 seconds

SUPPLY VOLTAGE

AC NOMINAL: 115 VAC, range 80 to 135 V AC

230 VAC, range 150 to 250 V AC FREQUENCY: 50/60 Hz POWER: 25 VA (maximum), 7 VA (nominal)

COMMUNICATIONS

TYPE: RS485 2-wire, half duplex BAUD RATE: 1200 to 57K baud PROTOCOL: Modbus RTU FUNCTIONS: Read/write setpoints

Read coil stat us

Read actual values

Read device status

Execute commands

Loopback Test

TYPE TESTS

TRANSIENTS: ANSI/IEEE C37.90.1 Oscillatory/

Fast Risetime T r ans ie nts

IEC 801-4 Electrical Fast Transient/

Burst Requirements IMPULSE: IEC 255-5 5kV Impulse Voltage Test RFI: 150 MHz, 450 MHz 5W Handheld

Transmitter @ 25cm STATIC: IEC 801-2 Electrostatic Discharge HIPOT: 1500V, 1 Minute All input > 30 Volts

ENVIRONMENT / GENERAL INFORMATION

POLLUTION DEGREE: 2 OVERVOLTAGE CATEGORY: 2 INSULATION VOLTAGE: 300 V OPERATING TEMPERATURE RANGE: 0°C to 60°C IP CLASS: IEC 529 - IpX0

WEIGHT

MAX WEIGHT: 6 lbs. 12 oz. (3.1 kg) SHIPPING BOX SIZE:12" × 9" × 7.5"

350 mm × 229 mm × 190 mm

FUSE TYPE / RATING

0.5 A, 250V Fast Blow, High breaking capacity

INSTALLATION

WARNING!: HAZARD may result if the product is not used for its intended purpose

VENILA T ION REQUIREMENTS: None CLEANING REQUIREMENTS: None

CERTIFICATION / COMPLIANCE

CE: IEC 947-1, IEC 1010-1 Registered to CSA CAN3.Z299.3-1985 & ISO 9001-1994

Design and specifications subject to change without notice.

It is recommended that all MM3 relays are powered up at least once per year to avoid deterioration of

electrolytic capacitors in the power supply.

GE Power Management MM3 Motor Manager 3 1-5

Page 16

1.2 TECHNICAL SPECIFICATIONS 1 INTRODUCTION

1-6 MM3 Motor Manager 3 GE Power Management

Page 17

2 INSTALLATION 2.1 MOUNTING

2 INSTALLATION 2.1 MOUNTING 2.1.1 DESCRIPTION

Cut the panel as shown below to mount the MM3. Us e eit her the #8 -32 or #6 x 1/2” mou nti ng scr ews prov ide d to mount the MM3 to the panel.

Figure 2–1: MM3 DIMENSIONS

GE Power Management MM3 Motor Manager 3 2-1

Page 18

STATUS INDICATORS:

RUNNING: Contactor is energized

and motor is running. STOPPED: Contactor is not energized and motor is not running. TRIPPED: Contactor is not energized. Motor is not running. The MM3 has tripped the motor due to a fault. Normally a cause of trip message will be displayed. ALARM: One or more alarm conditions are present. Normally a cause of alarm message will be displayed.

GROUND CT INPUT

50:0.025 ground fault input.

Rear View

Front View

DISPLAY:

2 line, 40 character illuminated display communicates all messages in simple English for easy interpretation by users unfamiliar with unit.

SUPPLY VOLTAGE

required to power the MM3

VOLTAGE INPUT

Phase A voltage input for voltage and power monitoring.

SWITCH INPUTS

Opto-isolated 120/240 VAC live inputs for various interlock functions. The interlock inputs are fully programmable and can be assigned to such functions as setpoint access, plant interlock, test, and various others.

COMMUNICATIONS

RS485 2 wire serial communication port operates at 1200 - 57,600 bps for remote commands, monitoring and setpoint store. ModBus

RTU protocol.

Ground safety and surge

THERMISTOR

NTC or PTC thermistor input for hot winding detection.

ANALOG INPUT/OUTPUT

4 - 20mA input for process control monitoring / alarming / tripping.

4 RELAYS

■Contactor A: direct on

line / forward / wye

■Contactor B: reverse / delta

■User programmable relay

(AUX 1)

■User programmable relay

(AUX 2)

PROGRAM KEYS:

ACTUAL VALUES: Press to enter

actual values mode to display actual motor values such as current, ground leakage, thermal capacity. SETPOINTS: Press to enter setpoint mode to alter or examine setpoints. STORE: Save a newly entered setpoint.

RESET: Reset the MM3 after a trip. MESSAGE: Move to the desired

setpoint or actual value message. VALUE: Increment or decrement currently displayed setpoint value.

CONTROL KEYS:

AUTO: Selects

operation of start via communication port. MANUAL: Selects manual operation of motor using start key.

START A: Energize contactor A. START B: Energize contactor B. STOP: De-energize contactors.

RELAY INDICATORS:

RELAY A: Contactor A energized. RELAY B: Contactor B energized. AUX 1: User programmable relay 1 energized. AUX 2: User programmable relay 2 energized.

CONTROL POWER

120/240 VAC supply voltage selector switch and fuse access door

Ground safety

RESIDUAL GROUND INPUT PHASE CT INPUTS

3 isolated phase CT inputs

2.1 MOUNTING 2 INSTALLATION

2-2 MM3 Motor Manager 3 GE Power Management

Figure 2–2: FEATURES

Page 19

2 INSTALLATION 2.2 WIRING

2.2 WIRING 2.2.1 TYPICAL WIRING DIAGRAM

∗

GE Power Management

∗

Figure 2–3: TYPICAL WIRING DIAGRAM

GE Power Management MM3 Motor Manager 3 2-3

Page 20

2.3 INPUTS AND OUTPUTS 2 INSTALLATION

2.3 INPUTS AND OUTPUTS 2.3.1 OVERVIEW

a) PHASE CT INPUTS

For motor full-load cur rents up to 250 A, the phase c onductors can be directly co nnected to t he MM3 without phase CTs. If external CTs are required, t he secondary w inding should be lo oped though the MM3 doughnut opening.

Selected CTs should be capable of supplying the required current to the total secondary load which consists of

the connection wiring burden. The CT must not saturate under maximum current conditions which can be up to 8 times motor full load during starting.

b) GROUND FAULT CT INPUT (19/20)

The ground fault detection c onsists of a 50:0.025 input (Termin al 19) and a common input (Terminal 20) , or residual connection of phase CTs ( ground CT is used for 5 A secondary CTs or for residual connection of phase CTs. Residual ground fault protection provides a sensi tivi ty of 10% of motor full load curren t. T he 50: 0.02 5 co re bal ance ( ze ro-s eq uen ce) CT input can be used for improved sensitivity when measuring the ground fault current.

Care must be taken when turning ON the Ground Fault Trip feature. If the interrupting device (contactor or circuit breaker) is not rated to break ground fault current (low resistance or sol-

NOTE

idly grounded systems), the feature should be disabled. The 50:0.025 input is only recommended to be used on resistance grounded systems. Where the system is solidly grounded or high levels of current are to be detected use the 5 A ground input.

only the common input should be externally grounded

). The 5 A input on the

c) SUPPLY VOLTAGE (22/23/24)

A supply voltage o f 1 20/2 40 V AC at 50/60 Hz is requir ed to po wer the MM3. The la bel o n t he bac k o f th e uni t specifies the volt age that has b een internally set. To chang e the voltage setting, ope n the sliding d oor on the back of the MM3 and locate the su pply voltage selector slide switch. The se lector slide switch has a label affixed to show the 120/240 V AC positions. Set the slide switch to the desired voltage.

d) GROUND (21/48) SURGE

This is an additional ground term inal provided for dissip ating transien t signals and surges. Thi s must be connected by a thick wire or braid to the system ground for reliable operation.

e) EXTERNAL CONNECTIONS

Signal wiring is to bo x ter minals that c an ac commoda te wir e as large as 1 2 gaug e. C T conn ection s are mad e using #8 screw ring terminals that can accept wire as large as 8 gauge. Consult Figure 2–3: TYPICAL WIRING DIAGRAM on page 2–3. Other features can be wired as required.

f) THERMISTOR INPUT (17/18)

Either a Positive Temperature Coefficient (PTC) or Negative Temperature Coefficient (NTC) thermistor may be directly connected to the MM3. B y specifying the hot and cold thermistor resistance, the MM3 automatically determines the thermisto r type as NTC or PTC. Use thermistors with hot and cold resis tance values in the range 100 to 30000Ω. If no thermistor is connect ed, the and

S1: CONFIGURATION \ THERMISTOR \ THERMISTOR ALARM

g) ANALOG INPUT (28/29)

S1: CONFIGURATION \ THERMISTOR \ THERMISTOR TRIP

setpoints must be set to

DISABLE

The MM3 accepts an analog input from a standard 4 to 20 mA source. This input can be used for process control monitoring to provide s tatus and/o r alarm and trip ping sign als related to the input sign al level. Th e analog input messages ( names and units.

S3: PROCESS \ ANALOG INPUT

setpoints page) can be programmed to show user-defined

2-4 MM3 Motor Manager 3 GE Power Management

Page 21

2 INSTALLATION 2.3 INPUTS AND OUTPUTS

h) AUX 2 COIL (34/35)

The AUX Relay 2 can be internally ener gi z ed by the MM3 or ex ternal ly ene rg ized by appl yi ng a +2 4 V DC signal to these terminals. Correct polarity is required (Terminal 35 = +24 V DC, Terminal 34 = 0 V DC).

i) OUTPUT RELAYS (36 - 47)

There are up to 4 output relays on the MM3. Contact switching rating for the output relays as well can be found in Section 1.2: TECHNICAL SPECIFICATIONS on page 1–4.

• Contactor A Relay (46/47): non-reversing, forward, low speed, etc.

• Contactor B Relay (44/45): reversing, high speed, etc.

• AUX Relay 1 (40/41/42/43): field programmable

• AUX Relay 2 (36/37/38/39): field programmable or hardwired 24 V DC coil

j) SERIAL COMMUNICATION PORT (25/26/27)

A serial port provi des co mm uni ca tio n c apa bil ities to t he M M3. Multiple MM3 rela ys c an b e c onn ec ted to get her with a 24 AWG stranded, shi eld ed twis ted -pai r with a c ha ract er ist ic i mpe dan ce of 120Ω such as Belden 984 1 or equivalent. The total length of communications wiring should not exceed 4 000 feet. Care should be u sed when routing the communications wiring to avoid power AC lines and other sources of electrical noise.

Correct polarity is ess ential for the com municati ons port to opera te. Terminal 25 ("+") of every MM3 in a serial communication l ink must be c onnected tog ether. Similarly, Terminal 26 ("–") of ever y MM3 must also be c onnected together. The shield wire must be connec ted to Terminal 27 (48 5 SERIAL GROUND) on ever y unit in the link to provide a common ground potenti al for all units. Eac h relay should be "dai sy-chained" to the next one. Avoid star or stub connected configurations if possible to avoid potential communication problems.

A terminating resistor and ca pacitor network is required to pre vent communication err ors. Only the last MM3 and the master comput er driver s hould have the terminati ng network to en sure pr oper matchi ng. Using term inating resistors an d capacitors on all the MM 3s would load down the commun ication network while omittin g them at the ends could cause reflections resulting in communication errors.

Figure 2–4: RS485 TERMINATION

GE Power Management MM3 Motor Manager 3 2-5

Page 22

2.3 INPUTS AND OUTPUTS 2 INSTALLATION

k) SWITCH INPUTS (1 - 16)

All switch inputs are opto-isolated and operate at 120 V AC. The switch reads closed when 120 V AC is applied to the switch terminal. This 120 V AC can be supplied by an external source providing that the source is in phase with the MM3 supply voltage. When the MM3 control voltage switch is set to 240 V AC, the switch circuit also operates at 240 V AC.

l) PROGRAMMABLE SWITCH INPUTS (1 - 10)

These 10 inputs can be programmed to one of a number of different functions. Some of the available functions are: Setpoint Access, Loc kout Rese t, Plant Interlo ck, Auto Star t, Remote Permi ssive, and Test. See setpoints page

S3: PROCESS \ PROGRAMMABLE INPUTS

m) STOP (11)

If this terminal is de- en er gized, both contactor A an d c on tac tor B out put re lay s wi ll ope n c aus i ng t he c on tac tor coils to de-energize. The stop input must be energized before the MM3 will process any start commands.

n) START A (12) AND START B (13)

When the start inpu t terminal s are energi zed, the co rresponding contactor ou tput relay is energize d provide d all other valid start c ondi ti ons are me t. If a n y tri p oc cur s, both con tac tor ou tput s be co me d e- ene rg ized. Start A input is used for all types of contactors, that is: Full Voltage Non-reversing, Reversing, Two-speed (low-speed), Wye Delta Open Transition, Inverter, Slip Ring, Autotransformer, Part Winding, or Wye Delta Closed Transition. Start B input is used for Reversing and Two-speed (high-speed) contactor control. Start inputs are usually momentary unless two-wire control is used. Start A and B commands may also be initiated via the serial link.

for complete list of available functions.

o) LOCAL ISOLATOR N/O (14)

The local isolator NO auxiliary contacts are used to prevent motor starts in the event of the Local Isolator being in the “open” position. T o prevent starts, the MM3 produces a trip when the Local Isolator input is open. A Local Isolator Trip is automatically reset when the Local Isolator is re-closed.

The Local Isolator input can be enabled or disabled as required. The factory default is disabled.

p) CONTACTOR STATUS (A: 15, B: 16)

The MM3 open commands a nd also to displa y the state of th e contactor. There are two c ontactor status inpu ts on the MM3, one for contactor A, the other for contactor B.

Auxiliary contacts mechanically linked to the contactor itself are used to feed back to the contactor status inputs. No status change following a "start" command indicates an open contactor control circuit and no status change following " stop" command indicates a wel ded contactor. Appropriate messages and alar ms are displayed for these conditions and the status can be read via the serial port.

If the motor contactor is externally energized, the MM3 will seal in the output relay and display an “EXTERNAL ST ART” message. If the motor contactor is externally de-energized, the MM3 will drop out the output relay and display an “EXTERNAL STOP” message.

must

know the state of the c ont actor at all times in order to detect di scr epa nci es i n contactor close/

2-6 MM3 Motor Manager 3 GE Power Management

Page 23

2 INSTALLATION 2.3 INPUTS AND OUTPUTS

q) DIELECTRIC STRENGTH TESTING

It may be required to test a complete MCC wit h MM3s installed for dielectr ic strength. This is also known as "flash" or "hipot" te sting. The MM3 is rated for 1800 V AC for 1 minute or 22 00 V AC for 1 second isolation between switch inputs, relay outputs, VT voltage input, supply voltage inputs and Ground Terminals 21 and 48.

When performing diele ctric tests, the connection to the surge ground terminal (22) must be removed. A filter network is used on the AC inpu t to filter out RF and EMI noise . The filter c apacitors and transient absorbe rs could be damaged by the high voltages relative to surge ground on the AC input.

Under no circumstances should any inputs other than switches, relays, supply voltage, VT input, and CT inputs be dielectric tested.

CAUTION

GE Power Management MM3 Motor Manager 3 2-7

Page 24

2.3 INPUTS AND OUTPUTS 2 INSTALLATION

2-8 MM3 Motor Manager 3 GE Power Management

Page 25

3 HARDWARE 3.1 USER INTERFACE

3 HARDWARE 3.1 USER INTERFACE 3.1.1 DESCRIPTION

Once the MM3 has been wir ed and po wered on, it i s ready to be prog ramm ed for a spec ific app lica tion. Loc al programming is done u sing the front panel key pad and the 40-characte r alphanumeric display. Remote programming via the serial port is also possible using the MM3PC software.

3.1.2 MESSAGE DISPLAY

A 40 character displa y commun icates sy stem informa tion to the u ser. Trip and alarm messages automatic ally override the currently -displ ayed m essage. If no key is pres sed fo r 2 minute s, a user -selec ted defa ult mes saging sequence will be di splay ed. If the mo tor is current ly stopped , the Motor Status messa ge will be the de fault message. Once the motor is started, the first user-selected message appears.

RUNNINGRUNNING

STOPPEDOPPED

TRIPPED

ALARM

STOP

ACTUAL

SETPOINT

RELAY ARELAY A

RELAY BRELAY B

AUX RELAY 1AUX RELAY 1

AUX RELAY 2AUX RELAY 2

AUTO

STARTASTART

Figure 3–1: FRONT PANEL

STORE

RESET

MESSAGE

VALUE

MANUAL

STARTBSTART

809773A1.CDR

GE Power Management MM3 Motor Manager 3 3-1

Page 26

STARTB

3.1 USER INTERFACE 3 HARDWARE

3.1.3 INDICATOR LEDS

RUNNING

• the correct state, the RUNNING indicator will be on. Current flow does not affect the indicator, only contactor status.

STOPPED

•

TRIPPED

• long as this indicator is on, the motor cannot be started. It is cleared using the reset key, lockout reset facility or serial port reset, dependent on the type of trip.

ALARM

• rent alarm status.

FAULT

• must be replaced or repaired.

CONTACTOR A

•

CONTACTOR B

•

AUX 1

•

AUX 2

•

AUTO

• mode the Start A / Start B s witch inputs and / keys a re non-ope rational but serial po rt start commands are operationa l. In the Hardwired A uto Mode, the Auto Start A and Auto Start B switch inputs are functional in c onj uncti on with the A uto Permissive sw itch inp ut. Ser ial, faceplate and rem ote sta r ts ar e disabled. STOP commands from any location are always operational.

: Whenever contactor A and/or B relays are closed and the contactor status inputs acknowledge

: If both contactors A and B are in the OFF state, the STOPPED indicator will be on.

: If a trip condition causes the A or B contactor relays to de-energize, this indicator will be on. As

: If an alarm condition is present this indicator will be on. Use

: If an internal fault withi n the MM3 is det ected by s elf-checki ng, this in dicator wil l be on. Th e MM3

: If the Contactor A Relay is energized, this indicator will be on.

: If the Contactor B Relay is energized, this indicator will be on. : If Auxiliary Relay # 1 is on, this indicator will be on. : If Auxiliary Relay # 2 is on, this indicator will be on.

: If the MM3 is in Auto control mode or the Hard-Wi red Auto mode, thi s indicator will be on. In Auto

STARTA

A2: STATUS \ ALARM DATA

to view cur-

MANUAL

• Start B switch inputs, AUTO START A / AUTO START B switch inputs and / keys are operational but serial port start commands are ignored. All stop commands are operational.

: If the MM3 is in Manual c ontrol mode, this indicat or will be on. In Manual mode the Start A /

STARTA START B

3-2 MM3 Motor Manager 3 GE Power Management

Page 27

3 HARDWARE 3.2 KEYPAD

MESSAGE

ACTUAL

MESSAGE

3.2 KEYPAD 3.2.1 SETPOINTS KEY

FUNCTION

SETPOINT

: The key allows the us er to examine and alter tr i p, a larm , an d o ther M M3 se tpoi nts . Th er e

are seven setpoints pages:

• Page 1: Configuration

• Page 2: Protection

• Page 3: Process

• Page 4: Control

• Page 5: Monitoring

• Page 6: Factory Data

• Page 7: Testing

EFFECT

on the display before pressing the key, setpoints page S1 will be shown:

: Pressing this key displays the beginning of the next page of setpoints data. If actual values data was

SETPOINT

]] SETPOINTS ]] S1: CONFIGURATION

USE

: This key can be pressed at any time to view the setpoints. To scroll through the setpoint pages, press the

SETPOINT

key. To go from section to section within a page, press the and keys. To go from

line to line within a section, press the and keys. To alter a setpoin t, the and keys can be used. All setpoi nts can be increm ented or decre-

VALUE

MESSAGE

VALUE

mented to pre-determined limits. When the desired value is reached, the key must be used to save the

MESSAGE

STORE

new setpoint. If an altered setpoint is not stored, the previous value will still be in

MESSAGE

effect. All control and protec-

tion features continue to operate while setpoints data is displayed.

3.2.2 ACTUAL VALUES KEY

FUNCTION

ACTUAL

: The key allows the user to examine all of the actual motor operating par ameters. There

are four pages of actual values data:

• Page 1: Data

• Page 2: Status

• Page 3: Inputs

• Page 4: Statistics

EFFECT

: Pressing this key will cause the display to show the beginning of the next page of actual values data.

If setpoints data was on the display before pressing the key, actual values page A1 will be shown:

]] ACTUAL VALUES ]] A1: DATA

USE

: This key can be presse d at any time to view actual v alues. To scroll through th e actual values pages,

MESSAGE

VALUE

ACTUAL

MESSAGE

VALUE

press the key. To go from section to section within a page, pre ss the and keys. To go from line to line within a section, press the and keys.

The and keys have no effect when actual values data is displayed.

MESSAGE

GE Power Management MM3 Motor Manager 3 3-3

Page 28

3.2 KEYPAD 3 HARDWARE

3.2.3 STORE KEY

FUNCTION EFFECT

: When this key is pr essed the cur rently displa yed setpoint will be stored in non-volati le memory and

STORE

: The key allows the user to store new setpoints into internal memory.

will immediately come into effect. When a setpoint is stored, the following flash message will appear on the display:

NEW SETPOINT

STORED

USE:

STORE

The key can be us ed on ly i n SE TPOINTS mode to store new s etpoin ts, o r in ACT UAL VALUES

mode to select a new default message.

3.2.4 STOP KEY

FUNCTION EFFECT

: The key allows the user to stop the motor directly from the MM3 faceplate interface.

: Pressing this key causes the Cont actor A and Contactor B output relays to de-energize, therefore

dropping out the motor contactor.

USE

: The key is used to stop the motor.

FUNCTION EFFECT

STOP

: The key allows the user to reset MM3 trips.

: Pressing this ke y wi ll reset a tripped state on the MM3. A message indic at ing that a res et is n ot po s-

sible will be displayed if the condition causing the trip is still present.

STOP

3.2.5 RESET KEY

RESET

USE

RESET

: The key can be used to reset all trip conditions from the faceplate. A Ground Fault, Stalled Rotor and Overload Trip can be assigne d to the LOCKOUT RESET feature on one of the programmable switch inputs for added safety. The factory default allows the resetting of all trips using the front panel reset key.

3.2.6 START A KEY

FUNCTION EFFECT USE

: Pressing this key will cause the programmed start sequence to begin.

: The key is used to st art the motor from the f aceplate of the MM 3. Start A can also be in itiated

STARTA

: The key can be used to start the motor.

STARTA

from the start switch inputs at the back of the MM3 or from the serial port.

3.2.7 START B KEY

FUNCTION EFFECT USE

: Pressing this key will cause the programmed start sequence to begin.

: This key is u sed to start a reversin g or t wo speed motor from th e faceplate of the MM3. Sta rt B

STARTB

: The key can be used to start the motor.

STARTB

can also be initiated from the start switch input at the back of the MM3 or from the serial port.

3-4 MM3 Motor Manager 3 GE Power Management

Page 29

3 HARDWARE 3.2 KEYPAD

3.2.8 MESSAGE UP/DOWN KEYS

FUNCTION

MESSAGE

: The and keys allow the user to move to the next or previous section of the

MESSAGE

currently selected page.

EFFECT

: Pressing the key displays the next sect ion of the current page. Pr essing the

MESSAGE

key displays th e previous sec tion of the cur rent page. Note: If either key i s held for mor e than 1 second , the next or previous sections will be selected at a fast rate. When the cu rrent display is at a page heading, th e

MESSAGE

key has no effect. W hen the curr ent displa y is at the end of the page, the key has n o

MESSAGE

effect.

USE

: These keys can be used at any time to move through the sections of the currently selected page

3.2.9 MESSAGE LEFT/RIGHT KEYS

FUNCTION

MESSAGE MESSAGE

: The and keys allo w the user to scan the ne xt or previous line of th e cur-

rently selected section.

EFFECT

: Pressing the key displays the n ext line of the curre nt section. Pressing t he

MESSAGE MESSAGE

key displays the pre vi ous li ne o f the cur r ent sec tio n. If ei the r k ey is held for mor e th an on e se co nd, th e nex t or previous line will be selected at a fast rate. If the display shows a section heading, the key will have no effect. If the key has no effect, the display is showing the last line of a section.

USE

: These keys can be used at any time to move through the lines of the currently selected section.

MESSAGE

3.2.10 VALUE UP/DOWN KEYS

FUNCTION

STORE

key.

VALUE

: The and keys allow th e user to change setpoint values prior to pressing th e

VALUE

EFFECT

VALUE

: Pressing the key will increment the currently displayed setpoint value. Pressing the key will decrem ent the curr ently disp layed se tpoint value. If t he displ ay shows an actual v alue thes e

VALUE

keys will have no effect

USE

: These keys can be used any time to change the value displayed in the setpoint messages.

GE Power Management MM3 Motor Manager 3 3-5

Page 30

3.3 HARDWARE DESCRIPTION 3 HARDWARE

3.3 HARDWARE DESCRIPTION 3.3.1 MM3 DESIGN

A 16 bit 68HC16 microcont roller IC performs program executi on and control log ic for the MM3. It has an 8 or 16 bit bus width which can be selected dynamically with each external memory fetch allowing a mix of 8 and 16 bit devices. Internal c lock rate i s 16 Mhz. Instruc tio ns are s tor ed in a 512 K×8 bit flash memory, data is stored in an 32K×8 RAM while setpoints and accumulated data are stored in a 8K×8 EEPROM.

An intelligent dis play module with its own micropro cessor, memory an d command set is accessed through communications channel on the ma in CPU bo ard. The d isplay, a 4×4 keypad and the front panel LEDs data are exchanged via modbus data packets.

External switch in puts are driven wi th the same vo ltage applie d to the control v oltage 120 or 240 V AC which triggers an optocoupler for isolation. All control logic based on the state of these inputs determines operation of up to 4 output relays which are al so driven from a latch under pro gram control. Lik e the inputs, the rel ay out-

puts are driven from an isolated power supply and optocoupler to prevent switch ing transient energy from affecting the CPU.

A 10 bit successive approximation A/D on the 68HC16 CPU with 8 channels is used to measure all analog signals. Separate AC inpu ts for phase 1, phase 2, phase 3, and ground faul t signals are sample d at a 1.67 ms rate, squared and summed. RMS cur rent i s the n dete rmin ed by deriv i ng the squar e ro ot of the sample d wav eform over several cycles. The sampling time is set to measure an integral number of cycles to reduce the affects of noise and harmonics. Thermistor, analog input, control supply voltage and internal reference voltage are also monitored. A n external precision 5 V DC reference i s used as the input referen ce for the A/D converter.

When power to the unit i s remov ed, a smal l 8-b it process or (68 HC705) wil l cont inue to operate fo r a pe riod of at least 1 hour. This processor is po wered from a large back up c apaci tor. The 68HC705 accur ately meas ures the time that the M M3 has b een wi tho ut control power. When power is re-ap pl ied th e m ain pr o cess or wi ll r ea d the time off from the small p rocessor an d then ver y accurate ly calcul ate the ther mal capacit y value. T his tim e off value is also used for the undervoltage restart feature.

Serial communica tions at up to 576 00 baud is implemented with a UART. All nec essary timing and control is performed inside the ch ip. An extern al transcei ver chip converts th e digital dat a to an RS485 int erface. Dir ection, receive data and transmit data are on the input side with a two wire twisted pair driver on the output.

AC control voltage to pow er the MM3 can be selected as 120 or 240 V AC using a switch and dual woun d primary transformer. A filter is incorporated between the incoming supply and transformer primary to prevent transients from affecting the circuitry.

Separate, isolated sec ondar y suppl ies are us ed for CPU po wer, I/O and communication dr ivers. Optoco uplin g and transformer coupling are used between isolated circuits to prevent transients from upsetting program execution. The 68HC705 is used to provide separate watc hdog timer and pow er fail monitoring co ntrol to ensure that the main CPU starts and oper ates un der any i nput vol tage con ditions. Should nor mal pr ogram exe cution fail, the 68HC705 resets the main CPU.

3-6 MM3 Motor Manager 3 GE Power Management

Page 31

4 SETPOINTS 4.1 OVERVIEW

MESSAGE

VALUE

STORE

4 SETPOINTS 4.1 OVERVIEW 4.1.1 DESCRIPTION

Any of the motor trip/alar m setpoints may be viewe d or altered by pressing the key. Setpoints data is

SETPOINT

divided into six pages. In formatio n about the configu ration o f the m otor as wel l as ot her connec ted devi ces is entered in page one, page two,

S3: PROCESS

S2: PROTECTION

. Information for pro gramming the MM3 contr ol functions is contai ned in page four,

S1: CONFIGURATION

. Information describing the process control functions is described in page three,

Information to aid with plant maintenance is contained in page five, MM3 internal configuration as well as the software version is contained in page six,

Press the key to scroll through the setpoint pa ges. When pr essed for the first time, the fo llowing me s-

SETPOINT

. Information for programming the protection features is located in

S4: CONTROL

S5: MONITORING

. Information about the

S6: FACTORY DATA

sage will appear on the display:

]] SETPOINTS ]] S1: CONFIGURATION

This is the firs t page of se tpo ints. The , , and keys may be used

MESSAGE

to view all the setpoints data. The setpoint values themselves are changed by pressing the or keys until the desired value

VALUE

is reached. When a setpoint is adjusted to its proper value the key must be pressed in order to store the setpoint into the MM3 non-volatile memory. Once the key is pressed the fla sh message shown below will appear on the display and the new Setpoint value will be permanently saved.

NEW SETPOINT STORED

Setpoints may be changed while the motor is running; however it is not recommended to change important protection parameters without first stopping the motor.

WARNING

Setpoints will remain stored indefinitely in the internal non-volatile memory even when control power to the unit is removed. Protecti on parameters are based on th e entered dat a. This data mu st be comple te and accurat e for the given system for reliable protection and operation of the motor.

All setpoint messages shown in the manual contain the factory default settings.

NOTE

4.1.2 SETPOINT MESSAGE ABBREVIATIONS

The following abbreviations are used in the messages in the Setpoints pages.

A, Amps: Amperes GND: Ground AUX: Auxiliary Hz: Hertz CBCT: Core Balance Current Transformer Kohms: kiloOhms COM, Comms: Communication MAX: Maximum CT: Current Transformer MIN: Minimum FLC: Full Load Current SEC, s: Seconds FV: Full Voltage UV: Undervoltage G/F: Ground Fault VT: Voltage Transformer

GE Power Management MM3 Motor Manager 3 4-1

Page 32

4.1 OVERVIEW 4 S ET P OI N TS

4.1.3 SETPOINTS MESSAGE SUMMARY

]] SETPOINTS ]] S1: CONFIGURATION

] COMMUNICATION ]

] MOTOR ] IDENTIFICATION

] STARTER ]

] CT/VT INPUTS ]

] THERMISTOR ]

] FAULT MODE ]

] STATISTICS ]

] PROGRAMMABLE ] MESSAGES

] PREFERENCES ]

]] SETPOINTS ]] S2: PROTECTION

] MOTOR PROTECTION ] THERMAL

] MOTOR PROTECTION ] GROUND FAULT

] MOTOR PROTECTION ] OPTIONS

] LOAD PROTECTION ]

] UNDER/OVERVOLTAGE ] PROTECTION

]] SETPOINTS ]] S3: PROCESS

] PROGRAMMABLE ] INPUTS

] PROCESS INTERLOCK ] NAMES

] STOP CONFIGURATION ]

] ANALOG INPUT ]

] PROCESS OPTIONS ]

]] SETPOINTS ]] S4: CONTROL

] UNDERVOLTAGE ] AUTO RESTART

] AUX RELAY 1 CONFIG ]

] AUX RELAY 2 CONFIG ]

]] SETPOINTS ]] S5: MONITORING

] PLANT CONDITION ]

] PRESET COUNTERS ] AND TIMERS

]] SETPOINTS ]] S6: FACTORY DATA

] PRODUCT FIRMWARE ] IDENTIFICATION

] PRODUCT MODEL ] IDENTIFICATION

] FACTORY SEVICE ] DATA

]] SETPOINTS ]] S7: TESTING

] TEST CONFIGURATION ]

] TEST RELAYS & LEDS ]

] CURRENT SIMULATION ]

] ANALOG OUTPUT ] SIMULATION

] ANALOG INPUT ] SIMULATION

] SWITCH INPUTS ] SIMULATION

] THERMISTOR ] SIMULATION

Figure 4–1: SETPOINT MESSAGES

4-2 MM3 Motor Manager 3 GE Power Management

Page 33

4 SETPOINTS 4.2 S1 CONFIGURATION

4.2 S1 CONFIGURATION 4.2.1 DESCRIPTION

]] SETPOINTS ]] S1: CONFIGURATION

This page is used to enter all information abo ut the MM3 configuration an d the motor being protected . Setpoints page 1 is divided int o eight sections: COMMUNICATIONS, MOTOR IDENTIFICATION, STARTER, CT /

VT INPUTS, THERMISTOR, FAULT MODE, STATISTICS, PROGRAMMABLE MESSAGES, and PREFER-

ENCES.

]] SETPOINTS ]] S1: CONFIGURATION

MESSAGE

] COMMUNICATIONS ]

] MOTOR ] IDENTIFICATION

] STARTER ]

] CT/VT INPUTS ]

] THERMISTOR ]

] FAULT MODE ]

] STATISTICS ]

] PROGRAMMABLE ] MESSAGES

] PREFERENCES ]

4.2.2 COMMUNICATIONS

PATH: SETPOINTS t S1: CONFIGURATION t COMMUNICATIONS

Range: 1 to 255 or OFF, Step: 1

Each MM3 on the same serial communication network must have a

MESSAGE

COMMUNICATIONS ADDRESS: OFF

unique address in the range of 1 to 255. Computer software driving th e serial network must be configured to recognize each separate address.

MESSAGE

BAUD RATE: 9600

Range: 1200, 2400, 4800, 9600, 19200, 57600

Selects the data transfer rate for Modbus serial communications.

MESSAGE

PARITY: NONE

Range: NONE, ODD, EVEN

This setpoint determines what type of parity checking is used when communicating to the MM3.

GE Power Management MM3 Motor Manager 3 4-3

Page 34

4.2 S1 CONFIGURATION 4 SETPOINTS

4.2.3 MOTOR IDENTIFICATION

PATH: SETPOINTS t S1 CONFIGURATION tt MOTOR IDENTIFICATION

MOTOR NAME:

MESSAGE

MOTOR

MOTOR RATING

OFF kW

HIGH SPEED MOTOR RATING: OFF kW

SYSTEM SUPPLY:

480 V

PATH: SETPOINTS t S1: CONFIGURATION

STARTER TYPE:

MESSAGE

OFF

Range: 20 ASCII characters

Enter a motor name that will appear in the actual values message

A1: DATA \ MOTOR DATA \ MOTOR STATUS

Range: 0.3 kW to 1100 kW or OFF; Step: 0.1 kW

Enter the motor ratin g (or low s peed motor rating for two speed sta rters) in kWs on this line. This message is for reference only and does not affect operation of the MM3.

Range: 0.3 kW to1100 kW or OFF, Step: 0.1 kW

Enter the high speed motor rating (applicable for Two Speed starters only) in kWs on this line. This message is for reference only and does not affect operation of the MM3.

Range: 110 V to 600 V; Step: 1 V

Enter system supply voltage on th is line. This messa ge is for reference only and does not affect operation of the MM3.

4.2.4 STARTER

STARTER

ttt

Range: OFF, FV NON-REVERSING, FV REVERSING, WYE DELTA

OPN TRANS, TWO SPEED, INVERTER, SLIP RING, AUTOTRANS OPN TRANS, PART WINDING, WYE DELTA CLS TRANS, AUTOTRANS CLS TRANS, DUTY/STANDBY, SOFT STARTER, WYE DELTA OPN TRANS

Select a type ac cording to the confi guration that the M M3 is controlling . This will determine the control logic used for Contactor A and Contactor B start and stop sequences. See Chapter 9: STARTER TYPES for a detailed description of each starter type.

MESSAGE

CHANGE OVER CURRENT:

1.5 xFLC

Range: 1.0 to 5.0 x FLC or OFF; Step: 0.1 x FLC

Appears only when the

OPN TRNS

WYE DELTA CLS TRANS

STARTER TYPE

. Before the

has been selected as

CHANGE OVER CURRENT

WYE DELTA

comes into effect on a wye delta s tart, a minimu m of 25% of the

OVER TIME

average of the three phase currents has dropped below the

CURRENT

B) will occur. If this setpoint is

must have expir ed. After 25% o f the time h as ex pired and th e

CHANGE OVER

value, the transition from wye (Con tactor A) to del ta (Contac tor

OFF

, 100% of the

CHANGE OVER TIME

CHANGE

must

expire for the wye to delta transition to occur.

MESSAGE

CHANGE OVER TIME:

30 s

RANGE: 1 to 100 seconds; Step: 1 second

Appears only if

CLS TRANS

. See

STARTER TYPE

is set as

CHANGE OVER CURRENT

WYE DELTA OPN TRNS

setpoint above for operation.

WYE DELTA

4-4 MM3 Motor Manager 3 GE Power Management

Page 35

4 SETPOINTS 4.2 S1 CONFIGURATION

MESSAGE

TRANSFER TIME:

10 s

HIGH SPEED START BLOCK: DISABLE

RAMP UP TIME:

5 s

RAMP DOWN TIME:

5 s

STAGE ONE SHORTING TIME: 5 s

Range: 1 to 125 seconds; Step: 1 second

Appears only if

STARTER TYPE

is set as

FV REVERSING

TWO SPEED

. With two-speed starters, this delay is required when the motor is switched from high speed (Contactor B) to low speed (Contactor A). The delay starts when Contactor B drops out. With a reversing starter, this delay occurs when swit ching from for ward (Contact or A) to revers e (Contactor B) and from reverse to forward.

Range: ENABLE, DISABLE

Appears only i f

STARTER TYPE

is selected as

TWO SPEED

. When disabled, the MM3 allows the motor to be started directly to high speed. When enabled, the motor mu st be sta r ted i n low spe ed be for e sw itchi ng to high speed.

Range: 1 to 125 seconds; Step: 1 second

Appears only if

STARTER TYPE

is selected as

INVERTER

. See the des cri pti on

of the Inverter starter type for details on functionality.

Range: 1 to 125 seconds; Step: 1 second

Appears only if

STARTER TYPE

is selected as

INVERTER

. See the des cri pti on

of the Inverter starter type for details on functionality.

Range: 1 to 125 seconds; Step: 1 second

Appears only i f

STARTER TYPE

is selected as

SLIP RING

PART WINDING

or This is the time d elay fr om the clos ure o f Contac tor A un til th e closure o f Contactor B.

MESSAGE

CONTACTOR SEQUENCE:

1S-2S

CHANGE OVER TIME: 5 s

STARTS PER HOUR:

Range: 1S-2S, 2S-1S

Appears only if

1S-2S

value means that the 1S contactor will close ahead of the 2S

STARTER TYPE

is selected as

contactor as per some manufacturer wiring practices. The

AUTOTRANS OPN TRANS

2S-1S

. The

value means that the 2S contactor will close ahead of the 1S contactor, another common wiring practice.

Range: 1 to 125 seconds; Step: 1 second

Appears only if

STARTER TYPE

AUTOTRANS CLS TRANS

is selected as

. This is the time delay from the closure of

AUTOTRANS OPN TRANS

Contactor A until the opening of Contactor A.

Range: 1 to 40 starts/hour or OFF; Step: 1

Limits the number of starts per hour to prevent over heating of windings.

GE Power Management MM3 Motor Manager 3 4-5

Page 36

4.2 S1 CONFIGURATION 4 SETPOINTS

4.2.5 CT/VT INPUTS

PATH: SETPOINTS t S1: CONFIGURATION

PHASE CT PRIMARY

MESSAGE

AMPS: 100

HIGH SPEED PHASE CT PRIMARY AMPS: 100

GROUND FAULT CT INPUTS:50:0.025 CBCT

VT PRIMARY VOLTAGE: OFF V

MESSAGE

VT CONNECTION TYPE: PHASE (A-N)

VT SECONDARY VOLTAGE: 120V

tttt

CT/VT INPUT S

Range: None to 1000 A; Step: 1 A

Enter the phase CT rated pr imary amps. For example , if the phase CTs are rated 500:5, enter 500 . The seco ndary of the C T must be conne cted to the correct input. i.e. 1 A or 5 A.

Range: None to 1000 A; Step: 1 A

Appears only if

STARTER TYPE

is selected as

TWO SPEED

. Enter the high speed CT rated primary Amps. This Setpoint is in effect only when Contactor B is energized.

Range: 50:0.025 CBCT, RESIDUAL

Enter the ground s ensing used, either sen sitive 50:0.025 co re balanced

Range: 110 to 690 V or OFF; Step: 1 V

Enables or dis ables the voltage/power features of th e MM3 as well as setting the VT primary voltage.

Range: PHASE (A-N), LINE (A-B)

Appears only if the

VT PRIMARY VOLTAGE

the type of VT connection:

PHASE A-N

setpoint is not set to

) or

LINE A-B

(Vab).

OFF

. Enter

Range: 110 to 240 V; Step: 10 V

Appears only if the

VT PRIMARY VOLTAGE

setpoint is not set to

OFF

. Enter

the VT secondary voltage.

MESSAGE

NOMINAL FREQUENCY: 60 Hz

Range: 50 Hz, 60 Hz

Enter the nominal system frequency.

4-6 MM3 Motor Manager 3 GE Power Management

Page 37

4 SETPOINTS 4.2 S1 CONFIGURATION

4.2.6 THERM ISTOR

PATH: SETPOINTS t S1: CONFIGURATION

COLD RESISTANCE:

MESSAGE

PATH: SETPOINTS t S1: CONFIGURATION

0.1 kOHMS

HOT RESISTANCE

5.0 kOHMS

THERMISTOR TRIP: DISABLE

THERMISTOR ALARM: DISABLE

INTERNAL FAULT TRIP:

MESSAGE

ENABLE

ttttt

THERMISTOR

Range: 0.1 to 30.0 kOHMS; Step: 0.1

For a PTC thermistor, enter the resista nce that the thermistor m ust drop below before a Thermistor Trip or Alarm can be cleared. For a NTC thermistor, enter the resistance that the thermistor must rise above before a Thermistor Trip or Alarm can be cleared.

Range: 0.1 to 30.0 kOhms, STEP: 0.1

For a PTC thermistor, enter the resistan ce that the thermist or must rise above before a Thermistor Trip or Alarm will occur. For a NTC thermistor, enter the resistance that the thermistor must drop below before a Thermistor Trip or Alarm will occur.

Range: ENABLE, DISABLE

When a thermistor is used, it can be selected for an Alarm or Trip or both. Choose

ENABLE

to allow Thermistor Trips to occur.

Range: ENABLE, DISABLE

When a thermistor is used, it can be selected for an Alarm or Trip or both. Choose

ENABLE

to allow Thermistor Alarms to occur.

4.2.7 FAULT MODE

ttttt t

TRIP MODE

Range: ENABLE, DISABLE

An internal fault during self-checking will cause an alarm. Since operation may be erratic depending on the fault condition, it may be desirable to trip the motor by setting thi s setpoint to the motor with an internal fault present if set to

ENABLE

. The MM3 continues to run

DISABLE

MESSAGE

SERIAL COMMS FAILURE TRIP: OFF s

SERIAL COMMS FAILURE ALARM: OFF

CHANGE COMMAND MODE ON ALARM: DISABLE

Range: 5 to 25 seconds or OFF; Step: 5 seconds

If the serial communications link is used to control a process with several motors working to gether, it m ay be desirable to shut down the motor if communication control is lost. When no activity occurs on the communications port for 5 to 25 seconds, it will trip if this feature is enabled.

Range: 5 to 25 seconds or OFF; Step: 5 seconds

Sets an alarm when the serial communication link is interrupted.

Range: ENABLE, DISABLE

Allows the command mode to automatically switch from AUTO to MANUAL when the

SERIAL COMMS FAILURE ALARM

is active. If the mo tor was running when the alarm occurred it will be sto pped and will restart based on manual start inputs only. When serial communication is restored the MM3 will remain in MANUAL command mode.

GE Power Management MM3 Motor Manager 3 4-7

Page 38

4.2 S1 CONFIGURATION 4 SETPOINTS

STORE

4.2.8 STATISTICS

PATH: SEPOINTS t S1: CONFIGURATION

CLEAR TIMERS:

MESSAGE

DISABLE

CLEAR START/TRIP COUNTERS: DISABLE

CLEAR INTERLOCK COUNTER: DISABLE

CLEAR ENERGY USED: DISABLE

PATH: SETPOINTS t S1: CONFIGURATION

PROGRAMMABLE MESSAGE

MESSAGE

SAMPLE TEXT

ttttttt

STATISTICS

Range: ENABLE, DISABLE

Select

A4: STATISTICS \ TIMERS

ENABLE

and press to clear the timers on page

Range: ENABLE, DISABLE

Select page

ENABLE

and press to clear the star t and trip counters on

A4: STATISTICS \ COUNTERS

STORE

Range: ENABLE, DISABLE

Select

A4: STATISTICS \ COUNTERS

ENABLE

and press to clear the interlock counter on page

Range: ENABLE, DISABLE

Select page

ENABLE

and press to clear the energy used (kWhrs) on

A1: DATA \ MOTOR DATA

STORE

4.2.9 PROGRAMMABLE MESSAGE

ttttt ttt

PROGRAMMABLE MESSAGE

Range: 40 ASCII characters

Enter a 40 character me ssage using the , , and keys. This message is displayed in

VALUE

A1: DATA \ PROGRAMMABLE MESSAGE

VALUE

STORE

PATH: SETPOINTS t S1: CONFIGURATION

DEFAULT MESSAGE

MESSAGE

DELAY: 10 s DEFAULT MESSAGE

BRIGHTNESS: 60%

4.2.10 PREF ERENCES

ttttt tttt

PREFERENCES

Range: 3 to 300 seconds; Step: 1

The default message delay can now be adjusted with this setpoint.

Range: 0 to 100%; Step: 20%

The brightness of the MM3 dis play c an now be adjusted w hen it i s not in use.

4-8 MM3 Motor Manager 3 GE Power Management

Page 39

4 SETPOINTS 4.3 S2 PROTECTION

4.3 S2 PROTECTION 4.3.1 DESCRIPTION

]] SETPOINTS ]] S2: PROTECTION

This page is used to ent er all informa tion about t he protection of t he motor and th e load. Setpoi nts Page 2 is divided into four sections, MOTOR PROTECTION THERMAL, MOTOR PROTECTION GROUND FAULT, MOTOR PROTECTION OPTIONS, LOAD PROTECTION and UNDER/OVERVOLTAGE PROTECTION.

]] SETPOINTS ]] S2: PROTECTION

MESSAGE

] MOTOR PROTECTION ] THERMAL

] MOTOR PROTECTION ] GROUND FAULT

] MOTOR PROTECTION ] OPTIONS

] LOAD PROTECTION ]

] UNDER/OVERVOLTAGE ] PROTECTION

GE Power Management MM3 Motor Manager 3 4-9

Page 40

4.3 S2 PROTECTION 4 SETPOINTS

4.3.2 MOTOR PROTECTION – THERMAL

PATH: SETPOINTS

MESSAGE

S2 PROTECTION t MOTOR PROTECTION TH ERMAL

FULL LOAD CURRENT:

100 A

HIGH SPEED FULL LOAD CURRENT: 100 A

OVERLOAD PICKUP LEVEL: 1.00

OVERLOAD CURVE NUMBER: 4

Range: 0.1 to 1000.0 A or OFF; Step: 0.1 A

Usually the rated cu rrent on the motor nameplate is ente red as the full load current val ue. A lower v alue effectively overpr otects the moto r. It is not advisable to enter a value higher than the motor nameplate rating. When the actual m otor current exceeds this value, the th ermal capacity starts to be used up and the motor will e ventually trip according to the overload cur ve selected.

Range: 0.1 to 1000.0 A or OFF; Step: 0.1 A

This setpoint functions the same way as

FULL LOAD CURRENT

, but refers to the high speed FLC of a two-speed motor, and is only in effect while contactor B is energized.

Range: 1.00 to 1.25; Step: 0.01

This setpoint dictates where the overload curve begins as the motor enters an overlo ad co ndi tio n. Thi s is useful for service fact or m oto rs as i t allows the pickup level to be defined. The cu rve is effectively cut off at current values below this pickup.

Range: 1 to 8, CLASS 10, CLASS 15, CLASS 20, CLASS 30

Select 1 of 12 different

I2t

time-overcurrent overload curves . Consult the

overload curve figur es and tables in this man ual (see pages 4–34 to 4–

37) to match the c urve number to a particular mo tor. If no motor curve data is availabl e, selec t the curve which ha s a 6 tim es overlo ad trip time equal to the moto r nameplate stall tim e. The MM3 also has f our NEMA class curves which can be selected should these curves be suggested by the manufacturer.

MESSAGE

HOT/COLD CURVE RATIO: 75

Range: 20 to 100%; Step: 1%

Defines the ratio of motor "h ot" thermal character istic to th e motor "co ld" characteristic. It is used to thermally model the heating in the motor when running at or below fu ll loa d current. T his is often de termi ned fro m motor thermal damage curves or Locked Rotor Time Hot and Locked Rotor Tim e Co ld dat a.

HOT/COLD CURVE RATIO

determines the therma l capacity used when a motor h as run at its full load current lo ng enough for the motor temperature to reach its steady state value, which is defined as the hot temperature. Note that the thermal capacity used is reduced according to the actual motor current.

For example, given the fo ll owi ng moto r in forma tion: motor FLC = 100 A , ac tu al mo tor cur rent = 80 A, LRT Hot = 7 seconds, an d LRT Cold = 10 seco nds, the thermal cap acity used can be d etermined from th e

CURVE RATIO

Therefore:

as follows:

HOT/COLD CURVE RATIO

Thermal Capacity Used

LRT Hot

------------------------ -

===

LRT Cold

100

actual motor current

----------------------------------------------------- 100%

FULL LOAD CURRENT

80 A

--------------- - 100% 70%

100 A

7 sec.

-------------------

10 sec.

()×

100×70%

–

HOT/COLD CURVE RATIO

24%

()×

HOT/COLD

4-10 MM3 Motor Manager 3 GE Power Management

Page 41

4 SETPOINTS 4.3 S2 PROTECTION

4.3.3 MOTOR PROTECTION – GROUND FAULT

PATH: SETPOINTS tt S2: PROTECTION tt MOTOR PROTECTION GROUND FAULT

NOTE

MESSAGE

Care must be taken when turning ON th e

GROUND FAULT TRIP

feature. If the interrupting device (contactor or circuit breaker) is not rated to break ground fault current (low resistance or solidly grounded systems), the feature should be disabled. Alternately, the feature may be assigned to an auxiliary relay and connected such that it trips an upstream device that is capable of breaking the fault current. Be aware that th e MM3 will energize the auxiliary rela y and de-energize contactor A at the same time when the ground fault trip occurs. Unless a contactor trip delay setting has been chosen (see

GROUND FAULT ALARM LEVEL: OFF %FLC

Range: 10 to 100% FLC or OFF; Step: 1% FLC

This message will appear if the Set the

GROUND FAULT ALARM LEVEL

GROUND FAULT TRIP LEVEL

breakdown. For ma ximum sensitivity, the value selected should be just high enough to prevent nuisance alarms. If the selected, the level is calculated as a percentage of the

setting.

GROUND FAULT ALARM LEVEL

GROUND FAULT ALARM LEVEL: OFF A

GROUND FAULT ALARM DELAY ON RUN: 10 s

CURRENT

Range: 0.1 to 15.0 A or OFF; Step: 0.1 A

This message will appear if the Ground Fault CT Input is set to 50:0.02 5 CBCT. See

Range: 1 to 60 seconds; Step: 1 second

This delay is used when the motor is in a RUNNING condition. If the ground current is eq ual to or above the

AUX RELAY 1 CONFIG

GROUND FAULT CT INPUT

to get an early warning of insulation

for details).

is set to

RESIDUAL

to some arbitrary amoun t below the

RESIDUAL

value is

FULL LOAD

(%FLC) above for details.

GROUND PRIMARY ALARM PICKUP

setpoint value and r emains this way for the time delay progra mmed in this setpoint whi le the motor is runni ng, the alarm rela y will activate an d the GROUND ALARM message will be displayed.

MESSAGE

GROUND FAULT ALARM: DELAY ON START: 10 s

When the phase current increases from 0, the

ALARM DELAY ON START

NOTE

until the MM3 determines whether the motor is RUNNING or STARTING

Refer to the

setpoint described below is used

ACCELERATION TIME

setpoint in Section 4.3.5: LOAD

GROUND

PROTECTION for details on how the MM3 detects a start condition.

Range: 1 to 60 seconds; Step: 1 second

This delay is used when the motor is in a STARTING condition. If the ground current is eq ual to or above the

GROUND PRIMARY ALARM PICKUP

setpoint value and r emains this way for the time delay progra mmed in this setpoint while the motor is starting, the alarm relay will activ ate and the GROUND ALARM message will be displayed.

When the phase current increases from 0, this delay is used until the MM3 determines whether the motor is RUN-

NOTE

NING or STARTING

Refer to the

ACCELERATION TIME

setpoint in Section 4.3.5: LOAD

PROTECTION for details on how the MM3 detects a start condition.

GE Power Management MM3 Motor Manager 3 4-11

Page 42

4.3 S2 PROTECTION 4 SETPOINTS

MESSAGE

GROUND FAULT TRIP LEVEL: OFF %FLC

GROUND FAULT TRIP LEVEL: OFF A

GROUND FAULT TRIP DELAY ON RUN: 1.0 s

Range: 10 to 100% FLC or OFF; Step: 1% FLC

This message will appear if the

GROUND FAULT CT INPUT

is set to

RESIDUAL

Some leakage current will always flow between the 3 phases and ground due to capacitance, insulation, resistance, etc. On resistance limited ground systems, the value selected must be below the maximum resistance limited current that can flow or a trip will never occur. If no optimum value is known, monitor actual leakage current then enter a current somewhat a bove this value. Ground Fault Trips at a later time would indicate a deterioration in the system and insulation integrity should be verified. Persistent, high values of leakage current pose a threat to personnel an d equipment and should not be left unchecked. If

RESIDUAL

the

value is selected, t he lev el is calc ulated as a per cent age of

the Full Load Current setting. Settings below 1 A are not recommended.

Range: 0.1 to 15.0 A or OFF; Step: 0.1 A

This message will appear if the Ground Fault CT Input is set to 50:0.02 5 CBCT. See description for

GROUND FAULT TRIP LEVEL

(%FLC) for details.

Range: 0.0 to 5.0 seconds; Step: 0.1 second

This delay is used when the motor is in a RUNNING condition. If the ground current is equal to or above the

GROUND PRIMARY TRIP PICKUP

setpoint value and r emains this way for the time delay progra mmed in this setpoint while the motor is running, the assigned relay(s) will activate and the

CAUSE OF TRIP: GROUND FAULT

When the phase current increases from 0 A, the

TRIP DELAY ON START

NOTE

the MM3 determines whether the motor is RUNNING or STARTING

message will be displayed.

GROUND

setpoint described below is used until

MESSAGE

GROUND FAULT TRIP DELAY ON START: 1.0s

Refer to the

ACCELERATION TIME

setpoint in Section 4.3.5: LOAD

PROTECTION for details on how the MM3 detects a start condition.

Range: 0.0 to 10.0 seconds; Step: 0.1 second

This delay is used when the motor is in a STARTING condition. If the ground current is equal to or above the

GROUND PRIMARY TRIP PICKUP

setpoint value and r emains this way for the time delay progra mmed in this setpoint while the motor is starting, the assigned relay(s) will activate and the

CAUSE OF TRIP: GROUND FAULT

message will be displayed.

When the phase current increases from 0, this delay is used until the MM3 determines whether the motor is RUN-

NOTE

NING or STARTING

Refer to the

ACCELERATION TIME

setpoint in Section 4.3.5: LOAD

PROTECTION for details on how the MM3 detects a start condition.

4-12 MM3 Motor Manager 3 GE Power Management

Page 43

4 SETPOINTS 4.3 S2 PROTECTION

4.3.4 MOTOR PROTECTION – OPTIONS

PATH: SETPOINTS tt S2: PROTECTION

MINIMIZE RESET TIME:

MESSAGE

ENABLE

STOPPED MOTOR COOL TIME: 30 MINUTES

MOTOR PROTECTION OPTIONS

ttt

Range: ENABLE, DISABLE

The MM3 measures th e motor ther mal capac ity used dur ing a star t. Th is data can be used to minimize the lockout time following an Overload Trip. This allows the mo tor to be res tar ted af ter it ha s co ol ed to a safe starting temperature. When set to

DISABLE

, the lockout time after an Overload Trip

will be the time required for the thermal memory to reduce to 15%. For example, if the thermal capacity used during the previous start is

40%, then after an occurrence of an Overload Trip, a RESET can be accomplished when the thermal capacity decreases to 58% as shown below:

100% – TC used during start – 2% Safety Margin = 100% – 40% – 2% = 58%

Range: 5 to 1080 minutes; Step: 1 minute

The

STOPPED MOTOR COOLING TIME

determines how long it takes for a stopped motor to reach steady state ambient temperature from its maximum allowable te mperature. The maximum allowable temperatur e occurs when the thermal capacity used reaches 100% (e.g. at the occurrence of an Overload Trip). The Thermal Capacity value will decrease exponen tially to model the coolin g characteristic of the m otor. The

STOPPED MOTOR COOLING TIME

setpoint thus represents the time for the thermal capacity v alue to decay through 5 time const ants. Note that an Overload Trip can norma lly be r eset whe n the ther mal capaci ty valu e decreases to 15%.

MESSAGE

OVERLOAD TRIP RESET: MANUAL

For example, given: Maximum Thermal Capacity = 100% (Overload Trip)

STOPPED MOTOR COOLING TIME

= 30 minutes

The time to reach 15% Thermal Capacity Used can be calculated by:

⁄–

Thermal Capacity 100

Therefore, the time tha t must pas s until the Thermal Capacity reaches 15% can be calculated as shown:

⁄–

⇒

–

0.15

---

⇒

()

–== =

0.15ln

⁄–

⇒

0.15

Thermal Capacity 100

15 100

⇒

11.4 minutes

Range: MANUAL, AUTO

If this Setpoint is set to

AUTO

, an automatic reset of Ove rload Trips will occur after the motor h as coole d to a ther mal c apacity value below 15 %. When set to

MANUAL

, the keypad key must be pressed to r eset

RESET

the trip after the motor has cooled to a thermal capacity value below 15%.

GE Power Management MM3 Motor Manager 3 4-13

Page 44

4.3 S2 PROTECTION 4 SETPOINTS

MESSAGE

RESET LOCKOUT USING RESET KEY: ENABLE

PHASE UNBALANCE ALARM: ENABLE

THERMAL CAPACITY ALARM: OFF %

OPEN CONTROL CIRCUIT TRIP: ENABLE

Range: ENABLE, DISABLE

If this setpoint is set to

ENABLE

RESET

, the key on the faceplate of the MM3 will reset al l trips p rovi di ng tha t th e t rip condition is not st ill pres en t. When set to

DISABLE

RESET

, the key on the faceplate will not reset the three lockout trips (Over load, Ground Fault, and Locked Rotor); one of the interlock inpu ts will have to be used to res et these three tr ips. Note: when the “Lockout Rese t” function is configured , the key will no

RESET

longer be able to reset the three lockout trips.

Range: ENABLE, DISABLE

When an unbalance in phase currents exceeds the internally set threshold, an alarm condition will be generated if this value is set to

ENABLE

. The internal threshold i s 15% an d the unb alanc e must b e above

this threshold for at least 5 seconds for the alarm to occur.

Range: 1 to 100% or OFF; Step: 1

When the thermal capa city used exceeds the level set, an alarm will b e generated. This alarm can be assigned to a dedicated AUX Relay if desired.

Range: ENABLE, DISABLE

In two-wire co ntrol ap pl ic ations wh er e a c onsta nt s ta rt s ign al is p ro vi ded , the MM3 should be configured to trip on an open control circuit. An Open Control Circuit occur s when feedback on Con tactor Status (termin al 55) stays open when a s tart oper ation is exec uted. Thi s condit ion ma y o ccur if a control wiring problem develops or because of an AUX contact failure. The

OPEN CONTROL CIRCUIT TRIP

with the

RESET ALARMS USING RESET KEY

feature should be used in conjunction

function.

MESSAGE

RESET ALARMS USING RESET KEY: ENABLE

Range: ENABLE, DISABLE

The MM3 will now allow the Acceleration Alarm, Open Control Circuit Alarm, Motor Greasing, Contactor In spection and Motor Stopped Time Alarms to be reset using th e Faceplate Reset Key. All other alarms will reset when the Alarm condition clears.

4-14 MM3 Motor Manager 3 GE Power Management

Page 45

4 SETPOINTS 4.3 S2 PROTECTION

4.3.5 LOAD PROTECTION

PATH: SETPOINTS tt S2: PROTECTION

UNDERPOWER ALARM

MESSAGE

LEVEL: OFF kW

UNDERPOWER ALARM DELAY: 10 s

UNDERPOWER TRIP LEVEL: OFF kW

UNDERPOWER TRIP DELAY: 10 s

tttt

LOAD PROTECTION

Range: 0.2 to 1100.0 kW or OFF; Step: 0.1 kW

Appears if

VT PRIMARY VOLTAGE

is not set to

OFF

. This feature functions the same as the Underp ower Trip feature but produces an alar m indication instead of a trip.

Range: 1 to 60 seconds; Step: 1 second

Appears if

OFF

set to

. Enter a delay for activation of the Underpower Alarm.

VT PRIMARY VOLTAGE

and

UNDERPOWER ALARM LEVEL

are not

Range: 0.2 to 1100.0 kW or OFF; Step: 0.1 kW

Appears if

VT PRIMARY VOLTAGE

is not set to OFF . For applications such as pumps, the Underpower Trip feature or the Undercurrent Trip feature can be selected to detect loss of load. The advantage of the Underpower Trip feature is that it allows for more accurate sensing if the loss of load results in only a small change in c urrent and a power factor shift. If the power remains be low this value while the motor is running for the time specified in

OFF

if no Underpower Trip is required.

UNDERPOWER TRIP DELAY

, the MM3 will trip. Set t his value to

Range: 1 to 60 seconds; Step: 1 second

Appears if

OFF

. Set the

VT PRIMARY VOLTAGE

UNDERPOWER TRIP DELAY

and

UNDERPOWER TRIP LEVEL

long enough to prev ent nui sa nc e

are not set

trips from momentary power dips.

MESSAGE

ACCELERATION TIME ALARM: OFF s

ACCELERATION TIME TRIP: OFF s

LOAD INCREASE ALARM:

OFF %FLC

UNDERCURRENT ALARM LEVEL: OFF %FLC

UNDERCURRENT ALARM DELAY: 10 s

UNDERCURRENT TRIP: LEVEL: OFF %FLC

Range: 0.5 to 125.0 seconds or OFF; Step: 0.5 second

Enter a time longer than the ac tua l acc ele ra tio n tim e of the motor. This is defined as the length of time requ ired for the average motor current to drop below Full Load Current after a start command.

Range: 0.5 to 125.0 seconds or OFF; Step: 0.5 second

Enter the maximum allowable acceleration time of the motor. This is defined as the length of time requ ired for the average motor current to drop below Full Load Current after a start command.

Range: 10 to 130% FLC or OFF; Step: 1% FLC

Set to a suitable level if a warning is required when motor current is approaching, or in, an overload condition. When current exceeds this value, a Load Increase Alarm will occur. Set to

OFF

if not required.

Range: 10 to 100% FLC or OFF; Step: 1% FLC

This feature functions the same as the Undercurrent Trip feature but produces an alarm indication instead of a trip.

Range: 1 to 60 seconds; Step: 1 second

Enter the delay for activation of the Undercurrent Alarm.

Range: 10 to 100% FLC or OFF; Step: 1% FLC

For applicatio ns su ch as pumps an Un dercur rent Trip can be sele cted . If the current remains below this value while the motor is runn ing for the time specified in the value to

OFF

if no Undercurrent Trip is required.

UNDERCURRENT TRIP DELAY

, the MM3 will trip. Set this

GE Power Management MM3 Motor Manager 3 4-15

Page 46

4.3 S2 PROTECTION 4 SETPOINTS

MESSAGE

UNDERCURRENT TRIP DELAY: 10 s

STALLED ROTOR TRIP LEVEL: 4.50 xFLC

STALLED ROTOR TRIP DELAY: 3.0 s

Range: 1 to 60 seconds; Step: 1 second

Set the

UNDERCURRENT TRIP DELAY

long enough to preven t nuisance trips

from momentary current dips when the Undercurrent Trip feature is used.

Range: 1.15 to 4.50 x FLC or OFF; Step: 0.05 x FLC

Mechanical equipment such as pumps or fans can be quickly damaged if it jams, resulting in a lo cked rotor stall. Even though the motor may be able to withstand the locked rotor for a longer time, it may be desirable to trip the motor quickly as so on as the stall condition oc curs. T he MM3 will trip when the running current ex ceeds this value after the Stalled Rotor Time. Set this value to OFF if stall protection of d riven equip ment is not required since the thermal overload protection will protect the motor. This feature is defeated during the inrush of motor starting.

Range: 0.5 to 5.0 seconds; Step: 0.5 seconds

If the

STALLED ROTOR TRIP LEVEL

is set to a value other than

OFF

, the MM3

will trip after the time specified by this setpoint.

4-16 MM3 Motor Manager 3 GE Power Management

Page 47

4 SETPOINTS 4.3 S2 PROTECTION

4.3.6 UNDER/OVERVOLTAGE PROTECTION

PATH: SETPOINTS tt S2: PROTECTION

UNDERVOLTAGE ALARM

MESSAGE

LEVEL: OFF V

UNDERVOLTAGE ALARM DELAY: 10 s

UNDERVOLTAGE TRIP LEVEL: OFF kW

UNDERVOLTAGE TRIP DELAY: 10 s

OVERVOLTAGE ALARM LEVEL: OFF V

ttttt

UNDER/OVERVOLTAGE PROTECTION

Range: 0 to 690 V or OFF; Step: 1 V

Appears if

VT PRIMARY VOLTAGE

is not set to

OFF

. This feature functions the same as the Undervo ltage Trip feature but produ ces an alar m indication instead of a trip.

Range: 1 to 60 seconds; Step: 1 second

Appears if

VT PRIMARY VOLTAGE

is not set to

OFF

. Enter the delay for

activation of the Undervoltage Alarm.

Range: 0 to 600 V or OFF; Step: 1 V

Appears if

VT PRIMARY VOLTAGE

is not set to

OFF

. If the voltage remai ns

below this value while the motor is running for the time specif ied in the

UNDERVOLTAGE TRIP DELAY

, the MM3 will trip. Set this value to

OFF

if no

Undervoltage Trip is required.

Range: 1 to 60 seconds; Step: 1 second

Appears if

TRIP DELAY

VT PRIMARY VOLTAGE

is not set to

long enough to prevent nuisance trips from momentary

OFF

. Set the

UNDERVOLTAGE

voltage dips when the Undervoltage Trip feature is used.

Range: 0 to 600 V or OFF; Step: 1 V

Appears if

VT PRIMARY VOLTAGE

is not set to

OFF

. This feature functions the same as the Overvoltage Trip feature but produces an alarm i ndication instead of a trip.

MESSAGE

OVERVOLTAGE ALARM DELAY: 10 s

OVERVOLTAGE TRIP LEVEL: OFF V

OVERVOLTAGE TRIP DELAY: 10 s

Range: 1 to 60 seconds; Step: 1 second

Appears if

VT PRIMARY VOLTAGE

is not set to

OFF

. Enter the delay for

activation of the Overvoltage Alarm.

Range: 0 to 690 V or OFF; Step: 1 V

Appears if

VT PRIMARY VOLTAGE

is not set to

OFF

. If the voltage remai ns

above this value while the motor is running for the time specified in th e

OVERVOLTAGE TRIP DELAY

, the MM3 will trip. Set this value to

OFF

if no

Overvoltage Trip is required.

Range: 1 to 60 seconds; Step: 1 second

Appears if

TRIP DELAY

VT PRIMARY VOLTAGE

is not set to

long enough to prevent nuisance trips from momentary

OFF

. Set the

OVERVOLTAGE

voltage dips when the Undervoltage Trip feature is used.

GE Power Management MM3 Motor Manager 3 4-17

Page 48

4.4 S3 PROCESS 4 SETPOINTS

4.4 S3 PROCESS 4.4.1 DESCRIPTION

]] SETPOINTS ]] S3: PROCESS

This page is used to enter al l proces s inform ation. S etpoin ts Page 3 is divid ed into fo ur secti ons, PR OGRAMMABLE INPUTS, INTERLOCK NAMES, FIELD STOP and ANALOG INPUT.

]] SETPOINTS ]] S3: PROCESS

MESSAGE

] PROGRAMMABLE ] INPUTS

] INTERLOCK NAMES ]

] STOP CONFIGURATION ]

] ANALOG INPUT ]

] PROCESS OPTIONS ]

4-18 MM3 Motor Manager 3 GE Power Management

Page 49

4 SETPOINTS 4.4 S3 PROCESS

4.4.2 PROGRAMMABLE INPUTS

PATH: SETPOINTS

The first five messages are repeated for all ten interlock outputs.

NOTE

INTERLOCK INPUT 1:

MESSAGE

NOT USED

STARTUP OVERRIDE DELAY: 0 s

RUNNING OVERRIDE DELAY: 0 s

OPERATION: INTERLOCK STOP

INSTANTANEOUS ALARM: DISABLE

IL1 SWITCH TYPE: N.O.

S3: PROCESS t PROGRAMMABLE INPUTS

ttt

Range: NOT USED, PROCESS INTERLOCK A to PROCESS

INTERLOCK J, PLANT INTERLOCK, LOCKOUT RESET, SETPOINT ACCESS, AUTO PERMISSIVE, AUTO START A, AUTO START B, RESET EMERGENCY STOP TRIP, RESET UNDERCURRENT TRIP, TWO WIRE CONTROL, TEST SWITCH, REMOTE PERMISSIVE, COMMUNICATIONS SELECT, INTERLOCK COUNTER, AUX RELAY 1 INHIBIT, WYE-DELTA 1M CONTACT, WYE-DELTA 2S CONTACT, U/V RESTART INHIBIT, AUTOTRANS 2S CONTACT, STOP A, STOP B, REMOTE RESET, MOTOR SELECTOR A/B, DUTY SELECT MANUAL/AUTO, BYPASS CONTACT

Note that interloc k input functio ns are active when the appli cable switch input is closed and en ergized. See th e following page for e xplanation of the range options.

Range: 0 to 3600 seconds or OFF; Step: 1 second

See PROCESS INTERLOCK A.

Range: 0 to 3600 seconds or OFF; Step: 1 second

See PROCESS INTERLOCK A.

Range: INTERLOCK STOP, LATCHED TRIP

See PROCESS INTERLOCK A.

Range: ENABLE, DISABLE

See PROCESS INTERLOCK A.

Range: N.O., N.C.

This setpoint allows the user to configur e the ty pe of s witch u sed for th e programmable switc h inputs as normally open (

N.C.

(

). When set to in the ‘healthy’ position; if the switch is open, it is in the ‘unhealthy’ position. When set to position; if it is closed, it is in the ‘unhealthy’ position.

N.O.

) or normally closed

N.O.

(factory default), if the swi tch input is closed, it is

N.C

., if the switch input is open, it is in the ‘healthy’

MESSAGE

LOCAL ISOLATOR: DISABLE

Range: ENABLE, DISABLE

The Local Isolator switch input can be enabled or disabled using this Setpoint. When set to

ENABLE

a Local Isolator Trip will occur whenever the Local Isolator swit ch input is open. The trip will automatically rese t when the switch input is closed.

MESSAGE

AUTO PERMISSIVE INDICATION: MANUAL

AUTO MODE = SERIAL

Range: MANUAL, AUTO

Range: SERIAL, HARD-WIRED

GE Power Management MM3 Motor Manager 3 4-19

Page 50

4.4 S3 PROCESS 4 SETPOINTS

MESSAGE

SERIAL PERMISSIVE: DISABLE

Range: ENABLE, DISABLE

Allows serial comm ands to block all start commands (s erial or manual) until the unblock command is received. This setpoint must be enable d before serial start b lock commands are execute d. When set to any start blocks in effect are automatically unblock ed. The

setpoint can be used to indicate when a start was attempted while

ALARM

a block was in effect.

MESSAGE

START BLOCK ALARM: DISABLE

DISABLE COMMAND MODE CHANGE WHEN RUNNING

Range: ENABLE, DISABLE

This setpoint allows the active com mand mode to be ch anged while the motor is running. Wh en set to

DISABLE

, the motor must firs t be stopped

before the command mode can be changed (Auto or Manual).

The MM3 has 10 programmable switch inputs. Each input can have one of many functions assigned to it. Once a function is assigned to one Interlock input, that function cannot be assigned to any other Interlock input. The Interlock functions are:

NOT USED:

•

PROCESS INTERLOCK A-J:

• alarm / stop features bas ed on a switch input. Thi s function is used togethe r with the

DELAY, RUNNING OVERRIDE DELAY, OPERATION

Delay

setpoint sets the amount of time that the Process Interlock switch can remain open on the occurrence

This is stored if this Interlock switch input is not used.

The Process Interlock func tions are used to provide time dependent trip /

, and

INSTANTANEOUS ALARM

setpoints. The

STARTUP OVERRIDE

of a motor start. If the switc h remains unhealth y for long er than this time, a Process Interlock Trip or Process Interlock Stop will occur. If the Startup Override Delay is set to 0 the Process Interlock switch must be healthy in order for th e MM3 to allow the motor to s tart. If the Startup Override Delay is set to OFF this timer is disabled. The

RUNNING OVERRIDE DELAY

setpoint sets the amount of time that the Process interlock switch can be unhealthy during normal running. If th e Process Interlock switch goes unhealthy after a motor start and rem ain s u nhealthy for longer tha n th e Run n ing O v err ide Del ay, a Process Interloc k Trip or Process Interlock Stop will occur. If the

RUNNING OVERRIDE DELAY

is set to OFF, and the Pr ocess Inter lock switch goes unhealth y after the motor has s tarted , no Proces s Interlo ck Trip or Process Int erlock Stop will occur. The

OPERATION

setpoint determines wh ether the Process Interlock feature i s a Process Interlock

Trip (reset required in order to restart the motor) or a Process Interlock Stop (no reset required). The

INSTANTANEOUS ALARM

setpoint is used to create an alarm whenever the Process Interlock switch is unhealthy. There is no time delay associ ated with this al arm feature. No te that the name s of the Pro cess Interlock features can be chan ged to any 20 alp hanumeric character sequ ence. See

LOCK NAMES

for further detail.

S3: PROCESS \ INTER-

DISABLE

START BLOCK

PLANT INTERLOCK:

•

This function is used to provide a swi tch input trip feature si mila r to the Local Isol ator. When this switch is unhealthy a Plant Inte rlock Trip will occur. The Plant Interloc k Trip is automatical ly cleared when the Plant Interlock switch goes healthy.

LOCKOUT RESET:

•

This function is used to provide a separate reset facility for lockout trips (i.e. Overload, Ground Fault and St alled Rotor). These trips ar e considered to be more serious than other MM3 trips. When used, this switch will reset Overloa d Trips (regardless of Lockout Time), Grou nd Fault Trips and Stalled Rotor Trips only. All other trips must be reset using the RESET key. Note that the

USING RESET

setpoint in

S2: PROTECTION \ MOTOR PROTECTION OPTIONS

allows lockout trips to be res et us in g

RESET LOCKOUT

the RESET key if required.

SETPOINT ACCESS:

•

This function is used to provide security against unauthorized changing of MM3 setpoints. When this switch is unhealthy setpoints cannot be changed from the MM3 keypad. When this switch is healthy setpoints can be changed from the keypad. If this feature is not used Setpoints can always be changed from the keypad.

4-20 MM3 Motor Manager 3 GE Power Management

Page 51

4 SETPOINTS 4.4 S3 PROCESS

AUTO PERMISSIVE:

•

and can be further defined using the Permissive Switch is healthy, start comm ands can come from the Auto Start A / A uto Start B switches. When the Auto Permissive Switch is unhealthy the Auto Start A / Auto Start B switches are ignored. When the Auto Permissiv e Switch is healthy, start commands via the Start A and B swit ch inputs and the fac eplate are blocked. Se e tionality.

AUTO START A:

•

above. When the Auto Permissive switch is healthy, the Auto Start A switch can be used to start the motor.

AUTO START B:

•

Permissive switch i s healthy, the Auto Start B switch can be use d to start th e motor in appl ication s where Start B is used (Two Speed and Reversing starter types).

AUTO PERMISSIVE INDICATION:

•

LED is illuminated when in the auto perm is siv e m ode . Thi s allows the AUTO LED to be us ed for a uto permissive and serial control, or just for serial control.

AUTO MODE:

•

mode and the ‘AUTO’ button is press ed, the MM3 will execute s tart comm and s from the RS 485 seria l link only. Wh en in the ‘HARD-W IRED’ mode and t he ‘AUTO’ key is press ed, the MM3 wil l execute start c ommands from the ‘AUTO START A’ and ‘AUTO START B’ switch inputs only. Note: The ‘AUTO PERMISSIVE’ switch input must b e healthy in orde r to do auto starts. T his setpoint allows the user to chan ge the control mode from M ANUAL to HARD-W IRED AUTO via the AUTO/MANUAL buttons ins tead of hav ing it done automatically when the Auto Permissive switch input is put into the healthy position.

This function is used together with the AUTO START A / AUTO START B functions

AUTO PERMISSIVE INDICATION

This function is used in conjunction with the AUTO PERMISSIVE function described

This function is used together with the AUTO PERM ISSIVE function. When the Auto

This setpoint determines whether the AUTO or MANUAL indicator

This setpoint can be configured to either ‘SERIAL’ or ‘HARD-WIRED’. When in the ‘SERIAL’

and

AUTO MODE

and

AUTO MODE

setpoint descriptions for furthe r func-

setpoints. If the Auto

RESET EMERGENCY STOP TRIP:

•

switch is required. When this switch is healthy and an Emergency Stop Trip is present, the trip will be reset.

RESET UNDERCURRENT TRIP:

•

required. When this switch is healthy and an Undercurrent Trip is present, the trip will be reset.

TWO WIRE CONTROL:

•

start / stop co ntro l to maintained two wire start / stop con tr ol. W hen thi s s witc h is h eal thy, start commands (Start A / Start B switch in puts Au to Start A / A uto Star t B swit ch inputs ) must be maint ained i n the close d state in order for the MM3 to keep the motor runn ing. When the Start i nput is open ed, the MM 3 sees th is as a STOP command and both contactor outputs will open. This is useful in applications with limit switches, PLC control or Hand/Off/Auto control.

TEST SWITCH:

•

statistic al co unt ers ( see act ual valu es the interlock counter. This is used when control te sts on the contactor are bei ng performed and counte rs should not be updated. Note: if the motor is ru nning when this s witch is put into the healthy po sition, bot h contactors will open.

REMOTE PERMISSIVE:

•

START B keys and the S tar t A / Start B swi tc h in puts . W hen a Rem ote P er mi ssi ve swi tch is not used both of these start command s ourc es will op er ate wh en th e MM 3 is in Manu al m ode (M ANUAL LE D on ). Whe n the Remote Permissive switch is healthy, the Start A / Start B switch inputs are functional but the START A / START B keypad keys are disabled. When the Remote Permis sive switch is unhealthy, the START A / START B key pad ke ys ar e func ti ona l b ut th e S tar t A / S tar t B s witch inputs are disabled . Not e: A uto mod e or Hardwired Auto mode (AUTO LED on) disables both the Start A / Start B switches and the START A / START B keypad keys.

This function is us ed to c reate a Test switch facility. When the Test switch input i s heal thy

This function is us ed to p ro vide a means to switch fro m no rm al puls ed th r ee wi re

This function provides a means to interlock between the keypad START A /

This function is used wh en a separate Emergency Stop Trip Reset

This function is used when a separate Undercurrent Trip Reset switch is

A4: STATISTICS \ COUNTERS

) are not incremented with the exception of

COMMUNICATION SELECT:

•

keys. When thi s switch is healthy the MM3 is forced into Auto Serial mode (AUTO LED on). When th is switch is unhealthy, the MM3 reverts back to the mode that was pres ent before the switch was closed (Manual mode-MANUAL LED on or Hard-Wired Auto mode-AUTO LED on).

This function provides a facility to override the keypa d AUTO / MANUAL

GE Power Management MM3 Motor Manager 3 4-21

Page 52

4.4 S3 PROCESS 4 SETPOINTS

INTERLOCK COUNTER:

• of the programmable sw itch inputs . When the s witch input i s put into th e healthy position, the counte r will increment by one. Th e counter can be viewed on page name and units can be programmed on page the MM3 must have an ON t ime of no less than 100 ms and an OFF ti me of no less than 100 ms. This means that the MM3 can count up to 5 pulses per seco nd = 5 Hz. The co unte r will count up to 655 35 an d then roll over. The counter can be cleared on page nications link.

AUX RELAY 1 INHIBIT:

• Relay 1 from turning ON, or turn OFF AUX Relay 1 after it is already ON.

WYE-DELTA 1M CONT ACT:

• sition starter type. See Section 9.11: WYE-DELTA CLOSED TRANSITION STARTER on page 9–31.

WYE-DELTA 2S CONTACT:

• sition start type. See Section 9.11: WYE-DELTA CLOSED TRANSITION STARTER on page 9–31.

U/V RESTART INHIBIT:

• healthy position and all ows U/V restarts to tak e place when the switc h is unhealthy. Note that the undervoltage restart feature must be activated in

AUTO TRANS 2S CONTACT:

• open/closed transition starter type. See Section 9.7: AUTOTRANSFORMER OPEN TRANSITION STARTER on page 9–19 and 9.8: AUTOTRANSFO RMER CLOSED T RANSITION STARTER on page 9–

23.

This function provid es a mean s to coun t swi tch c losu res wh en assign ed to one

A4: STATISTICS \ COUNTERS

S3: PROCESS \ INTERLOCK NAMES

S1: CONFIGURATION \ STATISTICS

This function will overr ide/inhibit AUX Relay 1. When heal thy, it will prevent AUX

This function is used as a status feedback input for the wye-delta closed tran-

This function disables the undervoltage r estart feature when the switch is in the

S4: CONTROL

This function Is used as a status feedback i nput for the autotransformer

for this interlock function to have any effect.

. The interlock coun ter

. The digital input coming into

or via the serial commu-

STOP A:

• opens the correspond ing output relay will open. When the STOP A input is open the motor cannot b e started using start A commands or switch inputs.

STOP B:

• opens the correspond ing output relay will open. When the STOP B input is open the motor cannot b e started using start B commands or switch inputs.

REMOTE RESET:

• will not reset any t rips. When other s witch inputs are use d to reset specific tr ips the remote reset switch input will not reset those trips, i.e. Undercurrent Trip, Emergency Stop Trip, Lockout Trips.

MOTOR SELECTOR A/B:

• Manual mode the state o f this inte rlock d eterm ines wh ich of the tw o mo tors is use d for star ting (H ealth y = Motor B). When A is selected only the contactor A output relay will respond to start commands. When B is selected only the contactor B output relay will respond to start commands.

DUTY SELECT MAN/AUTO:

• input determines the mod e of operation for the Duty/Standby starter type eit her Manual or Auto. In the Auto mode the MM3 will alternatively star t Motor A and Motor B . When the number of starts is an even number Motor A will be started the next time a start command is issued. When the number of starts is odd Motor B will be starte d the next time a start co mmand is is sued. In the event of a tr ip on eith er motor, the motor that tripped will be prevented from starting until reset is pressed. All starts will default to the untripped motor. When the trip occurs the MM3 a utom ati ca ll y r ese ts th e trip to allow th e o the r mo tor to be started. The trip message be comes an a larm messag e which mus t be rese t to allow the tripped motor to start. If the second motor trips the MM3 will remain tripped until reset is pressed. The details of the Manual mode are described above under MOTOR SELECTOR A/B above.

This function is used for end of travel applications. When an interlock c onfigured for STOP A

This function is used for end of trav el applications. When an interlock configu red for STOP B

This function replaces the faceplate reset key. When configured the faceplate reset key

This setting is used in conjunction wi th the Duty/Standby starter type. In the

This setting is used in con junction with th e Duty/Standby s tarter type. This

Faceplate Stop trips, Process Stop trips and ESD Stop trips MUST be manually reset regardless of the Duty/Standby mode. Local Isolator and Plant Interlock trips reset only when the

NOTE

input is healthy.

4-22 MM3 Motor Manager 3 GE Power Management

Page 53

4 SETPOINTS 4.4 S3 PROCESS

STORE

4.4.3 INTERLOCK NAMES

PATH: SETPOINTS

PROCESS INTLK A NAME:

MESSAGE

PROCESS INTERLOCK A

PROCESS INTLK B NAME: PROCESS INTERLOCK B

PROCESS INTLK C NAME: PROCESS INTERLOCK C

PROCESS INTLK D NAME: PROCESS INTERLOCK D

PROCESS INTLK E NAME: PROCESS INTERLOCK E

PROCESS INTLK F NAME: PROCESS INTERLOCK F

PROCESS INTLK G NAME: PROCESS INTERLOCK G

PROCESS INTLK H NAME: PROCESS INTERLOCK H

PROCESS INTLK I NAME: PROCESS INTERLOCK I

PROCESS INTLK J NAME: PROCESS INTERLOCK J

INTLK COUNTER NAME: INTERLOCK COUNTER

S3 PROCESS tt INTERLOCK NAMES

ttt

Range: 20 alphanumeric characters

The MM3 allows the programming of user defined names for the process interlock functions. To store a name, use the / keys to change t he cursor to the desired letter o r number. Pre ss the

STORE

position. Repeat this sequence until the entire message has been entered. One of the characters is a space. T h is ca n be us ed t o r eplac e characters if no new character is required. If the cursor is at the end of the message, pressing causes the cursor to wrap around to the first position. This message will now appear on any actual values message relating to process interlock A.

Range: 20 alphanumeric characters

See

Range: 20 alphanumeric characters

See

Range: 20 alphanumeric characters

See

Range: 20 alphanumeric characters

See

Range: 20 alphanumeric characters

See

Range: 20 alphanumeric characters

See

Range: 20 alphanumeric characters

See

Range: 20 alphanumeric characters

See

Range: 20 alphanumeric characters

See

Range: 20 alphanumeric characters

This setpoint allows defining the name of the interlock counter. See

PROCESS INTERLOCK A NAME

VALUE

key. This stores the character and moves the cursor to the next

PROCESS INTERLOCK A NAME

for directions on entering characters.

MESSAGE

INTLK COUNTER UNITS: UNITS

Range: 20 alphanumeric characters

This setpoint allows defining the units of the interlock counter. See

PROCESS INTLK A NAME

for directions on entering characters.

GE Power Management MM3 Motor Manager 3 4-23

Page 54

4.4 S3 PROCESS 4 SETPOINTS

4.4.4 STOP CONFIGURATION

PATH: SETPOINTS

MESSAGE

PATH: SETPOINTS

S3 PROCESS

ttt

FIELD STOP:

UNLATCHED

FACE

PLATE STOP:

UNLATCHED

PROCESS STOP:

UNLATCHED

S3 PROCESS

ttt

STOP CONFIGURA TION

ttt

Range: LATCHED, UNLATCHED

If the MM3 detects that either Contactor A or Contactor B has dropped out without receivi ng a Stop command, an Exte rnal Stop sequence has occurred. If the

EXTERNAL STOP

LATCHED

the MM3 will initi ate an E merge nc y S top Trip. This trip condition

FIELD STOP

setpoint is set to

will be displayed. If the

UNLATCHED

FIELD STOP

the message

setpoint is set to

must be reset before the motor can be restarted.

Range: LATCHED, UNLATCHED

When set to latched, pres sing of the faceplate stop button will cause a latched trip. Pressing the rese t key will allow the motor to restart. If the MM3 is receiving a constant start signal the moto r will start as soon as reset is pressed.

Range: LATCHED, UNLATCHED

When set to latched, a momentary opening of a contact connected to Terminal 51 will cause a latched trip condition. Pressing the reset key will allow the motor to restart. If the MM3 is rece iving a c onstant start si gnal the motor will start as soon as reset is pressed.

4.4.5 ANALOG INPUT

ttt t

ANALOG INPUT

MESSAGE

ANALOG INPUT NAME: ANALOG INPUT

ANALO

G INPUT UNIT:

UNITS MINIMUM SCALE:

4 mA: 0

MAXIMUM SCALE: 20 mA: 1000

ANALOG ALARM LOW LEVEL: OFF

Range: 20 alphanumeric characters

The MM3 allows the user to progr am user defined name s for the analog input and units. To store the name, use / keys to

VALUE

change cursor to the desire d lett er or num ber. Press . This st ores

VALUE

STORE

the character and moves the cursor to the next position. Repeat this sequence until the entire message has been entered. One of the characters is a blank space which can be used if no new character is required. If the cursor is at the end of the message, pressing

STORE

causes the cursor to wra p around to the fir st position. This message will now appear on any actual values message relating to analog input.

RANGE: Range: 20 alphanumeric characters

See

ANALOG INPUT NAME

for details on storing user defined units.

Range: 0 to 20000; Step: 10

The analog input can be s caled to user defi ned values. Mi nimum (4 mA) and maximum (20 mA) scale values must be specified. Enter the minimum scale value with this setpoint.

Range: 10 to 20000; Step: 10

Enter the maximum scale value corresponding to a 20 mA analog input.

Range: 1 to 20000 or OFF; Step: 1

If the analog input scaled value drops below the level set by this setpoint, an Analog Input Low Alarm will occur. Note that the alarm level must be a value between the

MINIMUM SCALE

and

MAXIMUM SCALE

values.

4-24 MM3 Motor Manager 3 GE Power Management

Page 55

4 SETPOINTS 4.4 S3 PROCESS

MESSAGE

ANALOG ALARM LOW DELAY: 5 s

ANALOG ALARM HIGH LEVEL: OFF

ANALOG ALARM HIGH DELAY: 5 s

ANALOG TRIP LOW LEVEL: OFF

ANALOG TRIP LOW OVERRIDE: 5 s

ANALOG TRIP LOW DELAY: 5 s

Range: 1 to 600 seconds or OFF; Step: 1 second

The analog input scaled value must be below the

for the time specified by this setpoint before an alarm will occur.

LEVEL

ANALOG ALARM LOW

Range: 1 to 20000 or OFF; Step: 1

If the analog in put s caled v al ue excee ds th e l ev el set by thi s s etpo in t, a n Analog Input High Alarm will oc cur. Note that the alarm level must be a value between the

MINIMUM SCALE

and

MAXIMUM SCALE

values.

Range: 1 to 600 seconds or OFF; Step: 1 second

The analog input scaled value must be above the

for the time specified by this setpoint before an alarm will occur.

LEVEL

ANALOG ALARM HIGH

Range: 1 to 20000 or OFF; Step: 1

If the analog input scaled value drops below the level set by this setpoint, an Analog Input Lo w Trip will occur. Note that the trip level must be a value between the

MINIMUM SCALE

and

MAXIMUM SCALE

values.

Range: 1 to 125 seconds or OFF; Step: 1

The analog leve l must reac h a heal thy stat e (grea ter than trip lev el) a fter a start within the amount of tim e s et by this setpoint. If the v alu e is 0 , th e analog level must be healthy when a start is initiated or an analog trip will occur immediately. If set to

OFF

, the trip will occur if the analog level is

unhealthy, regardless if the motor is running or stopped.

Range: 1 to 600 seconds or OFF; Step: 1 second

The analog input scaled value must be below the

ANALOG TRIP LOW LEVEL

for the time specified by this setpoint before a trip will occur.

MESSAGE

ANALOG TRIP HIGH LEVEL: OFF

ANALOG TRIP HIGH OVERRIDE: 5 s

ANALOG TRIP HIGH DELAY: 5 s

Range: 1 to 20000 or OFF; Step: 1

If the analog in put s caled v al ue excee ds th e l ev el set by thi s s etpo in t, a n Analog Input High Trip will occur. Note that the trip l evel must b e a v alue between the

MINIMUM SCALE

and

MAXIMUM SCALE

values.

Range: 1 to 125 seconds or OFF; Step: 1

The analog leve l must reach a healthy sta te (less than trip level) afte r a start within the amo unt of time set by t his setpoint. If the v alue is 0, the analog level must be healthy when a start is initiated or an analog trip will occur immediately. If the value is set to OFF, the trip will occur if the analog level is unhealthy, regardless if the motor is running or stopped.

Range: 1 to 600 seconds or OFF; Step: 1 second

The analog input scaled value must be above the

ANALOG TRIP HIGH LEVEL

for the time specified by this setpoint before a trip will occur.

GE Power Management MM3 Motor Manager 3 4-25

Page 56

4.4 S3 PROCESS 4 SETPOINTS

4.4.6 PROCESS OPTIONS

PATH: SETPOINTS

MESSAGE

S3 PROCESS

ttt

MANUAL/AUTO KEYS: Enable

START A KEY: Enable

START B KEY: Enable

START KEY MODE: Normal

STOP SWITCH INPUT: Enable

ttt tt

PROCESS OPTIONS

Range: Enable, Disable

When set to "Enable", the user can change to control mode from the keypad to either Manual or Auto. When set to "Disable", the unit is considered to be in both Manual and Auto mode, and will acc ept start commands from the faceplate, switch inputs, and over the serial link.

Range: Enable, Disable

When set to "Enable", the user can start the motor with the key

STARTA

when the motor status is available to start and the MM3 is in Manual mode. When set to "Disable", any keypress is ignored.

STARTA

Range: Enable, Disable

When set to "Enable", the user can start the motor with the key

STARTB

when the motor status is available to start and the MM3 is in Manual mode. When set to "Disable", any keypress is ignored.

STARTB

Range: Normal, Test Only

When set to "Normal", the and keys operate as described in Section 3.2: KEYPAD. When set to "Test Only", the and

STARTA STARTB

keys will only be rec ognized when th e unit is in Test Mode. To be in Test Mode, one of the interlock inputs must be programmed as "Test" and energized.

Range: Enable, Disable

When set to "Enable", any opening of the stop switch input while the motor is running causes the motor to stop. When se t to "Disable", any stop command received on the stop switch input will be ignored.

4-26 MM3 Motor Manager 3 GE Power Management

Page 57

4 SETPOINTS 4.5 S4 CONTROL

4.5 S4 CONTROL 4.5.1 DESCRIPTION

]] SETPOINTS ]] S4: CONTROL

This page is used to config ure all control fea tures in the MM3. S etpoin ts Pa ge 4 is divi ded into three secti ons, UNDERVOLTAGE AUTO-RESTART, AUX RELAY 1 CONFIG, and AUX RELAY 2 CONFIG.

]] SETPOINTS ]] S4: CONTROL

PATH: SETPOINTS

tttt

UNDERVOLTAGE

MESSAGE

RESTART: ENABLE

MESSAGE

] UNDERVOLTAGE ] AUTO RESTART

MESSAGE

] AUX RELAY 1 CONFIG ]

] AUX RELAY 2 CONFIG

MESSAGE

S4: CONTROL t UNDERVOLTAGE AUTO RESTART

]

Range: ENABLE, DISABLE

It is possible to restart the motor after a momentary power loss if this feature is enabl ed. When t he control vol tage (deriv ed from th e incoming motor supply) drops below the dropout voltage, bo th contactors are deenergized. Voltage thresholds for the two internally set control voltage levels are 80 V for 120 V setting and 15 0 V for 240 V setting . At nominal voltage, the MM3 ride s thr oug h a po wer ou tage le ss th an 135 ms (varies according to the number of ou tput relays en ergized at the time of po wer failure). Critical data is sav ed to E that exceeds the MM3 ride-through initializes a backup timer that continues to run without power for approxima tely 1 hour. Once control power is restored, th e MM3 can take up t o 300 ms to initialize; thi s time includes the in itializing of the m icroprocessor, variables in the code, the determination that a restart is required, and the closure of the internal output relay. The reaction time of the con tactor will be in add ition to the 300 ms power-up time. If control voltage is restored within the

RESTART POWER LOSS TIME

(0.1 to 0.5 sec.), the m otor will be restarted

immediately. If the supply is restored after the

LOSS TIME

be restarted after the required, set the

DISABLE

but before the

DELAY RESTART POWER LOSS TIME

RESTART TIME DELAY

DELAY RESTART POWER LOSS TIME

if this feature is not required.

4.5.2 UNDERVOL TAGE AUTO RESTART

PROM at this time. A power outage

IMMED.

IMMED. RESTART POWER

, the motor will

. If a delayed restart is always

UNLIMITED

. Select

MESSAGE

IMMED. RESTART POWER LOSS TIME: 200 ms

DELAY RESTART POWER LOSS TIME: 2.0 s

RESTART TIME DELAY

2.0 s

Range: 100 to 520 ms or OFF; Step: 20 ms

This is the time m easured by the MM3 backup processor; it i s not the time the AC power has been off. See

UNDERVOLTAGE RESTART

for details.

Range: 0.1 to 10 seconds or TIME UNLIMITED; Step: 0.1 sec.

This is the time m easured by the MM3 backup processor; it i s not the time the AC power has been off. See

UNDERVOLTAGE RESTART

for details.

Range: 0.2 to 1200.0 seconds; Step: 0.2 seconds

See

UNDERVOLTAGE RESTART

for details.

GE Power Management MM3 Motor Manager 3 4-27

Page 58

4.5 S4 CONTROL 4 SETPOIN TS

4.5.3 AUX 1/2 RELAY CONFIG

PATH: SETPOINTS

tttt

S4 CONTR OL tt AUX 1/2 RELAY CONFIG

The MM3 has two auxilia ry programma ble outp ut relays. The se two outputs can be assi gned any of th e functions listed below. Once a function has been assigned to one of the auxiliary relays it cannot be assigned to the other with the exception of the SERIAL CONTROL function which can be set to both auxiliary relays.

NOTE

MESSAGE

The setpoints listed under the shown for

AUX RELAY 1 FUNCTION

AUX RELAY 1 CONFIG

SERIAL CONTROL

AUX RELAY 2 CONFIG

Range:

SERIAL CONTROL, TRIPS, ALARMS, PRE CONTACTOR A, POST CONTACTOR A, POST CONTACTOR B, MOTOR AVAILABLE-MAN, LOAD

page operate in the same manner as the setpoints

INCREASE ALARM, UNDERCURRENT TRIP, UNDERPOWER TRIP, KEYPAD RESET, INTERLOCK 1, INTERLOCK 2, INTERLOCK 3, INTERLOCK 4, INTERLOCK 5, INTERLOCK 6, INTERLOCK 7, INTERLOCK 8, INTERLOCK 9, INTERLOCK 10, AUTO MODE, MOTOR RUNNING, GROUND FAULT TRIP, WYE-DELTA CLS TRANS, AUTOTRANSFORMER 2S, NOT USED, PRE

CONTACTOR B, SEGREGATED G/F ALARM, THERMAL CAPACITY ALARM, MOTOR AVAILABLE AUTO, MOTOR AVAILABLE, OVERLOAD, SOFT STARTER BYPASS

The dual form “C” AU X Relay 1 can be configur ed to activa te on various conditions as described below.

MESSAGE

AUX RELAY 1 DELAY

5 s

Range: 0 to 125 sec.; Step: 1

Provides a delayed energization of AUX Relay 1 when

POST CONTACTOR B

is selected as the

AUX RELAY 1 FUNCTION

POST CONTACTOR A

MESSAGE

AUX RELAY 1 PRE START DELAY: 5 s

AUX RELAY 1 POST START DELAY: OFF s

ENERGIZE ON MOTOR START DELAY: 5 s

DE-ENERGIZE ON MOTOR STOP DELAY: 5 s

AUX 1 OPERATION: NON-FAILSAFE

Range: 0 to 900 sec.; Step: 1

Determines how long the AUX Relay 1 will energize be fore energizing Contactor A. When set to 0, both AUX Relay 1 and Contactor A will energize at the same time.

Range: 0 to 125 sec. or OFF; Step: 1

Determines how long AUX 1 remains energized after Contactor A closes. When set to 0, AUX 1 de-energizes as soon as Contactor A closes. When

OFF

set to

, AUX 1 remains energized until Contactor A opens.

Range: 0 to 125 sec.; Step: 1

Provides a delayed energization of the AUX Relay 1 when

RUNNING

is selected as the

AUX RELAY 1 FUNCTION

. The AUX Relay 1

MOTOR

energizes after this time delay on the occurrence of a motor start.

Range: 0 to 125 sec.; Step: 1

Provides a delayed de-energization of the AUX Relay 1 when

RUNNING

is selected as the

AUX RELAY 1 FUNCTION

. The AUX Relay 1 will

MOTOR

de-energize after this time delay on the occurrence of a motor stop.

Range: FAILSAFE, NON-FAILSAFE

Choose between

NON-FAILSAFE

mode, the relay will be de-energized in its inactive state and

energized in its active state. In

FAILSAFE

operation of AUX Relay 1 . In

mode, the relay will be energized

in its inactive state and de-energized in its active state.

MESSAGE

DELAY CONTACTOR G/F TRIP BY: 0 ms

Range: 0 to 1000 ms; Step: 100 ms

4-28 MM3 Motor Manager 3 GE Power Management

Page 59

4 SETPOINTS 4.5 S4 CONTROL

RESET

SERIAL CONTROL

•

TRIPS

•

: The AUX Relay 1 will be ene rgized when th e MM3 is trippe d. Resetting t he MM3 will de- energize

the AUX Relay 1.

ALARMS PRE CONTACTOR A

tactor A relay will start the motor after the delay specified in the AUX Relay 1 will de-ener gize after the energizes.

PRE CONT ACTOR B:

tactor B relay will start the motor after the delay specified in the Aux Relay will de-energize after the energizes. Pre Conta ctor B is active for the TW O SPEED, FV REVE RSING and DU TY/STANDBY starter types only.

POST CONTACTOR A

the

POST CONTACTOR B

the

MOTOR AVAILABLE MANUAL

manually the AUX Relay 1 will be energized. Any other Motor Status indication will cause the AUX Relay 1 to be de-energized.

: The AUX Relay 1 will be energized while any alarm is present.

AUX RELAY 1 DELAY

: The AUX Relay 1 can be energized or de-energized via the serial port.

: The AUX Relay 1 will energize when the MM3 receives a start command. The Con-

AUX RELAY 1 PRE START DELAY

AUX RELAY 1 POST START DELAY

The AUX Relay will energize when the MM3 receives a start B command. The Con-

AUX RELAY 1 PRE START DELAY

AUX RELAY 1 POST START DELAY

: The AUX Relay 1 will energize after the Contactor A relay in the time specified by

setpoint. The AUX Relay 1 will de-energize when Contactor A de-energizes.

: The AUX Relay 1 will energize after the Contactor B relay in the time specified by

setpoint. The AUX Relay 1 will de-energize when Contactor B de-energizes.

: When the Motor Status mess age indica tes that th e motor can be started

times out or when Contactor A de-

times out or when Contactor B de-

setpoint. The

LOAD INCREASE

•

UNDERCURRENT TRIP

•

UNDERPOWER TRIP

•

KEYPAD RESET

•

INTERLOCK 1

•

INTERLOCK 2

•

INTERLOCK 3

•

INTERLOCK 4

•

INTERLOCK 5

•

INTERLOCK 6

•

INTERLOCK 7

•

INTERLOCK 8

•

INTERLOCK 9

•

INTERLOCK 10

•

AUTO MODE

•

MOTOR RUNNING

•

Motor Start Delay and Motor Stop Delay.

: The AUX Relay 1 will energize while a Load Increase Alarm is present.

: The AUX Relay 1 will energize while an Undercurrent Trip is present.

: The AUX Relay 1 will energize while an Underpower Trip is present.

: The AUX Relay 1 will energize while the key is pressed. : The AUX Relay 1 will energize while the Interlock 1 switch input is closed. : The AUX Relay 1 will energize while the Interlock 2 switch input is closed. : The AUX Relay 1 will energize while the Interlock 3 switch input is closed. : The AUX Relay 1 will energize while the Interlock 4 switch input is closed. : The AUX Relay 1 will energize while the Interlock 5 switch input is closed. : The AUX Relay 1 will energize while the Interlock 6 switch input is closed. :The AUX Relay 1 will energize while the Interlock 7 switch input is closed. : The AUX Relay 1 will energize while the Interlock 8 switch input is closed. : The AUX Relay 1 will energize while the Interlock 9 switch input is closed.

: The AUX Relay 1 will energize while the Interlock 10 switch input is closed.

: The AUX Relay 1 will energize when the AUTO LED is on.

: The AUX Relay 1 will energize while the motor is running in conjunction with the

GROUND FAULT TRIP

•

WARNING

The MM3 energize s the auxi liary rela y and d e-energize s contact or A at t he sam e time the ground fault trip occurs. See the warning notes under Motor Protection/Ground Fault for more details. Use the Delay Contactor Ground Fault Tr ip By setting for coordination.

: The AUX Relay 1 will energize when a ground fault trip occurs.

GE Power Management MM3 Motor Manager 3 4-29

Page 60

4.5 S4 CONTROL 4 SETPOIN TS

WYE DELTA CLS TRANS

• starter type. See Sec tion 9.11: WYE-DELTA CLOSED TRANS ITION STARTER on page 9–31 for m ore details.

AUTOTRANSFORMER 2S

• transition starter ty pe. See Section 9.7: A UTOTRANSFORMER OPEN TRANSITION STARTER on page 9–19 and 9.8: AUTOTRANSFORMER CLOSED TRANSITION STARTER on page 9–23 for more details.

NOT USED

•

SEGREGA TED G/F ALARM

• If the other AUX Relay is configured for ALARMS it will not operate until another alarm occurs that is not a ground fault alarm.

THERMAL CAPACITY ALARM

•

MOTOR AVAILABLE AUTO:

• able to start in Auto Mode.

MOTOR AVAILABLE:

• start regardless of which mode the MM3 is presently in (Auto or Manual). The AUX Relay will remain active when the motor is running to indicate normal operation (that is, no stop inputs or trips).

OVERLOAD

•

SOFT STARTER BYPASS

• Appendix 9.13: SOFT STARTER on page 9–36 for more details.

: This function may be stored if the AUX Relay is not used. Factory default is serial control.

: This AUX Relay function will activate the Aux Relay when the motor is tripped on overload.

: This function mu st be configured when u sing the wye delta clo sed transition

: This function must be configured when using the autotransformer open/closed

: This function will energize the AUX Relay when a ground fault alarm occurs.

: The AUX Relay 1 will energize when a thermal capacity alarm is present.

This AUX Relay function will activate the AUX Relay when the motor is avail-

This AUX Relay function will activate the AUX Relay when the motor is available to

: This AUX Rela y functio n can be con figured wh en using soft starter type. Se e

4-30 MM3 Motor Manager 3 GE Power Management

Page 61

4 SETPOINTS 4.6 S5 MONITORING

4.6 S5 MONITORING 4.6.1 DESCRIPTION

]] SETPOINTS ]] S5: MONITORING

This page is used to enter setpoints for monitoring and motor maintenance. Setpoints Page 5 has two sections, PLANT CONDITION and PRESET COUNTERS AND TIMERS

]] SETPOINTS ]] S5: MONITORING

MESSAGE

] PLANT CONDITION ]

] PRESET COUNTERS

MESSAGE

] AND TIMERS

4.6.2 PLANT CONDITION

PATH: SETPOINTS

MOTOR GREASING

MESSAGE

INTERVAL: OFF hrs

CONTACTOR INSPECTION

OFF x 1000 OPS

MAX MOTOR STOPPED TIME: OFF hrs

ttttt

S5 MONITORING t PLANT CONDITION

Range: 100 to 50000 hours or OFF; Step: 100 HOURS

Enter the in terval at which the mot or beari ngs must be lubr icated. When the Motor Running Time exceeds this setpoint a MOTOR GREASING INTERVAL ALARM is generated. Use the

S1: CONFIGURATION \ STATISTICS

feature is not required set this setpoint to OFF.

Range: 1000 to 10000000 operations or OFF; Step: 1000 ops.

Enter the interv al at which the co ntactor contacts m ust be inspected for wear. When the

NUMBER OF STARTS

CONTACTOR INSPECTION INTERVAL ALARM is generated. Use the

S1: CONFIGURATION \ STATISTICS \ CLEAR COUNTERS NUMBER OF STARTS

OFF

counter. If this feature is not requir ed s et this s etp oin t

Range: 10 to 10000 hours or OFF; Step: 10 hours

Enter the maximum inter val that t he mo tor can be left not running. W hen the Motor Stopped Time exceeds this setpoint, a MAXIMUM MOTOR STOPPED TIME ALARM is generated. Start the motor to clear the Motor Stopped Time. If this feature is not required set this setpoint to

CLEAR TIMERS

setpoint in

to clear the Motor Run ning Hours. If this

counter exceeds this setpoint a

setpoint to clear the

OFF

GE Power Management MM3 Motor Manager 3 4-31

Page 62

4.6 S5 MONITORING 4 SETPOINTS

4.6.3 PRESET COUNTERS AND TIMERS

PATH: SETPOINTS

MESSAGE

ttttt

S5 MONITORING

PRESET RUNNI NG HO URS: 0 HRS

PRESET STOPP ED HO URS: 0 HRS

PRESET NUMBER OF STARTS: X100

PRESET OVERLOAD TRIPS: 0

PRESET THERMISTOR TRIPS: 0

PRESET GROUND FAULT TRIPS: 0

PRESET SINGLE PHASE TRIPS: 0

PRESET ACCELERATION TRIPS: 0

PRESET UNDERCURRENT TRIPS: 0

PRESET UNDERPOWER TRIPS: 0

PRESET STALLED ROTOR TRIPS: 0

PRESET CONTROL TRIPS: 0

PRESET INTERLOCK COUNTER: 0

PRESET COUNTERS AND TIMERS

Range: 0 to 65535; Step 1

Sets the number of Running Hours to a predetermined value.

Range: 0 to 65535; Step 1

Sets the number of Stopped Hours to a predetermined value.

Range: 0 to 65535; Step 1

Sets the Number Of Starts to a predetermined value within 100 starts.

Range: 0 to 65535; Step 1

Sets the number of Overload Trips to a predetermined value.

Range: 0 to 65535; Step 1

Sets the number of Thermistor Trips to a predetermined value.

Range: 0 to 65535; Step 1

Sets the number of Ground Fault trips to a predetermined value.

Range: 0 to 65535; Step 1

Sets the number of Single Phase trips to a predetermined value.

Range: 0 to 65535; Step 1

Sets the number of Acceleration trips to a predetermined value.

Range: 0 to 65535; Step 1

Sets the number of Undercurrent trips to a predetermined value.

Range: 0 to 65535; Step 1

Sets the number of Underpower trips to a predetermined value.

Range: 0 to 65535; Step 1

Sets the number of Stalled Rotor trips to a predetermined value.

Range: 0 to 65535; Step 1

Sets the number of Control trips to a predetermined value.

Range: 0 to 65535; Step 1

Sets the number of Interlock Counter operations to a predetermined value.

4-32 MM3 Motor Manager 3 GE Power Management

Page 63

4 SETPOINTS 4.7 S6 FACTORY DATA

4.7 S6 FACTORY DATA 4.7.1 DESCRIPTION

]] SETPOINTS ]] S6: FACTORY DATA

This page contain s information about the versi on of the MM3 and data for GE Power Management service technicians. Setpoints Page 6 is divided into three sections: PRODUCT FIRMWARE IDENTIFICATION; PRODUCT MODEL IDENTIFICATION, and FACTORY SERVICE DATA.

]] SETPOINTS ]] S6: FACTORY DATA

PATH: SETPOINTS

tttttt

MOD NUMBER(S): 000

MESSAGE

MOTOR MANAGER 3 VERSION: X.XX

BOOT PROGRAM VERSION: X.XX

DISPLAY PROGRAM VERSION: X.XX

MESSAGE

] PRODUCT FIRMWARE ] IDENTIFICATION

MESSAGE

] PRODUCT MODEL ] IDENTIFICATION

] FACTORY SERVICE

MESSAGE

] DATA

4.7.2 PRODUCT FIRMWARE IDENTIFICATION

S6 FACTORY DATA t PRODUCT FIRMWARE IDENTIFICATION

Range: for identification only

If the MM3 has been modified s o that it is no longe r a standard model , a modification number will be displayed in this message.

Range: for identification only

This message identifies the MM3 main firmware version.

Range: for identification only

This message identifies the MM3 Boot Program version.

Range: for identification only

This message identifies the MM3 Display Program version (when the display option has been ordered).

MESSAGE

SUPERVISOR PROGRAM VERSION: X.XX

MM3 HARDWARE REVISION: X.XX

Range: for identification only

This message identifies the MM3 Supervisor Program version.

Range: for identification only

This message identifies the Hardware revision the currently loaded firmware was compiled for.

GE Power Management MM3 Motor Manager 3 4-33

Page 64

4.7 S6 FACTORY DATA 4 SETPOINTS

4.7.3 PRODUCT MODEL IDENTIFICATION

PATH: SETPOINTS

MESSAGE

PATH: SETPOINTS

MESSAGE

tttttt

ORDER CODE: MM3-2-A-W-120

SERIAL NUMBER: D7191234

tttttt

FACTORY SERVICE PASSCODE: 0

S6 FACTORY DATA tt PRODUCT MODEL IDENTIFICATION

Range: for identification only

This message identifies the MM3 order code.

Range: for identification only

This message identifies the MM3 serial number.

4.7.4 FACTORY SERVICE DATA

S6 FACTORY DATA

FACTORY SERVICE DATA

ttt

Range: 0 to 9999; Step: 1

This message identifies the date of manufacture of the MM3 relay.

4-34 MM3 Motor Manager 3 GE Power Management

Page 65

4 SETPOINTS 4.8 MM3 STANDARD OVERLOAD CURVES

4.8 MM3 STANDARD OVERLOAD CURVES 4.8.1 OVERLOAD CURVE TRIP TIMES

Table 4–1: STANDARD OVERLOAD CURVE TRIP TIMES

OVERLOAD

LEVEL

1.05 7200 7200 7200 7200 7200 7682 10243 12804

1.10 416 833 1250 1666 2916 3750 5000 6250

1.20 198 397 596 795 1392 1789 2386 2982

1.30 126 253 380 507 887 1141 1521 1902

1.40 91 182 273 364 638 820 1093 1367

1.50 70 140 210 280 490 630 840 1050

1.75 42 84 127 169 297 381 509 636

2.00 29 58 87 116 204 262 350 437

2.25 21 43 64 86 150 193 258 323

2.50 16 33 50 66 116 150 200 250

2.75 13 26 39 53 93 119 159 199

3.00 10 21 32 43 76 98 131 164

3.50 7.8152331546993116

4.00 5.811172340526987

4.50 4.5 9 13 18 31 40 54 68

5.00 3.6 7.2 10 14 25 32 43 54

5.50 3 6 9 12 20 26 35 44

6.00 2.5 5 7.5 10 17 22 30 37

6.50 2.1 4.2 6.3 8.4 14 19 25 31

7.00 1.8 3.6 5.4 7.2 12 16 21 27

7.50 1.6 3.2 4.8 6.4 11 14 19 23

8.00 1.4 2.8 4.2 5.6 9.8 12 16 20

1 2 3 4 5 6 7 8

CURVE NUMBER

All trip times are in seconds.

NOTE

GE Power Management MM3 Motor Manager 3 4-35

Page 66

4.8 MM3 STANDARD OVERLOAD CURVES 4 SETPOINTS

MM2/MM3 STANDARD TIME/CURRENT

OVERLOAD CURVES

GE POWER MANAGEMENT

100000

10000

1000

TIME (SECONDS)

100

CURVE #CURVE #

.05

0.1

0.5

MULTIPLE OF PICKUP CURRENT (PER UNIT)

3456789

807638D4.CDR

100

Figure 4–2: GE POWER MANAGEMENT TIME/OVERCURRENT CURVES

K+E 11” x 17” format of time/overcurrent curves are available from factory upon request.

4-36 MM3 Motor Manager 3 GE Power Management

Page 67

4 SETPOINTS 4.9 NEMA COMPATIBLE OVERLOAD CURVES

4.9 NEMA COMPATIBLE OVERLOAD CURVES 4.9.1 NEMA CURVE TRIP TIMES

Table 4–2: NEMA COMPATIBLE OVERLOAD CURVE TRIP TIMES

OVERLOAD

LEVEL

1.05 3349 5024 6698 10047

1.10 1635 2452 3269 4904

1.20 780 1170 1560 2340

1.30 497 746 995 1492

1.40 358 536 715 1073

1.50 275 412 549 824

1.75 166 250 333 499

2.00 114 172 229 343

2.25 84 127 169 253

2.50 65 98 131 196

2.75 52 78 105 157

3.00 43 64 86 129

3.50 30 46 61 91

4.00 23 34 46 67

4.50 17.8 27 36 53

5.00 14.3 21 29 43

5.50 11.7 17.6 23 35

6.00 9.8 14.7 19.6 29.4

6.50 8.3 12.4 16.6 24.9

7.00 7.1 10.7 14.3 21.4

7.50 6.2 9.3 12.4 18.6

8.00 5.4 8.1 10.9 16.3

CLASS10 CLASS 15 CLASS 20 CLASS 30

CURVE

All trip times are in seconds.

NOTE

GE Power Management MM3 Motor Manager 3 4-37

Page 68

4.9 NEMA COMPATIBLE OVERLOAD CURVES 4 SETPOINTS

GE POWER MANAGEMENT

100000

10000

1000

MM2/MM3 NEMA COMPATIBLE TIME/CURRENT

OVERLOAD CURVES

TIME (SECONDS)

100

CURVE #CURVE #

CLASS 30CLASS 30

789

CLASS 20CLASS 20

CLASS 15CLASS 15

CLASS 10CLASS 10

807903D4.CDR

100

0.1

0.5

456

MULTIPLE OF PICKUP CURRENT (PER UNIT)

Figure 4–3: NEMA COMPATIBLE TIME/OVERCURRENT CURVES

K+E 11" × 17" format of time/overcurrent curves are available from factory upon request.

4-38 MM3 Motor Manager 3 GE Power Management

Page 69

4 SETPOINTS 4.10 S7 TESTING

4.10 S7 TESTING 4.10.1 DESCRIPTION

]] SETPOINTS ]] S7: TESTING

This page contain s information about the versi on of the MM3 and data for GE Power Management service technicians. Setp oints Page 7 is divided into seven sections: TE ST CONFIGURATION, TEST RELAYS AND LEDS, CURRENT SIMULATION, ANALOG OUTPUT SIMULATION, ANALOG INPUT SIMULATION, SWITCH INPUTS SIMULATION, and THERMISTOR SIMULATION.

]] SETPOINTS ]] S7: TESTING

PATH: SETPOINTS

ttttttt

DISPLAY CONTACTOR

MESSAGE

MONITORING: NO

MESSAGE

] TEST CONFIGURATION ]

MESSAGE

] TEST RELAYS & LEDS ]

] CURRENT SIMULATION ]

] ANALOG OUTPUT ] SIMULATION

] ANALOG INPUT ] SIMULATION

] SWITCH INPUTS ] SIMULATION

] THERMISTOR

MESSAGE

S7 TESTING t TEST CONFIGURATION

] SIMULATION

Range: YES, NO

This message enables or disabled contactor monitoring during simulation tests and prevents Open Control Circuit and Welded Contactor Alarms.

4.10.2 TEST CONFIGURATION

MESSAGE

MONITORING DISABLED FOR: 15 min

DISABLE STATISTICS LOGGING: NO

Range: 5 to 300 minutes, UNLIMITED; Step: 5

Selects the desired length of time that monitoring will be disabled.

Range: YES, NO

This setpoint determines whether statistics are accumulated during simulation tests (for example, number of starts, etc.).

GE Power Management MM3 Motor Manager 3 4-39

Page 70

4.10 S7 TESTING 4 SETPOI N T S

VALUE

4.10.3 TEST RELAYS AND LEDS

PATH: SETPOINTS

OPERATION TEST:

MESSAGE

NORMAL MODE

ttttttt

S7 TESTING tt TEST RELAYS AND LEDS

Range: NORMAL MODE, CONTACTOR A ON, CONTACTOR B ON,

AUX RELAY 1 ON, AUX RELAY 2 ON, ALL RELAYS ON, RUNNING LED ON, STOPPED LED ON, TRIPPED LED ON, ALARM LED ON, AUTO LED ON, MANUAL LED ON, ALL LEDS ON

See description below.

To verify correct operation of output relay wiring, each output relay and status indicator can be manually forced on or off via the keypad or serial port. Testing is only allowed if the re is no phase and ground cur rent present and current simulation is turned off.

If the test is attempted while current is present, the setpoint will be forced to NORMAL MODE and the following flash message will be displayed for 3 seconds.

RELAY TEST BLOCKED CURRENT PRESENT

S7: TESTING \ CURRENT SIMULATION \ SIMULATION

is ON, the setpoint will be forced to NORMAL MODE and the

following flash message will be displayed for 3 seconds.

RELAY TEST BLOCKED AMPS SIMULATION ON

If testing is attemp ted v ia the s eri al por t whi le phase or ground c ur rent is p re se nt or s im ula tio n mod e i s on , a n error code will be returne d.

While the

OPERATION TEST

setpoint is displ ayed, use th e or keys to scr oll to the de sired o utput relay and/or sta tus indicator to be tes ted. As long as the tes t message remains displayed the respecti ve output relay and/or status indicator will be forced to remain energized. As soon as a new message is selected, the respective output relay and/or status indicator return to normal operation.

As a safeguard, relay and LED test will turn off automatically if:

• power to the MM3 is turned off and on

• phase or ground current is detected by the MM3

• current simulation is turned on

• new message is displayed

4-40 MM3 Motor Manager 3 GE Power Management

Page 71

4 SETPOINTS 4.10 S7 TESTING

CURRENT SIMULATION

HAS BEEN ENABLED

CURRENT SIMULATION

HAS BEEN DISABLED

4.10.4 CURRENT SIMULATION

PATH: SETPOINTS

ttttttt

S7 TESTING

CURRENT SIMULATION

ttt

Simulated currents ca n be forced instead of the ac tual curre nts sensed by the MM3 CTs. This allows verification of all current relat ed r el ay functi ons su ch as time d over l oad t rip. It also allows verificati on th at ex ter n al tri p and alarm wiring is responding correctly.

Range: ON, OFF

Enter the required s imulatio n phase and gr ound curr ents in the fol lowing

MESSAGE

SIMULATION: OFF

messages. Enter ON to switch from actual curren ts to the pr ogrammed simulated values. This command is ignored if real phase or ground current is present. Set to

OFF

after simulation is complete. As a

safeguard, simulation will automatically turn off if:

• real phase or ground current is detected while in simulation mode

• power to the MM3 is turned off and on

• the

S7: TESTING \ CURRENT SIMULATION \SIMULATION ENABLED FOR

time

has elapsed since simulation was first enabled

• MM3 is tripped When

SIMULATION

is turned ON, the following flas h messag e is displa yed

for 3 seconds.

When

SIMULATION

is turned

OFF

, the following fl ash message is di s pla ye d

for 3 seconds.

MESSAGE

SIMULATION ENABLED FOR: 15 min

PHASE A CURRENT

0 A

PHASE B CURRENT:

0 A

PHASE C CURRENT:

0 A

Range: 5 to 300 min. or UNLIMITED; Step: 5

Select the desired leng th of time that simulation will be enabled. When the programmed time has elapsed, current simulation will turn off. If

UNLIMITED

is selected, simulated current will be used until one of the

above mentioned conditions is met.

Range: 0 to 65535 A; Step: 1

Enter the desired phase current for simulation. For example, to verify operation of the unbalance function. Enter the following simulation values assuming

S2: MOTOR PROTECTION THERMAL \ FULL LOAD CURRENT:

100A

create an unbalance of 40%.

•

= 100 A,

Now set

= 80 A,

= 150 A

S7: TESTING \ CURRENT SIMULATION \ SIMULATION:

. The relay will see this s imulated curre nt in all 3 phas es instead of the actual inpu t current. The MM3 shoul d trip after a 5 second delay. Set

OFF

CURRENT SIMULATION \ SIMULATION:

after testing is complete.

S7: TESTING \

Range: 0 to 65535 A; Step: 1

See description for

PHASE A CURRENT

above.

Range: 0 to 65535 A; Step: 1

See description for

PHASE A CURRENT

above.

GE Power Management MM3 Motor Manager 3 4-41

Page 72

4.10 S7 TESTING 4 SETPOI N T S

MESSAGE

PATH: SETPOINTS

MESSAGE

GROUND CURRENT:

0 A

VOLTAGE:

0 V

POWER:

0 kW

ttttttt

SIMULATION: OFF

Range: 0 to 65535 A; Step: 1

Enter the ground current for simulation of a ground fault. Set

CURRENT SIMULATION \ SIMULATION:

Range: 0 to 65535 V; Step: 1

Range: 0 to 65535 kW; Step: 1

S7: TESTING

Range: ON, OFF

Enter ON to switch from actual analog output to the programmed simulation value. Set this setpoi nt to a safeguard, simulation will automatically turn off if:

• power to the MM3 is turned off and on

• time programmed in

When analog output si mulation is turn ed on the following flash message will be displayed for 3 seconds.

ttt t

ANALOG OUTPUT SIMULATION

LATION ENABLED FOR

CURRENT SIMULATION HAS BEEN ENABLED

S7: TESTING \

to see the effect of this current.

4.10.5 ANALOG OUTPUT SIMULATION

OFF

after simulation is comple te. As

S7: TESTING \ ANALOG OUTPUT SIMULATION \ SIMU-

has elapsed since simulation was first enabled

MESSAGE

SIMULATION ENABLED FOR: 15 min

ANALOG OUTPUT FORCED TO: OFF %

When analog output s imulation is turned off the following fl ash messag e will be displayed for 3 seconds.

CURRENT SIMULATION HAS BEEN DISABLED

Range: 5 to 300 min. or UNLIMITED; Step: 5 min.

Select the desired leng th of time that simulation will be enabled. When the programmed time has elapsed, analog outpu t simulat ion will turn off. If UNLIMITED is selected, simulated analog output will be used until simulation is turned off via the

SIMULATION ON/OFF

setpoint or via the

serial port or until control power is removed from the MM3.

Range: 0 to 100% or OFF; Step: 1

Enter in percent th e analog output value to be simul ated. For example, altering the setpoints below:

S7: TESTING\ANALOG OUTPUT SIMULATION\ANALOG OUTPUT FORCED TO: S7: TESTING\ANALOG OUTPUT SIMULATION\SIMULATION:

50.0%

The output current level will be 12mA.

4-42 MM3 Motor Manager 3 GE Power Management

Page 73

4 SETPOINTS 4.10 S7 TESTING

4.10.6 ANALOG INPUT SIMULATION

PATH: SETPOINTS

SIMULATION:

MESSAGE

OFF

SIMULATION ENABLED FOR: 15 min

ANALOG INPUT

OFF mA

ttttttt

S7 TESTING

Range: ON, OFF

Enter ON to switch from an actual analog input to the programmed simulated value. Set this setpoint OFF after simulation is complete.

Range: 5 to 300 min. or UNLIMITED; Step: 5 min.

Select the desired leng th of time that simulation will be enabled. When the programmed time has elaps ed , ana log input simulation will turn off. If unlimited is selected, the simulated analog input will be used until simulation is turned off via the simulation on/off message or via the serial port or until control power is removed.

Range: 4.0 to 20.0 mA or OFF; Step: 1 mA

Enter an analog input current in the range of 4 to 20 mA to be simulated.

ttttt

ANALOG INPUT SIMULATION

GE Power Management MM3 Motor Manager 3 4-43

Page 74

4.10 S7 TESTING 4 SETPOI N T S

4.10.7 SWITCH INPUTS SIMULATION

PATH: SETPOINTS

MESSAGE

ttttttt

S7 TESTING

SIMULATION: OFF

SIMULATION ENABLED FOR: 15 min

tttttt

SWITCH INPUTS SIMULATION

Range: ON, OFF

Enter ON to switch from actual switch inputs to the programmed simulation status of eac h switch input. While simulati on is on the actual switch input status will be overridden by the simulated status of each input. Set this setpoint to

OFF

after simulation is complete. As a

safeguard, simulation will automatically turn off if:

• power to the MM3 is turned off and on

• the time progr ammed in

ULATION ENABLED FOR

S7: TESTING\SWITCH INPUTS SIMULATION\SIM-

has elapsed since simulation was first enabled

When switch inp uts simulation is turned on the following flash me ssage will be displayed for 3 seconds.

CURRENT SIMULATION HAS BEEN ENABLED

When switch inpu ts is tur ned off the follow ing flash mes sage will be displayed for 3 seconds.

CURRENT SIMULATION HAS BEEN DISABLED

Range: 5 to 300 min. or UNLIMITED; Step: 5

Select the length of time that simulation is enabled. When t his time has elapsed, switch inputs simulation will turn off. If

UNLIMITED

is selected, simulated switch input status will be used until simulation is turned off via the

SIMULATION ON/OFF

setpoint, via the se rial port, o r until cont rol power

is removed.

MESSAGE

START A INPUT: OPEN

START B INPUT: OPEN

STOP INPUT: OPEN

CONTACTOR A STATUS INPUT:OPEN

CONTACTOR B STATUS INPUT: OPEN

LOCAL ISOLATOR INPUT: OPEN

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

. The functionality

4-44 MM3 Motor Manager 3 GE Power Management

Page 75

4 SETPOINTS 4.10 S7 TESTING

MESSAGE

INTERLOCK 1 INPUT: OPEN

INTERLOCK 2 INPUT: OPEN

INTERLOCK 3 INPUT: OPEN

INTERLOCK 4 INPUT: OPEN

INTERLOCK 5 INPUT: OPEN

INTERLOCK 6 INPUT: OPEN

INTERLOCK 7 INPUT: OPEN

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

. The functionality

MESSAGE

INTERLOCK 8 INPUT: OPEN

INTERLOCK 9 INPUT: OPEN

INTERLOCK 10 INPUT: OPEN

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

Range: OPEN, CLOSED

Enter the status of this switc h input as

OPEN

CLOSED

of this input remains as is with actual input connected.

. The functionality

GE Power Management MM3 Motor Manager 3 4-45

Page 76

4.10 S7 TESTING 4 SETPOI N T S

4.10.8 THERMISTOR SIMULATION

PATH: SETPOINTS

MESSAGE

ttttttt

S7 TESTING

SIMULATION: OFF

SIMULATION ENABLED FOR: 15 min

ttttttt

THERMISTOR SIMULATION

Range: ON, OFF

Enter ON to switch from actual thermistor input to the programmed simulation thermis tor resistance va lue. While simulati on is on the actual thermistor input wi ll be ov er rid den by t he si mul ate d re si sta nc e v al ue. Se t

OFF

after simulation is complete. As a safeguard, simulation will

automatically turn off if:

• power to the MM3 is turned off and on

• time programmed in

TION ENABLED FOR

S7: TESTING \ THERMISTOR SIMULATION \ SIMULA-

has elapsed since simulation was first enabled

When thermistor simulat ion is t urned on the following flash m essage wi ll be displayed for 3 seconds.

CURRENT SIMULATION HAS BEEN ENABLED

When thermist or simula tion is turned off th e following flash me ssage wi ll be displayed for 3 seconds.

CURRENT SIMULATION HAS BEEN DISABLED

Range: 5 to 300 min. or UNLIMITED; Step: 5 min.

Select the desired leng th of time that simulation will be enabled. When the programmed ti me has elapsed, thermistor simulation will turn off. If UNLIMITED is selected, simulated thermistor input will be used until simulation is turned off via the

SIMULATION ON/OFF

setpoint or via the

serial port or until control power is removed from the MM3.

MESSAGE

THERMISTOR RESISTANCE: 0

Range: 0 to 30000 Ω; Step: 1

Enter the value of the thermistor resistance to be simulated. The functionality of the thermistor remains as is with an actual input connected to the MM3.

4-46 MM3 Motor Manager 3 GE Power Management

Page 77

5 ACTUAL VALUES 5.1 OVERVIEW

5 ACTUAL VALUES 5.1 OVERVIEW 5.1.1 DESCRIPTION

All actual values messages are listed and explained in this chapter. Messages are organized into logical groups of pages. Each page contains sections of related messages. The actual values menu has 4 pages containing the following information:

Table 5–1: ACTUAL VALUES PAGES

PAGE CONTENTS

1Data 2Status 3 Inputs 4Statistics

This chapter shows the actual messages displayed on the front panel of the MM3. Quantities shown are typical values only. Different quantities will be displayed in each particular application.

MESSAGE

ACTUAL

NOTE

When finished vie wing a message in a particul ar section, press to view th e next line. When the last line of a se ction is reached, press to view the next section in the page.

MESSAGE

When the last line of the last section within a page is reached, press to select the next page.

5.1.2 DEFAULT MESSAGE SELECTION

Up to 5 default messag es can be s elec ted to s can se quentiall y when the motor is run ning an d the MM3 is le ft unattended. If no keys are pressed f or 2 minutes and th e motor is runn ing, then the cu rrently dis played message will automatica lly b e over written by the first de fault m essag e. Afte r 3 seco nds, t he nex t defaul t mess age in the sequence wil l display if mor e than one is sele cted. Alarm an d trip messages over ride the default me ssage display. Any actual value or setpoint can be selected as a default message. For example, the MM3 could be programmed to display thes e messages in sequence: three- phase current, ground current, mo tor status, motor current as a percentage of full load, and analog input.

Messages are displaye d in the order they are s elected. To add a defa ult message, use the me ssage keys to display any actual valu es or setpoints message to be add ed to the default queu e. Press the key twice

STORE

in rapid succession. The display will prompt:

TO ADD THIS DEFAULT MESSAGE PRESS STORE

Press again. The display confirms that the default message has been added. If 5 default messages are

STORE

already selected, the first message is erased and the new message added to the end of the queue. To delete a default message, wa it for 2 min utes and note the messages that are displa yed in seq uence. Use

the message keys to display the default message to be erased. Press then in rapid succession.

STORE

RESET

The display prompts:

TO DELETE THIS MESSAGE PRESS STORE

Press the key. The display confirms that the default message has been deleted. If the message was not

STORE

a current default message, the display will read:

NOT A SELECTED DEFAULT MESSAGE

GE Power Management MM3 Motor Manager 3 5-1

Page 78

5.1 OVERVIEW 5 ACTUAL VALUES

5.1.3 ACTUAL VALUES MESSAGE ABBREVIATIONS

The following abbreviations are used in the Actual Values messages.

• A, AMPS: Amperes

• kW: Kilowatts

• kWhr: Kilowatt hours

• MIN: Minutes

• N/O: Normally Open

• O/L: Overload

• s: Seconds

5.1.4 ACTUAL VALUES MESSAGE SUMMAR Y

]] ACTUAL VALUES ]] A1: DATA

] MOTOR DATA ]

] PROCESS DATA ]

] PROGRAMMABLE ] MESSAGE

]] ACTUAL VALUES ]] A2: STATUS

] TRIP DATA ]

] ALARM DATA ]

] MOTOR STATUS ]

]] ACTUAL VALUES ]] A3: INPUTS

] INPUT CONTACTS ] STATUS

Figure 5–1: ACTUAL VALUES MESSAGES

]] ACTUAL VALUES ]] A4: STATISTICS

] TIMERS ]

] COUNTERS ]

5-2 MM3 Motor Manager 3 GE Power Management

Page 79

5 ACTUAL VALUES 5.2 ACTUAL VALUES MESSAGES

STOP

5.2 ACTUAL VALUES MESSAGES5.3 A1 DATA 5.3.1 DESCRIPTION

]] ACTUAL VALUES ]] A1: DATA

This page contains the real-time data as measured by the MM3. Actual Values Page 1 is divided into three sections: MOTOR DATA, PROCESS DATA, and PROGRAMMABLE MESSAGE.

]] ACTUAL VALUES ]] A1: DATA

MESSAGE

] MOTOR DATA ]

] PROCESS DATA ]

] PROGRAMMABLE

MESSAGE

PATH: ACTUAL VALUES t A1: DATA t MOTOR DATA

MOTOR

MESSAGE

STATUS:

] MESSAGE

This message indicates the name and status of the motor. The top line of the display (20 characters) can be programmed to a user defined alphanumeric name. The second line indicates motor status. The following list shows the possible motor status indications:

•

Unavailable

start commands from operating. Possible conditions are: a trip is present, the key is being press ed, the Stop Switch input is open, one of the Process Interlock switches is open, an undervoltage delayed restart is in p rogress, an Autotransformer Sta rt Inhibit is in progress, or the

•

Available-Auto

A / Auto Start B interlock switch inputs will be performe d. Start commands from the Start A / Start B switch inputs and the /

STARTB

•

Available-Manual

inputs and/or the / keys will b e perfor med. St art commands from the serial port and Auto Start A / Auto Start B switch inputs will be ignored.

•

Running

5.3.2 MOTOR DATA

: There is at least one condition present that is preventing

STARTER TYPE

setpoint is

OFF

: Start commands from the serial port or the Auto Start

keys will be ignored.

: Start commands from the Start A / Start B switc h

STARTA STARTB

: At least one contactor output relay is closed.

STARTA

MESSAGE

A= 74 B= 74 C= 74 AMPS

This message displays the actual RMS current in each phase in amps.

Format: 10.0 at CT Primary ≤ 50 A

100 at CT Primary > 50 A.

MESSAGE

GROUND CURRENT =

2.4 AMPS MOTOR LOAD =

74% FULL LOAD

This message displays the ground fault lea kage curr ent flowi ng from any phase to ground in amps.

This message displays the motor load as a percentage of full load current (FLC). The motor load is calculated as the average of the three motor phase currents . When the value exceeds 100%, an ov erload condition exists. The MM3 eventually trips if the current is not reduced below 100% of FLC × SERVICE FACTOR.

GE Power Management MM3 Motor Manager 3 5-3

Page 80

5.3 A1 DATA 5 ACTUAL VALUES

MESSAGE

THERMAL CAPACITY USED = 21 %

PHASE CURRENT UNBALANCE = 1 %

ACCELERATION TIME =

0.0 s

LAST STARTING CURRENT = 340 AMPS

O/L TIME TO TRIP =

---- s

POWER = +1000 kW

ENERGY USED =

10600 kWhr

This message displays the thermal memory accumulated according to

I2t

motor

history and chosen overload curve. A thermal capacity value

equal to 100% causes an Overload Trip. Displays the percentage unbalance in the motor phase currents. The

unbalance is calculated as shown in Section 1.2.1: MM3 SPECIFICATIONS on page 1–4.

This message di splays the motor acceler ation time from the last m otor start. This value is determined by the amount of time required fo r the average phase current to go below 1.0

FULL LOAD CURRENT

after a

motor start. This message displays the maximum curr ent measured during the las t

motor start. This value is saved until the next start or until power is cycled on the MM3.

This message d isplays the estimated tim e to trip based on the pre sent overload level and therma l capacity used. Thi s message is only used in conjunction with overload trips.

This message d ispl ays t he three phase pow er, calculated usin g ph ase A

current and v oltage

PRIMARY VOLTAGE

setpoint is programmed.

. This message will appear only if the

This message displays the total accumulated energy used since last cleared. This value is updated once every minute. This message will appear only if the

VT PRIMARY VOLTAGE

setpoint is programmed.

MESSAGE

VT VOLTAGE =

480 V

This message displ ays t he voltage pres ent at the prima ry of the V T. This message will appear only if the programmed.

PATH: ACTUAL VALUES t A1 DATA tt PROCESS DATA

This message displays the 4 to 20 mA analog input value scaled to the minimum and maximum values as specified in setpoints. The analog

MESSAGE

ANALOG INPUT = 142 UNITS

input name and units are user-definable in the setpoints area.

PATH: ACTUAL VALUES t A1 DATA

PROGRAMMABLE MESSAGE

MESSAGE

SAMPLE TEXT

PROGRAMMABLE MESSAGE

ttt

This message contains 40 characters of user programmable text. The text can be entered in

PROGRAMMABLE MESSAGE

VT PRIMARY VOLTAGE

setpoint is

5.3.3 PROCESS DATA

5.3.4 PROGRAMMABLE MESSAGE

S1 CONFIGURATION \ PROGRAMMABLE MESSAGE \

5-4 MM3 Motor Manager 3 GE Power Management

Page 81

5 ACTUAL VALUES 5.4 A2 STATUS

5.4 A2 STATUS 5.4.1 DESCRIPTION

]] ACTUAL VALUES ]] A2 STATUS

This page contains MM3 status information following an alarm and/or trip. Information such as cause of alarm/ trip and the motor values pr ior to a trip are include d. The page also contai ns a section descr ibing the control status of the motor. Actual Values Page 2 is divided into three sections: TRIP DATA, ALARM DATA, and MOTOR STATUS.

]] ACTUAL VALUES ]] A2 STATUS

MESSAGE

] TRIP DATA ]

] ALARM DATA ]

] MOTOR STATUS

MESSAGE

PATH: ACTUAL VALUES tt A2 STATUS t TRIP DATA

CAUSE OF TRIP:

MESSAGE

NO TRIP

]

This message displ ays the cause o f the current trip. I f no trip is pres ent, the display indicates NO TRIP. When a trip occurs, the cause of trip message will override the currently selected default message. The possible causes of trip are:

OVERLOAD GROUND FAULT SINGLE PHASE THERMISTOR ACCELERATION TIME STALLED ROTOR PLANT INTERLOCK LOCAL ISOLATOR UNDERCURRENT UNDERPOWER SERIAL LINK FAIL INTERNAL FAULT ANALOG INPUT LOW ANALOG INPUT HIGH EMERGENCY STOP PROCESS INTERLOCK A-J PROCESS STOP FACEPLATE STOP OPEN CONTROL CIRCUIT UNDER VOLTAGE OVERVOLTAGE PARAMETERS NOT SET

5.4.2 TRIP DATA

MESSAGE

CAUSE OF LAST TRIP: PARAMETER NOT SET

TIME TO RESET =

10 MINUTES

This message displays the last trip to take place. It is used as a reference for the pretrip phase and ground currents.

This message is visible o nly when an Overload Trip is present. The time left before the Overload Trip can be reset is displayed. Note that the Lockout Reset Interlock feature can be used to override this time.

MESSAGE

PRETRIP A = 238 B = 74 C = 74

PRETRIP GROUND CURRENT = 2.4 AMPS

Pretrip values for current related trips are stored in the EEPROM at the time of trip

This message di splays the motor phase curr ent that was flowing at the time of trip.

This message displ ays the gr ound le akage cur rent that wa s flowi ng fro m any phase to ground at the time of trip.

. This

enables the MM3 to “remember” pretr ip values if power is remov ed. This featu re is enabl ed for over-

NOTE

load, single-phase, undercu rren t, underpow er, acceleration time, sta lled roto r, and ground fault trips . When a trip not listed above occurs and power is removed, the MM3 displays zero for pretrip values.

GE Power Management MM3 Motor Manager 3 5-5

Page 82

5.4 A2 STATUS 5 ACTUAL VALUES

5.4.3 ALARM DATA

PATH: ACTUAL VALUES tt A2 STATUS tt ALARM DATA

Any alarm conditions that are currently active will be displayed. This could be one or more of the following:

MESSAGE

NO ACTIVE ALARMS

LOAD INCREASE ALARM

INTERNAL FAULT ALARM

PHASE UNBALANCE ALARM

THERMISTOR ALARM

UNDERPOWER ALARM

UNDERCURRENT ALARM

ACCELERATION TIME ALARM

GROUND FAULT ALARM

This message is displayed only when there are no alarms currently active. If at least one alarm has occurred, the most recent alarm message will override the currently selected default message and this message will not be displayed.

Load Increase Alarm Level has been exceeded.

Self-test checking detected an internal hardware fault.

Phase current u nbalance of great er than 15% has existed for m ore tha n 5 seconds.

The Thermistor Hot resistance has been exceeded.

The power has dropped below the Underpower Alarm Level for the Underpower Alarm time delay.

The average phase curre nt has dropped below the Undercurrent Al arm Level for the Undercurrent Alarm Time Delay.

The measured motor acceleration time has exceeded the Acceleration Time Alarm Level.

The ground current has exceeded Ground Fault Alarm Level for the Ground Fault Alarm Time Delay.

MESSAGE

OPEN CONTROL CIRCUIT

WELDED CONTACTOR

INVERTER TRIPPED

DRIVE FAILED TO START

DRIVE FAILED TO STOP

INCOMPELTE START

UNDERPOWER ALARM

While performing a start, the MM3 did not see a change in contactor status (open to closed) within 1 sec. of energizing the output relay.

While performing a stop, the MM3 did not see a change in contactor status (closed to open) within 1 sec. of de-energizing the output relay.

An inverter trip has been detected by the MM3. This occurs on an inverter starter when Contact or B opens and Contactor A stays closed with no stop command processed by the MM3.

An Inverter starte r has failed to complete a st art sequence. This occu rs on an inverter starter wh en, during a s tart sequence, Co ntactor A c loses as expected but Contactor B fails to close.

An Inverter starte r has failed to complete its s top sequence . This occu rs on an inverter starter when Contactor B fails to open during a stop sequence.

An Autotransformer starter has failed to complete its start sequence. This occurs on an aut otransformer starter start sequen ce when Contactor A closes as expected but Contactor B fails to close.

The power has dropped below the Underpower Alarm Level for the Underpower Alarm time delay.

5-6 MM3 Motor Manager 3 GE Power Management

Page 83

5 ACTUAL VALUES 5.4 A2 STATUS

MESSAGE

MOTOR GREASING INTERVAL EXCEEDED

CONTACT INSPECTION INTERVAL EXCEEDED

MAXIMUM MOTOR STOP TIME EXCEEDED

ANALOG HIGH ALARM

ANALOG LOW ALARM

PROCESS INTERLOCK A ALARM

PROCESS INTERLOCK B ALARM

PROCESS INTERLOCK C ALARM

PROCESS INTERLOCK D ALARM

PROCESS INTERLOCK E ALARM

The Motor Greasing Interval time has been exceeded.

The number of contactor operations has exceeded the Contactor Inspection Interval Alarm count.

The time that the motor has remained stopped has exceeded the Maximum Motor Stopped Time alarm level. This can be cleared by starting the motor.

The Analog Input value has exceeded the Analog Input High Alarm Level for the Analog Input High Alarm Time Delay.

The Analog Input va lue has dropped bel ow the Analog Input Low Alarm Level for the Analog Input Low Alarm Time Delay.

An open Process Interlock A switch input has been detected.

An open Process Interlock B switch input has been detected.

An open Process Interlock C switch input has been detected.

An open Process Interlock D switch input has been detected.

An open Process Interlock E switch input has been detected.

MESSAGE

PROCESS INTERLOCK F ALARM

PROCESS INTERLOCK G ALARM

PROCESS INTERLOCK H ALARM

PROCESS INTERLOCK I ALARM

PROCESS INTERLOCK J ALARM

MOTOR A TRIP ALARM = OVERLOAD

THERMAL CAPACITY ALARM

UNDERVOLTAGE ALARM

OVERVOLTAGE ALARM

START BLOCK ALARM

An open Process Interlock F switch input has been detected.

An open Process Interlock G switch input has been detected.

An open Process Interlock H switch input has been detected.

An open Process Interlock I switch input has been detected.

An open Process Interlock J switch input has been detected.

A Duty/Standby star ter type motor has tripped. The cause of the tr ip is displayed on the bottom line.

The thermal capacity used has exceeded the Alarm level.

The primary voltage measurement has dropped below the Alarm level.

The primary voltage measurement has exceeded the Alarm level.

A Start Block is in effect.

GE Power Management MM3 Motor Manager 3 5-7

Page 84

5.4 A2 STATUS 5 ACTUAL VALUES

5.4.4 MOTOR STATUS

PATH: ACTUAL VALUES tt A2: STATUS

MOTOR STATUS:

MESSAGE

RUNNING DELAYED RESTART IN

PROGRESS: 15 s

DELAYED START IN PROGRESS: 15 s

TRANSFER TIME IN PROGRESS: 10 s

RESTART INHIBIT

25 s

EXTERNAL START

MOTOR STATUS

ttt

This message has the same possible values as the Motor Status message in page

A1: DATA \ MOTOR DATA

This message will appear if a delayed undervoltage restart is in progress. The displayed ti me indicate s the time r emaining unt il the start sequence will begin.

This message w ill appear if a delay ed start is i n progress . This occu rs if one of the auxilia ry relay s is set to Pre Contac tor A OR B oper ation. Th e displayed time indicates the time remaining until contactor A energizes.

This message will appear if a high speed to low speed transition is occurring on a Two Speed starter or if a di rect ion chan ge is occu rring o n Reversing starte r. The displayed tim e indi cates either th e time r emai ning until the low speed o utput relay (Contactor A) wi ll energize, or the time remaining until the forward output relay (Contactor A) or the reverse output relay (Contactor B) will energize.

This message will appear when an autotransformer start is inhibited. The restart inhibit time is determined from the autotransformer starts per hour setpoint.

This message wi ll a ppea r if the co nta cto r cl os ed with out r ece iv in g a s tar t command from the MM3. The MM3 will close the corresponding outpu t relay to seal in the contactor.

MESSAGE

CAUSE OF STOP

CAUSE OF LAST STOP

EXTERNAL STOP

This message will appear to indicate the cause of the current stop condition.

This message indicates the cause of the last stop operation.

This message i ndic ates that t he st op op eration was caus ed e xternal ly t o the MM3. i.e. The contactor coil de-energized

5-8 MM3 Motor Manager 3 GE Power Management

Page 85

5 ACTUAL VALUES 5.5 A3 INPUTS

5.5 A3 INPUTS 5.5.1 DESCRIPTION

]] ACTUAL VALUES ]] A3 INPUTS

This page contain s information on the 16 switc h inputs. Actual Values Page 3 contains one se ction, INPUT CONTACTS STATUS.

]] ACTUAL VALUES ]] A3 INPUTS

PATH: ACTUAL VALUES

START A INPUT:

MESSAGE

OPEN

START B INPUT: OPEN

STOP INPUT: OPEN

CONTACTOR A N/O: OPEN

CONTACTOR B N/O: OPEN

MESSAGE

] INPUT CONTACTS ] STATUS

A3 INPUTS t INPUT CONTACTS STATUS

ttt

Start A switch input status.

CLOSED OPEN

: Start A switch closed

: Start A switch open

Start B switch input status.

CLOSED OPEN

: Start B switch closed

: Start B switch open

Stop switch input status.

CLOSED OPEN

: Stop switch closed

: Stop switch open

Contactor A N/O switch input status.

CLOSED OPEN

: Contactor A N/O switch closed

: Contactor A N/O switch open

Contactor B N/O switch input status.

CLOSED OPEN

: Contactor B N/O switch closed

: Contactor B N/O switch open

5.5.2 INPUT CONTACTS STATUS

MESSAGE

LOCAL ISOLATOR N/O: OPEN

INTERLOCK 1: OPEN NOT USED

Local Isolator switch input status.

CLOSED OPEN

: Local Isolator switch closed

: Local Isolator switch open

Interlock 1 switch input status.

CLOSED OPEN

: Interlock 1 switch closed

: Interlock 1 switch open

This message also shows the function, if any, assigned to Interlock 1

MESSAGE

INTERLOCK 2: OPEN NOT USED

Interlock 2 switch input status.

CLOSED OPEN

: Interlock 2 switch closed

: Interlock 2 switch open

This message also shows the function, if any, assigned to Interlock 2

MESSAGE

INTERLOCK 3: OPEN NOT USED

Interlock 3 switch input status.

CLOSED OPEN

: Interlock 3 switch closed

: Interlock 3 switch open

This message also shows the function, if any, assigned to Interlock 3

GE Power Management MM3 Motor Manager 3 5-9

Page 86

5.5 A3 INPUTS 5 ACTUAL VALUES

MESSAGE

INTERLOCK 4: OPEN NOT USED

INTERLOCK 5: OPEN NOT USED

INTERLOCK 6: OPEN NOT USED

INTERLOCK 7: OPEN NOT USED

INTERLOCK 8: OPEN NOT USED

Interlock 4 switch input status.

CLOSED OPEN

: Interlock 4 switch closed

: Interlock 4 switch open

This message also shows the function, if any, assigned to Interlock 4 Interlock 5 switch input status.

CLOSED OPEN

: Interlock 5 switch closed

: Interlock 5 switch open

This message also shows the function, if any, assigned to Interlock 5 Interlock 6 switch input status.

CLOSED OPEN

: Interlock 6 switch closed

: Interlock 6 switch open

This message also shows the function, if any, assigned to Interlock 6 Interlock 7 switch input status.

CLOSED OPEN

: Interlock 7 switch closed

: Interlock 7 switch open

This message also shows the function, if any, assigned to Interlock 7 Interlock 8 switch input status.

CLOSED OPEN

: Interlock 8 switch closed

: Interlock 8 switch open

This message also shows the function, if any, assigned to Interlock 8

MESSAGE

INTERLOCK 9: OPEN NOT USED

INTERLOCK 10: OPEN NOT USED

Interlock 9 switch input status.

CLOSED OPEN

: Interlock 9 switch closed

: Interlock 9 switch open

This message also shows the function, if any, assigned to Interlock 9 Interlock 10 switch input status.

CLOSED OPEN

: Interlock 10 switch closed

: Interlock 10 switch open

This message also shows the function, if any, assigned to Interlock 10

5-10 MM3 Motor Manager 3 GE Power Management

Page 87

5 ACTUAL VALUES 5.6 A4 STATISTICS

5.6 A4 STATISTICS 5.6.1 DESCRIPTION

]] ACTUAL VALUES ]] A4 STATISTICS

This page gives detailed information on the running time and accumulated nu mber of various types of trips. Actual Values Page 4 is divided into two sections, TIMERS and COUNTERS.

]] ACTUAL VALUES ]] A4 STATISTICS

PATH: ACTUAL VALUES

RUNNING TIME =

MESSAGE

2338 HOURS

STOPPED TIME =

2 HOURS

ttt t

MESSAGE

] TIMERS ]

] COUNTERS

MESSAGE

A4 STATI STICS t TIMERS

]

This is the total accumulated time the motor has been running. Whenever Contactor A and/o r Contactor B is closed the motor is considered to be running.

This is the non-a ccumulated motor stopped ti me. This is the amount of time that the moto r has been st opped since the last time it was running . This value will clear to zero the next time the motor is started.

5.6.2 TIMERS

GE Power Management MM3 Motor Manager 3 5-11

Page 88

5.6 A4 STATISTICS 5 ACTUAL VALUES

5.6.3 COUNTERS

PATH: ACTUAL VALUES

MESSAGE

tttt

A4 STATISTICS

INTERLOCK COUNTER = 34765 UNITS

NUMBER OF STARTS = 26

TOTAL TRIPS =

OVERLOAD TRIPS =

THERMISTOR TRIPS =

GROUND FAULT TRIPS =

SINGLE PHASE TRIPS =

ACCELERATION TRIPS =

UNDERCURRENT TRIPS =

COUNTERS

This is the total number of switch closures read by the MM3 on a programmable input that has been configured to

INTERLOCK COUNTER

This is the total number of contactor operations. When the MM3 receives feedback into either contactor status input to confirm that one of the main contactors have closed, this counter will increment.

When the MM3 trips for any reason, this valu e is incremented. It is the sum of all of the individual causes of trip.

When an overload trip occurs, this value is incremented.

When a thermistor trip occurs, this value is incremented.

When a ground fault trip occurs, this value is incremented.

When a single phase trip occurs, this value is incremented.

When an undercurrent trip occurs, this value is incremented.

MESSAGE

UNDERPOWER TRIPS:

STALLED ROTOR TRIPS:

CONTROL COMMAND TRIPS: 3

When an underpower trip occurs, this value is incremented.

If a stalled rotor trip occurs, this value is incremented.

If a control trip occurs, this value is incremented (i.e. Plant Interlock, Local Isolator etc.)

5-12 MM3 Motor Manager 3 GE Power Management

Page 89

6 COMMUNICATIONS 6.1 MM3 MODBUS PROTOCOL

6 COMMUNICATIONS 6.1 MM3 MODBUS PROTOCOL 6.1.1 OVERVIEW

The MM3 implements a subset of the Modicon Modbus RTU serial communication standard. The Modbus protocol is hardware-independent. That is, the physical layer can be any of a variety of standard hardware configurations. This includes RS232, RS422, RS485, fibre optics, etc. Modbus is a single master / multiple slave type of protocol suitable for a multi-drop configu ration as provided b y RS485 hardware. The MM 3 Modbus implementation employs two-wire RS485 hardware. Using RS485, up to 32 MM3s can be daisy-chained together on a single communication channel.

The MM3 is always a Modbu s slave. They can not be progr ammed as Mod bus masters. Com puters or PLCs are commonly programmed as masters.

Modbus protocol exists in two v ers ion s: R emo te Terminal Unit (RTU, binary) and ASCII. Only the RTU versio n is supported by the MM3.

Both monitoring and co ntrol are pos sible using r ead and write r egister c ommands. Oth er comman ds are supported to provide additional functions.

6.1.2 ELECTRICAL INTERFACE

The hardware or el ectrical i nterface in the MM3 is two-wi re RS48 5. In a tw o-wire li nk, data is transmi tted and received over the same two wi r es. Alt houg h RS 485 two wire c omm uni ca tio n is bi- dir ec tion al , the da ta is never transmitted and received at the same time. This means that the data flow is half duplex.

RS485 lines sho uld be connected in a d aisy chain configurati on with terminating net works installed at each end of the link (i. e. at the master end and at the slav e farthest from the master). The term inating network should consist of a 120Ω resistor in series with a 1 nF ceramic capacitor when used with Belden 9841 RS485 wire. Shielded w ire should always be used to minimize noise. The s hield should be connected to all of the MM3s as well as the m aster, then grounded at o ne loc ation onl y. This keeps the ground pot ential at the s ame level for all of the devices on the serial link.

Polarity is important in RS485 communications. The '+' (positive) terminals of every device must be connected together.

NOTE

See Figure 2–4: RS485 TERMINATION on page 2–5 and Chapter 2: INSTALLATION for more information.

6.1.3 DATA FRAME FORMAT AND DATA RATE

One data frame of an async hr on ous transmission to or from a MM3 typically co nsis ts of 1 s ta rt b it, 8 da ta bi ts , and 1 stop bit. This produces a 10 bit data frame. This is important for transmission through modems at high bit rates (11 bit data frames are not suppo rted by Hayes modem s at b it rates of gr eater th an 300 bps) . The MM 3 has the capability of adding an odd or even parity bit if necessary.

Modbus protocol can be imp lemen ted at an y stan dard commu nicati on sp eed. T he MM3 supports oper ation a t 1200, 2400, 4800, 9600, 19200, and 57600 baud.

GE Power Management MM3 Motor Manager 3 6-1

Page 90

6.1 MM3 MODBUS PROTOCOL 6 COMMUNICATIONS

6.1.4 DATA PACKET FORMAT

A complete request/response sequence consists of the following bytes (transmitted as separate data frames):

Master Request Transmission:

SLAVE ADDRESS: 1 byte FUNCTION CODE: 1 byte DATA: variable number of bytes depending on FUNCTION CODE CRC: 2 bytes

Slave Response Transmission:

SLAVE ADDRESS: 1 byte FUNCTION CODE: 1 byte DATA: variable number of bytes depending on FUNCTION CODE CRC: 2 bytes

SLA VE ADDRESS: This is the first byte of every transmission. This byte represents the user-assigned address of the slave devic e that is to recei ve the me ssage s ent by t he master. Each slave de vice mu st be assigned a unique address and on ly the addressed s lave will resp ond to a transmiss ion that starts with i ts address. In a master request transmission the SLAVE ADDRESS represents the address of the slave to which the request is being sent. In a slave response transmission the SLAVE ADDRESS represents the address of the slave that is sending the response. Note: A m aster transmi ssion with a SLAVE ADDRESS of 0 indicates a broadcast c ommand. Broadcast comm and s can be used only in certain situ ati ons ; se e Se ct ion 6 .4: A PP LICATIONS on page 6–13 for details.

FUNCTION CODE: This is the second byte of every trans mi ssion. M odb us defines fun ct ion co des of 1 t o 127 . The MM3 implements some of these functions. See Section 6.2: MM3 SUPPORTED FUNCTIONS on page 6– 4 details of the s upported function codes. In a master request tra nsmission the FUNCTION C ODE tells the

slave what action to perform. In a slave respons e transmission the FUNCTION CODE tells the master what function was performed as requ ested. If the h igh orde r bit of th e FUNC TION CO DE se nt from th e slave is a 1 (i.e. if the FUNCTION CODE is > 127) then the slave did not perform the function as requested and is sending an error or exception response.

DATA: This will be a variable num ber of bytes d epending on the FUNCTION CODE . This may b e Actual Values, Setpoints, or address es sent by the master to the slav e or by the slave to the master. See Section 6.2: MM3 SUPPORTED FUNCTIONS for a description of the supported functions and the data required for each.

CRC: This is a two byte error checking code.

6.1.5 ERROR CHECKING

The RTU version of Modbus includes a two byte CRC-16 (16 bit cyclic redundancy check) with every transmission. The CRC-16 algorithm essentially treats the entire data stream (data bits only; start, stop and parity ignored) as one continuous binary number. This number is first shifted left 16 bits and then divided by a characteristic polynomial (11000000000000101B). T he 16 bit remai nder of the divisi on is app ended to th e end of the transmission, MSByte first. The resulting message including CRC, when divided by the same polynomial at the receiver will give a zero remainder if no transmission errors have occurred.

If a MM3 Modbus slave de vice receiv es a transm ission in whi ch an error is i ndicated by t he CRC-16 calcul ation, the slave device will not respond to the transmission. A CRC-16 error indicates than one or more bytes of the transmission were received incorrectly and thus the entire transmission should be ignored in order to avoid the MM3 performing any incorrect operation.

6-2 MM3 Motor Manager 3 GE Power Management

Page 91

6 COMMUNICATIONS 6.1 MM3 MODBUS PROTOCOL

The CRC-16 calculation is an industry standard method used for error detection. An algorithm is included here to assist programmers in situations where no standard CRC-16 calculation routines are available.

a) CRC-16 ALGORITHM

Once the following algorithm is complete, the working register "A" will contain the CRC value to be transmitted. Note that this algorithm requires the characteristic polynomial to be reverse bit ordered. The MSBit of the characteristic polynomia l is dropped si nce it does not affect the value of th e remainder. The following symbo ls are used in the algorithm:

• —>: data transfer

• A: 16 bit working register

• AL: low order byte of A

• AH: high order byte of A

• CRC: 16 bit CRC-16 value

• i, j: loop counters

• (+): logical exclusive or operator

• Di: i-th data byte (i = 0 to N-1)

• G: 16 bit characteristic polynomial = 1010000000000001 with MSbit dropped and bit order reversed

• shr(x): shift right (the LSbit of the low order byte of x shifts into a carry flag, a '0' is shifted into the MSbit of the high order byte of x, all other bits shift right one location

The algorithm is:

1. FFFF hex —> A

2. 0 —> i

3. 0 —> j

4. Di (+) AL —> AL

5. j+1 —> j

6. shr(A)

7. is there a carry? No: go to 8.

Yes: G (+) A —> A

8. is j = 8? No: go to 5.

Yes: go to 9.

9. i+1 —> i

10.is i = N? No: go to 3.

Yes: go to 11.

11.A —> CRC

6.1.6 TIMING

Data packet synchroni zatio n is m aintai ned by timin g constr aints . The re ceiv ing de vic e must measu re the time between the reception of characters. If 3.5 character times elapse without a new character or completion of the packet, then the communication link must be reset (i.e. all slaves start listening for a new transmission from the master). Thus at 9600 baud a dela y of gre ater than 3.5×1 / 9600×10×=×3.65×ms will cause the communication link to be reset.

GE Power Management MM3 Motor Manager 3 6-3

Page 92

6.2 MM3 SUPPORTED FUNCTIONS 6 COMMUNICATIONS

6.2 MM3 SUPPORTED FUNCTIONS 6.2.1 DESCRIPTION

The following functions are supported by the MM3:

• FUNCTION CODE 01 - Read Coil Status

• FUNCTION CODE 03 - Read Setpoints and Actual Values

• FUNCTION CODE 04 - Read Setpoints and Actual Values

• FUNCTION CODE 05 - Execute Operation

• FUNCTION CODE 06 - Store Single Setpoint

• FUNCTION CODE 07 - Read Device Status

• FUNCTION CODE 08 - Loopback Test

• FUNCTION CODE 10 - Store Multiple Setpoints

6.2.2 FUNCTION CODE 01H

Modbus implementation: Read Coil Status MM3 implementation: Read Last Command Operation

This function code allows the m aster to read back which comm and operatio n was last p erformed usin g Modbus function code 05: force singl e coil/execute operatio n. Upon request of coil/op eration status, the MM3 will set a bit corresponding to the last operation performed. The operation commands are in the Modbus Data Formats table under code F22.

Note: Operation 0 will be set (1) if no operations have been performed since the MM3 has been powered up. For example, a request slave 17 to respond with status of 6 operations, starting at operation 10, after perform-

ing command operation 13 (Manual Inhibit) has the following format:

Table 6–1: MASTER/SLAVE PACKET FORMAT FOR FUNCTION CODE 01H

MASTER TRANSMISSION BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 message for slave 17 FUNCTION CODE 1 01 read last command operation OPERATION STARTING ADDRESS 2 00 0A start at operation 10 NUMBER OF OPERATIONS TO READ 2 00 06 read 6 operations CRC 2 9E 9A CRC error code

SLAVE RESPONSE BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 mes sage from slave 17 FUNCTION CODE 1 01 read last command operation BYTE COUNT 1 01 6 operations = 6 bits: only 1 byte required DATA 1 (see definition below) 1 08 bit set corresponding to command 13 CRC 2 54 83 CRC error code

The DATA 1 definition is as follows:

Data 1 = 08 (hex) = command operation #

00001000

N/A N/A 15 14 13 12 11 10

6-4 MM3 Motor Manager 3 GE Power Management

Page 93

6 COMMUNICATIONS 6.2 MM3 SUPPORTED FUNCTIONS

6.2.3 FUNCTION CODE 03H

Modbus implementation: Read Holding Registers MM3 implementation: Read Setpoints and Actual Values

For the MM3 implementation of Modbus, this command can be used to read any setpoints ("holding registers") or actual values ("input registers"). Hol ding and input registers are 16 bit (two byte) val ues transmitted high order byte first. Thus all MM3 Setpoints and Actual Values are sent as two bytes. The maximum number of registers that can be read in one transmission is 125. This function code is identical to function code 04.

The slave response to this function code is the slave address , function code, a count of the number of data bytes to follow, the data itself and the CRC. Eac h data item is sent as a two byte numb er with the high order byte sent first.

For example, consider a request for slave 17 to respond with 3 register s starting at address 006B. For this example the register data in these addresses is as follows:

Address Data

006B 022B 006C 0000 006D 0064

The master/slave packets have the following format:

Table 6–2: MASTER/SLAVE PACKET FORMAT FOR FUNCTION CODE 03H

MASTER TRANSMISSION BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 message for slave 17 FUNCTION CODE 1 03 read registers DATA STARTING ADDRESS 2 00 6B data starting at 006B NUMBER OF SETPOINTS 2 00 03 3 registers = 6 bytes total CRC 2 76 87 CRC error code

SLAVE RESPONSE BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 mes sage from slave 17 FUNCTION CODE 1 03 read registers BYTE COUNT 1 06 3 registers = 6 bytes DATA 1 (see definition above) 2 02 2B value in address 006B DATA 2 (see definition above) 2 00 00 value in address 006C DATA 3 (see definition above) 2 00 64 value in address 006D CRC 2 54 83 CRC error code

GE Power Management MM3 Motor Manager 3 6-5

Page 94

6.2 MM3 SUPPORTED FUNCTIONS 6 COMMUNICATIONS

6.2.4 FUNCTION CODE 04H

Modbus Implementation: Read Input Registers MM3 implementation: Read Setpoints and Actual Values

The slave response to this func tion code is the slav e address, functi on code, a count of the data by tes to follow, the data itself and the CRC. Each data item is sent as a two byte number with the high order byte sent first.

For example, request sla ve 17 to respond wi th 1 regis ter star ting a t address 0008. F or this exa mple th e valu e in this register (0008) is 0000.

Table 6–3: MASTER/SLAVE PACKET FORMAT FOR FUNCTION CODE 04H

MASTER TRANSMISSION BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 message for slave 17 FUNCTION CODE 1 04 read registers DATA STARTING ADDRESS 2 00 08 data starting at 0008 NUMBER OF ACTUAL VALUES 2 00 01 1 register = 2 bytes CRC 2 B2 98 CRC error code

SLAVE RESPONSE BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 mes sage from slave 17 FUNCTION CODE 1 04 read registers BYTE COUNT 1 02 1 register = 2 bytes DATA (see definition above) 2 00 00 value in address 0008 CRC 2 78 F3 CRC error code

6-6 MM3 Motor Manager 3 GE Power Management

Page 95

6 COMMUNICATIONS 6.2 MM3 SUPPORTED FUNCTIONS

6.2.5 FUNCTION CODE 05H

Modbus Implementation: Force Single Coil MM3 Implementation: Execute Operation

This function cod e allows the master to req uest a MM3 to perform specif ic command operations. T he commands supported by the MM3 are listed in Section 6.4: APPLICATIONS on page 6–13.

For example, to request slave 17 to execute operation code 1 (reset), we have the following master/slave packet format:

Table 6–4: MASTER/SLAVE PACKET FORMAT FOR FUNCTION CODE 05H

MASTER TRANSMISSION BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 message for slave 17 FUNCTION CODE 1 05 execute operation OPERATION CODE 2 00 01 operation code 1 CODE VALUE 2 FF 00 perform function CRC 2 DF 6A CRC error code

SLAVE RESPONSE BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 mes sage from slave 17 FUNCTION CODE 1 05 execute operation OPERATION CODE 2 00 01 operation code 1 CODE VALUE 2 FF 00 perform function CRC 2 DF 6A CRC error code

The commands that can be performed by the M M3 us in g fu nction code 05 can als o be in iti ated by u sing function code 10.

See Section 6.2.9: FUNCTION CODE 10H on page 6–11 for an example of performing commands using function code 10.

GE Power Management MM3 Motor Manager 3 6-7

Page 96

6.2 MM3 SUPPORTED FUNCTIONS 6 COMMUNICATIONS

6.2.6 FUNCTION CODE 06H

Modbus Implementation: Preset Single Register MM3 Implementation: Store Single Setpoint

This command allows the m aster to st ore a single s etpoint in to the memor y of a MM3. Th e slave respon se to this function code is to echo the entire master transmission.

For example, request s lave 17 to s tore the val ue 01F4 in setpoi nt addr ess 1 020. Aft er the tran smis sion in this example is complete, se tpoints address 1020 wil l contain the value 01F4. The master/slave packet fo rmat is shown below:

Table 6–5: MASTER/SLAVE PACKET FORMAT FOR FUNCTION CODE 06H

MASTER TRANSMISSION BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 message for slave 17 FUNCTION CODE 1 06 store single setp oint DATA STARTING ADDRESS 2 10 20 setpoint address 1020 DATA 2 01 F4 data for setpoint address 1020 CRC 2 8E 47 CRC error code

SLAVE RESPONSE BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 mes sage from slave 17 FUNCTION CODE 1 06 store single setp oint DATA STARTING ADDRESS 2 10 20 setpoint address 1020 DATA 2 01 F4 data stored in setpoint address 1020 CRC 2 8E 47 CRC error code

6-8 MM3 Motor Manager 3 GE Power Management

Page 97

6 COMMUNICATIONS 6.2 MM3 SUPPORTED FUNCTIONS

6.2.7 FUNCTION CODE 07H

Modbus Implementation: Read Exception Status MM3 Implementation: Read Device Status

This is a function use d to q uic k ly re ad th e sta tus of a s el ect ed de vi ce . A s hor t m ess ag e le ngth all ows for r api d reading of status. The statu s by te retu rn ed wi ll have in div i dua l bi ts s et to 1 or 0 depen di ng on the s tatu s of th e slave device. For this example, consider the following MM3 general status byte:

LSBit:

MSBit:

B0: Alarm condition = 1 B1: Trip condition = 1 B2: Internal fault = 1 B3: Auto mode selected = 1 B4: Contactor A N/O (input closed = 1, open = 0) B5: Contactor B N/O (input closed = 1, open = 0) B6: AUX Relay 1 Status B7: AUX Relay 2 Status

The master/slave packets have the following format:

Table 6–6: MASTER/SLAVE PACKET FORMAT FOR FUNCTION CODE 07H

MASTER TRANSMISSION BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 message for slave 17 FUNCTION CODE 1 07 read device status CRC 2 4C 22 CRC error code

SLAVE RESPONSE BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 mes sage from slave 17 FUNCTION CODE 1 07 read device status DEVICE STATUS (see definition above) 1 2C status = 00101100 (in binary) CRC 2 22 28 CRC error code

GE Power Management MM3 Motor Manager 3 6-9

Page 98

6.2 MM3 SUPPORTED FUNCTIONS 6 COMMUNICATIONS

6.2.8 FUNCTION CODE 08H

Modbus Implementation: Loopback Test MM3 Implementation: Loopback Test

This function is used to test the integrity of the communication link. The MM3 will echo the request. For example, consider a loopback test from slave 17:

Table 6–7: MASTER/SLAVE PACKET FORMAT FOR FUNCTION CODE 08H

MASTER TRANSMISSION BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 message for slave 17 FUNCTION CODE 1 08 loopback test DIAG CODE 2 00 00 must be 00 00 DA TA 2 00 00 must be 00 00 CRC 2 E0 0B CRC error code

SLAVE RESPONSE BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 mes sage from slave 17 FUNCTION CODE 1 08 loopback test DIAG CODE 2 00 00 must be 00 00 DA TA 2 00 00 must be 00 00 CRC 2 E0 0B CRC error code

6-10 MM3 Motor Manager 3 GE Power Management

Page 99

6 COMMUNICATIONS 6.2 MM3 SUPPORTED FUNCTIONS

6.2.9 FUNCTION CODE 10H

Modbus Implementation: Preset Multiple Registers MM3 Implementation: Store Multiple Setpoints

This function code a llows mu ltipl e Setp oints to be sto red i nto the MM3 m emor y. Modbus "registers" are 16-bi t (two byte) values transmitted high order byte first. Thus all MM3 setpoints are sent as two bytes. The maximum number of Setpoints that can be stor ed in one transmis sion is depende nt on the slave dev ice. Modbus all ows up to a maximum of 60 ho lding re gisters to b e stored. Th e MM3 respon se to this function cod e is to ec ho the slave address, function code, starting address, the number of Setpoints stored, and the CRC.

For example, consider a re quest for slave 17 to store the value 01F4 to setpoint add ress 1028 and the value 2710 to setpoint address 10 29. A fter the transmission in this example is complete, MM3 sl ave 17 wil l ha ve the following setpoints information stored:

Address Data

1028 01F4 1029 2710

The master/slave packets have the following format:

Table 6–8: MASTER/SLAVE PACKET FORMAT FOR FUNCTION CODE 10H

MASTER TRANSMISSION BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 message for slave 17 FUNCTION CODE 1 10 store setpoints DATA STARTING ADDRESS 2 10 28 setpoint address 1028 NUMBER OF SETPOINTS 2 00 02 2 setpoints = 4 bytes total BYTE COUNT 1 04 4 bytes of data DATA 1 2 01 F4 data for setpoint address 1028 DATA 2 2 27 10 data for setpoint address 1029 CRC 2 33 23 CRC error code

SLAVE RESPONSE BYTES EXAMPLE DESCRIPTION

SLAVE ADDRESS 1 11 mes sage from slave 17 FUNCTION CODE 1 10 store setpoints DATA STARTING ADDRESS 2 10 28 setpoint address 1028 NUMBER OF SETPOINTS 2 00 02 2 setpoints CRC 2 C7 90 CRC error code

GE Power Management MM3 Motor Manager 3 6-11

Page 100

6.3 ERROR RESPONSES 6 COMMUNICATIONS

6.3 ERROR RESPONSES 6.3.1 DESCRIPTION

When a MM3 detects an error other than a CRC error, a response will be sent to th e ma st er. The MSBit of the FUNCTION CODE byte will be set to 1 (i.e. the function code sent from the slave will be equ al to the function code sent from th e master pl us 128). T he foll owing byte will be an excepti on code i ndicating the type o f error that occurred.

Transmissions received from the master with CRC errors will be ignored by the MM3. The slave response to an error (other than CRC error) will be: SLAVE ADDRESS: 1 byte FUNCTION CODE: 1 byte (with MSbit set to 1) EXCEPTION CODE: 1 byte CRC: 2 bytes The MM3 implements the following exception response codes.

• 01 - ILLEGAL FUNCTION The function code transmitted is not one of the functions supported by the MM3.

• 02 - ILLEGAL DATA ADDRESS The address referenced in the data field transmitted by the master is not an allowable address for the MM3.

• 03 - ILLEGAL DATA VALUE The value referenced in the data field tr ansmitted by the m aster is not withi n range for the selec ted data address.

6-12 MM3 Motor Manager 3 GE Power Management

GE MM3 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

TABLE OF CONTENTS

STARTER

CT/VT INPUT S

THERMISTOR

PROGRAMMABLE MESSAGE

STATISTICS

PREFERENCES

LOAD PROTECTION

UNDER/OVERVOLTAGE PROTECTION

STOP CONFIGURA TION

ANALOG INPUT

PROCESS OPTIONS

PRESET COUNTERS AND TIMERS

FACTORY SERVICE DATA

CURRENT SIMULATION

ANALOG OUTPUT SIMULATION

ANALOG INPUT SIMULATION

SWITCH INPUTS SIMULATION

THERMISTOR SIMULATION

PROGRAMMABLE MESSAGE

MOTOR STATUS

COUNTERS