GE 239 Instruction Manual

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Page 1

239 Motor Protection Relay

CAUSE OF LAST TRIP: MECHANICAL JAM

GE Power Management

239

MOTOR PROTECTION RELAY

Instruction Manual

Firmware Revision: 2.6x

239PC Software: 2.6x or newer

Manual P/N: 1601-0060-D9

TRIP

ALARM

ACTUAL

SETPOINT

STORE

RESET

AUXILIARY

SERVICE

PICKUP

COMMUNICATE

MESSAGE

VALUE

GE Multilin

215 Anderson Avenue, Markham, Ontar io

C US

Canada L6E 1B3 Tel: (905) 294-6222 Fax: (905) 201-2098

Internet: http://www.GEindustri al.com/multilin

Manufactured under an

ISO9002 Registered system.

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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 instal- lation, operation, or maintenance. Should further information be desired or should particular problems arise which are not covered sufficiently for the pur-

chaser’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 such assurance is given with respect to local codes and ordinances because they vary greatly.

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TABLE OF CONTENTS

1. OVERVIEW 1.1 239 RELAY FEATURES....................................................1-1

1.2 TYPICAL APPLICATIONS................................................. 1-5

1.3 ORDER CODE .................................................................. 1-6

1.4 SPECIFICATIONS.............................................................1-7

2. INSTALLATION 2.1 MOUNTING .......................................................................2-1

2.2 PRODUCT IDENTIFICATION ...........................................2-2

2.3 EXTERNAL CONNECTIONS............................................2-3

2.4 DIELECTRIC STRENGTH TESTING .............................. 2-13

3. OPERATION 3.1 FRONT PANEL.................................................................. 3-1

3.2 DISPLAY............................................................................3-2

3.3 STATUS INDICATORS ............................................ ....... .. 3-2

3.4 KEYS ........................... ...... ....... ...... ....... ...... ....... ...... ....... .. 3-3

3.5 SETPOINT ACCESS................ ...... ................................... 3-6

3.6 DEFAULT MESSAGES .....................................................3-6

4. PROGRAMMING 4.1 SETPOINT ENTRY METHODS................................ ....... .. 4-1

4.2 S1: 239 SETUP ................................................................. 4-3

4.3 S2: SYSTEM SETUP......................................................... 4-9

4.4 S3: OUTPUT RELAYS .................................................... 4-13

4.5 S4: PROTECTION...........................................................4-15

4.6 TEMPERATURE.............................................................. 4-29

4.7 SWITCH INPUTS . ....... ...... ....... ...... ....... ...... ....... ...... ....... 4-33

4.8 MULTI-SPEED MOTOR .................................................. 4-33

4.9 S5: TESTING...................................................................4-36

5. MONITORING 5.1 ACTUAL VALUES VIEWING.................................... ....... .. 5-1

5.2 A1: STATUS ......................................................................5-2

5.3 A2: METERING ................................................................. 5-6

5.4 A3: PRODUCT INFO.........................................................5-9

6. 239PC SOFTWARE 6.1 OVERVIEW ....................................................................... 6-1

6.2 HARDWARE CONFIGURATION....................................... 6-1

6.3 239PC VERSION ................................... ...... ....... ...... ....... .. 6-2

6.4 INSTALLING/UPGRADING 239PC ................................. .. 6-3

6.5 239PC MENU STRUCTURE................. ...... ....... ...... ....... .. 6-6

6.6 CONFIGURING 239PC ..................................................... 6-7

GE Multilin 239 Motor Protection Relay i

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TABLE OF CONTENTS

6.7 239 FIRMWARE UPGRADE..............................................6-9

6.8 USING 239PC..................................................................6-12

7. COMMUNICATIONS 7.1 MODBUS PROTOCOL ...... ...... ....................................... ...7-1

7.2 ELECTRICAL INTERFACE................................................7-1

7.3 DATA FRAME FORMAT / DATA RATE.............................7-1

7.4 DATA PACKET FORMAT ..................................................7-2

7.5 ERROR CHECKING ..........................................................7-2

7.6 TIMING...............................................................................7-4

7.7 239 SUPPORTED MODBUS FUNCTIONS.......................7-4

7.8 03/04: READ SETPOINTS / ACTUAL VALUES.................7-4

7.9 05: EXECUTE OPERATION..............................................7-5

7.10 06: STORE SINGLE SETPOINT........................................7-6

7.11 07: READ DEVICE STATUS..............................................7-7

7.12 08: LOOPBACK TEST .......................................................7-8

7.13 16: STORE MULTIPLE SETPOINTS.................................7-9

7.14 16: PERFORMING COMMANDS.....................................7-10

7.15 ERROR RESPONSES.....................................................7-11

7.16 MEMORY MAP INFORMATION ......................................7-11

7.17 USER DEFINABLE MEMORY MAP ................................7-11

7.18 239 MEMORY MAP .........................................................7-13

7.19 MEMORY MAP DATA FORMATS ...................................7-31

8. TESTING 8.1 PRIMARY INJECTION TESTING ......................................8-1

8.2 SECONDARY INJECTION TESTING............................. ...8-1

8.3 PHASE CURRENT ACCURACY .......................................8-2

8.4 PHASE CURRENT OVERLOAD........................................8-3

8.5 PHASE UNBALANCE ALARM...........................................8-3

8.6 GROUND CURRENT ACCURACY....................................8-5

8.7 GROUND ALARM AND TRIP ............................................8-5

8.8 SWITCH INPUT .................................................................8-6

8.9 ANALOG OUTPUT.............................................................8-6

8.10 THERMISTOR ALARM ......................................................8-7

8.11 RTD MEASUREMENT.......................................................8-7

8.12 POWER FAILURE / NON-VOLATILE MEMORY...............8-7

8.13 ROUTINE MAINTENANCE VERIFICATION......................8-8

ii 239 Motor Protection Relay GE Multilin

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1 OVERVIEW 1 OVERVIEW

239 INSTRUCTION MANUAL 1 OVERVIEW 1.1 239 RELAY FEATURES

The GE Multilin 239 relay is designed to fully protect three phase AC motors against conditions which can cause damage. In addition to motor protection, the relay has features that can protect associated mechanical equipment, gi ve an alarm befor e damage resu lt s f rom a process malf unction , diagnose problems after a fault and allow verification of correct relay operation during routine main- tenance. Using the ModBus serial communicati ons interface, motor starters throughout a plant can be connected to a central control/monitoring system for continuous monitoring and fast fault diagno- sis of a complete process.

One relay is required per motor. Since phase current is monitored through current transformers, motors of any line voltage can be protected. The relay is used as a pilot device to cause a contactor or breaker to open under fault conditions; that is, it does not carry the primary motor current. When the over temperature option is ordered, up to 3 RTDs can be monitored. These can all be in the sta- tor or 1 in the stator and 2 in the bearings. Installing a 239 in a motor starter for protection and moni- toring of motors will minimize downtime due to process problems.

PROTECTION

• Overload (15 selectable curves)

• Short circuit

• Locked rotor

• Stall / mechanical jam

• Repeated starts (Mod 505)

• Single phase / unbalance

• Ground fault

• Overtemperature (Thermistor & 3 RTDs)

• Undercurrent

• Overload w a rn in g

• Breaker failure

FEATURES

• Status/current/temperature display

• Fault diagnosis

• Trip record

• Memory lockout

• Thermal capacity / load% / RTD analog output

• Trip / alarm / auxiliary / service relay out- puts

• Motor Running Hours

• Motor maximum current on last start

• Simulation mode for field testing

• Clear LCD display

• RS485 Modbus communications interface

• AC/DC control power

• Compact size, fits most starters

• Update options and/or MODs in field

• CSA/UL Approved

GE Multilin 239 Motor Protection Relay 1-1

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1 OVERVIEW 1 OVERVIEW

400A

3 PHASE 4160V BUS

FUSED

CONTACTOR

PHASE

CTs

GROUND

MOTOR

TRIP

THERMISTOR/ STATOR RTD

BEARING RTDs

LOAD

UNDERCURRENT

UNBALANCE

LOCKED ROTOR

SHORT CIRCUIT

TIMED OVERLOAD

INSTANTANEOUS

50G

GROUND FAULT

STATOR OVER

TEMPERATURE

BEARING OVER TEMPERATURE

239 RELAY

TRIP

RELAY

ALARM

RELAY

AUXILIARY

RELAY

SERVICE

RELAY

RS485

FAULT/ PROCESS ALARM

FAULT/ ALARM/ PROCESS CONTROL

SERVICE ALARM

RS485 REMOTE COMMUNICATION

Figure 1–1: CONTINUOUS PROTECTION FEA TURES

1-2 239 Motor Protection Relay GE Multilin

819763AF.CDR

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1 OVERVIEW 1 OVERVIEW

40 character illuminated display for all light conditions.

DISPLAY

• Setpoints

• Actual values

• Status messages

• Fault conditions

STATUS INDICATORS

PICKUP

• Trip: Lit when the 239 detects a trip.

• Alarm: Lit when the 239 detects an alarm.

• Auxiliary: Lit when the auxiliary relay is operated.

COMMUNICATE

pickup

fault condition.

• Pickup: Lit when motor full load or ground

• Service: Lit when the 239 detects an internal

flashes if RS485 activity but invalid

messages, and on (steady) if

is exceeded.

• Communicate: Off if there is no communication at all,

communication is successful.

E G A S S E M

KEYPAD

Rubber keypad makes installed unit dust tight and splash

E U L

proof. Meets IP53/NEMA12.

PROTECTIVE DOOR

819790A -X2.CDR

Covers keys when not in use.

AUXILIARY

SERVICE

Motor Protection Relay

239

CAUSE OF LAST TRIP:

ALARM

TRIP

MECHANICAL JAM

Figure 1–2: FEATURE HIGHLIGHTS – FRONT

COMPACT DESIGN

Replaces many discrete components

with one standard unit.

GE Multilin 239 Motor Protection Relay 1-3

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1 OVERVIEW 1 OVERVIEW

R D

3.C

sa%of

User specified inputs.

Field reset after a trip.

Over-rides lockout for process restarting.

Enable/disable setpoint programming.

Cause motor to trip by opening contactor

or energizing breaker trip coil.

Signals an alarm is present.

Programmable for control or separate trip/alarm.

Serial port commands for remote control.

Signals internal relay fault.

Service is required.

H-X

819790A

Select output as: thermal capacity used, current a

full load, average current, RTD 1-3 temperature. Isolated

4-20 mA for PLC process input or 0-1 mA for thermal

OPTIONAL ANALOG OUTPUT

RS485 serial communications, 1200-19200 baud for

remote monitoring, setpoint programming, and

COMMUNICATIONS

commands. Modbus RTU protocol.

RESTART:

ACCESS:

SWITCH INPUTS

RESET:

OPTION 1&2:

capacity meter.

Mix RTD types. Separate stator and bearing monitoring

OPTIONAL 3 RTD INPUTS

Polarizing voltage input for directional ground sensing

(MOD 509)

OPTIONAL DIRECTIONAL GROUND SENSING

4 RELAYS

TRIP:

AUXILIARY:

ALARM:

SERVICE:

Door slides open for easy access

to fuse.

CUSTOMER ACCESSIBLE FUSE

AC/DC CONTROL POWER

Figure 1–3: FEATURE HIGHLIGHTS – REAR

1-4 239 Motor Protection Relay GE Multilin

Universal control power

90-300 VDC/70-265 VAC.

3 isolated phase CT inputs.

Accept 1 amp or 5 amp secondary.

PHASE CT INPUTS:

TEMPERATURE SENSING

NTC or PTC thermistor input.

5A or 50:0.025 CT input for

residually connected phase CTs

GROUND CT INPUT

or separate core balance CT.

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1 OVERVIEW 1 OVERVIEW

1.2 TYPICAL APPLICATIONS

Versatile features and simple programming controls make the 239 an ideal choice for motor and equipment protection in a wide range of applications. In addition to basic electrical protection for motors, the 239 can protect against common faults due to process problems, such as:

1. Mechanical protection of pumps using the undercurrent feature to detect loss of suction or a closed discharge valve.

2. Personnel safety and mechanical protection of fans against loss of air flow in mines or flow in steam generating boilers using the undercurrent feature.

3. Electrical protection of compressor motors from excessive run up time caused by an open outlet using the start timer.

4. Mechanical protection of gears, pumps, fans, saw mill cutt ers, and compressor s against mechan- ical jam using the mechanical jam trip feature.

5. Safety to personnel from shock hazard using the ground fault feature to detect winding shorts or leakage currents from moisture in mines.

6. Protection of motors and equipment from operator abuse using the thermal memory lockout

Cost savings are provided using versatile features such as:

1. Diagnostic information af ter a trip to identify problems and bring the process back on line quickly.

2. Fault indication of ground fault without shutdown to warn that corrective maintenance is required .

3. Simplified spare parts stocking and initial specification design using one universal model for many motor sizes, applications and settings.

4. Serial communication using the popular Modbus protocol t o remotely moni tor all values, pr ogram setpoints, issue commands and diagnose faults to minimize process disruptions.

5. Output of motor current suitable for programmable controller interface (4 to 20 mA).

GE Multilin 239 Motor Protection Relay 1-5

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1 OVERVIEW 1 OVERVIEW

a) MODIFICATIONS

1.3 ORDER CODE

• MOD 500: Portable test/carrying case

• MOD 501: 20 to 60 V DC / 20 to 48 V AC control power

• MOD 504: Removable terminal blocks

• MOD 505: Enhanced start protection

• MOD 506: Custom programmable overload curve

• MOD 509: Directional ground sensing with 120 V AC polarizing voltage

• MOD 512: 1 AMP Ground CT input

• MOD 513: Class 1 Division 2 operation

• MOD 517: Australian Mines approval

b) ACCESSORIES

• 239PC Windows software (free upon request)

• Phase and ground CTs

• RS232 to RS485 converter (required to connect a computer to the 239 relay(s) to run 239PC

• RS485 Terminating Network

• 2.25” collar for limited depth mounting (1009-0068)

• Large size (8.5 x 11”) instruction manual (free upon request)

c) CONTROL POWER

• 90 to 300 V DC / 70 to 265 V AC standard

• 20 to 60 V DC / 20 to 48 V AC (MOD 501)

1-6 239 Motor Protection Relay GE Multilin

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1 OVERVIEW 1 OVERVIEW

1.4 SPECIFICATIONS

PHASE CURRENT INPUTS

CONVERSION: true rms, 16 samples/cyc le CT INPUT: 1 A and 5 A secondary RANGE: 0.1 to 11 × phase CT primary FREQUENCY: 20 to 300 Hz ACCURACY: ±2% of full scale

GROUND CURRENT INPUTS

CONVERSION: true rms, 16 samples/cyc le CT INPUT: 5 A secondary and 50:0.025 RANGE: 0.03 to 1.4 × CT primary (5A CT)

0.05 to 16.0 A (50:0.025 CT) FREQUENCY: 20 to 300 Hz ACCURACY:

5 A CT: ±2% of full scale (5A CT) 50:0.025 CT: ±0.03 A (0 to 0.49 A)

±0.07 A (0.50 to 3.99 A) ±0.20 A (4.00 to 16.00 A)

OVERLOAD CURVES TRIP TIME

CURVES: 15 curves, fixed shape OVERLOAD PICKUP INHIBIT: 1.00 to 5.00 × FLC PICKUP LEVEL: 1 to 1500 A ACCURACY:

PICKUP: ± 1% of Displayed Value TIME: ± 2% of trip time or ± 1 sec

whichever is greater

START PROTECTION

THERMAL: separate start & run protection ACTIVA TION: inrush 3 phase current increases

from <5% to >101% FLC in 1 s

DEACTIVATION: current drops to <100% FLC

motor running if current >5%

FLC LOCKED ROTOR: 0.5 to 11.0 ×FLC SAFE STALL TIME:1.0 to 600.0 sec

THERMAL MODELING

THERMAL CAPACITY: separate start/run,

exponential cool down

COOL RATE:

STOP: 1 to 5000 minutes programmable RUN: 50% of stopped cool time HOT/COLD: 50 to 100%, hot after 15 min running LOCKOUT: 1 to 5000 min programmable ±20%

power on / off

UNBALANCE

RANGE: 5 to 100% / OFF ACCURACY: ± 2% DELA Y: 0 - 60 sec CALCULATION:

IMI

–

AVIFLC

, UB%≥

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

100×=

SHORT CIRCUIT & GROUND TRIP

GROUND TRIP LEVEL: 0.05 to 15A (50:0.025 CT)

3 to 100% (5 A CT) S/C TRIP LEVEL: 1 to 11 × CT PRI / OFF INTENTIONAL DELAY:INST. or 10 to 60000 ms

programmable INST: 20 to 45 ms * TOTAL DELAY: INST + INTENTIONAL * trip time accuracy guaranteed if

current > 1.4 × trip level setting

BREAKER FAILURE TIMING

DELAY: INST. or 10 to 60000 ms

programmable INST: 20 to 45ms * TOTAL DELAY: INST + INTENTIONAL * trip time accuracy guaranteed if

current > 1.4 × trip level setting

IMI

–

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

FLC

100×=

where:

AVIFLC

= average phase current

= current in phase with max dev. from

= full load current setting

FLC

, UB%<

THERMISTOR

TYPE: PTC or NTC programmable HOT RESISTANCE:100 to 30 000 Ω COLD RESISTANCE: 100 to 30 000 Ω DELA Y: 2 sec ACCURACY: ±5% or 100 Ω, whichever is

greatest

UNDERCURRENT

RANGE: 5 to 100% FLC / OFF DELAY: 0 to 250 sec

GE Multilin 239 Motor Protection Relay 1-7

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1 OVERVIEW 1 OVERVIEW

RTDs (OPTIONAL)

INPUTS: 3 RTDs, stator/bearing prog.

TYPE: 100 Pt (DIN 43760), 100 Ni, 120

Ni, 10 Cu programmable

RANGE: –40 to 200 °C/ –40 to 400 °F

TRIP/ALM RANGE: 0 to 200 °C / 0 to 400 °F DEAD BAND: 2 °C / 4 °F ACCURACY: ±2 °C / ±4 °F LEAD RESISTANCE:

Pt or Ni RTD: 25 Ω max Cu RTD: 3 Ω max

3 wire lead resistance compensation

COMMUNICATIONS

TYPE: RS485 2 wire, half duplex, isolated BAUD RATE: 1200 to 19.2k bps PROTOCOL: Modbus

RTU

FUNCTIONS: Read/write setpoints, read actual

values, execute commands

ANALOG OUTPUT (OPTIONAL)

PROGRAMMABLE

OUTPUT 0-1 mA 0-20 mA 4-20 mA

MAX LOAD 2400 Ω 600 Ω 600 Ω MAX OUTPUT 1.1 mA 21 mA 21 mA

ACCURACY: ±2% of full scale reading

ISOLATION: 36 V DC isolated, active source

OUTPUT RELAYS

92/7$*( 0$.(&$55<

RESISTIVE 30 VDC 10 30 10

125 VDC 10 30 0.5 250 VDC 10 30 0.3

INDUCTIVE (L/R=7 ms)

RESISTIVE 120 VAC 10 30 10

INDUCTIVE PF=0.4

30 VDC 10 30 5 125 VDC 10 30 0.25 250 VDC 10 30 0.15

250 VAC 10 30 10 120 VAC 10 30 10 250 VAC 10 30 10

CONFIGURATION: FORM C NO/NC CONTACT MATERIAL: SILVER ALLOY

&217,18286

0$.( &$55<

V

%5($.

CT INPUTS

CT INPUT

(A)

1 0.009 0.01 PHASE CT (1A)

PHASE CT (5A)

GROUND CT (5A)

GROUND CT (50:0.025)

PHASE CT (1A)

PHASE CT (5A)

GROUND CT (5A)

5 0.2 0.01

20 3.5 0.01

5 0.04 0.002

25 0.9 0.002

100 16 0.002

5 0.04 0.002

25 1.1 0.002

100 17 0.002

0.025 0.07 116

0.1 1.19 119

0.5 30.5 122

1s xCT 5s xCT continuous

100 40 3

50:0.025 GROUND INPUT WITHSTAND:

CONTINUOUS: 150 mA MAXIMUM: 12 A for 3 cycles 50:0.025 input can be driven by a 50:0.025 CT.

BURDEN

VA Ω

BURDEN

xCT

SWITCH INPUTS

TYPE: dry contacts OUTPUT: 29 V DC, 10 mA (pulsed) DURATION: 100 ms minimum

CONTROL POWER

INPUT: 90 to 300 VDC or

70 to 265 VAC, 50/60 Hz POWER: 10 VA (nominal) 20 VA (max) HOLDUP: non-failsafe trip: 200 ms

failsafe trip: 100 ms

both times at 120VAC / 125VDC

It is recommended that all 239 relays be powered up at least once per year to avoid

NOTE

deterioration of electrolytic capacitors in the power supply.

1-8 239 Motor Protection Relay GE Multilin

Page 15

1 OVERVIEW 1 OVERVIEW

FUSE TYPE/RATING

5 × 20mm, 2.5 A, 250V Slow blow, High breaking capacity

ENVIRONMENT/GENERAL INFO

POLLUTION DEGREE: 2 OVERVOLTAGE CATEGORY: 2 INSULATION VOLTAGE: 300 V

OPERATING TEMPERATURE RANGE: 0°C to 60°C STORAGE TEMPERATURE RANGE: –40°C to 70°C IP CLASS: 40

INSTALLATION

WARNING: HAZARD may result if the

product is not used for its intended purpose.

VENTILATION REQUIREMENTS: None CLEANING REQUIREMENTS: None

TYPE TESTS

DIELECTRIC STRENGTH: 2.0 kV for 1 minute to

relays, CTs, power supply INSULATION RESISTANCE:IEC255-5, 500 V DC TRANSIENTS: ANSI C37.90.1 Oscillatory 2.5

kV / 1 MHz; ANSI C37.90.1 Fast

Rise 5 kV / 10 ns; Ontario Hydro

A-28M-82; IEC255-4 Impulse/

High Frequency Disturbance

Class III Level IMPULSE TEST: IEC 255-5 0.5 Joule 5 kV RFI: 50 MHz/15 W Transmitter EMI: C37.90.2 Electromagnetic Inter-

ference @ 150 MHz and 450

MHz, 10 V/m ST ATIC: IEC 801-2 Static Discharge HUMIDITY: 95% non-condensing TEMPERATURE: –10°C to +60°C ambient ENVIRONMENT: IEC 68-2-38 Temp/Humidity

Cycle DUST/MOISTURE: NEMA 12/IP53

PACKAGING

SHIPPING BOX: 8½" × 6" × 6" (L × H × D)

215 mm × 152 mm × 152 mm

(L × H × D) SHIP WEIGHT: 5 lbs. / 2.3 kg

CERTIFICATION/COMPLIANCE

ISO: Manufactured under an

ISO9001 recognized program UL: Recognized under E83849 CSA: Approved under LR41286

NOTE: Specifications subject to change without notice.

GE Multilin 239 Motor Protection Relay 1-9

Page 16

1 OVERVIEW 1 OVERVIEW

1-10 239 Motor Protection Relay GE Multilin

Page 17

2 INSTALLATION 2 INSTALLATION

239 INSTRUCTION MANUAL 2 INSTALLATION 2.1 MOUNTING

Physical dimensions for the 239 and the required cutout dimensions are shown below. Once the cut- out and mounting holes are made in the panel, use the eight #6 self tapping screws supplied to secure the relay. Mount the relay on a panel or switchgear door to allow operator access to the front panel keys and indicators.

GE Multilin 239 Motor Protection Relay 2-1

Figure 2–1: PHYSICAL DIMENSIONS

Page 18

2 INSTALLATION 2 INSTALLATION

2.2 PRODUCT IDENTIFICATION

Product attributes will vary according to the configuration and options installed based on the cus- tomer order. Before applying power to the relay, examine the label on the back of the 239 and check that the correct options are installed.

The information included on the product label is explained below:

654

GE Power Management

MAXIMUM CONTACT RATING

250 VAC 10A RESISTIVE

1/4HP 125VAC 1/2HP 250VAC

1/4 HP 125VAC 1/2HP 250VAC

MADE IN CANADA

NRTL

MODEL

SUPPLY VOLTAGE SERIAL NO.:

SUPPLY VOLTAGE

TAG# 1234-567-89

TAG#

239-RTD-AN

90-300VDC 20VA 70-265VAC 50/60HZ 20VA

MOD#s NONE

MOD#

FIRMWARE

64D240C4.000

110.000

D6401234

819790AH-X4.CDR

Figure 2–2: 239 PRODUCT LABEL (EXAMPLE)

1. MODEL NO: The model number shows the configuration of the relay. The model number for a basic unit is 239. RTD and AN will appear in the model number only if the RTD option or Analog Output option is installed.

2. SUPPLY VOLTAGE: Indicates the 239 power supply input configuration. The 239 shown above can accept any AC 50/60Hz voltage from 70 to 265 V AC or DC voltage from 90 to 300 V DC.

3. TAG#: This is an optional identification number specified by the customer.

4. MOD#s: These are used if unique features have been installed for special customer orders. These numbers should be available when contacting GE Multilin for technical support. Up to five MOD#s can be installed into the 239.

5. SERIAL NO: Indicates the serial number for the 239 in numeric and barcode format.

The following table s hows the rev ision h istor y of the 2 39. Eac h rev ision o f the i nstruct ion manual cor- responds to a particular firmware revision in the 239. The instruction manual revision is located on the first page of the manual as part of the manual P/N (1601-00XX-Revision). The 239 firmware revi- sion is loaded in the relay and can be found by scrolling to the display message

,1)2?),50:$5(9(56,216?0$,1352*5$09(5

$ 352'8&7

When using the manual to determine relay features and settings, ensure that the revision corre-

sponds to the 239 firmware revisi on using the table below. For a large instruction manual (8.5” × 11”) the part number is 1601-0067; for a small instruction manual (5.5” × 7.25”) it is 1601-0060.

Table 2–1: FIRMWARE/MANUAL REVISIONS TABLE

MANUAL PART NO. FIRMWARE VERSION MANUAL PART NO. FIRMWARE VERSION

1601-00XX-C4 2.00 1601-00XX-D3 2.3x 1601-00XX-C5 2.01 1601-00XX-D4 2.3x 1601-00XX-C6 2.10 1601-00XX-D5 2.40 1601-00XX-C7 2.11 1601-00XX-D6 2.50 1601-00XX-C8 2.12 1601-00XX-D7 2.51 1601-00XX-D1 2.20 1601-00XX-D8 2.51 1601-00XX-D2 2.30 1601-00XX-D9 2.6x

2-2 239 Motor Protection Relay GE Multilin

Page 19

2 INSTALLATION 2 INSTALLATION

2.3 EXTERNAL CONNECTIONS

Signal wiring is to box terminals that can accommodate wire as large as 12 gauge. CT connections

are made using #8 screw ring terminals that can accept wire as large as 8 gauge (see Figure 2–3: TYPICAL WIRING DIAGRAM on page 2–4). A minimal configuration will include connections for control power, phase CTs and the trip relay. Other features can be wired as required. Considerations for wiring each feature are given in the sections that follow.

Table 2–2: EXTERNAL CONNECTIONS

CT ROW SIGNAL LOWER ROW SIGNAL UPPER ROW

1 Phase A CT 5A 13 Safety ground 36 Control live (+) 2 Phase A CT 1A 14 Filter ground 37 Control neutral (–)

3 Phase A CT COM 15 RS485 A+ 38 Sw com 4 Phase B CT 5A 16 RS485 B– 39 Sw com 5 Phase B CT 1A 17 RS485 ground 40 Sw com 6 Phase B CT COM 18 Analog out + 41 Sw com 7 Ph as e C CT 5A 19 Analog ou t – 42 Sw com 8 Phase C CT 1A 20 Analog out shield 43 Access sw +

9 Phase C CT COM 21 Thermistor in + 44 Restart sw + 10 Ground CT 5A 22 Thermistor com 45 Reset sw + 11 Ground CT 50:0.025 23 Trip NO 46 Option 1 sw + 12 Ground CT COM 24 Trip COM 47 Option 2 sw +

25 Trip NC 48 RTD shield 26 Alarm NO 49 RTD1 hot 27 Alarm COM 50 RTD1 comp 28 Alarm NC 51 RTD1 ret 29 Auxiliary NO 52 RTD2 hot 30 Auxili ar y C O M 53 RTD2 comp 31 Auxiliary NC 54 RTD2 ret 32 Service NO 55 R TD3 hot 33 Service COM 56 RTD3 comp 34 Service NC 57 RTD3 ret 35 Unused 58 Unused

GE Multilin 239 Motor Protection Relay 2-3

Page 20

2 INSTALLATION 2 INSTALLATION

2 CT CONNECTION

PHASE A CT PHASE A CT

(NO GROUND)

L1 L1

L2 L2

PHASE C CT PHASE C CT

5A 5A

PHASE A PHASE A

SUPPLY

5A 5A

1A 1A

COM COM

PHASE B PHASE B

5A 5A

1A 1A

COM COM

1A 1A

COM COM

PHASE C PHASE C

STARTER

L3 L3

10 10

11 11

12 12

5A 5A

50:0.025 50:0.025

COM COM

GROUND GROUND

PHASE A CT

CONTROL POWER

80-300 VDC

70-265 VAC 50/60 Hz

13 14

FILTER

SAFETY

GROUND

CONTROL

36 37

- PHASE A

POWER

COM

NOTES:

RELAY CONTACT STATE SHOWN WITH CONTROL POWER NOT APPLIED.

RELAY FACTORY DEFAULTS: TRIP, ALARM, AUXILIARY: SERVICE:

RELAY #1

TRIP

RELAY #2

ALARM

RELAY #3

AUXILIARY

RELAY #4

SERVICE

SETPOINT

ACCESS

EMERGENCY

RESTART

EXTERNAL

RESET

OPTION 1

OPTION 2

FAILSAFE

NON-FAILSAFE

CONTROL

POWER

CONTACTOR

COIL

START

STOP

GENERAL ALARM

ACCESS KEY SWITCH

EMERGENCY RESTART

EXTERNAL RESET

OPTION 1

OPTION 2

SWITCHGEAR

GROUND BUS

RESIDUAL GROUND CONNECTION

PHASE B CT

ZERO SEQUENCE GROUND CONNECTION

PHASE B CT

PHASE C CT

COM

PHASE B

COM

PHASE C

COM

CURRENT INPUTS

239 MOTOR PROTECTION RELAY

GE Power Management

OUTPUT RELAYS

SERIAL

485 GROUND

OUT

ANALOG

THERMISTOR

SWITCH INPUTS

RTD#1

RTD#2

RTD TEMPERATURE SENSING

RTD#3

SHIELD TERMINALS ARE INTERNALLY CONNECTED TO SAFETY GROUND TERMINAL 13

RTD TEMPERATURE SENSING AND ANALOG OUTPUT OPTIONAL

50:0.025

GROUND CT

TWIST LEADS

GROUND

RS485 +

RS485 -

0-1mA

4-20mA

SHIELD

COM

SHIELD

HOT

COMP

HOT

COMP

HOT

COMP

COM

50:0.025

IN+

RET

L1L1

L2L2

L3L3

Figure 2–3: TYPICAL WIRING DIAGRAM

MOTOR

USE SHIELDED TWISTED

PAIR WIRE

RS485

THERMAL CAPACITY

STATOR

THERMISTOR

STATOR

RTD

STATOR/

BEARING RTD

STATOR/

BEARING RTD

USE SHIELDED WIRE

819751B5.DWG

819829B6.CDR

2-4 239 Motor Protection Relay GE Multilin

Page 21

2 INSTALLATION 2 INSTALLATION

a) CONTROL POWER (36/37)

A universal AC/DC power supply is standard. It covers the range 90 to 300 V DC and 70 to 265 V AC at 50/60 Hz. It is not necessary to make any adjustment to the relay as long as the control voltage falls within this range. A low volt age power suppl y is availa ble upon a request of MOD# 501. It covers the range 20 to 60 V DC and 20 to 48 V AC at 50/60 Hz. Verify from the product identification label on the back of the relay that the control voltage matches the intended application. Connect the con- trol voltage input to a stable source of supply for reliable operation. A 2.5 A fuse is accessible from the back of the unit without opening the relay by sliding back the fuse access door.

b) PHASE CT INPUTS (1-9)

Current transformer secondaries of 5 or 1 A can be used for current sensing. Each phase current input has 3 terminals: 5 A input, 1 A input, and common. Select the 1 or 5 A terminal and common to match the phase CT secondary. Observe the polarity indicated in the TYPICAL WIRING DIAGRAM, otherwise current measures incorrec tly for the 2-phase or residually connected CT configurations.

CTs should be selected to be capable of supplying the required current to the total secondary load which includes the 239 relay burden mentioned in Section 1.4: SPECIFICATIONS at rated second- ary current and the connection wiring burden. The CT must not saturate under maximum current conditions which can be up to 8 t imes mo tor ful l l oad during st art ing or great er than 12 ti mes duri ng a short circuit. Only CTs rated for protective relaying should be used since metering CTs are usually not rated to provide enough current during faults. Examples of typical CT ratings are:

Table 2–3: TYPICAL CT RATINGS

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CSA (Canada)

ANSI (USA) 10T4 B0.2 or

IEC (Europe) 5P15 0.2VA 1 Amp P = Protection class

NOTE:

The sizes shown ab ove may not be standard CT ra tings. The num bers are merel y used to in dicate what size CTs can be used with the 239.

10L4 B0.2 1 Amp L = Protection class

10 =10% ratio error 4 = Voltage the CT can deliver to load burden at 20 × rated

secondary current without exceeding the 10% ratio error

B0.2 = Maximum burden (0.2 Ω) that can be put on the

transformer without exceeding the 10% ratio error

10L20 B0.2 5 Amp same as 1 Amp input

1 Amp T = Ratings determined by Tests

10C4 B0.2

10T20 B0.2 or 10C20 B0.2

5P15 2.5VA 5 Amp same as 1 Amp input

5 Amp same as 1 Amp input

C = Ratings determined by Calculations 10 = 10% ratio error 4 = Voltage the CT can deliver to load burden at 20 × rated

secondary current without exceeding the 10% ratio error

B0.2 = Maximum burden (0.2 Ω) that can be put on the

transformer without exceeding the 10% ratio error

5 = Maximum %voltage error at limiting factor 15 =

Limit factor, determines max. voltage CT can deliver to load burden without exceeding the %voltage error

0.2 = Maximum amount of continuous burden allowed for rated CT secondary

GE Multilin 239 Motor Protection Relay 2-5

Page 22

2 INSTALLATION 2 INSTALLATION

c) GROUND CT INPUT (10/11/12)

Ground sensing terminals are labeled 5A, 50:0.025 , and COM. Connect ion depend on the gr ounding system and sensitivity required. For high resistance grounded systems that limit the ground current or in mines where low levels of ground leakage must be detected, use a separate CT to sense ground current. In this configuration, referred to as zero sequence or core balance detection, all three phase conductors must pass through the CT window. If the phase conductors are bundled in a cable with a ground, the ground wire must either pass outside the ground CT window or be routed

back through the window if it passes through as part of the cable. Shielded and unshielded cable installations are ill ustrated in the TYPICAL WIRING DIAGRAM. A ground CT with a ratio of 50:0.025 for sensing primary gr ound currents from 0.05 to 15 A is available from GE. Connect t his CT to t ermi- nals 50:0.025 and COM. If a conventi onal 5 A sec ondary CT i s used for zer o sequence gro und sens - ing, connect it to the 5A and COM terminals. A 1 A secondary CT can also be used; however, to prevent readings from being off by a factor of 5, the ground CT primary setpoint must be adjusted.

See Section 4.3a) CT INPUTS on page 4–10 under

*5281' &7 35,0$5< for suitable settings in this

situation. Due to the low secondary currents, it i s recommended that the ground CT secondary leads be twisted together and routed to the 239 away from high current carrying conductors. NOTE: The

50:0.025 input is only recommended for resistance grounded systems. Where the system is solidly grounded or high levels of current are to be detected use the 5A ground input.

For low resistance or solidly grounded systems where higher ground fault currents will flow, the phase CTs can be residually connected to provi de grou nd sensing l evels a s l ow as 20% of the p hase CT primary rating. For example, 100:5 CTs connected in the residual configurati on can sense ground currents as low as 20 A (pri mary) without requiring a separate ground CT. This saves the expense of an extra CT however 3 phase CTs are required. If this connection is used on a high resistance grounded system verify that the ground fau lt alarm and tr ip curr ent se tpoints are below the maximum ground current that can flow due to limiting by the system ground resistance. Sensing levels below 20% of the phase CT primary rating are not recommended for reliable operation.

UNSHIELDED CABLE

SHIELDED CABLE

Figure 2–4: CORE BALANCE GROUND CT INSTALLATION

2-6 239 Motor Protection Relay GE Multilin

Page 23

2 INSTALLATION 2 INSTALLATION

d) OUTPUT RELAYS

There are 4 output relays each with form C cont acts (normally open (NO), normally closed (NC), and common (COM)). Contact ratings for each relay are identical and are listed in Section 1.4: SPECIFI-

CATIONS. Figure 2–3: TYPICAL WIRING DIAGRAM on page 2–4 shows the state of the relay con- tacts with no control power applied; that is, the relays are not energized. Relay contact wiring will depend on how the relay operation is programmed in

62873875( /$<6 (see Section 4.4: S3: OUT-

PUT RELAYS on page 4–13).

Relay contacts must be considered unsafe to touch when the system is energized. If the relay contacts are required for low voltage accessible applications, it is the cus-

WARNING

tomer’s responsibility to ensure proper insulation levels.

• TRIP RELAY (23/24/25): Wiring of the trip relay contacts will depend on whether a breaker or contactor is the motor tripping device and if failsafe or non-failsafe operation is desired. See pro- gramming considerations for the trip relay in Section 4.4a) TRIP RELAY on page 4–14.

Contactor:

For maximum motor protection, program the trip relay to be failsafe and wire the contactor to the NO/COM trip relay terminals. W hen control power is lost to the 239, the con- tactor will trip to ensure maximum protection. If process considerations are more important than protection, program non-failsafe and wire the contactor to the NC/COM trip relay termi- nals. When control power to the 239 is lost, no protection is available and the motor will con- tinue to run. This has the advantage that the process will not shut down, however the motor may be damaged if a fault develops under these conditions.

Breaker:

Wire the breaker trip coil to the NO/COM trip relay terminals. The breaker auxiliary 52a contact (closed when the bre aker is closed) should be wired in ser ies with the t rip relay to break the current to the trip co il as soon as the breaker opens. Program the trip relay as non- failsafe. Breaker close coil control is not provided by the 239 as it is a protection device. Con- trol for closing the breaker must be provided externally.

• ALARM RELAY (26/27/28): A selected alarm condition will cause the alarm relay to activate. Alarms can be disabled for each feature so that only desired conditions cause an alarm. Alarm conditions that can be programmed to activate the alarm relay are: ground fault, undercurrent, phase unbalance, overload, RTD 1-3, the rmistor, option switch 1, option switch 2, test and loss of control power (failsafe mode). If an alarm is required when control power is not present, indicat- ing that protection is not available, select

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)$,/6$)( operation for the alarm relay using 6287387

. Contacts NC/COM will be normally open go ing to a cl osed state on an alarm. Since the service relay gives a fault indication for loss of control power, it may be preferable to have no alarm on loss of control power and use the service relay for this indica- tion to distinguish it from a process problem. In this case, wire the external alarm to the NO/COM terminals which will be normall y open going to a closed stat e on an alarm condition. If

81/$7&+('

mode is selected using setpoint 62873875(/$ < 6?$/$505(/$<?$/$50$&7,9$7,21 the alarm relay automatically resets when the alarm condition disappears. For

/$7&+(' mode, the key

RESET

must be pressed (or serial port reset com mand received) to reset the alarm relay.

• AUXILIARY RELAY (29/30/31): An additional output relay is provided which can be configured for:

short circuit/ground trip:

output to trip the main feeder breaker in the event of a short circuit at the motor. See setpoint

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GE Multilin 239 Motor Protection Relay 2-7

Contactors are not rated to open under a short circuit. Use this

Page 24

2 INSTALLATION 2 INSTALLATION

undercurrent:

Use as a process control output such a s in a convey or where an under curren t condition controls flow of product onto the conveyor or in a pump situation to control a valve. Also can be used as an independent alarm. See setpoint

6 3527(&7,21?3+$6( &85

5(17?81'(5&855(17?81'(5&855(17)81&7,21

serial port command:

For remote control via the RS485 communications link, a command

can be issued to directly control this relay. This may be useful for control applications. See

Chapter 7: COMMUNICATIONS. For further process control the auxiliary relay can be assigned to

switch 2

, or

thermistor function

option switch 1, option

• SERVICE RELAY (32/33/34): If the 239 detects an internal failure during its self monitoring or if control power is not present, the NO/COM t erminals of the service relay w ill be open to indicate that service is required. This relay is internally programmed to be failsafe so that in the normal condition, with control power applied, the relay is energized and the NO/COM terminals shown in Figure 2–3: TYPICAL WIRING DIAGRAM on page 2–4 are closed. Connect these relay contacts to a suitable signaling input of a DCS system.

e) SWITCH INPUTS

Each switch common terminal 38/39/40/41/42 is internally connected inside the 239. A single com- mon wire can be connected between any of these terminal s and a remote switc h common terminal to reduce wiring if preferred.

239

RELAY

ISOLATED POWER SUPPLY

+29VDC

FILTER IN

TO LOGIC

OPTO

ISOLATION

Figure 2–5: SWITCH INPUT CIRCUIT

• SETPOINT ACCESS (38/43): The access terminals 38 and 43 must be shorted together in order for the faceplate keypad to have the ability to store new setpoints. Typically the access terminals would be connected to a security keyswitch to allow authorized access only. Serial port com- mands to store a new setpoint will operate even if the access terminals are not shorted. When a

TYPICAL

SWITCH

TERMINALS

COM

10mA PULSED

819780A3.CDR

EXTERNAL SWITCH

2-8 239 Motor Protection Relay GE Multilin

Page 25

2 INSTALLATION 2 INSTALLATION

jumper wire is connected between the access terminals all setpoints and configurations can be programmed using the keypad. Once programming is complete the jumper will normally be removed from these terminals or the connected keyswitch left open. When this is done all actual and setpoint values can still be accessed for viewing; however, if an attempt is made to store a new setpoint value the message point will remain intact. In this way all of the programmed setpoints will remain secure and tamperproof.

• EMERGENCY RESTART (39/44): When production or safety considerations become more

important than motor protection requirements, it may be necessary to restart a tripped motor. If it is desired to override relay trips or lock-outs and restart the motor, a normally open keyswitch should be installed between the emergency restart terminal s 39 and 44. Momentarily shorting these terminals together will cause the t hermal memory of th e 239 to discharge to 0% used. The emergency restart terminals can be used to override a trip lockout caused by a running overload or locked rotor sta rt. This option should be used only when an immediate restart after a lock-out trip is required for process continuity or personnel safety. Discharging the thermal memory of the 239 gives the relay an unrealistic value for the thermal capacity remaining in the motor and it is possible to thermally damage the motor by restarting it. Shorting the Emergency Restart termi- nals together will have no effect unless the motor is stopped (no phase or ground current present). Having these terminals permanently shorted together will cause the memory to be cleared whenever the motor stops. This will allow for an immediate restart after an overload trip. Caution is recommended in the use of Emergency Restart input since the thermal protective functions of the 239 will be over-ridden and it is possible to damage the motor.

• EXTERNAL RESET (40/45): An external reset switch which has the same effect as the front

panel RESET key or a serial port reset command can be connected to terminals 40 and 45 for remote reset operation. The switch should have normally open contacts. Upon the momentary closure of these contacts the 239 will reset any latched alarm, latched auxiliary relay output, or trip providing it is not locked out. Installing a jumper wire permanently across the external reset terminals will cause the 239 to reset any latched alarm or trip whenever motor conditions allow for automatic reset.

• OPTION SWITCH 1 (41/46) & 2 (42/47): Two option inputs are provided . Th ese swit ch i nput s are

considered active when closed. The state of these input switches can be monitored by the serial port for process signaling. They can also be programmed to provide an alarm, trip, alternate motor control setpoints or process control after a programmable time delay. Programming for these switch inputs, if used, is found in

illegal access

63527(&7,21?6:,7&+,13876setpoints.

will appear on the display and the previous set-

f) THERMISTOR INPUT (21/22)

A motor can be equipped with a single thermistor in the end turns or three in the stator windings for overtemperature detection. Either positive thermal coefficient (PTC) or negative thermal coefficient (NTC) type thermistors may be direct ly connected t o the 239. P TC ther mistors ar e preferred bec ause 3 thermistors can be connected in series to monitor each of the stator phases. This is not possible with NTC thermistors because all three thermistors m ust be hot to obtain an indication. Select ther- mistors that have a resistance between 100 to 30 000 Ω at the intended alarm/trip temperature. Either linear thermistors or those with a sharp change in resistance at the required temperature can be used. If no thermistor sensing is required, these terminals can be left disconnected and the ther- mistor feature programmed OFF.

GE Multilin 239 Motor Protection Relay 2-9

Page 26

2 INSTALLATION 2 INSTALLATION

g) RTDS (OPTION) (48-57)

Up to 3 resistance temperature detectors (RTDs) must be supplied with the motor to use this option. Verify that the RTD option is installed by noting that the product identification label on back of the relay includes -RTD in the order code. When ordering a motor with RTDs, the 100 Ω platinum DIN 43730 type is the preferred choice for optimum sensitivity and linearity. Other RTDs that can be selected and used with the 239 are 100 Ω nickel, 120 Ω nickel and 10 Ω copper. RTDs do not have to be the same type, however the 239 must be programmed correctly so that each RTD input

matches the installed type. The factory default is 100 Ω platinum. RTDs are placed in the stator slots and/or motor bearings to provide the requir ed sensing signals to the 239 relay.

Up to 3 resistance temperat ure de tector s (RTDs) may be used for motor stator and bearing tempera- ture monitoring. Since an RTD indicates tem perature by the value of its resistance, it is necessary to compensate for the resistance of the connecting wires, which is dependent on lead length and ambi- ent temperature. The 239 uses a lead compensation circuit to cancel this lead resistance and read only the actual RTD resistance. Correct operation will occur providing all three wires are of the same

length and the resistance of each lead is not greater than 25% of the RTD 0°C resistance (see Sec- tion 1.4: SPECIFICATIONS on page 1–7). Th is can be ac complishe d by u sing i denti cal l engths of the same type of wire. Each RT D COM terminal is int er nally c onnected t o the safety gr ound, termin al 13 . Consequently, where code permits, the 3 RTD ter minals s hould not be grounded a t the mot or e nd for the lead resistance compensation to work correctly. If 10 Ω copper RTDs are used, special care should be taken t o keep t he lead res ist a nce as l ow as possibl e. I f no RTD sensor is installed, the cor- responding terminals may be left unconnected and the RTD programmed as OFF.

Shielded, three wire cable must be used in industrial environments to prevent noise pickup. Wher- ever possible, the RTD leads should be kept close to grounded metal casings and avoid areas of high electromagnetic or radio frequency fields. RTD leads should not run adjacent to, or in the same conduit as high current carrying wires. Use either multiconductor shielded cable for all 3 RTDs or separate three wire shi elded cab le o f #18 AWG copper conductors for each RTD. The 239 shie ld ter - minal (48) and each RTD COM (51,54,57) are internally connected to safety ground, terminal 13. The shield connection of the RTD cable should not be grounded at both ends. This arrangement pre - vents noise pickup that could otherwise occur from circulat ing currents due to differences in ground potentials on a doubly grounded shield.

RELAY

SAFETY GROUND

SHIELD

HOT

COMP

RTD #1

RTD SENSING

RET

239

MOTOR

STARTER

3 WIRE SHIELDED CABLE

Route cable in separate conduit from current carrying conductors

RTD TERMINALS AT MOTOR

MOTOR

RTD IN MOTOR STATOR OR BEARING

OPTIONAL GROUND Shield and RTD com are internally connected to safety ground terminal 13

2-10 239 Motor Protection Relay GE Multilin

RTD TERMINALS IN MOTOR STARTER

Maximum total lead resistance 25 ohms (Platinum & Nickel RTDs) 3 ohms (Copper RTDs)

Figure 2–6: RTD WIRING

819781AA.CDR

Page 27

2 INSTALLATION 2 INSTALLATION

h) ANALOG OUTPUT (OPTION) (18/19/20)

Terminals 18-20 of the 239 are available for a single analog current output of one parameter. Verify that the Analog Output option is installed by noting that the product identification label on back of the relay includes -AN in the order code. The choice of output and current range is selected in

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. Use the TYPE message to select one of the fol-

6

lowing for output: phase CT (secondary) amps, % motor full load current (FLC), thermal capacity used (100% = motor tripped), RTD1 temperature, RTD2 temperature, or RTD3 temperature. The RANGE message selects the output current as: 0-1 mA, 0-20 mA or 4-20 mA. Range assignment is

shown below in Table 2–4: ANALOG OUTPUT RANGE ASSIGNMENT.

Table 2–4: ANALOG OUTPUT RANGE ASSIGNMENT

PROGRAMMED RANGE

SELECTED OUTPUT

Average Phase Current 0 A 1A/5A* 0 A 1A/5A* 0A 1A/5A* Motor Full Load% 0%200%0%200%0%200% Thermal Capaci ty 0% 100% 0% 100% 0% 100% RTD 1-3 Temperature 0°C180°C0°C180°C0°C180°C Forced Output 0% 100% 0% 100% 0% 100%

* 1 Amp CT secondary = 1 A, 5 Amp CT secondary = 5 A

0-1 mA 0-20 mA 4-20 mA

0 mA 1 mA 0 mA 20 mA 4 mA 20 mA

This output is a cur rent s ourc e suitable for connection to a remote meter, chart recorder , progr amma- ble controller, or computer load. Use the 4-20 mA with a programmable controller that has a current input. If only a voltage input is available use a scaling resistor at the PLC terminals to scale the cur- rent to the equivalent voltage and select the 0 to 20 mA output. For example, install a 500 Ω resistor across the terminals of a 0 to 10 V input to make the 0 to 20 mA output correspond to 0 to 10V (R = V/I = 10 V / 0.02 A = 500 Ω). When the GE Multilin TCS2 thermal capacity meter is connected to the terminals, select the 0 to 1 mA range. Current levels are not affected by the total lead and loa d resis- tance which must not exceed 600 Ω for 0-20 mA and 4-20mA range and 2400 Ω for 0-1mA range. For readings greater than full scale the output will saturate at 21 mA (0-20/4-20 range) or 1.1 mA (0- 1 range). This analog output is isolated. Since both output terminals 18 and 19 are floating, the con- nection of the analog output to a process input will not introduce a ground loop. Part of the system should be grounded for safety, typically at the programmable controller. For floating loads, such as a meter , ground terminal 19 ext ernally. Terminal 20 is internally grounded and may be used as a shield ground if required. Ground the shield at one end only to prevent ground loop noise.

i) SERIAL PORT (15/16/17)

A serial port provides communication capabilities between the 239 and a remote computer, PLC or distributed control system (DCS). Up to thirty-two 239 relays can be daisy chained together with 24 AWG stranded, shielded, twisted pair wire on a single communication channel. Suitable wire should have a characteristic impedance of 120 Ω such as Belden #9841. These wires should be routed away from high power AC lines and other sources of electrical noise. The total length of the commu- nications wiring should not exceed 4000 feet for reliable operation. Correct polarity is essential for the communications port to operat e. Terminal 15 (485 A+) of every 239 in a serial communication link must be connected together. Similarly, terminal 16 (485 B-) of every 239 must also be connected together. These polarities are specified for a 0 logic and should match the polarity of the master

GE Multilin 239 Motor Protection Relay 2-11

Page 28

2 INSTALLATION 2 INSTALLATION

device. When the communications link is active, the front panel &20081,&$7( light will be solid if valid data and relay address are being received. If the front panel indicate invalid data, try reversing the wires to terminals 15 and 16. Each relay must be daisy

chained to the next one as shown in Figure 2–7: RS485 COMMUN ICATION WIRING on page 2–12. Avoid star or stub connected configurations. If a large difference in ground potentials exists, commu- nication on the serial communication link will not be possible. Therefore, it is imperative that the serial master and 239 are both at the same ground potential. This is accomplished by joining 485

ground terminal 17 of every unit together and grounding it at the master only. The last 239 in the chain and the master computer need a terminating resistor and terminating

capacitor to prevent co mmunicatio n erro rs by ensuri ng proper elec trica l match ing of the loa ds. Using terminating resistors on all the 239s would load down the communication network while omitting them at the ends could cause refl ections resul ting i n garbl ed dat a. Inst all t he 120 Ω / ¼ watt term inat - ing resistors and 1 nF capacitor externally. Although any standard resistor or capacitor of these val- ues are suitable, these components can also be ordered from GE Multilin as a combined terminating network.

Each communication link must have only one computer (PLC or DCS) issuing commands called the master. The master should be centrally located and can be used to view actual values and setpoints from each 239 relay called the slave device. Other GE Mult ili n relays or devi ces that use t he Modbus RTU protocol can be connected to the communication link. Setpoints in each slave can also be changed from the master. Each 239 in the communication link must be programmed with a different slave address prior to runni ng communicat ions using 239PC, a communications software package developed by GE Multilin, may be used on a PC to view motor status, actual values, and view and alter setpoints.

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&20081,&$7( light flashes to

Figure 2–7: RS485 COMMUNICATION WIRING

2-12 239 Motor Protection Relay GE Multilin

Page 29

2 INSTALLATION 2 INSTALLATION

j) GROUNDING

• SAFETY GROUND (13): Connect the safety ground terminal 13 to a reliable system ground

within the starter using heavy gaug e wir e. For saf ety, all metal parts within the 239 are connected to this ground terminal. Shield terminals 20/48 and RTD COM terminals 51/54/57 are internally connected to the safety ground, terminal 13.

• FILTER GROUND (14): Using #12 gauge wire or ground braid, connect this terminal to a solid

system ground, typically a copper bus in the starter. Extensive filtering and transient protection is built into the 239 to ensure reliable operation under harsh industrial operating environments. Transient energy must be conducted back to the source through filter ground terminal 14. The fil- ter ground terminal is separated from the safety ground terminal to allow dielectric testing of a starter with a 239 wired up.

When properly installed, the 239 will meet the interference immunity requirements of IEC 801 and ANSI C37.90.

2.4 DIELECTRIC STRENG TH TESTING

It may be required to test a complete m otor starter for dielectric strength with the 239 installed. This is also known as "flash" or "hipot" testing. The 239 is rated for 1530 V AC isolation for 1 minute (or 1836 V AC for 1 second) between relay contacts, CT inputs, control power inputs and safety ground terminal 13. Some precautions are necessary to prevent damage to the 239 during these tests.

Filter networks and transient protection clamps are used between the control power, serial port, switch inputs, analog output, thermistor, RTDs inputs and the filter ground terminal 14 to filter out high voltage transients, radio frequency interference (RFI) and electromagnetic interference (EMI). The filter capacitors and transient absorbers could be damaged by the continuous high voltages rel- ative to ground that are applied during dielectric strength testing. Disconnect the filter ground termi- nal 14 during testing of the control power inputs. Relay contact and CT terminals do not require any special precautions. Do not dielectric strength test the serial port, thermistor, RTD or analog

output terminals else the 239 internal circuitry will be damaged.

GE Multilin 239 Motor Protection Relay 2-13

Page 30

2 INSTALLATION 2 INSTALLATION

Figure 2–8: DIELECTRIC STRENGTH TESTING

2-14 239 Motor Protection Relay GE Multilin

Page 31

3 OPERATION 3 OPERATION

239 INSTRUCTION MANUAL 3 OPERATION 3.1 FRONT PANEL

The local operator interf ace for setpoint entry and monitoring of measured values is from the front panel, as shown in the figure below. Control keys are used to select the appropriate message for entering setpoints or displaying measured values. Alarm and status messages are automatically dis- played when required. Indicator LEDs provide important status information at all times.

239 Motor Protection Relay

DISPLAY

40 character illuminated display for all light conditions.

CAUSE OF LAST TRIP: MECHANICAL JAM

TRIP

ALARM

ACTUAL

SETPOINT

AUXILIARY

SERVICE

PICKUP

COMMUNICATE

MESSAGE

• Setpoints

• Actual values

• Status messages

• Fault conditions

STATUS INDICATORS

• Trip: Lit when the 239 detects a trip.

• Alarm: Lit when the 239 detects an alarm.

• Auxiliary: Lit when the auxiliary relay is operated.

• Service: Lit when the 239 detects an internal

• Pickup: Lit when motor full load or ground

• Communicate: Off if there is no communication at all,

fault condition.

pickup

is exceeded.

flashes if RS485 activity but invalid messages, and on (steady) if communication is successful.

STORE

RESET

VALUE

KEYPAD

Rubber keypad makes installed unit dust tight and splash proof. Meets IP53/NEMA12.

PROTECTIVE DOOR

Covers keys when not in use.

819790AH-X5.CDR

Figure 3–1: FRONT PANEL

GE Multilin 239 Motor Protection Relay 3-1

Page 32

3 OPERATION 3 OPERATION

3.2 DISPLAY

819761A6.CDR

Figure 3–2: 239 DISPLAY

All messages are displayed in English on the 40-character LCD display, which is visibl e under varied

lighting conditions. While the keypad and display are not actively being used, the screen will display the default status message. This message will appear if no key has been pressed for the time pro- grammed in

6  6(783?35()(5(1&(6?'()$8/7 0(66$*( 7,0(. Trip and alarm condition messages

will automatically override default messages. To maximize the lifetime of the display, its brightness can be varied using the setpoint

6(783?35()(5(1&(6?'()$8/70(66$*(%5,*+71(66

. The display will adjust to set brightness level when

6 

the default messages are being displayed. If any one of keys on the 239 keypad is pressed or an alarm/trip is present the display brightness will automatically become 100%. If the default messages time is set to OFF, the 239 display will dim to the set brightness level after 5 minutes have elapsed since one of the keys on the keypad was last pressed.

NOTE: Message brightness control is available only on units with the VFD display.

3.3 STATUS INDICATORS

TRIP

AUXILIARY

SERVICEALARM

PICKUP

COMMUNICATE

819762A7.CDR

Figure 3–3: 239 STATUS INDICATORS

• TRIP: The

75,3 indicator flashes when the 239 has tri pped. This wi ll be caused by any tri p c ondi-

tion (overload, short circuit etc.) or a serial trip command issued via the communication port. The indicator and the trip relay are reset manually by pressing the key, remotely using a

RESET

computer reset command, or by closing the external reset input.

• ALARM: The will be on while the

$/$50 relay is intended for general purpose alarm output s. The $/$50 indicator

$/$50 relay is operating. If the $/$50 is programmed as unlatched, this

indicator will flash as long as the alarm condition persists. When the condition clears, the

$/$50 indicator will turn off. If th e alarm r elay has be en programmed as lat ched, t he alarm con -

dition can only be cleared by pressing the key, by issuing a computer reset command,

RESET

or by closing the external reset input.

• AUXILIARY: The

,$5<

indicator will turn on while the $8;,/,$5< relay is operating.

$8;, / , $ 5 < relay is intended for customer specific requirements. The $8;,/

3-2 239 Motor Protection Relay GE Multilin

Page 33

3 OPERATION 3 OPERATION

SETPOINT

• SERVICE: Any abnormal condition detected during 239 self-monitoring, such as a hardware fail-

ure, will cause the operated state is "Ener giz ed," oper ated s t ate is " De-ener gized" ). The on while the also causes the

6(59,&( relay to operate. This relay is programmed to be failsafe (i.e. non-

6(59,&( indicator will turn

6(59,&( relay is operating (i.e. de-energized). Loss of control power to the 239

6(59,&( relay to be de-energized, indicating that no protection is present.

• PICKUP: During testing, for calibration verification, it is useful to have an indication of when the

motor full load or ground trip pickup setting has been exceeded. Eventually an alarm or a trip will occur if these conditions persist. The indicator will remain flashing as long as the motor full load setting remains exceeded while the motor is running or ground current is above the ground trip pickup level. The indicator will automatically turn off when the phase current drops below the full load threshold and the ground current is below the trip pickup setting.

• COMMUNICATE: Status of the RS485 communication port is monitored with this indicator. If

there is no serial data being received via the rear serial port terminals the

&20081,&$7( indi-

cator will be off. This situation will occur if there is no connection, the serial wires have become disconnected or the master computer is inactive. If there is activity on the serial port but the 239 is not receiving valid messages f or it s intern all y progr ammed addres s the ind icator will flash. This could be caused by incorrect message format such as baud rate or framing, reversed polarity of the two RS485 twisted pair connections or the master not sending the cu rr ently pr ogrammed 239 address. If the 239 is being periodically addressed with a valid message, the

&20081,&$7(

indicator will be on continuously. If no valid message has been received for 10 seconds, the indi- cator will either flash (serial data present) or go off (no serial data).

3.4 KEYS

ACTUAL

MESSAGE

SETPOINT

STORE

VALUE

RESET

819764A4.CDR

Figure 3–4: FRONT PANEL KEYS

• SETPOINT: Setpoints are arranged into gro u ps of related messages called setpoint pages. Each

time the key is pressed, the display advances to the first message of the next page of setpoints. Pressing the display to the beginning of the next page. The and keys are used to move

SETPOINT

key while in the middle of a page of setpoints advances the

MESSAGE

▼

MESSAGE

▲

between messages within a page.

• ACTUAL: Measured values and collected data m essages are arranged into groups of related

messages called actual values pages. Each time the key is pressed, the display

ACTUAL

GE Multilin 239 Motor Protection Relay 3-3

Page 34

3 OPERATION 3 OPERATION

STORE

MESSAGE

▼

advances to the first message of the next page of actual values. Pressing the key while in the middle of a page of actual values advances the display to the beginning of the next page.

MESSAGE

The and

▲

MESSAGE

▼

keys are used to move between messages within a page.

• STORE: When programming setpoints, enter the new value using the followed by the key. Setpoint programming must be enabled for the key to

STORE STORE

store the edited value. An acknowledgment message will flash if the new setpoint is successfully saved in non-volatile memory. The key is also used to add and remove user defined

STORE

default messages. Refer to Section 3.6: DEFAULT MESSAGES on page 3–6 for further details.

• RESET:. After a trip the indicator. The key will clear the trip indicator and the active trip message if the cause of

RESET

75,3 indicator will be flashing. Press the key to clear the trip

the trip is no longer present. If the trip condi tion is still present, one of foll owing two messages will

flash to indicate that reset is not possible.

RESET NOT POSSIBLE

OVERLOAD LOCKOUT

RESET NOT POSSIBLE

FAULT STILL PRESENT

The key, along with the key, is also used to remove user defined default mes-

RESET

Displayed when overload trip lockout condition is present.

Displayed when a trip co ndition other than an over load trip lockout is present.

sages. Refer to Section 3.6: DEFAULT MESSAGES on page 3–6 for further detai ls.

RESET

VALUE

▼

ACTU AL

VALUE

▲

keys,

• MESSAGE UP/DOWN/LEFT/RIGHT: To move between message groups within a page use the

MESSAGE

▲

MESSAGE

/ keys. The key moves toward the end of the page and the

▼

key moves toward the beginning of the page. A page header message will appear at the beginning of each page and a page footer message will appear at the end of each page. To select messages within a subgroup press . To back out of the subgroup or access the previous message, press .

MESSAGE

3-4 239 Motor Protection Relay GE Multilin

Page 35

3 OPERATION 3 OPERATION

VALUE

▲

MOVES TO PREVIOUS

SUBGROUP

MESSAGE

MOVES

TO NEXT

SUBGROUP

SETPOINT

]] SETPOINTS ]] S1 239 SETUP

MESSAGE

▲

▼

] PREFERENCES ]

MESSAGE

▲

▼

] ANALOG OUTPUT ]

MESSAGE

SETPOINT

]] SETPOINTS ]] S2 SYSTEM SETUP

MOVES BACK

WITHIN SUBGROUP

TEMPERATURE DISPLAY IN: CELSIUS

DEFAULT MESSAGE TIME

1.0 MINUTES DEFAULT MESSAGE

BRIGHTNESS: 60%

BLOCK KEYPAD TRIP RESET: NO

ANALOG OUTPUT TYPE: MOTOR LOAD

M E S S A G E

MOVES FORWARD

WITHIN SUBGROUP

ANALOG OUTPUT RANGE:

0–1 mA

SERIAL COMMS FAILURE ALARM: OFF

SLAVE ADDRESS:

BAUD RATE:

MESSAGE

▲

▼

] RS485 SERIAL PORT ]

MESSAGE

▲

MESSAGE

9600 BAUD

MESSAGE

▼

MSGKEYOP.VSD

Figure 3–5: MESSAGE KEY OPERATION

VALUE

▼

VALUE

• V ALUE UP/DOWN: Setpoint va lues are entered us ing the point is displayed calling for a yes/no response, each ti me or is pressed, the

VALUE

▼

▲

keys. When a set-

VALUE

▲

"Yes" becomes a "No," or the "No" becomes a "Yes." Similarly, for multiple choice selections,

VALUE

each time or is pressed the next choice is displayed. When numeric values

▼

GE Multilin 239 Motor Protection Relay 3-5

Page 36

3 OPERATION 3 OPERATION

SETPOINT

MESSAGE

▲

VALUE

are displayed, each time is pressed, the value increases by the step increment, up to

▲

the maximum. Hold the key down to rapidly change the value.

• KEYP AD ENTR Y: Press the

SETPOINT

the key several times to move to the top of successive pages. A header message with

key once and the first p age of set point s is displ ayed. Pr ess

two bars in the first two character positions is the start of a new page. The page number and page title appear on the second line. All setpoint page headers are numbered with an ‘S’ prefix. Actual value page headers are numbered with an ‘A’ prefix.

]] ]]

] ]

| |

PAGE HEADER MESSAGE

The messages are organized into logical subgroups within each Setpoints and Actual Values page as shown above.

Press the

MESSAGE

subgroup. Otherwise select the / keys to display the next subgroup.

• COMPUTER ENTRY: When using a computer running 239PC software, setpoint values are grouped together on a screen. The data is organized in a system of menus. See Chapter 6: 239PC SOFTWARE for further details.

• SCADA ENTRY: Details of the complete communication protocol for reading and writing set- points are given in Chapter 7: COMMUNICATIONS. A SCADA system connected to the RS485 terminals can be customer programmed to make use of any of t he communica tion commands fo r remote setpoint programming, monitoring and control.

Hardware security is designed into the relay to provide protection against unauthorized setpoint changes. To program new setpoints using the front panel keys a hardware jumper must be installed across the setpoint access terminals on the back of the relay. These terminals can be permanently wired to a panel mounted keyswitch if this is more convenient. Attempts to enter a new setpoint with- out the electrical connection across the setpoint access terminals will result in an ‘ILLEGAL ACCESS’ error message. When setpoint programming is via a computer connected to the rear RS485 communication port, no setpoint access jumper is required. If a SCADA system is used for relay programming, it is up to the programmer to design in appropriate passcode security.

SUBGROUP HEADER MESSAGE

MESSAGE

key when displaying a subgroup to access messages within that

MESSAGE

SUB-SUBGROUP HEADER MESSAGE

▼

MESSAGE WITHIN SUB- SUBGROUP OR SUBGROUP

3.5 SETPOINT ACCESS

Up to 5 default messages can be selected to automatically scan sequentially when the 239 is left unattended. If no keys are pressed for the default message time set with

(1&(6?'()$8/70(66$*(7,0(

then the currently displayed message will automatically be overwritten by the first default message. After 5 seconds, the next default message in the sequence will display if more than one is selected. Trip, Alarm and flash messages will override the default message dis- play. Any setpoint or measured value can be selected as a default message.

Messages are displayed in the order they are selected.

3-6 239 Motor Protection Relay GE Multilin

3.6 DEFAULT MESSAGES

6 6(783?35()(5

Page 37

3 OPERATION 3 OPERATION

• ADDING NEW DEFAULT MESSAGE: use the / keys to display any setpoint

MESSAGE

▲

MESSAGE

▼

or actual value message to be added to the default message queue and follow the steps shown below . When sele cting a setpoint message for displ ay as a default , do not modif y the value using

VALUE

▼

VALUE

the

▲

keys or the 239 will recognize the key as storing a setpoint

STORE

instead of selecting a default message

STORE

MOTOR LOAD = 70% FULL LOAD

ACTUAL VALUE OR SETPOINT TO BE STORED AS DEFAULT MESSAGE

STORE

TO ADD THIS DEFAULT

MESSAGE PRESS STORE

DISPLAYED FOR 3 SECONDS WHEN STORE KEY PRESSED TWICE

STORE

NEW DEFAULT MESSAGE

SELECTED

DISPLAYED FOR 3 SECONDS WHEN STORE KEY PRESSED

ADEFMSG.VSD

If 5 default messages are already selected the first message is erased and the new message is added to the end of the queue.

MESSAGE

▲

MESSAGE

• DELETING A DEFAULT MESSAGE: Use the / keys to display the default

▼

message to be erased. If default messages are not known, wait until the 239 starts to display them and then write them down. If no default messages have been programmed, the 239 will remain on the current message and the display will dim to the level assigned in setpoint

6(783?35()(5(1&(6?'()$8/70( 66$*( %5,*+71(66 (5(1&(6?'()$8/70(66$*(7,0(

has expired. Use the / keys to display the set-

after the delay assigned in 6 6(783?35()

MESSAGE

▲

MESSAGE

▼

6

point or actual value message to be deleted from the default message queue and follow the steps shown below.

MOTOR LOAD = 70% FULL LOAD

ACTUAL VALUE OR SETPOINT TO BE REMOVED FROM THE DEFAULT MESSAGE QUEUE

STORE

RESET

VALID DEFAULT

MESSAGE

NOT A DEFAULT

MESSAGE

TO DELETE THIS

MESSAGE PRESS STORE

DISPLAYED FOR 3 SECONDS WHEN STORE KEY AND RESET KEY ARE PRESSED IN SEQENCE

NOT A SELECTED

DEFAULT MESSAGE

DISPLAYED FOR 3 SECONDS WHEN STORE KEY AND RESET KEY ARE PRESSED IN SEQENCE

STORE

DEFAULT MESSAGE

REMOVED

DISPLAYED FOR 3 SECONDS WHEN STORE KEY PRESSED

REDEFMSG.VSD

Each 239 is pre-programmed with five default messages as shown below. Note, each time the fac- tory setpoints are reloaded the user programmed default messages are overwritten with these mes- sages.

GE Multilin 239 Motor Protection Relay 3-7

Page 38

3 OPERATION 3 OPERATION

The 239 will scroll through the default messages in t he sequence shown.

SYSTEM STATUS NORMAL

A= 100 B= 100 C= 100 AMPS

CURRENT UNBALANCE U/B = 0 %

THERMAL CAPACITY USED = 0 %

PHONE: 905-294-6222 GEindustrial.com/pm

Location: ACTUAL VALUES A1 STATUS\GENERAL

Location: ACTUAL VALUES A2 METERING\CURRENT

Location: ACTUAL VALUES A2 METERING\MOTOR CAPACITY

Location: ACTUAL VALUES A1 STATUS\PROGRAMMABLE MESSAGE

Figure 3–6: DEFAULT MESSAGE SEQUENCE

3-8 239 Motor Protection Relay GE Multilin

Page 39

4 PROGRAMMING 4 PROGRAMMING

239 INSTRUCTION MANUAL 4 PROGRAMMING 4.1 SETPOINT ENTRY METHODS

Prior to operating the 239 relay, setpoints defining system characteristics and protection settings must be entered, via one of the following methods:

1. Front panel, using the keys and disp lay.

2. Rear terminal RS485 port and a computer running the 239PC communication program available from GE Multilin.

3. Rear terminal RS485 port and a SCADA system running user-written software.

Any of these methods can be used to enter the same information. However, a computer makes entry easier and files can be stored and downloaded for fast, error free entry. To facilitate this process, the 239PC programming software is avail able from GE Multilin. With this program installed on a portable computer, all setpoints can be downloaded to the 239.

Setpoint messages are organized into logical groups or pages for easy reference. Setpoint mes- sages are described individually and a reference of all messages is also provided at the end of the chapter. Messages may vary somewhat from those illustrated because of installed options. Also, some messages associated with dis abled features are hidden. This c ontext sensitive operation elim- inates confusing detail. Before attempting to start the protected motor, setpoints on each page should be worked through, entering values eit her by local keypad or computer.

The 239 relay leaves the factory with setpoints programmed to defaul t values. These values are shown in all the setpoint message illustrations. Many of these factory default values can be left unchanged. At

a minimum however, setpoints that are shown shaded on Figure 4–3: SETPOINTS PAGE 2 – SYS- TEM SETUP on page 4–9 must be entered for the system to function correctly. In order to safeguard against the installation of a relay whose setpoints have not been entered, the 239 will trip and lock out until the values have been entered for these setpoints. A warning message “CAUSE OF LAST TRIP: P ARAMETERS NOT SET” along with a trip condition is present until the 239 is programmed with these critical setpoints.

GE Multilin 239 Motor Protection Relay 4-1

Page 40

4 PROGRAMMING 4 PROGRAMMING

SETPOINT SETPOINT

]] SETPOINTS ]] S1 239 SETUP

MESSAGE

] PREFERENCES ]

] ANALOG OUTPUT ]

] RS485 SERIAL PORT ]

] DEFAULTS ]

] PROGRAMMABLE ] MESSAGE

] PRODUCT OPTIONS ]

]] SETPOINTS ]] S2 SYSTEM SETUP

▼

] CT INPUTS ]

] MOTOR DATA ]

MESSAGE

SETPOINT

]] SETPOINTS ]] S3 OUTPUT RELAYS

▼

] TRIP RELAY ]

] ALARM RELAY ]

] AUXILIARY RELAY ]

MESSAGE

SETPOINT

]] SETPOINTS ]] S4 PROTECTION

▼

] PHASE CURRENT ]

] GROUND CURRENT ]

] TEMPERATURE ]

] SWITCH INPUTS ]

MESSAGE

SETPOINT

]] SETPOINTS ]] S5 TESTING

▼

] TEST CONFIGURATION ]

] TEST RELAY & LEDS ]

] CURRENT SIMULATION ]

] ANALOG OUTPUT ] SIMULATION

] SWITCH INPUTS ] SIMULATION

] THERMISTOR ] SIMULATION

] RTD SIMULATION ]

]GE POWER MANAGEMENT ]USE ONLY

MESSAGE

▼

Figure 4–1: SETPOINT MESSAGE ORGANIZATION

4-2 239 Motor Protection Relay GE Multilin

Page 41

4 PROGRAMMING 4 PROGRAMMING

4.2 S1: 239 SETUP

Settings to configure the 239 are entered here. This includes user preferences, RS485 communica- tion port, loading of factory defaults, and user programmable messages.

SETPOINT

MESSAGE s

MESSAGE t

MESSAGE s

MESSAGE t

MESSAGE s

MESSAGE t

]] SETPOINTS ]] S1 239 SETUP

] PREFERENCES ]

MESSAGE s

] ANALOG OUTPUT ]

SETPOINT

MESSAGE 4

MESSAGE 3

MESSAGE 4

MESSAGE 3

MESSAGE 4

]] SETPOINTS ]] S2 SYSTEM SETUP

TEMPERATURE DISPLAY IN: CELSIUS

DEFAULT MESSAGE TIME

1.0 MINUTES

DEFAULT MESSAGE BRIGHTNESS: 60%

BLOCK KEYPAD TRIP RESET: NO

OVERLOAD PICKUP DISPLAY ENABLE: YES

ANALOG OUTPUT TYPE: MOTOR LOAD

ANALOG OUTPUT RANGE: 0-1 mA

Range: CELSIUS, FAHRENHEIT

Range: 0.1 to 5.0, OFF Step: 0.1 min.

Range: 0 to 100 Step: 20%

Range: YES, NO

Range : AVERAGE PHASE AMPS, MOTOR LOAD, THERMAL CAPACITY, RTD 1/2/3 TEMPERATURE

Range: 0-1 mA, 0-20 mA, 4-20 mA

] RS485 SERIAL PORT ]

MESSAGE s

MESSAGE t

] DEFAULTS LOAD FACTORY

MESSAGE s

MESSAGE t

SEE NEXT PAGE

MESSAGE 3

MESSAGE 4

MESSAGE 3

SERIAL COMMS FAILURE ALARM: OFF

SLAVE ADDRESS: 1

BAUD RATE: 9600 BAUD

PARITY: NONE

DEFAULTS? NO

CLEAR PRE-TRIP DATA: NO

CLEAR STATISTICS DATA: NO

DESIGNATES SETPOINTS THAT ARE ONLY VISIBLE IF RTD OPTION IS INSTALLED

Range: ON, OFF

Range: 1-255, Step 1

Range: 1200, 2400, 4800, 9600, 19200

Range: NONE, EVEN, ODD

Range: YES, NO

DESIGNATES SETPOINTS THAT ARE ONLY VISIBLE IF ANALOG OUTPUT OPTION IS INSTALLED

GE Multilin 239 Motor Protection Relay 4-3

Page 42

4 PROGRAMMING 4 PROGRAMMING

SEE PREVIOUS PAGE

MESSAGE 4

] PROGRAMMABLE ] MESSAGE

MESSAGE s

MESSAGE t

] PRODUCT OPTIONS ]

MESSAGE s

MESSAGE t

MESSAGE 3

MESSAGE 4

MESSAGE 3

Phone: (905) 294-6222 GEindustrial.com/pm

SELECT OPTIONS TO ENABLE: NONE

SELECT MOD 1 TO ENABLE: 0

SELECT MOD 2 TO ENABLE: 0

SELECT MOD 3 TO ENABLE: 0

SELECT MOD 4 TO ENABLE: 0

SELECT MOD 5 TO ENABLE: 0

ENTER PASSCODE:

Range: 40 Alphanumeric characters

Range: NONE, RTD, AN, RTD-AN

Range:0to999

Range: 0 to 999

Range:0to999

Range: 0 to 999

Passcode obtained from factory.

] END OF PAGE S1 ]

Figure 4–2: SETPOINTS PAGE 1 – 239 SETUP

a) PREFERENCES

• TEMPERATURE DISPLAY: Select whether temperatures should be displayed in degrees Cel- sius or Fahrenheit. Temperature units can be changed at any time.

• DEFAULT MESSAGE TIME: Up to 5 default messages can be selected to automatically scan sequentially when the 239 is left unattended. If no keys are pressed for the default message time set with this setpoint, then the currently displayed message will automatically be overwritten by the first default message. After 5 seconds, the next default message in the sequence will display if more than one is selected. Alarm and trip messages will over-ride default message display. Any setpoint or measured value can be selected as a default message. Refer to Section 3.6: DEFAULT MESSAGES on page 3–6 for information on removing and adding new default mes- sages.

Default messages can be disabled by setting this setpoi nt to

2)). When this setpoint is turned off,

the currently displayed message will remain displayed until a condition such as a trip alarm, or key press forces the 239 to display a different message.

4-4 239 Motor Protection Relay GE Multilin

Page 43

4 PROGRAMMING 4 PROGRAMMING

• DEFAULT MESSAGE BRIGHTNESS: The brightness of the displayed messages can be varied

with this setpoint. The brightness set by thi s setpoi nt will be used when the defaul t messages are being displayed. The brightness defaults back to 100% when:

• trip is present

• alarm is present

• any one of the keys on the 239 keypad is pressed

• the 239 is turned off and on

When

6 6(783?3 5()(5(1&(6?'()$8/7 0(66$*( 7,0( is set to 2)), the brightness will adjust to

set level after 5 minutes have elapsed since the 239 keys were last pressed. The 239 status must also be NORMAL to display the set brightness. If no default message is programmed, the display brightness will adjust to the set level after the programmed time in message

6(783?35()(5(1&(6?'()$8/70(66$*(7,0(

has elapsed.

6 

NOTE: Message brightness control is available only with the VFD display option.

• BLOCK KEYPAD TRIP RESETS: This feature blocks any attempts made to reset the present

trip using the pressing the

RESET

This feature is applicable to trips only. The function of the key in other areas (i.e. reset

key on the 239 keypad. When this feature is enabled and a trip is present,

key will display the following flash message for 3 seconds.

RESET NOT POSSIBLE

KEYPAD RESET BLOCKED

RESET

alarms, remove default messages, etc.) is not affected.

• OVERLOAD PICKUP DISPLAY ENABLE: When an overload pickup has occurred, this setpoint

determines whether the 239 front display panel is automatical ly updated with the time to overl oad trip. When this setpoint is programmed to

12, an overload pickup will have no effect on the dis-

play. The pickup LED indicator and overload protection are not affected by this setpoint.

b) ANALOG OUTPUT

• ANALOG OUTPUT TYPE: If the relay is to be used in conjunction with programmable control-

lers, automated equipment, or a chart recorder the analog output can be used for continuous monitoring. Choose from one of the following parameters for output:

3+$6( $036

, 02725 /2$' (phase current as a percentage of full load), or 57' 7(03(5$785(.

7+(50$/&$3$&,7<, $9(5$*(

Although a single parameter can be selected for continuous analog output, all values are avail- able digitally through the communications interface. See Section 2.3h) ANALOG OUTPUT (OPTION) (18/19/20) on page 2–11 for a description of current output scaling. Applications include using a computer to automatically shed loads as the motor current increases by monitor- ing current as a percentage of full lo ad current or a cha rt recor der to pl ot the l oading of a mot or in a particular process.

• ANALOG OUTPUT RANGE: In processes where the motor loads are varied and operated at

near the motor full load such as in grinding or in conveyor systems it is useful to know how close the relay is to tripping so the load may be adjusted accordingly. The analog output can be con- nected to a remote meter, which is available and calibrated from 0 to 100% of motor capacity used. Select thermal capacity

0$

(0 mA = 0%, 1 mA = 100% i.e. motor tripped) for use with the 0-1 mA range meter model TCS2 scaled in units of thermal capacity used and available from GE Multilin. This meter would be situated near the operator and connected to the relay. The meter indicates how much the memory has charged corresponding to heat buildup in the motor. When the relay is about to trip, the meter will approach 100% capacity used. After a trip, the

GE Multilin 239 Motor Protection Relay 4-5

Page 44

4 PROGRAMMING 4 PROGRAMMING

meter will indicate how much charge is left in the memory to give a rough idea of the lockout time remaining. Alternately, this output can be programmed as

thermal capacity

0$ (4 mA = 0%,

20 mA = 100% i.e. motor tripped) and connected to a programmable controller or DCS as a sig- nal for process control. It might typically be used to reduce the feed on to a conveyor as the con- veyor motor thermal capacit y approached 100%.

c) RS485 SERIAL PORT

• SERIAL COMMS FAILURE ALARM: If loss o f communication s to the exter nal master i s requir ed to activate the alar m relay, select ON. In this case an absence of communication polling on the RS485 communication port for 60 seconds will generate the alarm condition. Disable this alarm output if communications is not used or is not considered crit ical.

• SLAVE ADDRESS : Enter a unique address from 1 to 255 for this particular relay on the RS485 communication link. This setpoint cannot be changed via the RS485 port. A message sent with address 0 is a broadcast message to which all relays will listen but not respond. Although addresses do not have to be sequential, no two relays can have the same address or there will be conflicts resulting in errors. Generally, each relay added to the link will use the next higher

address, starting from address 1.

• BAUD RATE: Enter the baud rate for the terminal RS485 communication port, which may be selected to one of

, , , , or  baud. All relays on the RS485 communication

link and the computer connecting them must run at the same baud rate. The fastest response will be obtained at 19200 baud. Slower baud rates should be used if noise becomes a problem. The data frame consists of 1 start bit, 8 data bits, 1 stop bit and a programmable parity bit, see

6(783?566(5,$/3257?3$5,7<

. The baud rate default setting is 9600 baud.

• PARITY: Enter the parity for the terminal RS485 communication port, which may be selected to one of

(9(1, 2'', or 121(. All relays on the RS485 communication link and the computer con-

necting them must have the same parity.

6

d) DEFAULTS

• LOAD FACTO RY DEFAULTS: When the 239 is shipped from the factory all setpoints will be set to factory default values. These setting s are shown in the setpoi nt message reference figures. To return a relay to these k nown setpoi nt s sel ect

<(6 and press the key while this message

STORE

is displayed and then momentarily remove power to the 239. It is a good idea to first load factory defaults when replacing a 239 to ensure all the setti ngs are defaulted to reasonable values.

• CLEAR PRE-TRIP DATA: When all of the pre-trip dat a in

$67 $786?/$6775,3'$7$ will be cleared and the following flash message

<(6 is selected in this setpoint and the key is pressed,

STORE

will be displayed for 3 seconds.

PRE-TRIP DATA

CLEARED

If the pre-data is cl eared while a trip is still present, all pre-data except for “CAUSE OF LAST TRIP” will be cleared.

• CLEAR STATISTICS DATA: Select

<(6 and press the key to clear all motor statistics,

STORE

motor maximum starting current, and running time.

4-6 239 Motor Protection Relay GE Multilin

Page 45

4 PROGRAMMING 4 PROGRAMMING

e) PROGRAMMABLE MESSAGE

• PROGRAMMABLE MESSAGE: A 40-character message can be programmed using the key-

pad, or via the serial port using the 239PC software. Using the 239 keypad, a new message can be written over the existing message as shown below.

VALUE

MESSAGE

STORE

] PROGRAMMABLE ] MESSAGE

Phone: 905-294-6222 GEindustrial.com/pm

VALUE

TIPS:

• The setpoint access jumper must be installed in order to alter the characters.

• To skip over a character press the key.

• If a character is entered incorrectly, press the key repeatedly until the cursor returns to the position of the error, and re-enter the character.

• To select this message as a default message, see Section 3.6: DEFAULT MESSAGES on page 3–6.

• A copy of this message is also displayed in Actual Values page A1 under

0(66$*(

Phone: 905-294-6222 GEindustrial.com/pm

STORE

NEW SETPOINT

STORED

DISPLAYED FOR 3 SECONDS

WHEN STORE KEY IS PRESSED

STORE

NEW SETPOINT

STORED

DISPLAYED FOR 3 SECONDS

WHEN STORE KEY IS PRESSED

CONTINUE TO ENTER THE REMAINING CHARACTERS

352*5$00$%/(

f) PRODUCT OPTIONS

• SELECT OPTIONS TO ENABLE: The 239 factory options can be updated in the field. Enter the new desired options for the 239.

• SELECT MOD 1 TO ENABLE: Enter the desired mod. If no MOD is to be enabled enter zero (0).

• SELECT MOD 2 TO ENABLE: Enter the desired mod. If no MOD is t o be enabled ent er z ero (0) .

• SELECT MOD 3 TO ENABLE: Enter the desired mod. If no MOD is t o be enabled ent er z ero (0) .

• SELECT MOD 4 TO ENABLE: Enter the desired mod. If no MOD is t o be enabled ent er z ero (0) .

• SELECT MOD 5 TO ENABLE: Enter the desired mod. If no MOD is t o be enabled ent er z ero (0) .

• ENTER PASSCO DE: To enter a passcode through the keypad use the value up and/or value down keys. When the appropriate character is reached press the message right key to move to the next character to be entered. If a character was entered incorrectly use the message left or

GE Multilin 239 Motor Protection Relay 4-7

Page 46

4 PROGRAMMING 4 PROGRAMMING

right keys to the position the cursor at the error location. Use the value up or down keys to select the correct character.

When the entire passcode has been entered correctly press the store key. The 239 will then wait 2 seconds before resetting. See flow diagram below.

NOTE: Passcodes are obtained by contacting the factory. There will be a charge

which is dependant on the options/Mods to be installed. Desired Mods are limited to firmware Mods, no hardware Mods are supported with this feature. The firmware version of the 239 defines what firmware Mods can be enabled.

EXAMPLE: The original 239 was ordered with the AN option. After receiving the unit, require- ments have changed for the 239, and the RTD option is now required.

Step 1: To add the RTD option to the 239 while keeping the AN option enter

6(/(&7237,21672(1$%/( setpoint.

Step 2: If no Mods are to be enabled, leave zeros in the

6(/(&702';72(1$%/( setpoints.

57'$1 in the

Step 3: With the unit serial number and the unit options required call the factory to obtain

the passcode. Enter the passcode and press . After a 2 second delay the

STORE

239 will reset and the desired options will now be present.

Step 4: Verify correct options were installed:

ORDER CODE: 239-RTD-AN

Located in ACTUAL VALUES page A3 under the sub-heading MODEL INFORMATION

Step 5: Verify correct MODs were installed:

MOD NUMBER(S): 0

Located in ACTUAL VALUES page A3 under the sub-heading MODEL INFORMATION

Step 6: Proceed wit h 239 setup.

4-8 239 Motor Protection Relay GE Multilin

Page 47

4 PROGRAMMING 4 PROGRAMMING

4.3 S2: SYSTEM SETUP

SETPOINT

]] SETPOINTS ]] S2 SYSTEM SETUP

MESSAGE

▲

▼

] CT INPUTS ]

MESSAGE

▲

▼

] MOTOR DATA ]

MESSAGE

▲

▼

SETPOINT

MESSAGE

]] SETPOINTS ]] S3 OUTPUT RELAYS

PHASE CT PRIMARY: OFF A

GROUND SENSING:

OFF

GROUND CT PRIMARY : 100 A

NOMINAL FREQUENCY: 60 Hz

MOTOR FULL LOAD CURRENT: OFF

OVERLOAD PICKUP

INHIBIT

USE OVERLOAD PICKUP INHIBIT ON: RUN

LOCKED ROTOR CURRENT: 6.0 x FLC

SAFE STALL TIME COLD: 10.0 s

≤

1.00 x FLC

HOT/COLD CURVE RATIO: 85%

DISABLE STARTS: NO

Range: 5 to 1500, OFF Step: 5 A

Range: RESIDUAL, CORE BAL 50:0.025, COR BAL X:5, OFF

Range: 5 to 1500 Step: 5 A

Range: 50, 60

Range: 1 to 1500, OFF; Step 1 (C T P RI SET > 50 A) Range: 0.1 to 150.0, OFF; St ep 0. 1 (CT PRI SET

Range: 1.00 to 5.00; Step 0.05

Range: RUN, START, START & RUN

Range: 0.5 to 11.0; Step 0.1 x FLC

Range: 1.0 to 600.0; Step 0.1 s

Range: 5 to 100%; Step 1%

Range: NO, YES

≤

50A)

] END OF PAGE S2 ]

Figure 4–3: SETPOINTS PAGE 2 – SYSTEM SETUP

GE Multilin 239 Motor Protection Relay 4-9

DESIGNATES SETPOINTS THAT MUST BE PROGRAMMED BEFORE THE "TRIP" OUTPUT WILL RESET

Page 48

4 PROGRAMMING 4 PROGRAMMING

a) CT INPUTS

3+$6(&735,0$5<!$, the 239 shifts the 02725)8/ / /2$'&855(17 settings by a

factor of 10 to remove the extra decimal place (see Figure 4–3: SETPOINTS PAGE 2 – SYSTEM SETUP above). If changing the

NOTE

• PHASE CT PRIMARY: Enter the primary current rating of the phase current transformers. All three phase CTs must be of the same rating. For example if 500:5 CTs are used, the phase CT primary value entered should be 500. When the relay is shipped with factory defaults loaded, the phase CT ratio is set off . When off is the CT value, the 239 is forced to a tr ip stat e as a safet y pre- caution until a valid CT value is entered. Ensure that the CT is connected to the correct 1 A or 5 A terminals to match the CT secondary.

• GROUND SENSING: Ground sensing on solid or low resistance grounded systems is possible with residually connected phase CTs as shown in Figure 2–3: TYPICAL WIRING DIAGRAM on

page 2–4. If this connection is used enter residual. The ground CT primary will automatically be the same as the phase CTs. For more sensitive ground current detection a separate core bal- ance (zero sequence) CT which encircles all three phase conductors can be used. In this case select core balance 50:0.025. A GE Multilin 50:0.025 CT is available. If a conventional 5 A sec- ondary CT is used to encircle the 3 phase conductors, enter core balance x:5. It is then neces- sary to specify the CT primary using the next message

• GROUND CT PRIMARY: This message will only be visible if the ground sensing in the previous message is selected as core balance x:5. Enter the CT primary current. For example, if a 50:5 CT is installed for ground sensing enter 50. One amp CTs can also be used for ground sensing. In this case enter the CT primary value multiplied by 5. For example, if a 100:1 ground CT is installed and the ground sensing is selected as core balance x:5 enter 500 for the primary value.

• NOMINAL FREQUENCY: Enter the nominal system frequency as either 50 or 60 Hz. The 239 uses this information in the detection of Phase Short Circuit and Ground Fault T rips.

cross the 50 A value, the tor to restore the correct value. In previous firmware versions, crossing the 50 A value by changing the setting by a factor of 10 automatically, often without the operator’s knowledge.

02725)8// /2$'&855 (17 is reset to 0 A, forcing the opera-

3+$6(&735,0$5< setting changed the 02725) 8/// 2$' &855(17

3+$6( &7 35,0$5< setting causes it to

*5281'&735,0$5<.

b) MOTOR DATA

• MOTOR FULL LOAD CURRENT (FLC): Enter the full load amps from the motor nameplate. This is the maximum rated current at which the motor can operate without overheating. It is the

1.0× pickup point on the timed overcurrent characteristic. When the current exceeds this value, the timed overcurrent feature begins to time, eventually leading to a trip. Immediate overload warning and undercurrent setpoints are multiples of this value. Timed overcurrent is not active during motor starting.

• OVERLOAD PICKUP INHIBIT: Enter the overload pickup (service factor) specified on the motor nameplate if shown. Otherwise enter an overload pickup of 1.00. The pickup inhibit will operate during start and/or run depending upon the value programmed in the setpoint

3,&.83 ,1+,%,7 21

which the overload curves begin timing. If the overload pickup is 1.15 for exam ple, the overload curves will not begin to operate until the phase current reaches 1.15 × FLC. During a start,

67$// 7,0(

overload pickup inhibit setting. This setpoint acts as a lower cutoff for the overload pickup. The trip times are not shifted, but just

cut-off below the value specified by the overload pickup inhibit setting.

and /2&.(' 52725 &855(17 setpoints will not be used until the current reaches the

described below. During a running condition this value adjusts the pickup at

86( 29(5/2$'

6$)(

4-10 239 Motor Protection Relay GE Multilin

Page 49

4 PROGRAMMING 4 PROGRAMMING

• USE OVERLOAD PICKUP INHIBIT ON: This setpoint allows the overload pickup inhibit to be

applied during a START, RUN, or START & RUN condition.

• LOCKED ROTOR CURRENT AND SAFE STALL TIME COLD: During starting the locked rotor

current and safe stall time are used to determine how fast the thermal memory fills up. Timed overload curves are disabled. The st art time allowed depends on the actual start current.

Start Time Allowed SAFE STALL TIME COLD

LOCKED ROTOR CURRENT()

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

Actual Start Current()

For example, assuming the normal inrush current is 6 × FLC. If the actual current inrush current was only 5 × FLC on a start and the

6$)(67$//7,0(&2/' has been set to 20 seconds, the actual

maximum start time allowed would be:

LOCKED ROTOR CURRENT()

Start Time Allowed SAFE STALL TIME COLD

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

Actual Start Current()

20 6()

28.8 seconds

6$)(67$//7,0( and /2&.(' 52725 &855 (17 settings cannot be determined from the motor

If the

⁄()×

5()

nameplate, then use the above f o rmula to determine the allowed start time. A good rule of thumb is to set the

/2&.('52725 &855(17 to 6 × FLC and 6$)(67$//7,0( to the trip time for the speci-

fied timed overload curve at 6 × FLC.

• HOT/COLD CURVE RATIO: This feature determines thermal capacity used when the motor is

running at or below the full load current setpoint. The

+27&2/' &859( 5$7,2 setpoint is deter-

mined from the motor data using the Locked R otor Time Hot and Locked Rotor Time Cold speci- fications as shown below.

LRT Hot

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

HOT/COLD CURVE RATIO

LRT Cold

100×

where:

LRT Hot

= Locked Rotor Time Hot,

is defined as the locked rotor time when the motor has been running at FLC for a time sufficient for the motor temperature to reach a steady state value.

LRT Cold

= Locked Rotor Time Cold,

is defined as the locked rotor time when the motor has

been stopped for a time sufficient for the motor temperature to reach ambient.

LRT Hot and LRT Cold are usually determined from the motor specifications. If thi s information is not known, enter a typical value of 85% for the

+27&2/' &859( 5$7,2 setpoint is used by the 239 to thermally model the motor when the

The

+27&2/'&859(5$7,2.

average phase current is at or below the FLC setpoint. When the motor is cold (motor tempera- ture at ambient) the thermal capacity used will be 0%. When the motor is hot (motor running at FLC for a time sufficient to reach a steady state temperature) the thermal capacity used will be calculated as 100% –

+27&2/' &859( 5$7,2, or 100 – 85 = 15% using the example value given

GE Multilin 239 Motor Protection Relay 4-11

Page 50

4 PROGRAMMING 4 PROGRAMMING

above. In between these two extremes there is a linear relationship; the 239 thermal model cov-

ers the entire range of motor temperatures: cold—cool—warm—hot. The steady state value of thermal capacity used for any phase current level can be calculated as:

Actual Current

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

Thermal Capacity Used

For example, if LRT Hot = 7.0 s, LRT Cold = 10.0 s, FLC = 100 A, and the actual motor current is 80 A, then the steady state thermal capacity value will be:

Thermal Capacity Used

FLC Setpoint

Actual Current

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

FLC Setpoint

100% HOT/COLD CURVE RATIO

()×

100% HOT/COLD CURVE RATIO

()×

–

--------- -

100

20%

• DISABLE ST ARTS: In some applica tions start protection may not be required. Therefore, by set -

ting this setpoint to

<(6, the 239 will go directly into r un conditi on and ove rload cur ves will be employed to protect t he

connected load. This setpoint can also be used in conjunction with a switch input. If the

programmed to to

',6$%/(67$576, the 239 st ar t prot ect ion wi ll be defea ted if t he re specti ve swit ch input is cl osed .

The

',6$%/(67$576 setpoint must be programmed to <(6 for the feature to work via the switch

inputs.

<(6, the start protection on the 239 can be defeated. If the setpoint is set to

<(6 and 237,216:,7&+)81&7,21 setpoint described on page 4–33 is assigned



100%



7.0



-----------

–



10.0

100%×

',6$%/(67$576 setpoint is

4-12 239 Motor Protection Relay GE Multilin

Page 51

4 PROGRAMMING 4 PROGRAMMING

4.4 S3: OUTPUT RELAYS

SETPOINT

]] SETPOINTS ]] S3 OUTPUT RELAYS

MESSAGE

▲

▼

] TRIP RELAY ]

▲

▼

] ALARM RELAY ]

▲

▼

SETPOINT

MESSAGE

]] SETPOINTS ]] S4 PROTECTION

TRIP OPERATION: NON-FAILSAFE

ALARM OPERATION: NON-FAILSAFE

ALARM ACTIVATION: UNLATCHED

Range: NON-FAILSAFE, FAILSAFE

Range: LATCHED, UNLATCHED

] AUXILIARY RELAY ]

MESSAGE

▲

▼

] END OF PAGE S3 ]

NON-FAI LSAFE:

FAI LSAFE:

The relay coil is energized in its non-active state. Loss of control power will cause the relay to go into its active state; i.e. a failsafe alarm or trip relay will cause an alarm or trip on loss of control power . Contac t configurati on is opposite to that shown in Figure 2–3: TYPICAL WIRING DIAGRAM on page 2–4 for relays programmed as failsafe when control power is applied

Range: NON-FAILSAFE, FAILSAFE

Range: UNLATCHED, LATCHED

Range: NORMAL, TRIPS, ALARMS

MESSAGE

AUXILIARY OPERATION: NON-FAILSAFE

AUXILIARY ACTIVATION:

UNLATCHED

AUXILIARY FUNCTION: NORMAL

Figure 4–4: SETPOINTS PAGE 3 – OUTPUT RELAYS

The relay coil is not energized in its non-active state. Loss of control power will cause the relay to remain in the non-active state; i.e. a non-failsafe alarm or trip relay will not cause an alarm or trip on loss of control power. Contact configura-

tion is shown in Figure 2–3: TYPICAL WIRING DIAGRAM on page 2–4 with relays programmed non-failsaf e, control power not applied

GE Multilin 239 Motor Protection Relay 4-13

Page 52

4 PROGRAMMING 4 PROGRAMMING

RESET

a) TRIP RELAY

• TRIP OPERATION: Any trip condition will activate the trip relay. This relay can be programmed

121)$,/6$)( or )$, / 6 $ ) ( . After a trip, the relay trip state will remain latched until reset by

to be pressing the key, momentaril y closi ng the e xter nal r eset swi tch in put, or i ssuing a ser ial

RESET

port reset command. Where process continuity is more important than motor protection, the mode of operation can be

chosen as

121)$,/6$)( so the trip relay is normally de-energized for a non-trip condition and

energized for a trip. No trip occurs if control power to the 239 is lost but there will be no motor protection while this condition is present. Set the mode to

)$, /6 $) ( (the relay coil is normally

energized for a non-trip condition going non-energized for a trip) to cause a trip when control power to the 239 is not present to ensure continuous motor protection.

When the motor interrupting device is a breaker, the trip relay is usually programmed

and the trip contact wired in series with the breaker trip coil. Even though the trip contact is

6$)(

latched, the breaker 52 contact will normally be wired in series with the 239 trip contact so that the breaker 52 contact breaks the trip coil current as soon as the breaker opens. The 239 trip messages and records operate in the same way for contactors or breakers so the trip condition

must still be cleared using the key, momentarily closing the external reset terminals, or by sending the reset command via the computer.

b) ALARM RELAY

• ALARM OPERATION: Any alarm condition will activate the alarm relay. If an alarm is required when the 239 is not operational due to a loss of control power, select wise, choose

121)$,/6$)(.

)$,/6$)( operation. O ther-

• ALARM ACTIVATION: If an alarm indication is only required while an alarm is present, select

81/$7&+('. Once an alarm condition disappears, the alarm and associated message automati-

cally clear. To ensure all alarms are acknowledged, select

/$7&+('. Even if an alarm condition is

no longer present, the alarm relay and message can only be cleared by pressing the key, momentarily closing the external reset terminals, or by sending the reset command via the computer.

c) AUXILIARY RELAY

• AUXILIARY OPERATION: Any alarm, trip or auxiliary function can be programmed to activate the auxiliary relay. If an output is required when the 239 is not operational due to a loss of control power, select

)$,/6$ )( auxiliary operation, otherwise, choose 121)$,/6$)(.

• AUXILIARY ACTIVA TION: If an auxiliar y relay out put is onl y required while the alarm or auxi liar y function is present, select

81/$7&+('. Once an alarm or auxiliary function condition disappears,

the auxiliary relay returns to the non-active state and the associated message automatically clears. To ensure all alarms or auxiliary function conditions are acknowledged, select Even if an alarm or auxiliary function condition is no longer present, the auxiliary relay and mes- sage can only be cleared by pressing the key, momentarily closing the external reset

RESET

terminals, or by sending the reset command via the computer.

• AUXILIARY FUNCTION: If the auxiliary relay is required to be controlled by the function it’s assigned to then configure this setpoint to

1250$/. If the auxiliary relay is required to activate on

an occurrence of an alarm or trip condition and remain ener giz ed while the alarm or t rip condi tion is present then configure the setpoint to

$/$50 or 75,3 depending on the requirement.

121)$,/

RESET

/$7&+('.

4-14 239 Motor Protection Relay GE Multilin

Page 53

4 PROGRAMMING 4 PROGRAMMING

]] SETPOINTS ]] S4 PROTECTION

SETPOINT

] PHASE CURRENT ]

| OVERLOAD |

OVERLOAD CURVE NO:4

AT 2.00 x FLC, TRIP TIME = 116.6 s

OVERLOAD LOCKOUTTIME: 30 MIN

| PHASE S/C |

]] SETPOINTS ]] S5 TESTING

SETPOINT

Range: 1 to 15; Step 1

Range: 1.01 to 20.00 Step 0.01 x FLC

Range: 1 to 5000; Step: 1 min.

MESSAGE >

MESSAGE <

PHASE S/C TRIP: OFF

| IMMEDIATE OVERLOAD |

AUTO RESET O/L TRIPS ONCE TC ≤ 15%: NO

Range: OFF, TRIP, AUXILIARY, TRIP & AUXILIARY

Range: 1.0 to 11; Step: 0.1 x CT

Range: 10 to 60000, INST; Step: 10 ms

PHASE S/C PICKUP ≥ 10 x CT

PHASE S/C DELAY: INST ms

Range:YES, NO

IMMEDIATE OVERLOAD ALARM: OFF

IMMEDIATE OVERLOAD PICKUP ≥ 1.1 x FLC

INHIBIT ON START FOR: UNLIMITED s

Range: ON, OFF

Range: 0.5 to 11.0; Step 0.1 x FLC

Range: 0 to 6000, UNLIMITED Step: 1 s

SEE NEXT PAGESEE NEXT PAGE

MESSAGE s

MESSAGE t

MESSAGE s

MESSAGE t

MESSAGE s

MESSAGE t

MESSAGE s

MESSAGE t

MESSAGE s

MESSAGE t

4.5 S4: PROTECTION

GE Multilin 239 Motor Protection Relay 4-15

Page 54

4 PROGRAMMING 4 PROGRAMMING

SEE PREVIOUS PAGESEE PREVIOUS PAGE

| MECHANICAL JAM |

Range: OFF, TRIP, ALARM, AUXILIARY, TRIP&AUX

Range: 0.1 to 10.0 Step 0.1 x FLC

Range: 0 to 250; Step: 1 s.

Range: 0 to 6000, UNLIMITED Step: 1 s

MESSAGE

MECHANICAL JAM FUNCTION: OFF

MECHANICAL JAM PICKUP

▲

≥

2.0 x FLC

MECHANICAL JAM DELAY: 2 s

▼

INHIBIT ON START FOR: UNLIMITED s

MESSAGE

| UNDERCURRENT |

UNDERCURRENT FUNCTION: OFF

UNDERCURRENT

▲

▼

PICKUP

UNDERCURRENT DELAY: 2 s

| UNBALANCE |

PHASE UNBALANCE TRIP: ON

PHASE UNBALANCE TRIP PICKUP

PHASE UNBALANCE

▲

▼

TRIP DELAY: 2 s

PHASE UNBALANCE ALARM: ON

≤

50% FLC

≥

20 %

PHASE UNBALANCE ALARM PICKUP

≤

5 %

Range: OFF, ALARM, AUXILIARY, TRIP, ALARM & AUX, TRIP & AUX

Range: 5 to 100; Step: 1%

Range: 0 to 250; Step: 1 s.

Range: ON, OFF

Range: 5 to 100; Step: 1%

Range: 0 to 60; Step: 1 s

Range: ON, OFF

Range: 5 to 100 Step: 1%

MESSAGE

4-16 239 Motor Protection Relay GE Multilin

| HOT MOTOR |

▲ ▼

SEE NEXT PAGESEE NEXT PAGE

THERMAL CAPACITY USED ALARM

≥

OFF %

Range: 0 to 100; Step: 1%

Page 55

4 PROGRAMMING 4 PROGRAMMING

SEE PREVIOUS PAGESEE PREVIOUS PAGE

| BREAKER FAILURE |

Range: OFF, ALARM, AUXILIARY, ALARM & AUX

Range: 0.1 to 11.0 Step 0.1 x CT

Range: 10 to 60000, INST Step: 10 ms

MESSAGE

BREAKER FAILURE FUNCTION: OFF

BREAKER FAILURE PICKUP

▲

≥

5.0 x FLC

BREAKER FAIL PICKUP DELAY: 100 ms

▼

BREAKER FAIL DROPOUT DELAY: 100 ms

] GROUND CURRENT ]

MESSAGE

▲ ▼

] TEMPERATURE ]

MESSAGE

GROUND TRIP: TRIP

▲ ▼

| THERMISTOR |

▲

▼

Range: OFF, TRIP AUXILIARY, TRIP & AUXILIARY

GROUND PRIMARY TRIP PICKUP

≥

10.00 A

GROUND TRIP DELAY ON RUN: 500 ms

GROUND TRIP DELAY ON START: 500 ms

GROUND ALARM: MOMENTARY

GROUND PRIMARY ALARM PICKUP

GROUND ALARM DELAY ON RUN: 5.0 s

GROUND ALARM DELAY ON START: 5.0 s

THERMISTOR FUNCTION: OFF

THERMISTOR HOT RESISTANCE: 5.0 k

Ω

THERMISTOR COLD RESISTANCE: 0.3 k

Ω

THERMISTOR NOT CONNECTED ALARM: OFF

Range: 0.05 to 15 step 0.01A (GND PRI = 50:0.025); 3 to 100 step 1% (GND PRI = X:5; RESIDUAL)

Range: 10 to 60000, INST Step: 10 ms

Range: MOMENTARY, LATCHED, OFF

Range: Same as GROUND

≥

5.00 A

TRIP

Range: 0 to 60.0 Step: 0.1 s

Range: OFF, ALARM, TRIP, AUXILIARY, TRIP & AUXILIARY

Range: 0.1 to 30.0 Step: 0.1 k

Ω

Range: 0.1 to 30.0 Step: 0.1 k

Ω

Range: ON, OFF

GE Multilin 239 Motor Protection Relay 4-17

SEE NEXT PAGESEE NEXT PAGE

Page 56

4 PROGRAMMING 4 PROGRAMMING

SEE PREVIOUS PAGESEE PREVIOUS PAGE

| RTD 1 |

Range: STATOR, BEARING, OFF

Range: 100PT, 100NI, 120NI, 10CU

Range: 0 to 200°C, OFF; st ep 1°C

0 to 400°F , OFF; step 1°F

Range: 0 to 200°C, OFF; st ep 1°C

110 °C

Range: STATOR, BEARING, OFF

Range: 100PT, 100NI, 120NI, 10CU

Range: 0 to 200°C, OFF; st ep 1°C

0 to 400°F , OFF; step 1°F

Range: 0 to 200°C, OFF; st ep 1°C

75 °C

0 to 400°F , OFF; step 1°F

MESSAGE

▲ ▼

| RTD 2 |

▲

▼

RTD 1 APPLICATION: STATOR

RTD 1 TYPE: 100 PT

RTD 1 TRIP TEMPERATURE

RTD 1 ALARM TEMPERATURE

RTD 2 APPLICATION: STATOR

RTD 2 TYPE: 100 PT

RTD 2 TRIP TEMPERATURE

RTD 2 ALARM TEMPERATURE

≥

130 °C

≥

90 °C

≥

MESSAGE

SEE NEXT PAGESEE NEXT PAGE

| RTD 3 |

RTD 3 APPLICATION: BEARING

RTD 3 TYPE: 100 PT

RTD 3 TRIP

▲ ▼

TEMPERATURE

RTD 3 ALARM TEMPERATURE

| RTD SENSOR FAILURE |

RTD SENSOR FAILURE ALARM: OFF

▲ ▼

≥

90 °C

≥

Range: STATOR, BEARING, OFF

Range: 100PT, 100NI, 120NI, 10CU

Range: 0 to 200°C, OFF; st ep 1°C

0 to 400°F , OFF; step 1°F

Range: 0 to 200°C, OFF; st ep 1°C

75 °C

Range: ON, OFF

DESIGNATES SETPOINTS THAT ARE ONLY VISIBLE IF RTD OPTION IS INSTALLED

0 to 400°F , OFF; step 1°F

4-18 239 Motor Protection Relay GE Multilin

Page 57

4 PROGRAMMING 4 PROGRAMMING

SEE PREVIOUS PAGESEE PREVIOUS PAGE

] SWITCH INPUTS ]

MESSAGE

▲

▼

MESSAGE

| OPTION SWITCH 1 |

▲

▼

OPTION SW. 1 NAME: OPTION SWITCH 1

SWITCH 1 F UNCTION: OFF

TIME DELAY:

0.0 s 2nd PHASE CT

PRIMARY: 100 A

2nd MOTOR FULL LOAD CURRENT: 100 A

2nd OVERLOAD CURVE NO: 4

2nd PHASE S/C TRIP: OFF

2nd PHASE S/C PICKUP

2nd PHASE S/C DELAY: INST ms

≥

10 x CT

Range: 20 alphanumeric characters

Range: OFF, TRIP, ALARM, AUXILIARY, ALTERNATE SETPOINTS, DISABLE STARTS

Range: 0 to 60.0 step 0.1 s

Range 5 to 1500 step 5 A

Range: 1 to 1500 step 1 (4th CT PRIM set > 50 A); 0.1 to 150.0 step 0.1 (4th CT PRIM set

≤

50 A)

Range: 1 to 15 step 1

Range: OFF, TRIP, AUXILIARY, TRIP & AUXILIARY

Range: 1.0 to 11 Step: 0.1 x CT

Range: 10 to 60000, INST Step: 10 ms

GE Multilin 239 Motor Protection Relay 4-19

SEE NEXT PAGESEE NEXT PAGE

Page 58

4 PROGRAMMING 4 PROGRAMMING

SEE PREVIOUS PAGESEE PREVIOUS PAGE

| OPTION SWITCH 2 |

Range: 20 alphanumeric characters

Range: OFF, TRIP, ALARM, AUXILIARY, ALTERNATE SETPOINTS, DISABLE STARTS

Range: 0 to 60.0 step 0.1 s

Range: 5 to 1500 step 5 A

Range: 1 to 1500 step 1 (3rd CT PRIM set > 50 A)

Range: 1 to 15 step 1

Range: OFF, TRIP, AUXILIARY, TRIP & AUXILIARY

10 x CT

4th PHASE S/C TRIP: OFF

4th PHASE S/C

≥

PICKUP

10 x CT

4th PHASE S/C DELAY: INST ms

0.1 to 150.0 step 0.1 (3rd CT PRIM set

Range: 1.0 to 11, step 0.1 x CT

Range: 10 to 60000, INST Step: 10 ms

Range: 5 to 1500, OFF Step: 5 A

Range: 1 to 1500 step 1 (4th CT PRIM set > 50 A); 0.1 to 150.0 step 0.1 (4th CT PRIM set

≤

50 A)

Range: 1 to 15 step 1

Range: OFF, TRIP, AUXILIARY, TRIP & AUXILIARY

Range: 1.0 to 11 Step 0.1 x CT

Range: 10 to 60000, INST Step: 10 ms

≤

50 A)

MESSAGE

OPTION SW. 2 NAME: OPTION SWITCH 2

SWITCH 2 F UNCTION: OFF

TIME DELAY:

0.0 s 3rd PHASE CT

PRIMARY: 100 A

3rd MOTOR FULL LOAD CURRENT: 100 A

3rd OVERLOAD CURVE NO: 4

3rd PHASE S/C TRIP: OFF

▲

▼

3rd PHASE S/C PICKUP

≥

3rd PHASE S/C DELAY: INST ms

4th PHASE CT PRIMARY: OFF A

4th MOTOR FULL LOAD CURRENT: OFF A

4th OVERLOAD CURVE NO: 4

] END OF PAGE 4 ]

Figure 4–5: SETPOINTS PAGE 4 – PROTECTION

4-20 239 Motor Protection Relay GE Multilin

Page 59

4 PROGRAMMING 4 PROGRAMMING

a) OVERLOAD

• OVERLOAD CURVE: One of 15 different time/overload curves can be selected with the Phase Overload Curve number setpoint to closely match the thermal characteristics of the motor. Over lay motor curve data, if available, on the time overcurrent curves of Figure 4–6: PHASE TIMED OVERLOAD CURVES on page 4–22 and choose the curve that falls just below the motor dam- age curve.

I2t

Each of the curves represents an

characteristic of a motor. If no motor curve data is available, this setpoint can be set using the locked rotor time from the motor nameplate. Plot the point cor- responding to the rated locked rotor or stall time (vertical axis) at the rated locked rotor current (horizontal axis). For example, choose the point at 9 seconds and 6 × FLC for a motor with a locked rotor time of 9 seconds and a locked rotor current of 6 × FLC. If the stall time is specified at some other inrush current, the point can be plotted on the time/overload curves of Figure 4–6: PHASE TIMED OVERLOAD CURVES on page 4–22 and the next lowest curve selected. Curve points are also shown in tabular form in Table 4–2: 239 PHASE OVERLOAD TRIP TIMES (SEC- ONDS) on page 4–23. Points for a selected curve can be plotted directly on curves for associ- ated equipment to facilitate a coordination study. These points can also be entered into a computer co-ordination program to assist in curve selection.

The phase timed overload curve will come into effect when the motor current in any phase goes over the overload pickup × FLC level. During overload motor thermal capacity will increase accordingly until the trip rel ay is activated when 100% of the availabl e thermal capacity has been reached. After a trip, the thermal memory locks out a reset until the motor has cooled sufficiently (TC < 15%) to allow restarting.

• OVERLOAD TRIP TIME CALCULAT ION: This feature acts as a built-in calculator for a quick

VALUE

check of the expected trip time at all the selectable overload values. Using the

VALUE

▲

keys, scroll through the trip levels. As the trip level is being changed the trip time will

automatically be updated to correspond with the currently displayed value. When the

▼

STORE

key is pressed the currently displayed trip level is kept in the memory for future reference. The resolution of the displayed trip time is as shown in the table below.

Table 4–1: OVERLOAD TRIP TIME CALCULATION

TRIP TIME RANGE DISPLAY RESOLUTION

trip time < 100 seconds 0.01 x seconds trip time ≥ 100 second s and < 600 seconds 0.1 x seconds trip time ≥ 600 seconds and < 6000 se conds 1.0 x seconds trip time ≥ 6000 seconds 1.0 x minutes

• OVERLOAD LOCKOUT TIME: The motor cooling rate is control led by this setpoint. Enter a typi- cal time of 30 minutes to allow sufficient cooling. If process criteria requires shorter cooling peri- ods, particularly for small motors, a different time can be entered. Care should be exercised in selecting short lockout times since operators may restart a hot motor resulting in damage if too short a lockout time is chosen. Timed overload is not active during motor start. The locked rotor current and safe stall time are used to model thermal capacity effect during starting.

• AUTO RESET O/L TRIPS: When enabled, this feature will automatically reset overload trips once the thermal capacity (TC) decreases to 15% or less. All other types of trips are not affected by this feature.

GE Multilin 239 Motor Protection Relay 4-21

Page 60

4 PROGRAMMING 4 PROGRAMMING

100000

10000

1000

TRIP TIME

(seconds)

100

MULTIPLIER

15 12 9

3 2

0.1 1.0 10.0 100.0

Figure 4–6: PHASE TIMED OVERLOAD CURVES

4-22 239 Motor Protection Relay GE Multilin

CURRENT (I/Ipu)

Page 61

4 PROGRAMMING 4 PROGRAMMING

Tab le 4–2: 239 PHASE OVERL OAD TRI P TIMES (SECONDS )

CURVE

NUMBER

1 1437 854 416.7 70.0 29.2 16.7 10.9 5.8 3.64 2.50 1.39 0.88 0.73 2 2874 1707 833.4 140.0 58.3 33.3 21.9 11.7 7.29 5.00 2.78 1.77 1.46 3 4311 2561 1250.0 210.0 87.5 50.0 32.8 17.5 10.93 7.49 4.16 2.65 2.19 4 5748 3415 1666.7 280.0 116.6 66.6 43.7 23.3 14.57 9.99 5.55 3.53 2.91 5 7184 4269 2083.4 349.9 145.8 83.3 54.7 29.1 18.22 12.49 6.94 4.42 3.64 6 8621 5122 2500.1 419.9 174.9 100.0 65.6 35.0 21.86 14.99 8.33 5.30 4.37 7 10058 5976 2916.8 489.9 204.1 116.6 76.5 40.8 25.50 17.49 9.71 6.18 5.10 8 11495 6830 3333.5 559.9 233.3 133.3 87.5 46.6 29.15 19.98 11.10 7.06 5.83

9 12932 7683 3750.1 629.9 262.4 149.9 98.4 52.5 32.79 22.48 12.49 7.95 6.56 10 14369 8537 4166.8 699.9 291.6 166.6 109.3 58.3 36.43 24.98 13.88 8.83 7.29 11 15806 9391 4583.5 769.9 320.7 183.3 120.3 64.1 40.08 27.48 15.27 9.71 8.01 12 17243 10245 5000.2 839.9 349.9 199.9 131.2 70.0 43.72 29.98 16.65 10.60 8.74 13 18680 11098 5416.9 909.9 379.1 216.6 142.1 75.8 47.36 32.48 18.04 11.48 9.47 14 20116 11952 5833.5 979.9 408.2 233.2 153.0 81.6 51.01 34.97 19.43 12.36 10.20 15 21553 12806 6250.2 1049.8 437.4 249.9 164.0 87.4 54.65 37.47 20.82 13.25 10.93

1.03 1.05 1.1 1.5 2 2.5 3 4 5 6 8 10 11

MULTIPLE OF MOTOR FULL LOAD CURRENT

b) PHASE S/C

• PHASE S/C TRIP:

In any application where the available short circuit current is above the inter-

rupting capability of the contactor, short circuit currents must cause a fuse or circuit breaker to operate. This prevents damage to the contactor which is not designed to interrupt normal levels of short circuit current. In an application with fuses, program the setpoint

&855(17?3+$6( 6&?3+$6( 6?& 75,3 2))

to prevent the contactor fr om attempting to trip during a

6 3527(&7,21?3+$6(

short circuit. If a circuit breaker which can be tr ipp ed by an external con tac t c losure i s a vailabl e up st ream from

the contactor, it is possible to program the setpoint

&?3+$6(6?&75,3$8;,/,$5<

to cause a short circuit to activate the auxiliary relay instead of the trip

6 3527(&7,21?3+$6( &855(17?3+$6( 6

relay. Though, it is also possible to activate both the trip & auxiliary relays simultaneously. The auxiliary relay could then be connec ted to the upstream br eaker to cause it to open for a short cir - cuit. Ensure that the auxiliary relay is only programmed to activate under short circuit when used in this manner.

SPECIAL NOTE:

The AUXILIARY and TRIP status indicators will both operate for these trips even if the TRIP relay is not s elected for use ( i.e. AUXILIAR Y). I f the bre aker cannot be ext ernally tripped, program the setpoint

63527(&7,21?3+$6(&855(17?3+$6(6&?3+$6(6?&75,32)) to pre-

vent the contactor from attempting to trip during a short circuit. If a breaker is used as the motor starter interrupting device, short circuit protection would generally be enabled as it will normally be capable of handling the fault current. Short circuit protection causes the breaker to open quickly to prevent excessive mechanical damage or fire due to any large phase current. Com- plete protection from phase-to-phase and phase-to-ground faults is provided with this feature.

GE Multilin 239 Motor Protection Relay 4-23

Page 62

4 PROGRAMMING 4 PROGRAMMING

When enabled, by programming setpoint 6 3527(&7,21?3+$6(&855(17?3+$6(6&?3+$6(6?&75,3

short circuit protection is active at all times, including during motor starts. It can be disabled

75,3

by setting the setpoint

• PHASE S/C PICKUP: The phase current short circuit trip level can be set from 1 to 11 times the phase CT primary. When any phase current meets or exceeds this setpoint value during start or run conditions and is maintained for the vate.

• PHASE S/C DELAY: The trip can be instantaneous (no intentional delay) or can be delayed by up to 60000 ms to prevent nuisance tripping or allow co-ordination with associated system switchgear. The intentional delay added to the detection and output relay activation delays of the 239. When this setpoint is set to circuit trip level and time delay should be set to co-ordi nate with othe r syst em protecti ve relays to minimize equipment shutdown during a high curren t fault.

c) IMMEDIATE OVERLOAD

• IMMEDIATE OVERLOAD ALARM: When the average phase current exceeds the full load cur- rent (FLC) setpoint the p hase timed overload prot ectio n begins t i ming. Thi s will eventua ll y lead t o a trip unless the overload disappears. Immediate overload warning can be used to alert an oper- ator or to produce an alarm output using this setpoint. This feature should be set to off for sys- tems that experience overloads as part of normal operation such as crushers.

• IMMEDIATE OVERLOAD PICKUP: The immediate overload pickup setpoint is adjustable from

0.5 × FLC to 11.0 × FLC. The alarm relay will activate immediately when the average three phase current exceeds this setpoint value when the motor is running. This feature can also operate dur- ing start condition using the

• INHIBIT ON START FOR: If all other conditions are met for an immediate overload alarm to occur and the motor is starting, the alarm will occur when the delay set in this setpoint has elapsed. If this setpoint is set to a start.

63527(&7,21?3+$6(&855(17?3+$6(6&?3+$6(6?&75,32)).

3+$6(6& ' (/$< setpoint, the selected relay(s) will acti-

63527(&7,21?3+$6(&855(17?3+$6(6&?3+$6(6?&'(/$< setpoint represents the

,167 the 239 will trip within 45 ms of the onset of the short circuit. Both the short

,1+,%,72167$57)25 setpoint described below.

81/,0,7(', the immediate overload alarm will never occur during

d) MECHANICAL JAM

• MECHANICAL JAM FUNCTION: In protecting driven equipment such as pumps, gearboxes, compressors and saws, it is often desirable to have an immediate trip in the event of a locked rotor during running. During startup the mechanical jam can be disabled using the

67$57)25

with loads that experience overloads as part of normal operation such as crushers is not recom- mended.

• MECHANICAL JAM PICKUP: If a fast trip for mechanical jam i s requi red, enabl e the f eature and enter the average current pickup value above the normal maximum expected operating average phase current.

• MECHANICAL JAM DELAY: If the average phase current exceeds the setpoint value when the motor is running, and remains this way for the time delay programmed, one of the assigned relay(s) will activate. Since the mechanical jam function can be assigned to any relay, if trip and the “CAUSE OF LAST TRIP: MECHANICAL JAM” message will be displayed. Con- versely, if the function is assigned to ALARM, and the above conditions are met, the fault is con- sidered to be an ALARM, and the 239 will display “MECHANICAL JAM ALARM”.

setpoint described below, since a typical inrush of 600% is normal. Use of this feature

0(&+$1,&$/ -$0 3,&.83

75,3, $8;,/,$5<, or 75,3$8;5(/$<6 are assigned, the function is considered to be a

,1+,%,721

4-24 239 Motor Protection Relay GE Multilin

Page 63

4 PROGRAMMING 4 PROGRAMMING

• INHIBIT ON START FOR: If all other conditions are met for a mechanical jam feature to activate

and the motor is starting, the function will operate when the delay set in this setpoint has elapsed. If this setpoint is set to

e) UNDERCURRENT

• UNDERCURRENT FUNCTION: Typical uses for undercurrent include protection of pumps from

loss of suction, fans from loss of airflow due to a closed damper or conveyor systems from a bro- ken belt. Undercurrent can either be disabled, used as an alarm, a trip or as a process control. Set this setpoint to off if the feature is not required. Selecting alarm relay will cause the alarm relay to activate and display an alarm message whenever an undercurrent condition exists. Selecting trip relay wi ll cause the trip relay to activate and display a cause of t rip message when- ever an undercurrent condition occurs. Selecting auxiliary relay will cause the auxiliary relay to activate for an undercurrent condition but no message will be displayed. This is intended for pro- cess control.

For example, if the motor full load current (FLC) is set to 100 A for a pump motor, setting the undercurrent pickup to 60% and selecting t he alarm rel ay will cau se the relay to activat e and cre - ate an alarm message when the average phase current drops below 60 A while running which might represent loss of suction.

• UNDERCURRENT PICKUP: A further use of this feature is as a pre-overload warning. This is

accomplished by setting the the motor but below the rated full load current. Suppose a fan normally draws 90 A and the full load current (FLC) was set to 100 A, which was the maximum rating for the fan motor. If the undercurrent pickup was set at 95% and the auxiliary relay was selected with the

)81&7,21

energized. Bearing wear could cause the current to increase above 95 A causing the undercur- rent condition to disappear. If an external alarm was wired across the normally closed auxiliary relay contacts, the alar m would sound above the normal current but before an overload occurred signaling an abnormal condit ion pr ior to ac tual shut down. Al ternat iv ely, the output could be wir ed to a process controller input to take automatic corrective action. The undercurrent feature works as long as the average phase current is ≥ 5% of full load current.

• UNDERCURRENT DELAY: If the average phase current drops below the

setpoint value and remains this way for the time delay programmed in this setpoint, the alarm relay will activate and the “UNDERCURRENT ALARM” message will be displayed if the setpoint

63527(&7,21?3+$6( &85 5(17?81' (5&8 55 (17?81'(5 &855 (17 )81&7, 21 is set to $/$50. If the s et-

point the auxiliary relay will activate and no message will be displ ayed after the delay expires.

setpoint, the 239 would always sense an undercurrent condition with the auxiliary relay

6 35 27(&7,21 ?3+$6( &855(17?81' (5&855( 17?81'(5&855 (17 )81&7,21 is set to $8;,/,$5<,

81/,0,7(', the mechanical jam function will never operate during a start .

81'(5&855(17 3,&.83 to be above the normal operating current of

81'(5&855(17

81'(5&855(17 3,&.83

f) UNBALANCE

• UNBALANCE TRIP: Unbalanced three phase supply voltages are a major cause of induction

motor thermal damage. Unbalance can be caused by a variety of factors and is common in industrial environments. Causes can i ncl ude increase d resistance in one phase due to a pitted or faulty contactor, loose connections, unequal t ap set tings in a transf or mer or non- unifor mly distr ib - uted three phase loads. The incoming supply to a plant may be balanced but varying single phase loads within the plant can cause a voltage unbalance at the motor terminals. The most serious case of unbalance is single phasing which is the complete loss of one phase of the incoming supply. This can be caused by a utility supply problem or by a blown fuse in one phase and can seriously damage a three phase motor.

GE Multilin 239 Motor Protection Relay 4-25

Page 64

4 PROGRAMMING 4 PROGRAMMING

Under normal balanced conditions the stator current in each of the three motor phases is equal and the rotor current is just suff icient to provide the turning torque. When the stator currents are unbalanced, a much higher current is induced in the rotor because it has a lower impedance to the negative sequence current component present under unbalanced conditions. This current is normally at about twice the power supply frequency and produces a torque in the opposite direc- tion to the desired motor output. Usually the increase in stator current is small (125 to 200%) so that timed overcurrent protection takes a long time to trip. However the much higher induced rotor current can cause extensive rotor damage in a short period of time. Motors can tolerate dif- ferent levels of current unbalance depending on the rotor design and heat dissipation character- istics.

• UNBALANCE TRIP PICKUP: Unbalance protection is recommended at all times. Motor data is rarely provided and direct measurement of rotor temperature is impractical so setting the unbal- ance level is empirical. For a kn own balanced s ituati on, a pi ckup le vel of 1 0% and time del ay of 5 seconds is recommended as a starting point. The pickup level can be decreased until nuisance tripping occurs. Similarly the time delay may be increased if necessary.

To prevent nuisance trips/alarms on lightly loaded motors when a much larger unbalance level

will not damage the rotor , the sin gle phase detecti on will automaticall y be defeate d if the average motor current is less than 30% of the full load current (

ImI

–

≥ :

avIFLC

< :

avIFLC

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

ImI

–

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

FLC

100%×

) setting. Unbalance is calculat ed as:

FLC

where:

= average phase current

= current in a phase with maximum deviation from

= motor full load current setting

FLC

• UNBALANCE ALARM: The operation of this feature is identical to the operation of the unbal- ance trip feature.

• UNBALANCE ALARM PICKUP: The operation of this feature is identical to the operation of the unbalance trip pickup feature.

• UNBALANCE DELAY: If phase current unbalance increases above

81%$/$1&(75,33,&.83 setpoint value and remains this way for the time delay progra mmed in this

81%$/$1&($/ $50 3,&.83 or

setpoint, the respective rel ay wil l activate and the respective warning message will be displayed.

g) HOT MOTOR

• THERMAL CAPAC ITY USED: This feature is used to signal a warning when the thermal capac- ity has exceeded a level set in this setpoint. Once the set level is exceed the alarm relay will act i- vate immediately and the “THERMAL CAPACITY USED ALARM” message will be displayed.

h) BREAKER FAILURE

• BREAKER FAILURE FUNCTION: This feature is used to activate the selected relay, if the cur- rent continues to flow afte r a t rip has occur red. I f the fea tur e is as sig ned to

$/$50 or $/$50$8;,

the “BREAKER FAILURE ALARM” message will be displayed and the assigned output relay will be active. If the function is assigned to

$8;,/,$5<, the auxiliary output relay will be active but, no

message will be displayed.

4-26 239 Motor Protection Relay GE Multilin

Page 65

4 PROGRAMMING 4 PROGRAMMING

• BREAKER FAILURE PICKUP: If a trip is present and the current is still flowing (breaker fa iled to

open) and the level of the average three phase current is equal to or greater than the setting in the

%5($.(5)$,/85(3,&.83 setpoint, the breaker failure feature will operate.

• BREAKER FAIL PICKUP DELAY: If all other conditions are met, the breaker failure feature will

operate after the delay programmed in this setpoint has elapsed. See Section 1.4: SPECIFICA- TIONS on page 1–7 for BREAKER FAILURE ti ming speci fications.

• BREAKER FAIL DROPOUT DELAY: If the breaker opens or if the average three phase current

falls below the delay programmed in this setpoint has elapsed. See Section 1.4: SPECIFICATIONS on page 1– 7 for BREAKER FAILURE timing specifications.

i) GROUND CURRENT

• GROUND TRIP: Aging and thermal cycling can eventually cause a lowering of the dielectric

strength of the winding insulation in the stator winding. This can produce a low impedance path from the supply to ground resulting in ground currents which can be quite high in solidly grounded systems. These could quickly cause severe structural damage to the motor stator slots. In resistance grounded systems there is a resistance in series with the supply ground con- nection to limit ground current and allow the system to continue operating for a short time under fault conditions. The f ault should be located and corrected as soon as possible, however, since a second fault on another phase would result in a very high current flow between the phases through the two ground fault paths. In addition to damaging the motor, a ground fault can place the motor casing above ground potential thus presenting a safety hazard to personnel.

%5($.(5)$,/85(3,&.83 setpoint, the breaker failure feature will not clear until the

On the occurrence of a ground fault caused by insulati on breakdown, a motor will usually have to be taken out of service and rewound. However an unprotected motor could suffer mechanical damage to the stator slots making rep air i mpossibl e. The faul t could al so caus e the power suppl y bus to which the faulty motor is connected to trip in order to clear the fault resulting in unneces- sary process shutdowns. Ground faults can occur in otherwise good motors because of environ- mental conditions. Moisture or conductive dust, which are often present in mines, can provide an electrical path to ground thus allowing ground current to flow. In this case, ground fault protection should shut down the motor immediately s o that it can be dr ied or cleaned bef ore bein g restar ted.

On low resistance or solidly grounded systems, sensing of the ground current is done using the phase CTs wired in a residual connection. For more sensitive ground current detection, a sepa- rate CT, referred to as a core balance or zero sequence CT, encircles the three motor conduc- tors. Ground fault detection is only suitable for systems that have a path from the supply to ground either through a resistance or by direct connection. Ungrounded systems require an arti- ficial ground to be created through use of a device like a zig-zag transformer if ground fault pro- tection is to be used.

In systems with several levels of ground fault detection, time co-ordination is required for sati s- factory operation. If ground fault protection is used on a bus, each motor must have a shorter ground fault trip time delay than the bus ground fault detector or a fault in any motor will shut down the whole bus. In a solidly grounded system, time delays as short as possible should be used to prevent system damage unless the contactor is not capable of breaking the fault current in which case a backup detection system of sufficient interrupting capacity should be allowed to operate first. When contactors are used in solidly grounded systems, the ground fault trip time should be longer than the fuse interrupt time.

GE Multilin 239 Motor Protection Relay 4-27

Page 66

4 PROGRAMMING 4 PROGRAMMING

On resistance grounded systems, where the ground current is limited to safe levels longer time delays can be used subject to co-ordination constraints. Too short time delays may cause nui- sance tripping due to transients or capacitive charging currents and should be avoided if possi- ble. Time delays of sever al hundred mi llisecond s are suit able f or applicat ions where the r elay has to be coordinated with other protective devices or a long delay is desired because of transients. Time delays of several seconds are suitable for use on high resistance grounded systems where nuisance tripping may be a problem from capacitive or induced currents during the starting inrush. Ground currents limited by the supply ground resistance can flow for longer periods with- out causing any damage.

The relay(s) selected in this setpoint along with the respective status indicator(s) on the front panel of the 239 will be active upon a ground fault trip.

• GROUND PRIMARY TRIP PICKUP: Ground fault trip when enabled in

&855(17?*5281' 75,3

exceeds the value set in this setpoint. The amount of current that will flow due to a ground fault depends on where the fault occurs in the motor winding. High current flows if a short to ground occurs near the end of the stator winding nearest to the terminal voltage. Low ground fault cur-

rents flow if a fault occurs at the neutral end of the winding since this end should be a virtual ground. Thus a low level of ground fault pickup is desirable to protect as much of the stator wind- ing as possible and to prevent the motor casing from becoming a shock hazard. In resistance grounded systems the ground fault trip level must be set below the maximum current limited by the ground resistor or else the relay will not see a large enough ground fault current to cause a trip.

• GROUND TRIP DELA Y ON RUN: This delay is used when the motor is in a RUNNING condition. If the ground current is equal to or above the remains this way for the time delay programmed in this setpoint while the motor is running, the assigned relay(s) will act ivate and the “ CAUSE OF TRIP: GROUND FAULT” message wi ll be dis - played.

NOTE:When the phase current increases from 0, the

described below is used until the 239 determines whether the motor is RUNNING or ST ARTING.

Refer to Section 5.2: A1: STATUS on page 5–2 for details on how the 239 detects a start condi- tion.

, will signal a trip condition when the ground current becomes equal to or

*5281' 35,0$5< 75,3 3,&.83 setpoint value and

*5281'75,3'(/$<2167$57 setpoint

6 3527(&7,21?*5281'

• GROUND TRIP DELAY ON START: This delay is used whe n the motor is in a STARTING condi- tion. If the ground c urr ent is equal t o or abo ve t he remains this way for the time delay programmed in this setpoint while the motor is starting, the assigned relay(s) will act ivate and the “ CAUSE OF TRIP: GROUND FAULT” message wil l be dis - played.

NOTE: When the phase current increases from 0, this delay is used until the 239 deter-

mines whether the motor is RUNNING or STARTING.

Refer to Section 5.2: A1: STATUS on page 5–2 for details on how the 239 detects a start condi- tion.

• GROUND ALARM: For detecting momentary ground faults due to initial insulation breakdown and arcing, this setpoint can be set to latched. This is especially useful in mines where moisture buildup in the windings may start to cause excessive leakage. An y short duration ground fau lt will then cause a latched alarm condition. Set to momentary if a ground fault alarm is required only while the ground current is actually present. Ground fault alarm when enabled, will signal an

4-28 239 Motor Protection Relay GE Multilin

*5281'35,0$5<75,33,&.83 setpoint value and

Page 67

4 PROGRAMMING 4 PROGRAMMING

alarm condition when the ground current is greater than or equal to the value set by the *5281'

35,0$5<$/$503,&.83

• GROUND PRIMARY ALARM PICKUP: This feature functions in a similar manner to the ground

primary trip pickup feature.

• GROUND ALARM DELAY ON RUN: This delay is used when the motor is in a RUNNING condi-

tion. If the ground current is equal to or above the and remains this way for the time delay programmed in this setpoint while the motor is running, the alarm relay will activate and the “GROUND ALARM” message will be displayed.

setpoint.

*5281'3 5,0$5< $/$50 3,&.83 setpoint value

NOTE:When the phase current increases from 0,

below is used until the 239 determines whether the motor is RUNNING or START- ING.

Refer to Section 5.2: A1: STATUS on page 5–2 for details on how the 239 detects a start condi- tion.

• GROUND ALARM DELAY ON START: This delay is used when the motor is in a STARTING

condition. If the ground current is equal to or above the value and remains this way for the time delay programmed in this setpoint while the motor is starting, the alarm relay will activate and the “GROUND ALARM” message will be displayed.

NOTE: When the phase current increases from 0, this delay is used until the 239 deter-

mines whether the motor is RUNNING or STARTING.

Refer to Section 5.2: A1: STATUS on page 5–2 for details on how the 239 detects a start condi- tion.

a) THERMISTOR

Insulation breakdown of the stator windings due to overheating is the main cause of motor failure under overload conditions. Heat buildup in the rotor can be very rapid but the large thermal mass of the motor prevents direct detection by temperature sensors embedded in the stator slots soon enough to prevent damage. It may take several minutes for the temperature sensor to reach its trip temperature. Consequently, a predictive model is required to accurately determine heat buildup within the motor. The 239 relay uses an accurate electronic memory method based on motor cur- rents and time based integration algorithms. Thermal overloads rely on using motor current to heat an element with a much smaller time constant than the motor itself to predict overheating within the motor but these devices, although inexpensive, are subj ect to many limitations.

*5281' $/$50 '(/$<21 67$57 described

*5281'35,0$5<$/$503,&.83 setpoint

4.6 TEMPERATURE

Overheating from causes other than resistive heating due to current cannot be dete cted by modeling methods that only sense current. To detect the effects of motor overheating due to blocked ventila- tion, high ambient temperat ure or ot her unfo resee n cause s, dir ect temper atu re sensi ng is neces sary. Since temperature rise under these conditions is much slower, the temperature detector will accu- rately sense the actual temperature within the motor which would not be true under a rapid heat buildup situation such as locked rotor for example.

• THERMISTOR FUNCTION: Linear sensing elements such as RTDs can give an output of actual

temperature but these are expensive and unnecess ary for bas ic protecti on of small motors . Ther- mistors are available which give a rapid change of resistance at a specific temperature. The 239 accepts a thermistor input and will provide a trip/alarm/auxiliary control within 2 seconds of the thermistor threshold temperature being matched or exceeded. Either negative temperature coef- ficient (NTC) or positive temperature coefficient (PTC) thermistors can be used. The 239

GE Multilin 239 Motor Protection Relay 4-29

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4 PROGRAMMING 4 PROGRAMMING

assumes a PTC thermistor connection when the +27 5(6,67$1&( is programmed > &2/' 5(6,6

. The 239 assumes a NTC thermistor connection when the &2/'5(6,67$1&( is pr ogrammed

7$1&(

≥

+27 5(6,67$1&(. PTC thermistors are preferred because three PTC thermistors can be con-

nected in series to monitor each of the stator phases. This is not possible with NTC thermistors because all three thermistors must be hot to obtain a fault indication. Select OFF if no thermistor is installed. If the motor is still overheated after a trip, the thermistor signal will prevent restarting of the motor by tripping the 239 immediately af ter reset. Thermistor temper ature wi ll be di splayed as either hot or cold because the thermistor is nonlinear. If the thermistor function is to be used for process control, assign it t o the auxili ary relay in whi ch case the auxil iary relay will activate but no message will be displayed.

• THERMISTOR HOT RESISTANCE: Consult manufacturer’s data for the thermi stor(s ) in st alled i n the motor and enter the hot resistance value here. If three PTC thermistors are connected in series, enter the hot resistance of 1 thermistor.

• THERMISTOR COLD RESISTANCE: Consult manufacturer’s data for the thermistor(s) installed in the motor and enter the cold resistance value here. If three PTC thermistors are connected in series, enter 3 times the cold resist ance value of a single thermistor.

EXAMPLE 1: PTC THERMISTOR

63527(&7,21?7(03(5$785(?7+(50,6725?7+(50,6725+275(6,67$1&(NΩ 63527(&7,21?7(03(5$785(?7+(50,6725?7+(50,6725&2/'5(6,67$1&(NΩ

63527(&7,21?7(03(5$785(?7+(50,6725?7+(50,6725)81&7,2175,3

The thermistor trip will occur when the thermistor input resistance is greater than or equal to the

6?3527(&7,21?7(03(5$785(?7+(50,6725?7+(50,67 25+275( 6,67$1&( setting of NΩ.

The thermistor trip can be reset when the thermistor input resistance becomes less than the

63527(&7,21?7(03(5$785(?7+(50,6725?7+(50,6725 &2/'5 (6,67$1&( setting of NΩ.

EXAMPLE 2: NTC THERMISTOR

63527(&7,21?7(03(5$785(?7+(50,6725?7+(50,6725+275(6,67$1&(NΩ 63527(&7,21?7(03(5$785(?7+(50,6725?7+(50,6725&2/'5(6,67$1&(NΩ

63527(&7,21?7(03(5$785(?7+(50,6725?7+(50,6725)81&7,2175,3

The thermistor trip will occur when the thermistor input resistance is less than or equal to the

6?3527(&7,21?7(03(5$785(?7+(50,6725?7+(50,6725 +275 (6, 67$1&(

The thermistor trip can be reset when the thermistor input resistance becomes greater than the

63527(&7,21?7(03(5$785(?7+(50,6725?7+(50,6725&2/'5(6,67$1&(

• THERMISTOR NOT CONNECTED ALARM: If the thermistor becomes open circuited during use, the ACTUAL VALUES display for the thermistor will be "NOT CONNECTED". The 239 relay will generate an alarm to warn of the fault if thi s setpoint is enabled.

setting of

NΩ

NΩ

b) RTD 1-3

Protection against excessive motor temperature due to loss of ventilation or high ambient tempera- tures is provided by the RTD option which must be ordered with the relay if required. Up to 3 resis- tance temperature detectors (RTDs) must be supplied with the motor to use this option. When ordering a motor with RTDs, the 100 Ω platinum DIN 43730 type is the preferred choice for optimum sensitivity and linearity. Other RTDs that can be selected are 100 Ω nickel, 120 Ω nickel and 10 Ω copper.

(OPTION)

4-30 239 Motor Protection Relay GE Multilin

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4 PROGRAMMING 4 PROGRAMMING

• RTD 1-3 APPLICA TI ON: RTDs can be located i n the st at or windi ngs or the beari ngs. Speci fy the

location of each RTD in this setpoint. The application name selected here will be displayed as part of the alarm and tr ip message. If a particular RTD input is not used, this setpoint should be set to off.

• RTD 1-3 TYPE: This setpoint must be programmed to the type of R TD for each of the R TDs con-

nected. The factory default is 100 Ω platinum but 100 Ω nickel, 120 Ω nickel, or 10 Ω copper can also be connected to each input.

• RTD 1-3 TRIP and RTD 1-3 ALARM: Alarm and trip settings for stator RTDs depend on the

motor stator insulat ion type. Cla ss B insul ati on rati ng is the f act ory d efault with alar m and tri p lev - els of 110°C and 130°C respectively. Higher temperatures can be selected for other insulation classes. Consult the motor manufacturer for suitable settings if higher temperature insulation is installed in the motor. Bearing temperature settings are empirically set. Default settings are 75°C alarm and 90°C trip. The alarm/trip will occur immediately after the input becomes equal to or exceeds the temperature setting. Once a motor is running for several hours the actual tempera- ture can be monitored and the settings reduced. Over time a bearing problem such as a loss of lubricant will show up as an increased temperature. Consequently, a setting close to the actual operating temperature is desirable providing it does not generate nuisance alarms from ambient temperature changes or load variations.

Temperature display units are set as either Celsius or Fahrenheit depending on the selection of the setpoint of the RTDs may be displayed. If R TD appli cation is set to RTD". When the setpoint sius to Fahrenheit or

63527(&7,21?7(03(5$785(?57'?57'$/$50 will automatically be scaled to the proper set-

ting.

66(783?35()(5( 1&(6?7(03(5$785(',63/ $<. RTD temperature readings from all

2)), the display for that R TD will be "no

6 6(783?35( )(5(1&(6?7(03(5$785(',63 /$< is changed from Cel-

vice versa

, setpoints 6 3527(&7,21?7(03(5$785(?57' ?57'  75 ,3 and

c) RTD SENSOR FAILURE

• RTD SENSOR FAILURE ALARM: If an RTD becomes open circuited during use, the ACTUAL

VALUES display for that RTD will be "no RTD". Readings from the disconnected RTD will then be ignored for overtemperature protect ion. The 239 r elay will generat e an alarm to warn of the fault y RTD if this setpoint is enabled. Setpoints

63527(&7, 21?7(03(5$785(?57' ?57'$/$50 should be set to off for any unused RTD ter-

minals.

6 3527(&7,21?7(03(5$785(?57' ?57'  75,3 and

GE Multilin 239 Motor Protection Relay 4-31

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4 PROGRAMMING 4 PROGRAMMING

Table 4–3: RTD RESISTANCE VS. TEMPERATURE

TEMPERATURE 100 Ω

°C °F

-40 -40 84.27 Ω 79.13 Ω 92.76 Ω 7.490 Ω

-30 -22 88.22 Ω 84.15 Ω 99.41 Ω 7.876 Ω

-20 -4 92.16 Ω 89.23 Ω 106.41 Ω 8.263 Ω

-10 14 96.09 Ω 94.58 Ω 113.0 Ω 8.649 Ω 0 32 100.0 Ω 100.0 Ω 120.0 Ω 9.035 Ω

10 50 103.9 Ω 105.6 Ω 127.2 Ω 9.421 Ω 20 68 107.8 Ω 111.2 Ω 134.5 Ω 9.807 Ω 30 86 111.7 Ω 117.1 Ω 142.1 Ω 10.19 Ω 40 104 115.5 Ω 123.0 Ω 149.8 Ω 10.58 Ω 50 122 119.4 Ω 129.1 Ω 157.7 Ω 10.97 Ω 60 140 123.2 Ω 135.3 Ω 165.9 Ω 11.35 Ω 70 158 127.1 Ω 141.7 Ω 174.3 Ω 11.74 Ω 80 176 130.9 Ω 148.3 Ω 182.8 Ω 12.12 Ω 90 194 134.7 Ω 154.9 Ω 191.6 Ω 12.51 Ω

100 212 138.5 Ω 161.8 Ω 200.6 Ω 12.90 Ω

PLATINUM

100 Ω

NICKEL

120 Ω

NICKEL

10 Ω

COPPER

110 230 142.3 Ω 168.8 Ω 209.9 Ω 13.28 Ω 120 248 146.1 Ω 176.0 Ω 219.3 Ω 13.67 Ω 130 266 149.8 Ω 183.3 Ω 228.9 Ω 14.06 Ω 140 284 153.6 Ω 190.9 Ω 238.8 Ω 14.44 Ω 150 302 157.3 Ω 198.7 Ω 249.0 Ω 14.83 Ω 160 320 161.0 Ω 206.6 Ω 259.3 Ω 15.22 Ω 170 338 164.8 Ω 214.8 Ω 269.9 Ω 15.61 Ω 180 356 168.5 Ω 223.2 Ω 280.8 Ω 16.00 Ω 190 374 172.2 Ω 231.6 Ω 291.9 Ω 16.38 Ω 200 392 175.8 Ω 240.0 Ω 303.5 Ω 16.78 Ω

4-32 239 Motor Protection Relay GE Multilin

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4 PROGRAMMING 4 PROGRAMMING

4.7 SWITCH INPUTS

a) OPTION SWITCH 1-2

• OPTION SWITCH 1-2 NAME: A 20 character name can be assigned to the option switch inputs. See Section 4.2e) PROGRAMMABLE MESSAGE on page 4–7 to learn how to enter the switch names. This name will appear in the following messages.

• OPTION SWITCH 1-2 FUNCTION: The two option switch inputs are identical in operat ion. These can be programmed to alarm, trip, energize the auxiliary relay for process control, select alter- nate setpoints upon detection of closure, or disable starts upon detection of closure in conjunc- tion with t he some applications start protection may not be required. Therefore, by setting this setpoint to the start protection on the 239 can be defeated. If the setpoint is set to directly into run condition and overload curves will be employed to protect the connected load.

• OPTION SWITCH 1-2 DELAY: A delay of 0.0 to 60.0 seconds is programmed here. The switch must remain closed for the programmed length of time in order for the 239 to detect the condi- tion. If the switches are not used then they should be set to off in

,13876?237,216:,7&+?237,216:,7&+)81&7,21

• OPTION SWITCH 1-2 ALTERNATE SETPOINTS: see Section 4.8: MULTI-SPEED MOTOR below.

',6$% /(67$576 setpoint described in Section 4.3b) MOTOR DATA on page 4–10. In

<(6,

<(6, the 239 will go

6 3527(&7,21? 6:,7&+

4.8 MULTI-SPEED MOTOR

The 239 has a multi-speed motor feature. This feature is intended to provide proper protection for a two, three, or four-speed motor where there will be different full motor characteristics (based upon speed settings). The algorithm integrates the heating at each speed into one thermal model using a common, thermal capacity used register for all speeds.

If the two-speed motor feature is used, OPTION SWITCH 1 and/or OPTION SWITCH 2 will be dedi- cated as the two-speed motor. Terminals 41 and 46 (and/or 42 and 47) will be monitored for a con- tact closure – closure of the contact will signify that the motor is in Speed 2. If the input is open, it signifies that the motor is in Speed 1. This allows the 239 to determine which setpoints should be active at any given point in time.

• OPTION SWITCH 1-2 ALTERNATE SETPOINTS: The alternate setpoints only appear if the

237,216:,7&+)81&7,21 is set to $/7(51$7(6(732,176. As shown in the table below, there are six

alternate setpoints that are divided into 3 sets. The following table shows the conditions required to select the appropriate set of alternate setpoints.

GE Multilin 239 Motor Protection Relay 4-33

Page 72

4 PROGRAMMING 4 PROGRAMMING

Table 4–4: SELECTING ALTERNATE SETPOINTS

OPTION

SWITCH 1

ST ATUS

X anything but

OPTION SWITCH 1

FUNCTION

ALTERNATE SETPOINTS

OPTION

SWITCH 2

OPTION SWITCH 2

FUNCTION

ST A TUS

X anything but

ALTERNATE SETPOINTS

SELECTED

SETPOINTS

OPEN ALTERNATE SETPOINTS X anything but

ALTERNATE SETPOINTS

CLOSED ALTERNATE SETPOINTS X anything but

ALTERNATE SETPOINTS

X anything but

OPEN ALTERNATE SETPOINTS MAIN

ALTERNATE SETPOINTS

X anything but

CLOSED ALTERNATE SETPOINTS

ALTERNATE SETPOINTS

OPEN ALTERNATE SETPOINTS OPEN ALTERNATE SETPOINTS MAIN

CLOSED ALTERNATE SETPOINTS OPEN ALTERNATE SETPOINTS

OPEN ALTERNATE SETPOINTS CLOSED ALTERNATE SETPOINTS

CLOSED ALTERNATE SETPOINTS CLOSED ALTERNATE SETPOINTS

X = don’t care MAIN = main setpoints

SET

MAIN

The message shown below is available on the 239, to indicate which is the currently selected group. The 239 will also indicate the setpoints group that was in use at the time of the last trip.

xxxx SETPOINTS GROUP CURRENTLY IN USE

Located in ACTUAL VALUES pages A1 under the sub-heading SWITCH STATUS

xxxx = MAIN, 2nd, 3rd, 4th

4-34 239 Motor Protection Relay GE Multilin

Page 73

4 PROGRAMMING 4 PROGRAMMING

Figure 4–7: TWO SPEED MOTOR WIRING DIAGRAM

GE Multilin 239 Motor Protection Relay 4-35

Page 74

4 PROGRAMMING 4 PROGRAMMING

4.9 S5: TESTING

SETPOINT

]] SETPOINTS ]] S5 TESTING

MESSAGE MESSAGE

▲ ▼

] TEST CONFIGURATION ]

MESSAGE

▲

▼

] TEST RELAYS & LEDS ]

MESSAGE

▲

▼

] CURRENT SIMULATION ]

MESSAGE

▲ ▼

MESSAGE

SETPOINT

]] SETPOINTS ]] S1 239 SETUP

DISABLE START PROTECTION: NO

PROTECTION DISABLED FOR: 15 min

DISABLE STATISTICS LOGGING: NO

OPERATION TEST: NORMAL MODE

SIMULATION: OFF

SIMULATION ENABLED FOR: 15 min

PHASE A CURRENT: 0 A

PHASE B CURRENT: 0 A

PHASE C CURRENT: 0 A

GROUND CURRENT:

0.0 A

Range: NO, YES

Range: 5 to 300, UNLIMITED Step: 5 min.

Range: NO, YES.

Range: NORMAL MODE, TRIP RE LAY & LE D ON, ALARM RELAY & LED ON, AUXILIARY RELAY & LED ON, SERVICE RELAY & LED ON, ALL RELAYS ON, PICKUP LED ON, COMMUNICATE LED ON, ALL LEDS ON

Range: ON, OFF

Range: 5 to 300, UNLIMITED Step: 5 min.

Range: 0 to 10000, step 1 A (CT PRI SET > 50 A )

0 to 1000 step 0.1 A (CT PR I S E T

Range: Same as PHASE A CURRENT

Range: 0 to 10000, st ep 1 A

(CT PRI SET > 50 A)

0 to 1000 step 0.1 A

(CT PRI SET

≤

50 A)

≤

50 A)

] ANALOG OUTPUT ] SIMULATION

MESSAGE

▲

▼

SEE NEXT PAGE

4-36 239 Motor Protection Relay GE Multilin

MESSAGE

SIMULATION: OFF

SIMULATION ENABLED FOR: 15 min

ANALOG OUTPUT FORCED TO: OFF %

Range: OFF, ON

Range: 5 to 300, UNLIMITED Step: 5 min.

Range: 0.0 to 120.0, OFF Step: 0.1 %

DESIGNATES SETPOINTS THAT ARE ONLY VISIBLE IF ANALOG OUTPUT OPTION IS INSTALLED

Page 75

4 PROGRAMMING 4 PROGRAMMING

SEE PREVIOUS PAGE

] SWITCH INPUTS ] SIMULATION

MESSAGE

▲

▼

] THERMISTOR ] SIMULATION

MESSAGE

▲

▼

MESSAGE

SIMULATION: OFF

SIMULATION ENABLED FOR: 15 min

EMERGENCY RESTART INPUT: OPEN

SIMULATION: OFF

SIMULATION ENABLED FOR: 15 min

THERMISTOR RESISTANCE: 0

EXTERNAL RESET INPUT: OPEN

OPTION SWI TCH 1 INPUT: OPEN

OPTION SWI TCH 2 INPUT: OPEN

Ω

Range: OFF, ON

Range: 5 to 300, UNLIMITED Step: 5 min.

Range: OPEN, CLOSED

Range: ON, OFF

Range: 5 to 300, UNLIMITED Step: 5 min.

Range: 0 to 30000

Ω

Step: 1

] RTD SIMULATION ]

MESSAGE

▲

▼

] GE POWER MANAGEMENT ] USE ONLY

MESSAGE

SIMULATION: OFF

SIMULATION ENABLED FOR: 15 min

RTD 1 TEMPERATURE:

0 °C

RTD 2 TEMPERATURE: 0 °C

RTD 3 TEMPERATURE: 0 °C

SERVICE PASSCODE: 0

Range: OFF, ON

Range: 5 to 300, UNLIMITED Step: 5 min.

Range: –40 to +200 step 1°C (if °C)

–40 to +400 step 1°F (if °F)

Range: –40 to +200 step 1°C (if °C)

–40 to +400 step 1°F (if °F)

Range: –40 to +200 step 1°C (if °C)

–40 to +400 step 1°F (if °F)

Range: 0 to 9999 step 1

DESIGNATES SETPOINTS THAT ARE ONLY VISIBLE IF RTD OPTION IS INSTALLED

Figure 4–8: SETPOINTS PAGE 5 – TESTING

GE Multilin 239 Motor Protection Relay 4-37

Page 76

4 PROGRAMMING 4 PROGRAMMING

a) TEST CONFIGURATION

• DISABLE ST ART PROTECTION: To verify correct operation of overload curves it ma y be neces- sary to disable the start protection. When this feature is turned on and current is injected above the full load setting, the overload curves will be used to build up the thermal capacity instead of

/2&.('5272 5 &855(17 and 6$)( 67$// 7,0( setpoints. When this feature is enabled the 239

the assumes the motor is in RUN condition any time current is present even on initial startup inrush current.

EXAMPLE:

66<67(06(783?02725'$7$?0272 5)8// /2$'&855(17$

66<67(06(783?02725'$7$?6$)(67$//7,0(&2/'6

66<67(06(783?02725'$7$?/2&.('52725 &855(17;)/&

63527(&7,21?3+$6(&855(17?29(5 /2$'?29(5/2$'&859(12

67(67,1*?7(67&21),*85$7,21?',6$%/(67$573527(&7,21<(6

Inject phase current that 5.0 × FLC. The OVERLOAD TRIP will occur in 14.57 seconds

instead of 28.8 seconds. This is because the overload curves is being used to buildup the thermal capacity instead if the

6$)(67$//7,0( and /2 &.('52725&855(17 settings.

As a safeguard, start protecti on will automatically be re-enabled if:

•power to the 239 is turned off and on

•time programmed in the

6 7(67,1*?7(67 &21),*85$7,21?',6$%/( 3527(&7,21 )25 setpoint

has elapsed since the start protection was first disabled

When start protection is disabled th e following flash message will be displayed for 3 seconds.

START PROTECTION

HAS BEEN DISABLED

When start protection is re-enabled the following flash message will be displayed for 3 seconds.

START PROTECTION

HAS BEEN ENABLED

• DISABLE PROTECTION FOR: Select the desired length of time that start protection will be dis- abled. When the programmed time has elapsed, start protection will be re-enabled. If

81/,0,7('

is selected, start protection will be disabled until the feature is turned off via the ',6$%/( 67$57

3527(&7,21

• DISABLE STATISTICS LOGGING: Setting this setpoint to NO disables the logging of the

0$;67$57,1*&855(17

setpoint or via the serial port or until control power is removed from the 239.

02725

and 027255811,1* 7,0( actual values. See Section 5.2c) MOTOR STA-

TISTICS on page 5–5 for further detail s.

b) TEST OUTPUT RELAYS & LEDS

• OPERATION TEST: To verify correct operation of output relay wiring, each output relay and sta- tus indicator can be manually forced on or off via the keypad or ser ial port. Testing is only allowed if there is no phase and ground current present and current simulation is turned off.

4-38 239 Motor Protection Relay GE Multilin

Page 77

4 PROGRAMMING 4 PROGRAMMING

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

6 7(67,1*? &855(17 6,08/$7,21?6,08/$7,21 is 21, 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 attempted via the serial port while phase or ground current is present or simulation mode is on, an error code will be returned.

While the

23(5$7,217(67 setpoint is displayed, use the or key to scroll to the

▲

VALUE

▼

VALUE

desired output relay and/or status indicator to be tested. As long as the test message remains displayed the respective 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 239 is turned off and on

• phase or ground current is detected by the 239

• current simulation is turned on

• new message is displayed

c) CURRENT SIMULATION

Simulated currents can be forced instead of the actual currents sensed by the external CTs con- nected to the 239. This allows verification of all current related relay functions such as timed over- load trip. It also allows verification that external trip and alarm wiring is responding correctly.

• SIMULATION: Enter the required simulation phase and ground currents in the following mes-

sages. Enter ON to switch from actual currents to the programmed simulated values. This com- mand will be ignored if real phase or ground current is present. Set this setpoint

2)) 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 239 is turned off and on

• time programmed in the

67(67,1*?&855(176,08/$7,21?6,08/$7,21(1$%/(')25 setpoint

has elapsed since simulation was first enabled

• 239 is tripped

When current simulation is turned on the foll owing flash message wi ll be displa yed for 3 seconds .

When current simulation is turned off the fol lowing flash message wil l be displayed for 3 seconds .

GE Multilin 239 Motor Protection Relay 4-39

SIMULATION

HAS BEEN ENABLED

CURRENT SIMULATION

HAS BEEN DISABLED

Page 78

4 PROGRAMMING 4 PROGRAMMING

• PHASE A/B/C CURRENT: Enter the desired phase current for simulation. For example, to verify operation of the unbalan ce funct ion, t urn the unbala nce f unct ion tr ip on, set

&855(17?81%$/$1&(?3+$6( 81%$/$1&( 75,3 3,&.83 81%$/$1&(?3+$6( 81%$/$1&($/$50 6<67(06(783?02725'$7$?02725)8///2$'

= 100 A

= 52 A

= 85 A

Now set

67(67,1*?&855(176,08/$7,21?6,08/$7,2121. The relay will see this simulated current

to 2)). Enter the following simulation values, assuming 6

to , and set 63527(&7,21?3+$6(&855(17?

is set to $, to create an unbalance of 27%:

6 3527(&7,21?3+$6(

in all 3 phases instead of the actual input current. The 239 should trip after a time determined by

63527(&7,21?3+$6(&855(17?81%$/$1&(?3+$6(81%$/$1&('(/$< setpoint. Set 67(67,1*?&85

5(176,08/$7,21?6,08/$7,212))

after testing is co mp lete.

• GROUND CURRENT: Enter the ground current for simulation of a ground fault. Then set

7(67,1*?&855(176,08/$7,21?6,08/$7,2121

• SIMULATION ENABLED FOR: Select the desired length of time that simulation will be enabled.

When the programmed time has elapsed, current simulation will turn off. If

to see the effect of this current.

81/,0,7(' is selected,

simulated current will be used until one of the above mentioned conditions is met.

d) ANALOG OUTPUT SIMULATION

• SIMULATION: Enter ON to switch from actual analog output to the programmed simulation value. Set this setpoint to OFF after simulation is complete. As a safeguard, simulation will auto- matically turn off if:

• power to the 239 is turned off and on

• time programmed in the setpoint has elapsed since simulation was fir st enabled

)25

6 7(67,1*?$1$/2* 287387 6,08/$7,21?6,08/$7,21 (1$%/('

When analog output simulation is turned on the following flash message will be displayed for 3 sec- onds.

SIMULATION

HAS BEEN ENABLED

When analog output simulation is turned off the following flash message will be displayed for 3 seconds.

6

ANALOG OUT SIMULATION

• ANALOG OUTPUT FORCED TO: Enter in percent the analog output value to be simulated. Whether the output is 0-1mA, 0-20mA or 4-20mA is dependent upon the selection in

6(783$1$/2*287387$1$/2*2873875$1*(

EXAMPLE:

Alter the setpoints below as shown:

66(783$1$/2*287387$1$/2*2873875$1*(0$

67(67,1*$1$/2*2873876,08/$7,21$1$/2*287387)25&('72

67(67,1*$1$/2*2873876,08/$7,216,08/$7,2121

4-40 239 Motor Protection Relay GE Multilin

HAS BEEN DISABLED

6 

Page 79

4 PROGRAMMING 4 PROGRAMMING

The output current level will be 12mA.

• SIMULATION ENABLED FOR: Select the desired length of time that simulation will be enabled.

When the programmed time has elapsed, analog output simulation will turn off. If selected, simulated analog output wil l be used unti l simul ation is tur ned of f via the

setpoint or via the serial port or until control power is removed from the 239.

2))

81/,0,7(' is

6,08/$7,2121

e) SWITCH INPUTS SIMULA TION

• SIMULATION: Enter

21 to switch from actual switch inputs to the programmed simulation status

of each switch input. While simulation is on the actual switch input status will be overridden by the simulated status of each inp ut. Set t his set point t o

2)) after simulation is com plete . As a safe -

guard, simulation will automatically turn off if:

•power to the 239 is turned off and on

•time programmed in the

67(67,1* ?6:,7&+ ,13876 6,08/$7,21?6,08/$7,21(1$%/(' )25 set-

point has elapsed since simulation was first enabled

When switch inputs simulation is turned on the following flash message will be displayed for 3 seconds.

SIMULATION

HAS BEEN ENABLED

When switch inputs simulation is turned off the following flash message will be displayed for 3 seconds.

SIMULATION

HAS BEEN DISABLED

• EMERGENCY RESTART INPUT: Enter the status of this switch input as

23(1 or &/26('. The

functionality of this input remains as is with actual input connected.

• EXTERNAL RESET INPUT: Enter the status of this switc h input as

23(1 or &/ 26('. The function -

ality of this input remains as is with actual input connected.

• OPTION 1 INPUT: Enter the status of this switch input as

23(1 or &/26('. The functi onalit y o f thi s

input remains as is with actual input connected.

• OPTION 2 INPUT: Enter the status of this switch input as

23(1 or &/26('. The functi onalit y o f thi s

input remains as is with actual input connected.

• SIMULATION ENABLED FOR: Select the desired length of time that simulation will be enabled.

When the programmed time has elapsed, switch inputs simulation will turn off. If selected, simulated switch input status will be used until simulation is turned off via the

7,21212))

setpoint or via the serial port or until control power is removed from the 239.

81/,0,7(' is

6,08/$

f) THERMISTOR SIMULATION

• SIMULATION: Enter

21 to switch from actual thermistor input to the programmed simulation

thermistor resistance value. While simulation is on the actual thermistor input will be overridden by the simulated resistance value. Set this setpoint to guard, simulation will automatically turn off if:

•power to the 239 is turned off and on

•the time programmed in has elapsed since simulation was first enabled

GE Multilin 239 Motor Protection Relay 4-41

2)) after simulation is complete. As a safe-

6 7(67,1*?7+(50,6725 6,08/$7,21?6,08/$ 7,21 (1$%/(' )25 setpoint

Page 80

4 PROGRAMMING 4 PROGRAMMING

When thermistor simulation is turned on the following flash message will be displayed for 3 sec- onds.

SIMULATION

HAS BEEN ENABLED

When thermistor simulation is turned off the following flash message will be displayed for 3 sec- onds.

THERMISTOR SIMULATION

HAS BEEN DISABLED

• THERMISTOR RESISTANCE: 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 239.

• SIMULATION ENABLED FOR: Select the desired length of time that simulation will be enabled. When the programmed time has elapsed, thermistor simulation will turn off. If selected, simulated thermistor input will be used until simulation is turned off via the

212))

setpoint or via the serial port or until control power is removed from the 239.

g) RTD SIMULATION

• SIMULATION: Enter ON to switch from actual input to the programmed simulation temperature value of each RTD input value. While simulation is on all three RTD r inputs will be overridden by the simulated temperatur e values. Set this setpoint to guard, simulation will automatically turn off if:

•power to the 239 is turned off and on

•time programmed in

6 7(67,1*?57' 6,08/$7,21?6,08/$7,21 (1$%/(' )25 setpoint has

elapsed since simulation was first enabled

2)) after simulation is complete . As a safe-

81/,0,7(' is

6,08/$7,21

When RTD simulation is turned on the following flash message will be displayed for 3 seconds.

SIMULATION

HAS BEEN ENABLED

When RTD simulation is turned of f the following flash message will be displayed for 3 seconds.

RTD SIMULATION

HAS BEEN DISABLED

• RTD 1/2/3 TEMPERATURE: Enter the value of the each RTD temperature to be simulated. The functionality of the RTDs remains as is with actual inputs connected to the 239.

• SIMULATION ENABLED FOR: Select the desired length of time that simulation will be enabled. When the programmed time has elapsed, RTD simulation will turn off. If simulated RTD input will be used until simulation is turned off via the

81/,0,7(' is selected,

6,08/$7,21212)) setpoint

or via the serial port or until cont rol power is removed from the 239.

h) GE MULTILIN USE ONLY

• SERVICE PASSCODE CODE: These messages are accessed by GE Multilin personnel only for testing and service.

4-42 239 Motor Protection Relay GE Multilin

Page 81

5 MONITORING 5 MONITORING

239 INSTRUCTION MANUAL 5 MONITORING 5.1 ACTUAL VALUES VIEWING

Any measured value can be displayed on demand using the key. Each time the

ACTUAL ACTUAL

key is pressed, the beginning of a new page of monitored values i s displayed. These are grouped as: A1: STATUS, A2: METERING, A3: PRODUCT INFO. Use the / keys in the same

MESSAGE

▲

MESSAGE

▼

fashion as for setpoints to move between actual value m essages. A detailed description of each dis- played message in these groups is given in the sections that follow.

ACTUAL ACTUAL

]] ACTUAL VALUES ]] A1 STATUS

MESSAGE

] GENERAL ]

] LAST TRIP DATA ]

]] ACTUAL VALUES ]] A2 METERING

▼

] CURRENT ]

] MOTOR CAPACITY ]

MESSAGE

ACTUAL

]] ACTUAL VALUES ]] A3 PRODUCT INFO

▼

] FIRWARE VERSIONS ]

] MODEL INFORMATION ]

MESSAGE

▼

] MOTOR STATISTICS ]

] SWITCH STATUS ]

] PROGRAMMABLE ] MESSAGE

Figure 5–1: ACTUAL VALUES MESSAGE ORGANIZATI ON

] TEMPERATURE ]

GE Multilin 239 Motor Protection Relay 5-1

Page 82

5 MONITORING 5 MONITORING

5.2 A1: STATUS

ACTUAL

]] ACTUAL VALUES ]] A1 STATUS

MESSAGE

MESSAGE s

MESSAGE t

MESSAGE

] GENERAL ]

MESSAGE s

MESSAGE t

MESSAGE 4

MESSAGE 3

ACTUAL

]] ACTUAL VALUES ]] A2 METERING

SYSTEM STATUS NORMAL

MOTOR STATUS STOPPED

MOTOR STARTING 1zz2zz3zz4zz5zz6zz7zz8

TIME TO OVERLOAD RESET: 10.0 MINUTES

OVERLOAD TRIP IN: 11.5 SECONDS

IMMEDIATE OVERLOAD Iavg = 110% FLC

UNDERCURRENT ALARM Iavg = 30% FLC

UNBALANCE ALARM UB = 10%

Range: TRIP, ALARM, TRIP AND ALARM, NORMAL

Range: STOPPED, STARTING, RUNNING

GROUND ALARM Ignd=5A

STATOR RTD ALARM RTD = 135 °C

BEARING RTD ALARM RTD = 135 °C

RTD SENSOR FAILURE RTD 1

INTERNAL FAULT ALARM

Seen only when condition is present

SEE NEXT PAGE

5-2 239 Motor Protection Relay GE Multilin

THERMISTOR ALARM

THERMISTOR NOT CONNECTED

THERMAL CAPACITY USED ALARM

COMMUNICATION FAILURE ALARM

OPTION SWITCH 1

ALARM

OPTION SWITCH 2

ALARM

MECHANICAL JAM

ALARM

BREAKER FAILURE

ALARM

NO ACTIVE ALARM

Page 83

5 MONITORING 5 MONITORING

SEE PREVIOUS PAGE

] LAST TRIP DATA ]

MESSAGE

▲

▼

] MOTOR STATISTICS ]

MESSAGE

CAUSE OF LAST TRIP: NO TRIP

A= 0 B= 0 C= 0 AMPS

GROUND CURRENT=

0.0 A CURRENT UNBALANCE

U/B= 0%

STATOR RTD 1 TEMP:

130°C

BEARING RTD 2 NO RTD

MOTOR MAX STARTING CURRENT = 0 A

RUNNING TIME:

0.0 h

BEARING RTD 3 NO RTD

SETPOINTS GROUP IN USE: MAIN

2nd LAST TRIP: NO TRIP

3rd LAST TRIP: NO TRIP

4th LAST TRIP: NO TRIP

5th LAST TRIP: NO TRIP

Range: NO TRIP, OV E RLOAD, SHOR T CIRCUIT, MECHANICAL JAM, UNBALANCE, GROUND FAULT, STATOR RTD, BEARING RTD, UNDERCURRENT, THERMISTOR, COMPUTER TRIP, PARAMETERS NOT SET, OPTION SWITCH 1, OPTION SWITCH 2

Range: 0 to 10000

Range: 0 to 1000

Range: 0 to 100

Range: –40 to +200 °C

–40 to +400 °F

Range: –40 to +200 °C

–40 to +400 °F

Range: –40 to +200 °C

–40 to +400 °F

Range: MAIN, 2nd, 3rd, 4th

Range: Same as CAUSE OF LAST TRIP above

Range: 0 to 10000 A

Range: 0 to 429496729.6 hrs

MESSAGE

] SWITCH STATUS ]

MESSAGE

▲

▼

SEE NEXT PAGE

GE Multilin 239 Motor Protection Relay 5-3

SW. 1 ACCESS SWITCH STATE: OPEN

SW.2 EMERG RESTART SWITCH STATE: OPEN

SW.3 EXTERNAL RESET SWITCH STATE: OPEN

OPTION SWITCH 1 SWITCH STATE: OPEN

OPTION SWITCH 2 SWITCH STATE: OPEN

Range: OPEN, CLOSED

MAIN SETPOINTS GROUP CURRENTLY IN USE

Range: OPEN, CLOSED

Page 84

5 MONITORING 5 MONITORING

SEE PREVIOUS PAGE

MESSAGE 4

] PROGRAMMABLE ] MESSAGE

MESSAGE 3

] END OF PAGE A1 ]

] Phone: 905-294-6222 ] GEindustrial.com/pm

Figure 5–2: ACTUAL VALUES PAGE 1 – STATUS

a) GENERAL

• SYSTEM ST ATUS: This message gives an indicati on if opera tion i s normal or whe ther a t rip and / or alarm has occurred. Only one condition can cause a trip at a time and this will be displayed after a trip. When alarms are present the system status will be alarm. Press to view all

MESSAGE

active alarm conditions and the corresponding actual value that is causing the alarm. Select the corresponding setpoint to determine by how much the actual val ue exceeds the alarm setting.

• MOTOR STATUS: This message displays the current status of the motor.

• MOTOR STARTING: This message is displayed when the motor is in a START mode. The

START condition occurs if the average of the three phase currents rises above the full load cur- rent setting in

66<67(06(783?02725'$7 $?02725)8///2$'&855(17 within 300 ms (worst case)

of initial detection of current by the 239.

• TIME TO TRIP: This message is displayed when a trip condition is in progress. The message display time is scaled as fo llo ws :

▼

if the trip time is> 10.0 minutes, the display will be ‘xxx.x MINUTES’

≤

10.0 minutes, the display will be ‘xxx.x SECONDS’

• TIME TO OVERLOAD RESET: This message displays the amount of time remaining before an OVERLOAD TRIP is allowed to be reset. The time will become 0 when the thermal capacity decreases to 15%.

• CAUSE OF ALARM: The appropriate alarm message is displayed when the respective alarm condition is present. More than one alarm message can be present at once.

b) LAST TRIP DATA

After a trip, all conditions present at the time of trip and the cause of trip are saved in non-volatile memory. In addition, a trip record of the last 5 causes of trip is also ret a ined for diagnosing persistent problems.

• CAUSE OF LAST TRIP: Only one condition at a time will cause a trip. The most recent cause of trip is displayed.

• A: B: C: CURRENT: Actual current flowing in each of the three phases at the moment of trip is displayed. By comparing these values to the motor full load current after an overload trip, it should be easy to determine in which phase the fault has occurred. A high current in one phase and ground indicates a phase to ground fault. A high current in 2 phases suggests a phase to phase fault. High current in a ll t hree ph ases indi cates a r unning over load or possi ble shor t cir cuit .

5-4 239 Motor Protection Relay GE Multilin

Page 85

5 MONITORING 5 MONITORING

The current resolution is 0.1 A if the &7 35 ,0 $5< setting is ≤ 50 A. The resolution is 1A if the &7

35,0$5<

• GROUND CURRENT: If excessive ground current was present at the time of trip, an insulation

failure is likely. With the motor off-line, check the insulation resistance in all three phases and cable wiring.

• CURRENT UNBALANCE: Excessive unbalance can be caused by loose terminal connections,

faulty utility supply, a blown fuse, or faulty contactor. Check for these before restarting the motor.

• STATOR (BEARING) RTD 1-3 (OPTION): If any stator RTDs shows a high temperature, check

that the ventilation to the motor is clear. Repeated starting using the Emergency R estart feature will cause the motor to overheat an d should be avoi ded. Aft er an ov erload t rip, t he R TD tempera - ture may be elevated. Verify that the motor has cooled before restarting by checking each RTD temperature using the messages an excessive bearing temperature usual ly indi cates a need fo r lu bricat ion or a fault with the bear - ing itself. Lubrica te the bearing then monitor its temperature closely after starting the motor.

• SETPOINTS GROUP IN USE: Alternate setpoints (i.e.

etc.) can be selected using the Option Switch 1 and Option Switch 2 inputs as explained in Sec- tion 4.7: SWITCH INPUTS on page 4–33. One of four possible groups of setpoints can be selected at once. This message displays the selected group at the time of the last trip.

• 2nd (3-5) LAST TRIP: A trip record of the last 5 causes of trip is retained for diagnosing persis-

tent problems. Each new trip is added to the trip record and the oldest (fifth) cause of trip is erased. No trip data is saved in this trip record. However, by observing repeated trips of the same type, an indication of an inherent fault i s o btained for maintenance purposes.

setting is > 50A.

$0(7(5,1*?7(03(5$785(. If the RTD is installed on a bearing,

3+$6( &7 35,0$5<, )8// /2$' &855(17,

c) MOTOR STATISTICS

The total motor running time (including start conditions) and the maximum average current present during the last successful st art are monitored here.

d) SWITCH STATUS

To assist in troubleshooting, the state of each switch can be verified using these messages. A sepa- rate message displays the status of each input identified by the corresponding name as shown in Figure 2–3: TYPICAL WIRING DIAGRAM on page 2–4. For a dry contact closure across the corre- sponding switch terminals the message will read closed.

NOTE: If the switch simulation is turned on in shown in these messages will be of the simulated inputs.

• SETPOINTS GROUP CURRENTLY IN USE: Alternate setpoints (i.e.

/2$'&855(17

explained in Section 4.7: SWITCH INPUTS on page 4–33. One of four possible groups of set- points can be selected at once. This message displays the currently selected group.

e) PROGRAMMABLE MESSAGE

A 40 character message can be programmed using the keypad or via the serial port using the 239PC software. See 4.2: S1: 239 SETUP on page 4–3 for an example of programming this message using the keypad.

, etc.) can be selected using the Option Switch 1 and Option Switch 2 inputs as

67(67,1*?6:,7&+ 6,08/$7,21?6,08/$7, 21, the status

3+$6( &7 35,0$5<, )8//

This message can be used for identification purposes such as company name, site name, station name, relay identification number, etc. It can be chosen as the default message so it is displayed when the unit is left alone.

GE Multilin 239 Motor Protection Relay 5-5

Page 86

5 MONITORING 5 MONITORING

5.3 A2: METERING

ACTUAL

]] ACTUAL VALUES ]] A2 METERING

MESSAGE

▲ ▼

] CURRENT ]

MESSAGE

▲

▼

] MOTOR CAPACITY ]

MESSAGE

▲

▼

] TEMPERATURE ]

MESSAGE

ACTUAL

]] ACTUAL VALUES ]] A3 PRODUCT INFO

A= 0 B= 0 C= 0 AMPS

GROUND CURRENT =

0.0 AMPS CURRENT UNBALANCE

U/B = 0%

MOTOR LOAD = 0 % FULL LOAD

THERMAL CAPACITY USED = 0%

STATOR RTD 1

TEMPERATURE: 80°C

BEARING RTD 2 TEMPERATURE: 50°C

BEARING RTD 3 TEMPERATURE: 50°C

THERMISTOR = COLD

Range: 0 to 10000 (if CT SET PRI > 50 A)

0 to 1000 (if CT SET PRI

Range: 0 to 1500 (if X:5 or RESIDUAL)

0 to 1000 (if 50:0.025 setting)

Range: 0 to 100%

Range: –40 to +200 °C

–40 to +400 °F

Range: –40 to +200 °C

–40 to +400 °F

Range: –40 to +200 °C

–40 to +400 °F

Range: HOT, COLD, CONNECTED

≤

50 A)

] END OF PAGE A2 ]

Figure 5–3: ACTUAL VALUES PAGE 2 – METERING

a) CURRENT

• A: B: C: CURRENT: Current in each phase corresponding to the A, B and C phase inputs is dis- played. Current will only be measured correctly if primary and the CT secondary is wired to match the 1 or 5 A input. If the displayed current does not match the actual current, check this setpoint and wiring. During starting, the display will auto-

5-6 239 Motor Protection Relay GE Multilin

DESIGNATES ACTUAL VALUES THAT WILL ONLY BE DISPLAYED IF RTD OPTION IS INSTALLED AND THE CORRESPONDING RTD FEATURE IS TURNED ON.

&735,0$5< is entered to match the installed CT

Page 87

5 MONITORING 5 MONITORING

matically switch to a bar graph showing multiples of full load current. Once the current drops below the motor full load setting, the display will revert to the three phase currents. The current resolution is 0.1 A if

&735,0$5< ≤ 50A. The resolution is 1 A if &735,0$5< > 50A.

• GROUND CURRENT: Presence of ground current indicates some undesirable current to ground

leakage. The ground current reading will only be correct if the CT is wired correctly and the cor- rect

&7 3 5,0$5< value is entered. Verify ground current by connecting a clamp-on ammeter

around all 3 phases. If the ground current appears incorrect, check the ground CT settings in

6<67(06(783?&7,13876

and verify the CT wiring.

6

• CURRENT UNBALANCE: Current unbalance causes rotor heating. It is cal culated as:

ImI

–

where:

≥ :

avIFLC

< :

avIFLC

= average phase current

= current in a phase with maximum deviation from

= motor full load current setting

FLC

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

ImI

–

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

FLC

100%×

These formulas allow larger levels of unbalance to be tolerated by lightly loaded motors. Exces- sive unbalance can be caused by loo se term in al connect ion s, faul ty uti lit y supply, a blown fuse or a faulty contactor.

b) MOTOR CAPACITY

• MOTOR LOAD: In order to gauge how closely the motor is running to its maximum capacity, the

motor load is calculated and displ ayed as : Motor Load = rent.

is the rated motor full load current entered in setpoint 66<67(06(783?02725 ' $7$. A

FLC

is the averag e 3 phase cur-

value greater than 100% indicates an overloaded motor that will eventually trip on timed over- load. Values less than 100% indicate that the motor is operating normally.

• THERMAL CAPACITY USED: The heating effect of starts and overloads is integrated and

stored in a thermal memory that models the heat buildup within the motor. When the thermal capacity used equals 100%, the 239 trips the motor si nce the motor is considered to be running at its maximum temperature. With no overloads present, the thermal capacity used will gradu- ally decrease to a steady state value, determined as described in

'$7$?+27&2/' &859(5$7,2

, to simulate motor cooling. When thermal capacity used is close to

6 6<67(0 6(783?02725

100%, attempting to restart a stopped motor may result in a trip due to the rapid increase in the thermal memory used under a start condition.

GE Multilin 239 Motor Protection Relay 5-7

Page 88

5 MONITORING 5 MONITORING

c) TEMPERATURE

• STATOR (BEARING) RTD1 (2-3) TEMPERATURE (OPTION): When enabled by

785(?57'?57' $33/,&$7,21

played. For RTDs installed in the stator, interpretation of the temperature is more meaningful if the insulation class of the stator windings is known. This value indicates how close the stator is operating to its maximum allowable temperature. Consult the motor manufacturer’s data for sta- tor insulation class and maximum operating temperature. Insulation life typically is reduced by half for every 10°C rise in temperature. Bearing temperatures vary with ambient conditions, greasing, wear and loading. A significant increase in bearing temperature may indicate a prob- lem that needs investigation. Temperatures can be viewed in °C or °F by selecting the appropri- ate setpoint in

• THERMISTOR: Thermistors typically installed in motors for temperature detection are nonlinear devices. When enabled, the thermi stor read out will indi cate h ot or cold dependi ng on whet her the thermistor resistance exceeds its alarm/trip threshold setpoint. If the terminals are left uncon- nected while the thermistor function is set to trip or alarm or the thermistor resistance increases above 31.5 kΩ, the thermistor is not being used, the function must be set to off.

66(783?35()(5(1&(6?7(03(5$785(',63/$<,1.

THERMISTOR NOT CONNECTED alarm message will be displayed. Therefore, if

, the actual temperature measured by each RTD will be dis-

6 7(03(5$

5-8 239 Motor Protection Relay GE Multilin

Page 89

5 MONITORING 5 MONITORING

5.4 A3: PRODUCT INFO

ACTUAL

]] ACTUAL VALUES ]] A3 PRODUCT INFO

MESSAGE

▲ ▼

] FIRMWARE REVISIONS ]

MESSAGE

▲

▼

] MODEL INFORMATION ]

ACTUAL

MESSAGE

]] ACTUAL VALUES ]] A1 STATUS

MAIN PROGRAM VER:

2.4 Nov 24, 1999

BOOT PROGRAM VER:

2.00 Mar 27, 1997 SUPERVISOR PROG VER:

1.02 Jul 17, 1996

ORDER CODE: 239-RTD-AN

MOD NUMBER(S): 000

SERIAL NUMBER: D6491234

HARDWARE

MESSAGE

▲

▼

REVISION: D

DATE OF MANUFACTURE: February 29, 1999

DATE OF CALIBRATION: February 29, 1999

] END OF PAGE A3 ]

Figure 5–4: ACTUAL VALUES PAGE 3 – PRODUCT INFO

a) SOFTWARE VERSIONS

Product software revision information is contained in these messages.

• MAIN PROGRAM VERSION: When referring to documentation or requesting technical assis- tance from the factory, record the

0$,1 352*5$0 9(56,21 and 02',),&$7,21 ),/( 180%(5. The

0$,1 352*5$09(56,21 identifies the firmware installed internally in the flash memory. The title

page of this instruction manual states the main program revision code for which the manual is written. There may be differences in the product and manual if the revision codes do not match.

• BOOT PROGRAM VERSION: This identifies the firm ware installed internally in the PROM mem- ory of the 239. This does not affect the functionality of the 239.

GE Multilin 239 Motor Protection Relay 5-9

Page 90

5 MONITORING 5 MONITORING

• SUPERVISOR PROGRAM VERSION: This identifies the firmware installed internally in the Supervisor (power fail) processor of the 239. This does not affect the functionality of the 239.

b) IDENTIFICATION

Product identification infor m ation is contained in these messages.

• ORDER CODE: The order code shows the configuration of the relay and will appear as shown below depending upon the options installed.

‘239’ Í no options have been installed, basic unit

‘239-RTD’ Í RTDs option has been inst alled

‘239-AN’ Í Analog Output option has been installed

‘239-RTD-AN’ Í RTDs and Analog Output options have been install ed

• MOD NUMBER: If unique features have been installed for special customer orders, the

180%(5

replacement model is required, the found on the label located on the back of the 239 should be specified with the order.

It is possible for the 239 to have more than one

case the message will display all the

• SERIAL NUMBER: Each 239 shipped from the factory has a unique serial number for identifica- tion purposes. The serial number displayed in this message will match the serial number found on the product label located on the back of the 239.

• HARDWARE REVISION: This message identifies the internal hardware revision of the 239. The first letter of the 239 serial number must match the hardware revision identified in this message.

• DATE OF CALIBRATION: Each 239 is calibrated to exceed the specifications listed in Section

1.4: SPECIFICATIONS on page 1–7 using custom made test equipment. When all parameters have been calibrated and tested for proper operation the unit is stamped with the calibration dat e displayed in this message.

• DATE OF MANUFACTURE: This is the date the 239 was final tested at GE Multilin.

will be used by factory personnel to identify the matching product records. If an exact

0$,1352*5$09(56,21, 02'180%(5, and product order code

02' 180%(5 installed (maximum of 5). In this

02'180%(5s separated by a comma (i.e. 501, 502, 503).

02'

5-10 239 Motor Protection Relay GE Multilin

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6 239PC SOFTWARE 6 239PC SOFTWARE

239 INSTRUCTION MANUAL 6 239PC SOFTWARE 6.1 OVERVIEW

Although setpoints can be entered manually using the front panel keys, it is much easier to use a computer to download values through the communications port. A free program called 239PC is available from Multilin to make this as convenient as possible. With 239PC running on your personal computer under Windows it is possible to:

• Program/modify setpoint s

• Load/save setpoint files from/to disk

• Read actual values

• Monitor status

• Plot/print trends

• Read pre-trip data and trip record

• Get help on any topic

• Print the instruction manual fr om disk The 239PC software allows immediate access to all the featur es of the 239 with easy to use pull

down menus in the familiar Windows environment. The 239PC software can run without a 239 connected to a computer and save settings to a file. If a

239 is connected to a serial port on a computer and communications is enabled, the 239 can be pro- grammed from the displayed with the

Setpoint

Actual

screens. In addition, measured values, status and trip messages can be

screens.

The 239 communications is setup as shown in the figure below.

239 RELAY

POWER SUPPLY MODULE TO WALL PLUG

MULTILIN

RS232/RS485

COMPUTER

CONVERTOR

- +

RS232 CONNECTOR TO

COMPUTER COM PORT

TYPICALLY COM1 OR COM2

Figure 6–1: TYPICAL COMMUNICATIONS SETUP

6.2 HARDWARE CONFIGURATION

239RELAY SETUP PROGRAM

Setpoints

File

Actual

Diagnosis

Comms

MODE:

TRIP RECORD

2nd LastTrip

3rdLastTrip

4th LastTrip

5th LastTrip

ORMAL

Help

COMMUNICAL:

Cancel

CLEAR

Overload

None

819807A4.CDR

LAST

RIP

Cause

Phase A

Phase B

Phase C

Ground

Unbalance

TEMPERATURE

Degrees

RTD1Type

RTD1Temperature

RTD2Type

RTD2Temperature

RTD

3Type

RTD3Temperature

MOTOR: RUNNING

TRIPINFORMATION

ATA

CLEAR

Overload

100 A

30 A

50 A

10.5 A

30 %

Celsius

Stator

95 C

Bearing

75 C

Bearing

73 C

STATUS:OK

GE Multilin 239 Motor Protection Relay 6-1

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6 239PC SOFTWARE 6 239PC SOFTWARE

6.3 239PC VERSION

If the 239PC software is already installed, check if it needs to be upgraded as shown below. If the 239PC software is installed and is up-to-date then skip to 6.4: INSTALLING/UPGRADING 239PC on

page 6–3.

1. Select the Help > About 239PC menu item.

2. No upgrade is required if the two versions are identical.

239 Motor Pr otection Relay

CAUSE OF LAST TRIP: MECHANICAL JAM

TRIP

AUXILIARY

PICKUP

SERVICE

ALARM

ACTUAL

SETPOINT

STORE

RESET

GE Multilin

215 Anderson Avenue, Markham, Ontario Canada L6E 1B3 Tel:(905) 294-6222 Fax: (905) 201-2098

Internet: http://www.GEindustrial.com/multilin

COMMUNICATE

MESSAGE

VALUE

GE Power Management

239

MOTOR PROTECTION RELAY

Instruction Manual

Firmware Revision: 2.6x

239PC Software: 2.6x or newer

Manual P/N: 1601-0067-D9

CU S

Manufactured under an

ISO9002 Registered system.

Front page of manual.

6-2 239 Motor Protection Relay GE Multilin

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6 239PC SOFTWARE 6 239PC SOFTWARE

6.4 INSTALLING/UPGRADING 239PC

The following minimum requirements must be met for the 239PC software to operate on the com- puter.

• Windows

• 10MB free hard disk space If the 239PC software already exists and is being upgraded, then please note down exact path and

the directory name of the current installation because it will be required during the new installation process.

1. Start Windows.

2. Insert the GE Multilin Products C D into the appropriate drive (alternately, you can go to the GE Multilin website at www.GEindustrial.com/multilin to continue the installation—the steps are roughly the same).

3. The following window will b e displ ayed by you r default web browser onc e the CD dr awer, with the Product CD, is closed:

3.1 / Windows 95 or higher is installed and running

4. Use the mouse to click on Software. If 3.5” floppy disks are required, they may be created from the installation program on this CD, cre- ated from the GE Multilin website at www.GEindus- trial.com/multilin, or ordered directly from the factory.

5. The browser will display the GE Multilin product list in alphabetical order. Choose the 239 Motor Protection Relay from this list.

GE Multilin 239 Motor Protection Relay 6-3

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6 239PC SOFTWARE 6 239PC SOFTWARE

6. Select the 239PC program from the list of software and firmware it ems.

239 Softwa re

PC Program:

239PC V ersion 2.51 (.exe) [4M ]

•

R ela y Firmw are :

2.51 Firm w are serial# beginning w ith B or C (.zip) [58k]

•

2.51 Firm w are for serial# beginning with D (.zip) [59k]

•

7. The browser will launch the File D ownload window. Select the Run this program from its current loca- tion option and click OK. The following window will appear.

8. Verify that you wish to install 239PC by clicking Yes.

9. Click on CONTINUE WITH 239 PC VERSION 2.50 INSTALLATION to continue installing the PC software directly to your hard drive. If you wish to make a 1.44MB floppy disk containing the 239PC soft- ware, click on Start Copying.

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6 239PC SOFTWARE 6 239PC SOFTWARE

10. The install program will prompt for a destination folder.

11. If the program is not to be installed in the default directory, or 239PC is already installed in a dif-

ferent location, click on Browse and enter the complete path for 239PC. If 239PC is already installed, the old files will be replaced with new ones. Click Next to continue with the installation process once the destination directory is correct.

12. The 239PC install program will ask you to choose between Typical, Compact, and Custom setup

(Typical is fine for almost all cases). Choose the desired type of setup preferred and click Next to continue the installat ion process.

13. You will be prompted to choose a folder name to place the 239PC icon. Select a folder and click

Next to continue.

14. Click on Finish to complete the installati on of 239PC. It is rec ommended that you rest ar t Windows

before using the program.

The 239PC program may also be installed from the GE Multilin website at www.GEindustria l. com/m ultilin. Follow the instructions above for installation.

NOTE

GE Multilin 239 Motor Protection Relay 6-5

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6 239PC SOFTWARE 6 239PC SOFTWARE

6.5 239PC MENU STRUCTURE

6-6 239 Motor Protection Relay GE Multilin

Page 97

6 239PC SOFTWARE 6 239PC SOFTWARE

6.6 CONFIGURING 239PC

1. Start 239PC by double-clicking the 239PC icon in the GE Multilin folder (or alternate folder con-

taining the 239PC icon) or from the Start menu.

2. Once 239PC starts to execute, it will attempt to communicate with the relay. If communication is

established successfully, the screen and LEDs on the relay graphic shown in the 239PC window will display the same information as the actual relay.

GE Multilin 239 Motor Protection Relay 6-7

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6 239PC SOFTWARE 6 239PC SOFTWARE

3. If 239PC cannot establish communication with the relay, the following message will be displayed.

4. Click on Yes to edit the 239PC communication settings. This will display the COMMUNICATION/ COMPUTER window shown below.

5. Set Slave Address to match the relay address setpoint.

6. Set Communication Port # to the COM port where the relay is connected.

7. Set Baud Rate to match the relay baud rate setpoint.

8. Set Parity to match the relay parity setpoint.

9. If using the GE Multilin F485 converter, leave the Control Type setting as is.

10. Set Startup Mode to “Communicate with relay”.

11. Click the ON button to communicate with the relay and 239PC will notify when communications have been established with the relay. If it fails to communicate, check th e following:

• Ensure that the settings above match the relay settings.

• Ensure the COM port setting matches the COM port being used.

• Ensure the hardware is connected correctly as shown in Figure 6–1: TYPICAL COMMU- NICATIONS SETUP on page 6–1.

• Ensure the RS485 cable polarity is correct and connec ted to the correct relay terminals.

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6 239PC SOFTWARE 6 239PC SOFTWARE

6.7 239 FIRMWARE UPGRADE

a) STEP 1—SAVING AND PRINTING SETPOINTS

1. Save the 239 setpoints to a file by selecting Save As from the File menu.

2. 239PC will prompt for a file name and location. Choose an appropriate file name and directory then click OK to continue saving the setpoints.

3. Select Print Setup from the File menu.

4. The Print Setup dialog box (shown below) wil l appear. Select the desired information to be pr i nted, in this case Setpoints (All), and then click OK.

5. Select Print from the File menu.

6. Ensure the printer selected is setup and on-line and click OK to print setpoints.

b) STEP 2—LOADING NEW FIRMWARE INTO THE 239

1. Select Upgrade Firmware from the Communication menu.

2. The following window will appear. Select Yes to proceed or No to abort the process.

3. The file to be loaded into the 239 must match the hardware inside th e 239.

•If the 239 serial nu mber b egins wi th B or C, select the fi le begi nning with t he c haracter s 6 4C.

•If the 239 serial number begins with D, select the file beginning with the characters 64D.

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6 239PC SOFTWARE 6 239PC SOFTWARE

This is indicated in the following dialog box. Click OK to continue.

4. The Load Firmware dialog box appears. The firmware file name has the following format:

64 D 250 C4 000

Modification number (000 = none)

For GE Power Management use only Product firmware revision (e.g. 2.50). On the 239, this number is

found in Actual Values page A3 under

PROGRAM VER

Required product hardware revision. This letter must match the first character of the serial number located on the product label on the back of the relay

Product Name (64 = 239 Relay)

5. Locate the firmware file to be loaded into the relay and click OK to proceed.

6. The following dialog box will appear; selec t

• Yes to proceed

• No to load a different firmware file

• Cancel to abort the process

FIRMWARE VERSION/MAIN

6-10 239 Motor Protection Relay GE Multilin