Motortronics ME2 installation Guide

ME2 Series

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Micro AC Drives

INST ALLA TION & ST ART -UP

MANUAL

REV3
9081101MN

Motortronics

CTi Automation - Phone: [phone] - Fax: [phone] - Web: www.ctiautomation.net - Email: [e-mail]

ME2 Series

Micro AC Drives

Thank you for purchasing this Motortronics ME2 Series variable
frequency AC drive. When properly installed, operated and maintained,
the ME2 will provide a lifetime of reliable operation. It is mandatory
that the person who operates, inspects, and maintains this equipment
thoroughly reads and understands this manual. This will insure safe
and reliable operation of the controller.

This unit has been put through demanding tests at the factory prior to
shipment. Before unpacking check the following:

• Verify that the model number on the box matches your
purchase order.

• Inspect for possible shipping damage (if damaged, notify
the freight carrier and file a claim within 15 days of receipt).

After unpacking, please check the following:

• Verify that the label specifications match your application
requirement.

• Check all electrical connections and screws. Verify that
there is no visible damage to any of the components.

Warning! Do not service equipment with voltage applied!
Unit can be a source of fatal electrical shock! T o avoid
shock hazard, disconnect main power and wait until the
LED on the main control board goes out before working
on the control. Warning labels (not supplied) must be
attached to terminals, enclosure and control panel.

Unit does not provide overspeed protection or incorporate
current limiting control.

To obtain optimum operation from your ME2 Series drive, it is
strongly recommended that this manual is read and
understood.

Table of Contents

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Chapter 1 General Information ................................................ 1

1.1 Introduction

1.2 Specifications

1.3 Mounting Dimensions/ Terminal Block Location

Chapter 2 Power and Control Wiring ..................................... 5

2.1 Power and Control Wiring

2.2 Wiring Diagram

2.2.1 Power T erminal Block ( TM1 )

2.2.2 Control Terminal Block ( TM2)

2.2.3 External Control Signal Selection ( SW1 )

Chapter 3 Keypad Operation and Programming ................... 10

3.1 Keypad Operation

3.2 Easy Programming

3.3 List of Parameters

3.4 Parameter Function Description

Chapter 4 Fault Codes .............................................................. 25

4.1 Failure or Trip which cannot be reset by Reset Key

4.2 Failure or Trip which can be reset by Reset Key but cannot
be Auto Reset

4.3 Failure or Trip which can be Auto Reset or reset by Reset
Key

4.4 Operational Stop Indications

4.5 Operation Error Indications

Chapter 5 Other Information .................................................... 29

5.1 Selecting AC Line/Load Reactors

5.2 Record of Drive Settings

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Me2 Series Installation Manual

p

Chapter 1 - General Information

1.1- Introduction

The Motortronics ME2 Series is a high performance general-
purpose micro AC drive that incorporates a high efficiency
Pulse Width Modulated (PWM) design and IPM technology.
The output closely approximates a sinusoidal current
waveform to allow variable speed control of any conventional
squirrel cage AC induction motor.

1.2 - Specifications

1P2 thru 101: Single phase
Input Voltage
50/60 Hz (±5%)

Output Volt age
Control Method

Ratings

Motor KW
Motor HP
Current A
Capacity KVA
W eight lbs

Ratings

Motor KW
Motor HP
Current A
Capacity KVA
W eight lbs

110 ~ 120V (-15% ±10%)

2P2 thru 203: Single phase

200 ~ 240V (+10%/-15%)

401 thru 403: Three phase 380 ~ 460V

Sinusoidal wave PWM control (PNP type 12

- 24V)
Model Number (ME2-XXX-M)

1P2 1P5 101 2P2 2P5 201 202 203

0.2 0.4 0.75 0.2 0.4 0.75 1.5 2.2
1/4 1/2 1 1/4 1/2 1 2 3

1.42.34.21.42.34.27.510.5

0.53 0.88 1.6 0.53 0.88 1.6 2.9 4.0

1.51.51.51.61.71.83.83.8
Model Number (ME2-XXX-M)

401 402 403

0.75 1.5 2.2
123

2.3 3.8 5.2

1.7 2.9 4

3.5 3.5 3.6

Me2 Series

-1-

1.2 - Specifications

Approvals
Mounting

Digital Display

UL, cUL, CE
Direct or optional DIN rail mount (for <
drives)
Indicates, frequency, parameter
selection, fault record

1.2.1 - Frequency Control

1 - 200 Hz
Digital: 0.1 Hz (0-99.9Hz)

1 Hz (100 -120 Hz)
Analog: 1 Hz (60Hz)

Digital Keypad; 0-10VDC,
0-20mA, 10K Pot

Frequency upper/lower limit
4 ~ 16 kHz

Frequency Control

Range

Resolution

Setting
Signal

Limit
Carrier

Frequency

1.2.2 - Control Characteristics

1 HP

Me2 Series

-2-

1.2.3 - Protective Functions

Overload 150% for 1 minute
Over-voltage DC-bus voltage > 410 V
Under-voltage DC-bus voltage < 200 V

Momentary Power
Loss

0-2 seconds (can be restarted
via speed search)

Stall prevention

Output short circuit Provided by electronic circuit

Protective Func tio n

Ground fault

Other protection

During accel/decel/c onst ant
speed

Provided by electronic circuit
during start-up and run

Heatsink fin overtemp, current
limit

1.2.4 - Environmental Specifications

Ambient Temperat ure

Humidity
Vibration

EMC

Enclosure

- 10 to + 40° C
(14° to 104° F)

≤ 95% relative, non­condensing

Under 1G
Class A filter standard in all

200 volt units
rated 1/4 thru 1 HP;
Optional Class B for all other
units

Panel Mount / IP20

Me2 Series

-3-

1.3 - Mounting Dimensions

C

DATA

ENT

RESET

RUN

DSP
FUN

STOP

TM2
TM1

A

D

GROUND

FRONT VIEW SIDE VIEW

TM2

TM1

F

C

BOTTOM VIEW

E
B

ME2 Dimensions

Model

ME2-1P2-M
ME2-1P5-M
ME2-2P2-M
ME2-2P5-M
ME2-201-M
ME2-202-M
ME2-203-M

ABCDEF

5.2 2.8 4.6 4.6

Overall

Dimensions

Me2 Series

-4-

Mounting

Dimensions

2.4 0.18

4.25 0.186.765.63 4.65 5.0

Me2 Series Installation Manual

Chapter 2 - Power and Control Wiring

2.1 - Power and Control Wiring

This chapter deals with recommended power wiring practices
for the ME2 Series AC drive. Remember, you must always
conform to the National Electrical Code (NEC) and any
applicable local codes. Always make sure the keypad is off,
the LEDs are off, and the DC bus is discharged before adding
or changing any wiring.

Warning! This section involves working with potentially

lethal voltage levels! Caution must be used to
prevent personal harm. Do not service
equipment with voltage applied! T o avoid shock
hazard, disconnect main power and wait until
the LED on the main control board goes out
before working on the control. Warning labels
(not supplied) must be attached to terminals,
enclosure and control panel.

• DO NOT touch any circuit components while AC
power is on or immediately after the main AC

power is disconnected from the unit. Wait until
the LED on the control board goes out.

• DO NOT make any connections to the drive
before the unit is disconnected from the AC

power. Failure to adhere to this warning could
result in serious or lethal injury.

• Only use in a pollution degree 2 macro--

environment or equivalent.

Me2 Series

-5-

• Never connect the input power wiring to the
drive terminals T1, T2, or T3.

• Always use UL/CSA approved wire and ring lugs.

• Always make a positive ground termination to
the Earth terminal of the drive.

• Use copper conductors only and size field wiring
based upon 75º wire only.

Model

Number

ME2-1P2 8 10
ME2-1P5 12 20
ME2-2P2 4.5 10
ME2-2P5 8 10
ME2-201 12 20
ME2-202 20 30 12 AWG
ME2-203 30 40 12-10 AWG 10 AWG

Maximum

Input Fuse

(Time Delay)

Maximum Input
Circuit Breaker

(Amps)

Power
Wiring

14-12 AWG

Control

Wiring

22-18 AWG

Copper
Ground

Wiring

14 AWG

Notes:

1. 240 VAC units are suitable for use on a circuit capable
of delivering not more than 5000 RMS symmetrical
amperes, 240 Volts maximum.

2. Always ensure that values used conform to NEC and
all applicable local codes.

Note: Keypad operator cannot be removed.

Me2 Series

-6-

2.2 - Me2 Wiring Diagram

Braking Resistor

(Optional)

P

R

(U) T1
(V) T2
(W) T3

(Internally Supplied)

1

2

M

Multi-function

Output

Grounding

Multi-function

Input

10K Ω

Frequency

Meter

Incoming

Power

0~10V

3
4
6
7
5
8
9

10

11

L1 (R)
L2 (S)
L3 (T)

FWD
REV
SP1
RST

12V
+10V
MVI

(0~10V/0~20mA, 4-20mA)

0V (FM-)

FM+

*NOTE: L3(T) is only used on ME-202 and ME-203

2.2.1- Power Terminal Block (TM1)

Notes:

1. Tightening torque for TM1
is 1 lbs-ft or 12 lbs-in.

2. Use copper conductors
only. Size field wiring
based on 75ºC wire only.

3. Wire voltage rating must
be a minimum of 300V.

4. Ratings of the terminal
block (TM1) are 300V, 15A

Symbol Function Description

L1 (R)

AC power source input

L2 (S)

L3 (T)

P

External braking resistor

202/203/401/402/403

R

T1 (U)

Drive output to the motor

T2 (V)
T3 (W)

Me2 Series

-7-

(only for Me2-

2.2.2- Control Terminal Block ( TM2 )

Function Description

1

Programmable output (Fn21)
Rated 250VAC/30VDC, 1A

2
3FWD
4REV
5 +12V
6SP1
7 RESET

Operation control terminals (refer to Fn03)

Common point of terminals 3 / 4 / 6 / 7
Multifunction input terminals (refer to Fn20)
Multifunction input terminal 2 (Fn20)

8+10V

0V

9 Analog input point

(FM-)

10

11 FM+

Analog common
point

Analog output
positive connection
point

Power terminal of potentiometer
(High side of potentiometer)

Analog frequency signal input
terminal (wiper of potentiometer
or positive terminal of 0~10V /
4~20mA/ 0~20mA)

Analog signal common point
(Low side of potentiometer or
negative terminal of 0~10V /
4~20mA / 0~20mA)

Multifunction analog output
terminal
Output terminal signal is
0~10VDC

Notes:

1. Tightening torque for TM2 is 0.42 lbs-ft or 5.03 lbs-in.

2. Use copper conductors only. Size field wiring based
on 75ºC wire only.

3. Wire voltage rating must be a minimum of 300V.

4. Control wiring should not run in the same conduit or
raceway with power or motor wiring.

Me2 Series

-8-

2.2.3- External Control Signal ( SW1 )

SW1 is located in a compartment on the side of the AC
drive.

Switch External Signal Type

0~20mA analog signal ( When Fn11 is set to 1 )

I

V

I

V

1
2
3

4-20mA analog signal ( When Fn11 is set to 2 )

1
2

0~10 VDC analog signal ( When Fn11 is set to 1 )

3

Remove cover to reveal switch

Me2 Series

-9-

Me2 Series Installation Manual

Chapter 3 - Keypad Operation and Programming

3.1 - Keypad Operation

Refer to this section if the
keypad will be used to control
the drive and if no external
control connections are
required. This section can also
be used when testing the drive
without control connections.

Note: Keypad operator cannot be
removed.

3.2 - Easy Programming

The ME2 Series has two basic loops:
Operation Loop- changes frequency to increase/decrease
motor speed
Programming Loop- changes function settings

Me2 Series

-10-

Programming

Loop

Change

Function?

Press this key to

DSP

display function

FUN

number (FXX)
Press this key to

∧∧

∧

∧∧

∧∧

∧

∧∧

reach function
to be changed

Press this key to

DATA

read existing

ENT

function setting

Press this key to

∧∧

∧

∧∧

∧∧

∧

∧∧

go to new setting

Press this key to

DATA

enter new

ENT

function setting

Press this key to return to

DSP

frequency display or skip this

FUN

key to continue changing functions.

POWER ON

Displays

Frequency

Note:

DSP
FUN

∧∧

∧

∧∧

∧∧

∧

∧∧

RUN

STOP

This key allows
you to switch
from one loop to
the other

Operation

Loop

Change

Frequency?

Press this key to
reach function to
be changed

Press this key to
start/stop the
motor

Me2 Series

-11-

3.3- List of Parameters

Function FN Function Description Unit Range

0 Factory Adjustment 000

Accel/Decel time

Operation mode 3

Motor rotation

direction

V/F patt er n 5

Frequency

upper/lower limit

SP1 frequency 8 SP1 frequency [Note: 2] 10 Hz

JOG frequency 9 JOG frequency [Note: 2] 6 Hz

Operation

Control

Frequency

Control

Notes:

1. Can be changed during running mode.

2. If the setting is between 0.1 and 1, the display

3. Refer to Fn25.

4. Factory set default settings depend on Fn25

1 Acceleration time [Notes: 1, 2] 0.1 sec 0.1~999 S 5.0 S
2 Deceleration time [Notes: 1, 2] 0.1 sec 0.1~999 S 5.0 S

0: Forward / Stop, Stop / Reverse
1: Run / Stop, Reverse / Forward

0: Forward

4

1: Reverse
[Note:1]

V/F pattern setting
[Notes: 3, 4]

Frequncy upper limit

6

[Notes: 2, 3, 4]

7 Frequency lower limit [Note: 2] 000

0: Keypad

10

1: External control

0: Keypad
1: 0 ~ 10V, 4 ~ 20mA, 10K pot
(no offset)

11

2: 2 ~ 10V, 4 ~ 20mA
(with 20% offset)

1 0~1 000

1 0~1 000

11~64

0.1Hz 0 . 0 ~ 2 0 0 Hz

1 0~1 000

1 0~2 000

increments in 0.1 units. If the setting is equal to or
greater than 1, the display increments in units of 1.

programming.

Me2 Series

-12-

Factory
Setting

60 Hz

3.3- List of Parameters (continued)

Function FN Function Description Range

Carrier frequency 12 Carrier frequency setting 1~10 5

Torque

compensation

Stopping mode 14

DC

Braking

Setting

Electronic

Thermal

Overload

Torque

13

compensation gain
[Note: 1]

0:Decelerate to stop
1: Coast to stop

15 DC braking time 0.0~25.5 S 0.5 S

DC braking injection

16

frequency

17 DC braking level 0.0~20.0% 8.0%

Based on drive rated

18

current

Unit

1

0.1%

1

0.1 sec

0.1 Hz

0.10%

1%

0.0~10.0% 000

0~1 000

1~10 Hz 1.5 Hz

0-200% 100%

Factory
Setting

1: Jog
2: SP1
3: Emergency Stop
4: External Base Block
5: Reset
6: SP2

Programmable

Inputs

19 Multifun ction Input (TM1) 2

20 Multifun ction Input (TM2) 5

Notes:

1. Can be changed during running mode.

2. If the setting is between 0.1 and 1, the display
increments in 0.1 units. If the setting is equal to or
greater than 1, the display increments in units of 1.

3. Refer to Fn25.

4. Factory set default settings depend on Fn25
programming.

Me2 Series

-13-

3.3- List of Parameters (continued)

Function FN Function Description Unit Rang e

Programmable

Output

Reverse Mode

Lockout

Momentary

Power
Loss Restart
Auto Restart 24 Number of auto-restart times 1 0~5 000

Factory Setting 25

SP2 Frequency 26 SP2 Frequency [Note: 2] 0.1 Hz 0.0~200 20
SP3 Frequency 27 SP3 Frequency [Note: 2] 0.1 Hz 0.0~200 30

Software

version

Fault History 30 Last 3 faults in memory

21 Multifunction Output 3

0: REV run enabled

22

1: REV disabled
0: Enabled

23

1: Disabled

010: Constants initialized
to 50 Hz system
020: Constants initialized
to 60 Hz system

28 Reserved for future use
29 CPU program version 1.8

Notes:

1. Can be adjusted during running mode.

2. If the setting is between 0.1 and 1, the display
increments in 0.1 units. If the setting is equal to or
greater than 1, the display increments in units of 1.

3. Refer to Fn25.

4. Factory set default settings depend on Fn25
programming.

1: Running
2: At set speed
3: Fault

1 0~1 000

1 0~1 000

Factory

Setting

000

Me2 Series

-14-

3.4 - Parameter Function Description

3

5

p

p

Com

3

5

p

Com

3

1

0

Fn00 Factory set. Do not change.
Fn01 - Acceleration time

Factory Setting = 5 seconds; Range = 0.1 ~ 999 sec
Fn02 - Deceleration time

Factory Setting = 5 seconds; Range = 0.1 ~ 999 sec

1. Acceleration/deceleration time calculation formula:
Acceleration time = Fn01 x Setting Frequency

Deceleration time = Fn02 x Setting Frequency

Fn03 - Operation mode selection - Factory Setting = 000
Range = 0 : Forward / Stop , Reverse / Stop

= 1 : Run / Stop , Forward / Reverse

60Hz

60Hz

FN03 =

TM2 PIN

TM2 PIN4

Fn3 = 0

Fn3 = 1

4

Forward

Forward

FWD/Sto
REV/Sto

Reverse

4

Reverse

(note)

*

*

Note: Fn03 active only when Fn10 = 1 (external control)

*Reverse command is ignored when Fn22 = 1

Me2 Series

-15-

Run/Sto
FWD/REV

FN03 =

Fn04 - Motor rotation direction
Factory Setting = 0
Range = 0 : forward

= 1 : reverse

Note: When Fn22 = 1 : (Reverse disabled),
Fn04 cannot = 1. Keypad indication will display “LOC”.

Fn05 - V/F pattern
Factory Setting = 4; Range = 1- 6

Select one of six fixed V/F patterns :

Application
Fn5 Setting

60 Hz

V/F pattern

General Application High starting torque

4

100

V (%)

B

C

1

3.0

60 120

V (%)

100

B

C

Hz

1

5

3.060120

Hz

Variable torque

V (%)

100

B

C

1

3060120

6

Hz

Application
Fn5 Setting

50 Hz

V/F pattern

General Application High starting torque

1

100

V (%)

B

C

2.5

1

V (%)

100

B

C

Hz

50

120

1

Me2 Series

-16-

2.5

2

Variable torque

3

V (%)

100

B

C

Hz

1

120

50

25 50 120

Hz

Fn06 - Frequency upper limit
Factory Setting = 60Hz; Range = 0.0 ~ 200Hz

Fn07 - Frequency lower limit
Factory Setting = 0.0; Range = 0 ~ 200 Hz

Notes: 1. If Fn07 = 0 Hz, and the frequency is equal to 0Hz,

the drive will stop at 0 speed.

2. If Fn07 > 0 Hz, and the frequency is less than or
equal to Fn07, the drive output will = Fn07.

Fn08 - SP1 frequency
Factory Setting = 10 Hz; Range = 0 ~ 200 Hz

Fn09 - Jog frequency
Factory Setting = 6 Hz; Range = 0 ~ 200 Hz

1. When Fn19 or Fn20 = 2 and multifunction input
terminal is on, the drive will operate at SP1 frequency
(Fn08)

2. When Fn19 or Fn20 = 1 and multifunction input
terminal is on, the drive will operate at Jog frequency
(Fn09)

3. The priority of using frequency reference is : Jog >
SP1 > Keypad setting or external control signal

Fn10 - Operation Control
Factory Setting = 0
Range = 0 : Keypad operated

= 1 : External control operated (emergency stop on

the keypad is still active)

Me2 Series

-17-

Fn11 - Frequency control
Factory Setting = 0
Range = 0 :Frequency reference is set

via the keypad

= 1 :Frequency reference is set via

the potentiometer or analog
signal on TM2 with no offset

Fn6

0mA0V4mA

Fn11=1

Fn11=2

20mA

10V

( 0 ~ 10V / 0 - 20mA )

= 2 :Frequency reference is set via the

potentiometer or analog signal on TM2

with 20% offset (4-20mA )
Note: When Jog frequency or SP1 frequency is switched
on, the frequency is set via the Jog or SP1 speed. The
arrow buttons on the keypad are disabled during
acceleration /deceleration modes and when the multi­function terminal is active. Original settings will be restored
after Jog or SP1 connection is OFF. Ensure correct

selection of SW1 (refer to 2.2.3).

Fn12 - Carrier frequency
Factory Setting = 5; Range = 1 ~ 10 (4 ~ 16 kHz)

Although IGBT type drives can provide low noise under
normal operation, it is possible that the high carrier
frequency may interfere with external electronic
components (or other drives) or even cause vibration in the
motor. Adjusting the carrier frequency can eliminate these
problems.

FN12 Carrier Frequency FN12 Carrier Fre quenc y

1 4 kHz 6 10 kHz
2 5 kHz 7 12 kHz
3 6 kHz 8 14.4 kHz
4 7.2 kHz 9 15 kHz
5 8 kHz 10 16 kHz

Me2 Series

-18-

Fn13 - Torque compensation gain
Factory Setting = 0; Range = 0 ~ 10 %

Drive output will be the B and C voltage points on the V/F
pattern (refer to Fn05) plus the Fn13 setting. This setting
will enhance the output torque. Note: When Fn13 = 0, the
torque boost function is disabled.

Fn14 - Stopping mode
Factory Setting = 0
Range = 0 : Deceleration to stop

= 1 : Coast to stop

If Fn14 = 0

When the drive receives the stop command, it decelerates
to the frequency set point of Fn16. The DC braking will
start at the level set in Fn17. After the time duration (set in
Fn15), the drive will stop.

If Fn14 = 1

The drive output stops immediately after receiving a stop
command. The motor will enter a free running state and
coast to a stop.

Fn15 - DC braking time
Factory Setting = 0.5; Range = 0 ~ 25.5 seconds

Fn16 - DC braking starting frequency
Factory Setting = 1.5; Range = 1 ~ 10 Hz

Fn17 - DC braking level
Factory Setting = 8.0; Range = 0 ~ 20 %

Me2 Series

-19-

Fn18 - Electronic Thermal Overload
Factory Setting = 100; Range = 0 ~ 200 %

1. Function of the electronic thermal overload
protecting the motor

1. Motor rated current = Drive rated current x Fn18 or
Fn18 = Motor rated current / drive rated current

Derating

Fn5 = 4,5,6
60 Hz standard motor
%

100

90
60

20 60

Fn5 = 1, 2, 3
50 Hz standard motor
%

Derating

100

90
60

Hz

20 50

Hz

2. When the load is within 100% of the motor rated current,
the drive will operate continuously. When the load
reaches 150% of the motor rated current, the drive will
trip within 1 minute.

3. After the electronic thermal overload is activated, the
drive output is shut off immediately. OL1 will flash on
the keypad. To resume operation, push the RESET
button or activate the external reset terminal.

4. When operating at low speeds, the motor’s heat
dissipation capability is reduced. The electronic thermal
overload activation level is also reduced. To ensure
proper motor protection, choose an appropriate Fn05
setting.

2. Function of the electronic thermal overload
protecting the drive

1. When the load is within 103% of the drive rated current, the
drive will operate continuously. When the load reaches 150%
of the rated current of the drive, the drive will trip within 1
minute.

Me2 Series

-20-

2. After activation of the drive’s

electronic thermal overload, the
drive output shuts off immediately .
OL2 will flash on the keypad. To
resume operation, push the

Minute

(1)

(2)

1.0

150

100

RESET button on the keypad or
activate the external reset terminal.

Fn19 - Multifunction input (TM2 - Pin 6)
Factory Setting = 2; Range = 1 ~ 6

Fn20 - Multifunction input (TM2 - Pin 7)
Factory Setting = 5; Range = 1 ~ 6

1. Fn19, Fn20 = 1 : JOG

2. Fn19, Fn20 = 2 or 6 : Preset Speed Control

Fn Setting

Fn 19 = 2
Fn 20 = 6

Fn 19 = 6
Fn 20 = 2

SP1

Terminal

ON OFF FN 08 (SP1)

OFF ON Fn 26 (SP2)

ON ON Fn 27 (SP3)
ON OFF F n 26 (SP2)

OFF ON FN 08 (SP1)

ON ON Fn 27 (SP3)

Reset

Terminal

Output

Frequency

3. Fn19, Fn20 = 3 : External emergency stop signal

When the external emergency stop signal is activated, the
drive decelerates to a stop (ignoring the setting in Fn14).
Keypad flashes E.S. after stop. When the emergency stop
signal is deactivated, turn the RUN switch OFF and then ON
again (if Fn10 = 1) or push the RUN key (if Fn10 = 0). The
drive will resume operation and restart. If the emergency
stop signal is removed before the drive stops, it will still execute
emergency stop.

4. Fn19, Fn20 = 4 : External Base Block (immediate

shut off)

When the external base block signal is activated, the

Me2 Series

-21-

Percentage of
Current

drive output immediately shuts off (ignoring the setting
in Fn14). Keypad will flash b.b. after stop. After the base
block signal is deactivated, turn the RUN switch OFF
and then ON again (if Fn10 = 1) or push the RUN key (if
Fn10 = 0). The drive will restart from the starting
frequency.

5. Fn19, Fn20 = 5 : Reset when drive is in fault
condition

Fn21 - Multi-function output
Factory Setting = 3
Range= 1 : Run mode signal

= 2 : At frequency signal
= 3 : Fault signal

Fn22 - Reverse mode lockout
Factory Setting = 0
Range= 0 : REV command enabled

= 1 : REV command disabled

Note: When Fn04 is set to 1 (reverse), Fn22 cannot be set
to 1. Keypad will display “LOC”. Fn04 must be changed to
0 setting (forward) before Fn22 can be set to 1.

Fn23 - Restart after momentary power loss
Factory Setting = 0
Range= 0 : Restart enabled

= 1 : Restart disabled

1. When AC power temporarily drops below the low volt age
protection level the drive will stop immediately. If the power
source returns within 2 seconds, the drive can restart via
speed search (start searching from the previous operating
frequency) or fault, displaying “LV-C”.

2. When Fn23 = 0, if the temporary power loss is less than
2 seconds, the drive will resume operation via speed
search 0.5 seconds after power returns. Fn24 does not

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limit the number of restarts. If the temporary power loss
is longer than 2 seconds, automatic restart will be
determined by the setting of Fn24.

3. When Fn23 = 1, the drive will stop immediately after the

temporary power loss and display “LV -C” on the keyp ad.
The drive will not restart automatically. (Not controlled
by Fn24)

Fn24 - Number of Auto-restart times
Factory Setting = 0; Range = 0 ~ 5

1. When Fn24 = 0, the drive will not automatically restart

if the power loss period is longer than 2 seconds.

2. When Fn24 > 0, the drive will resume operation via

speed search 0.5 secs after power returns. The drive
will accelerate or decelerate to the frequency setting.

3. When the drive is set to decelerate to stop (Fn14) or

DC braking (Fn17) the transient restart procedure is not
performed.

4. When either of the following occur, the auto-restart

counter will be reset:

1. No additional faults (during operation or stop)
occur within 10 minutes of restart.

2. RESET is pressed or external RESET is

activated.

Fn25 - Factory setting - Factory Setting = 000
Range= 010 : Constants set for 50Hz system

= 020 : Constants set for 60Hz system

1. When Fn25 is set to 010, all parameters are restored to
settings for 50Hz operation. The settings of Fn05 and
Fn06 are reset to 1 and 50 respectively. Fn25 is restored
back to 000 after the reset process is complete.

2. When Fn25 is set to 020, all parameters are restored to
the original factory settings for 60Hz operation. The

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settings of Fn05 and Fn06 are reset to 4 and 60
respectively. Fn25 is restored back to 000 af ter the reset
process is complete.

Fn26 - SP2 Frequency
Factory Setting = 20 Hz; Range = 0.0 ~ 200 Hz

1. Fn26 establishes the second of three preset command
frequencies. Used to configure a specific speed for multi­step applications.

Fn27 - SP3 Frequency
Factory Setting = 30 Hz; Range = 0.0 ~ 200 Hz

1. Fn27 establishes the third of three preset command
frequencies. Used to configure a specific speed for multi­step applications.

Fn28 : Reserved
Fn29 - Software (program) version

- Factory Setting = 1.8

Fn30 : Fault trace

1. Keypad will indicate the sequence of the occurrence
of faults by location of the decimal point:

x.xx = the most recent fault
xx.x = the previous fault
xxx. = the earliest fault in the record

2. When entering the Fn30 function, the x.xx record will
be displayed first. Pressing the /\ button will read out
xx.x then xxx. then x.xx consecutively.

3. When entering Fn30 function, if the RESET button is
pressed, the fault record will be cleared. Indication
display will show -.--, --.- and ---.

4. Example: When the content of fault memory indicates
O.CC, the latest fault was OC-C (over current during
constant speed).

Me2 Series

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Me2 Series Installation Manual

Chapter 4 - Fault Codes

4.1 - Failure or Trip which cannot be reset by Reset Key

FAULT CODE CONTENT PROBABLE CAUSE WHAT TO DO

Program Error High electronic noise

CPF

EEPROM error EEPROM defective Replace Drive

EPR

Install RC type suppressor on
all contactor/brake coils

OV

LV

OH

Over voltage
in stop mode

Low voltage

in stop mode

Heatsink overheat
during stop mode

Detection circuit is
damaged

1. Input voltage too low

2. Detection circuit is
damaged

1. Ambient temperature is
high or ventilation is poor

2.Detection circuit is
damaged

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Replace Drive

1. Correct Input voltage

2. Replace Drive

1. Replace Drive

2. Improve Ventilation

4.2 - Failure or Trip which can be reset by Reset Key
but cannot be Auto Reset

FAULT CODE CONTENT PROBABLE CAUSE WHAT TO DO

Over-current

OC

during stop mode

OL1 Motor over-load

OL2 Drive over-l oad

Detection circuit failure Replace Drive

1. Excessive load

2. Incorrect V/f pattern

3. Improper Fn18 setting

1. Excessive load

2. Incorrect V/f pattern

1. Select a larger HP unit

2. Select correct V/f pattern

3. Adjust Fn18 according to
instructions

1. Select a larger HP unit

2. Select correct V/f pattern

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4.3 - Failure or Trip which can be Auto Reset or reset

by Reset Key

FAULT CODE CONTENT PROBABLE CAUSE WHAT TO DO

Over-current

OCS

during start

Over-current
during

OCA

acceleration

Over-current

OCC

during constant
speed

Over-current

OCd

during
deceleration

Over-current

OCb

during braking

Over-voltage
during constant

OVC

speed operation

Low Voltage
during constant

LVC

speed

Overheat during

OHC

constant speed

1. Motor is shorted

2. Motor is grounded

3. Transistor module
damaged

1. Acceleration time setting
too short

2. Wrong V/f pattern

3. Motor exceeds unit rating

1. Transient loading

2. Input voltage fluctuations

1. Deceleration setting
too short

DC braking frequency,
braking voltage, or braking
time setting too high

1. Deceleration time is set
too short or load inertia is
too high

2. Input voltage fluctuations

1. Input voltage too low

2. Input voltage fluctuations

1. Load is too great

2. Ambient temperature too
high or poor ventilation

1. Inspect/repair motor

2. Remove grounding point

3. Replace Drive

1. Extend acceleration time

2. Select correct V/f pattern

3. Select larger HP unit

1. Check load condition

2. Install a reactor between the
power supply and the Drive

1. Extend deceleration time

Reduce settings of Fn15,
Fn16, or Fn17

1. Extend deceleration time

2. Correct line voltage problem

1. Correct input voltage

2. Correct line voltage

1. Check load

2. Limit ambient temperature
or improve ventilation

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4.4 - Operation Stop Indications

FAULT CODE CONTENT

SP0

Zero speed stop

Keypad

SP2

emergency stop

External

E.S.

emergency stop

External BASE

b.b.

BLOCK

An SP0 fault code can only occur when Fn7 is set to 0.
If an SP0 fault code occurs and Fn11=0, use the keypad to
increase the speed above 1 Hz.
If an SPO fault code occurs and Fn11=1, increase the
value of the external analog signal.

If Fn10 = 1 and the STOP key on the keypad
is pressed during operation, the drive will
stop according to the setting in Fn 14 and stop.
Keypad will flash E.S. aft er stop.
(Refer to instruction fo r F n19 for details.)

When the external emergency stop si gnal is activated
via the multi-function input terminal, the drive wi ll
decelerate and stop. Keypad will flash E.S. after stop.
(Refer to instruction fo r F n19 for details.)

When the external BASE BLOCK signal is activated
via the multi-function terminal, the drive output will
stop immediately and flash b.b. for indication.
(Refer to instruction fo r F n19 for details.)

WHAT TO DO

4.5 - Operation Error Indications

FAULT CODE CONTENT PROBABLE CAUSE WHAT TO DO

Motor directi on

LOC

Keypad operation

ER1

Parameter setting

ER2

1. Attempted to reverse
direcion when Fn22 = 1

locked

2. Attempted to set Fn2 2 to
1 when Fn04 = 1

1. Press UP or DOWN arrow
keys when Fn11 = 1 or
under SP1 operation

2. Attempted to to change
Fn29

error

3. Attempted to change
parameter that cannot be
changed during run mode.
(Refer to parameter list)

1. Fn6 < or = Fn7 1. Change so Fn6 > Fn7

error

1. Change Fn22 to 0

2. Change Fn04 to 0

1. Use UP or DOWN
arrow keys to adjust
frequency setting after
changing Fn11 = 0

2. Do not change Fn29

3. Change function during
stop mode

Me2 Series

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Me2 Series Installation Manual

Chapter 5 - Other Information

5.1 - Selecting AC Line/Load Reactors

Model

ME2-2P2-M 3.0 7.0
ME2-2P5-M 5.2 4.2

ME2-201-M 9.4 2.1
ME2-202-M 19.0 1.1
ME2-203-M 25.0 0.71

Current Value ( A ) Inductance ( m H )

Reactor

Me2 Series

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5.2 - Record of Settings

CTi Automation - Phone: [phone] - Fax: [phone] - Web: www.ctiautomation.net - Email: [e-mail]

Customer

Application

Address

Fn## Fn## Fn##

Fn00 Fn11 Fn22

Fn01 Fn12 Fn23

Fn02 Fn13 Fn24

Fn03 Fn14 Fn25

Fn04 Fn15 Fn26

Fn05 Fn16 Fn27

Fn06 Fn17 Fn28

Fn07 Fn18 Fn29

Fn08 Fn19

Fn09 Fn20

Fn10 Fn21

Model

Telephone

Value ValueValue

Fn30