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VTS Series AC Drive Fault Diagnostics Indications

  • 2021-07-20 12:02:43
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The following fault code will be displayed on the keypad, the fault contact output operates too. Even if a fault is the same, they are displayed differently on LCD keypad and LED keypad. These are all explained in the below table. For details, refer to the following table to identify and correct the cause of the fault.


LCD keypad

LED keypad

F015

value

Fault Name

Possible causes

Corrective actions

Err01

EPEr

1

External fault

Digital input fault is ON

Check the corresponding digital input

Err02

EoL1

2

Drive overload

Power supply voltage too low

Check the power supply voltage

Start when the motor is spinning

Restart after the motor at standstill

Overloading for a long time

Reduce overload time and reduce load

Drive power selection is too small

Replace with a suitable drive

Err03

EoL2

3

Motor overload

Power supply voltage too low

Check the power supply voltage

Motor stall or load suddenly changed

Check motor load and drive ratings

V/F curve setting are not correct

Adjust V/F curve and torque boost

Err04

EoH1

4

IGBT over temperature

Ambient overtemperature

Check ambient conditions

Fan failure

Check air flow and fan operation

Blockage of air duct

Check heatsink fins for dust pick-up

Output current too high

Check the load and parameter

Check motor power and drive power

Temperature detect circuit failure

Seek for technical support

Err05

EoH2

5

Motor over temperature

Motor temperature too high

Improve ventilation and heat dissipation

Thermistor resistance is bnormal

Check the thermistor

Setting motor sensor protection threshold is improper

Check the parameter seting

Err06

EdL1

6

Encoder fault

Encoder connection is incorrect

Change encoder wiring

The encoder has no signal output

Check the encoder and power supply

Encoder parameters are not correctly

Check the encoder parameters

Err07

EoC

7

Over current

Power supply too low

Check the power supply voltage

Load inertia is too high

Extended acceleration time

Motor parameters are not correctly

Set motor parameters correctly

Ramp-up time was set too short

Extended acceleration time

The drive power mismatch

Replace with a suitable drive

Current controller not correctly set

Set current controller parameters correctly

Err08

EFAL

8

Module protection

Module failure

Seek for technical support

UVW short-circuited to ground

Check whether the output wiring is short-circuited to ground

DC bus voltage under voltage

(75kW)

Check the input power supply

Built-in brake unit abnormal

(75kW)

Seek for technical support

Rectifier or module overheated

(75kW)

Seek for technical support

The pre-charged contactor closes abnormally (185kW)

Check the input power supply

Poor contact of the internal connectors

Ask professional technicians for maintenance

Err09

EoU

9

Over voltage

Motor short circuit to ground

Check the motor and motor wiring

Start when the motor is spinning

Restart after the motor at standstill

Load inertia is too large

Use appropriate dynamic braking unit

Deceleration time is too short

Extend the deceleration time

The input voltage is too high

Check the input power supply

Err10

ELU

10

Under voltage

The input voltage is too low

Check the input power supply

Abnormal switching power supply

Seek for technical support

Err11

EIPF

11

Encoder lost CD phase

CD signal connection is abnormal

Check the encoder and wiring

Err12

EoPF

12

Output phase loss

Motor failure

Replace a new motor

Motor cable is broken

Replace a new motor cable

Thermal relay failure (if is used)

Check thermal relay

Output detection circuit failure

Seek for technical support

Err13

EEPr

13

EEPROM abnormal

EEPROM read/write abnormal

Seek for technical support

Err14

ELIC

14

Unauthorized

Unauthorized

Seek for technical support

Err15

ELoS

15

PID feedback disconnection

PID feedback disconnection detection setting is wrong or PID feedback disconnection

Check PID feedback disconnection value and detection time.

Check the PID feedback cable

Err16

EoUt

16

PID feedback has excessed upper limit

PID feedback exceeds the allowable range

Check whether the actual feedback value exceeds the set allowable range

Err17

EECT

17

ECT communication failed

ET1100 communication failed

Seek for technical support

Err18

ECAn

18

CAN Communication failed

CAN communication failed

Seek for technical support

Err19

EETE

19

EtherCAT is disabled

EtherCAT is disabled

Seek for technical support

Err20

EDPE

20

PROFIBUS DP communication failed

PROFIBUS DP Communication failed

Check PROFIBUS DP wiring and related parameter settings

Err21

Eunk

21

Reserved

Err22

EES

22

Modbus communication time out

Incorrect baud rate setting

Set the baud rate correctly

The read and write parameter address is incorrect or the sending and receiving time interval is not suitable

Check the parameter address and check the read and write time interval

Communication timeout setting is inappropriate

Check the Modbus timeout time

Modbus communication disconnection

Check the communication wiring

Poor contact of Keypad

Check the keypad port

Err23

EOSE

23

Encoder 1 direction is opposite to encoder 2

Encoder 1 direction is opposite to encoder 2

Check the encoder 1 direction and encoder 2 direction

Err24

EAIU

24

Analog input disconnection

The analog disconnection function is turned on, and the analog input value is less than the analog disconnection value

Check the analog input voltage is normal

Check the analog disconnection value setting

Check the analog gain and other related parameters setting

Err25

EAIO

25

Analog input has exceeded upper limit

The analog alarm function is turned on, and the analog input value is greater than the upper value

Check whether the analog input voltage is normal

Check whether the analog upper limit is set properly

Check whether the analog gain and other related parameters are set properly

Err26

ECUr

26

Current detection abnormal

The current detection abnormal

Seek for technical support

Err27

EZ1r

27

Encoder 1 phase Z capture failed

Abnormal z-phase pulse capture of the encoder 1

Check the encoder 1 Z phase wiring

Err28

ESTL

28

Motor stall

Motor stall

Check the motor actual speed and load

Check motor parameters setting

Check the motor stall parameter setting

Err29

Eunk

29

Reserved

Err30

Eunk

30

Reserved

Err31

EAPF

31

Application fault

Check F350

Check F350 and below Table for details


When the drive has application fault ”E−APF”, the fault code can be read in parameter F3−50, the fault messages are listed in the below Table.

F350

Fault name

Possible causes

Corrective actions

1

Over speed

The current running speed of the motor exceeds the over-speed detection value

Check the over-speed detection value setting

Check the motor actual speed

Check the motor load

2

Speed error

The deviation between the current running speed and the reference speed exceeds the speed error detection value

Check the speed error detection value setting

Check the motor load

Check the motor speed whether is stable

Check the encoder PPR and wiring

3

Zero current detection

The output current less than the zero current detection value

Check the zero current detection value setting

Check the wiring between the motor and the drive


Note: The fault code is also displayed in the F0-13 and F0-14. We can use the two parameters to check if there are multiple faults at the same time. The relationships are shown:

bit of F0-13

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

= 1

= 1

= 1

= 1

=1

=1

=1

=1

=1

=1

=1

=1

=1

=1

=1

=1

Value of F0-15

= 16

= 15

= 14

= 13

= 12

= 11

= 10

= 9

= 8

= 7

= 6

= 5

= 4

= 3

= 2

= 1

bit of F0-14

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

=1

=1

=1

=1

=1

=1

=1

=1

=1

=1

=1

=1

=1

=1

=1

=1

Value of F0-15

= 32

= 31

= 30

= 29

= 28

= 27

= 26

=25

= 24

= 23

= 22

= 21

= 20

= 19

= 18

= 17


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