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Fault codes – TREND NX Variable Speed Drives User Manual

Page 96

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CONTROL KEYPAD

vacon • 79

24-hour support +358 (0)40 837 1150 • Email: [email protected]

7

7.3.4.2 Fault

codes

The fault codes, their causes and correcting actions are presented in the table below. The shadowed faults
are A faults only. The items written in white on black background present faults for which you can program
different responses in the application. See parameter group Protections.
Note: When contacting distributor or factory because of a fault condition, always write down all texts and
codes on the keypad display.

Fault

code

Fault

Possible cause

Correcting measures

1

Overcurrent

Frequency converter has detected too
high a current (>4*I

H

) in the motor cable:

− sudden heavy load increase

− short circuit in motor cables
− unsuitable motor

Check loading.
Check motor.
Check cables.

2

Overvoltage

The DC-link voltage has exceeded the
limits defined in Table 4-7.
− too short a deceleration time

− high overvoltage spikes in supply

Make the deceleration time longer. Use
brake chopper or brake resistor (avail-
able as options)

3

Earth fault

Current measurement has detected that
the sum of motor phase current is not
zero.
− insulation failure in cables or motor

Check motor cables and motor.

5

Charging
switch

The charging switch is open, when the
START command has been given.
− faulty operation

− component failure

Reset the fault

and restart.

Should the fault re-occur, contact the
distributor near to you.
Please visit:

http://www.vacon.com/wwcontacts.html

6

Emergency
stop

Stop signal has been given from the
option board.

7

Saturation trip

Various causes:
− defective component

− brake resistor short-circuit or

overload

Cannot be reset from the keypad.
Switch off power.
DO NOT RE-CONNECT POWER!
Contact factory.
If this fault appears simultaneously with
Fault 1, check motor cables and motor

8

System fault

-

component failure

-

faulty operation

Note exceptional fault data record, see
7.3.4.3.
S1 = Feedback of motor voltage
S2 = Reserved
S3 = Reserved
S4 = ASIC trip
S5 = Disturbance in VaconBus
S6 = Feedback of charging switch
S7 = Charging switch
S8 = No power to driver card
S9 = Power unit communication (TX)
S10 = Power unit communication (Trip)
S11 = Power unit comm. (Measurement)

Reset the fault

and restart.

Should the fault re-occur, contact the
distributor near to you.
Please visit:

http://www.vacon.com/wwcontacts.html