TREND NX Variable Speed Drives - Manual (Page 96)

CONTROL KEYPAD vacon • 79
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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