Fault Codes - Vacon nxp/c User Manual

vacon • 104
11.2

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
Fault
code
1
Overcurrent
2
Overvoltage
3
Earth fault
5
Charging switch
6
Emergency stop
7
Saturation trip
11
Table 37. Fault codes
Fault
Frequency converter has detected too
high a current (>4*I ) in the motor
H
cable:
- sudden heavy load increase
- short circuit in motor cables
- unsuitable motor
Subcode in T.14:
S1 = Hardware trip
S2 = Current cutter supervision (NXS)
S3 = Current controller supervision
The DC-link voltage has exceeded the
limits defined in Table 6.
- too short a deceleration time
- high overvoltage spikes in supply
Subcode in T.14:
S1 = Hardware trip
S2 = Overvoltage control supervision
Current measurement has detected
that the sum of motor phase current is
not zero.
- insulation failure in cables or motor
The charging switch is open, when the
START command has been given.
- faulty operation
- component failure
Stop signal has been given from the
option board.
Various causes:
- defective component
- brake resistor short-circuit or over
load
FAULT TRACING
Correcting measures
Check loading.
Check motor.
Check cables.
Make the deceleration time longer.
Use brake chopper or brake resistor
(available as options).
Check motor cables and motor.
Reset the fault and restart.
Should the fault re-occur, contact your
local distributor.
Check emergency stop circuit.
Cannot be reset from the keypad.
Switch off power.
DO NOT RE-CONNECT POWER!
Contact your local distributor.
If this fault appears simultaneously
with Fault 1, check motor cables and
motor.
Tel. +358 (0) 201 2121 • Fax +358 (0)201 212 205