11
vacon • 104
FAULT TRACING
Tel. +358 (0) 201 2121 • Fax +358 (0)201 212 205
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.
Table 37. Fault codes
Fault
code
Fault
Fault
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
Subcode in T.14:
S1 = Hardware trip
S2 = Current cutter supervision (NXS)
S3 = Current controller supervision
Check loading.
Check motor.
Check cables.
2
Overvoltage
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
Make the deceleration time longer.
Use brake chopper or brake resistor
(available 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 your
local distributor.
6
Emergency stop
Stop signal has been given from the
option board.
Check emergency stop circuit.
7
Saturation trip
Various causes:
- defective component
- brake resistor short-circuit or over
load
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.
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