76(80) Fault tracing vacon
Vacon Oyj Telephone: +358-201-2121 Fax: +358-201-212 205
24-hour support: +358-40-8371 150 Email: vacon@vacon.com
9
9. FAULT TRACING
When a fault is detected by the frequency converter control electronics, the drive is stopped and the
symbol F together with the ordinal number of the fault and the fault code appear on the display. The
fault can be reset with the Reset button on the control keypad or via the I/O terminal. The faults are
stored in the Fault history menu (H5) which can be browsed. The different fault codes you will find
in the table below.
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.
Fault
code
Fault Possible cause Correcting measures
1
Overcurrent Frequency converter has detected too
high a current (>4*I
n
) in the motor cable:
− sudden heavy load increase
− short circuit in motor cables
− unsuitable motor
Check loading.
Check motor size.
Check cables.
2
Overvoltage The DC-link voltage has exceeded the
limits defined in.
− too short a deceleration time
− high overvoltage spikes in utility
Make the deceleration time longer.
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
8
System fault - component failure
- faulty operation
Reset the fault
and restart.
Should the fault re-occur, contact the
distributor near to you.
Please visit:
http://www.vacon.com/wwcontacts.html
9
Undervoltage DC-link voltage is under the voltage limits
defined in.
− most probable cause: too low a
supply voltage
− frequency converter internal fault
In case of temporary supply voltage
break reset the fault and restart the
frequency converter. Check the supply
voltage. If it is adequate, an internal
failure has occurred.
Contact the distributor near to you.
Please visit:
http://www.vacon.com/wwcontacts.html
11
Output phase
supervision
Current measurement has detected that
there is no current in one motor phase.
Check motor cable and motor.
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