Fault tracing
vacon • 87
24-hour support: +358-40-8371 150 • Email: [email protected]
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
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.
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:
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
11
Output phase
supervision
Current measurement has detected that
there is no current in one motor phase.
Check motor cable and motor.
13
Frequency
converter
under-
temperature
Heatsink temperature is under –10
°
C
14
Frequency
converter
overtemperature
Heatsink temperature is over 90
°
C.
Overtemperature warning is issued when
the heatsink temperature exceeds 85
°
C.
Check the correct amount and flow of
cooling air.
Check the heatsink for dust.
Check the ambient temperature.
Make sure that the switching frequency
is not too high in relation to ambient
temperature and motor load.
