Fault Codes - Honeywell NX series User Manual

7
60(86)
7.3.4.2

Fault codes

The fault codes, their causes and corrective actions are presented in the table below. The
shadowed faults are A faults only. The faults written in white on black background may appear as
both A and F fault.
Fault Fault
code
1
Overcurrent
2
Overvoltage
3
Earth fault
5 Charging switch
6 Emergency stop
7 Saturation trip
8 System fault
9 Undervoltage
10 Input line
supervision
11 Output phase
supervision
12 Brake chopper
supervision
13
Frequency
converter under-
temperature
14
Frequency
converter over
temperature
15 Motor stalled
Control keypad
Possible cause
Frequency converter has detected too
high a current (>4*I ) in the motor cable:
n
sudden heavy load increase
short circuit in motor cables
unsuitable motor
The DC-link voltage has exceeded the
limits defined in Table 4-1.
too short a deceleration time
high overvoltage spikes in supply
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.
Very high overload
Defective component
The frequency converter troubleshooting
system is unable to locate the fault.
DC-link voltage is under the voltage limits
defined in.
most probable cause: too low a
supply voltage
frequency converter internal fault
Input line phase is missing.
Current measurement has detected that
there is no current in one motor phase.
no brake resistor installed
brake resistor is broken
brake chopper failure
Heatsink temperature is under –10 C
Heatsink temperature is over 90 C.
Over temperature warning is issued when
the heatsink temperature exceeds 85 C.
Motor stall protection has tripped.
Correcting measures
Check loading.
Check motor.
Check cables.
Make the deceleration time longer. Use
brake chopper or brake
(available as options)
Check motor cables and motor.
Reset the fault and restart.
Should the fault re-occur, contact your
nearest distributor..
Cannot be reset from the keypad.
Switch off power. If this does not help
contact your nearest distributor.
Reset the fault and restart.
Should the fault re-occur, contact your
nearest distributor.
In case of temporary supply voltage
break reset the fault
the frequency converter. Check the
supply voltage. If it is adequate, an
internal failure has occurred.
Contact your nearest distributor.
Check supply voltage and cable.
Check motor cable and motor.
Check brake resistor.
If the resistor is ok, the chopper is faulty.
Contact your nearest distributor..
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.
Check motor.
resistor
and restart