Table of Contents
7.3.4.2
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
Charging switch
5
6
Emergency
stop
7
Saturation trip
8
System fault
CONTROL KEYPAD
Possible cause
Frequency converter has detected too
high a current (>4*I
) in the motor cable:
H
−
sudden heavy load increase
−
short circuit in motor cables
−
unsuitable motor
Subcode in T.14:
S1 = Hardware trip
S2 = Reserved
S3 = Current controller supervision
The DC-link voltage has exceeded the
limits defined.
−
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 overload
-
component failure
-
faulty operation
Note exceptional fault data record.
S1 = Reserved
S2 = Reserved
S3 = Reserved
S4 = Reserved
S5 = Reserved
S6 = Reserved
S7 = Charging switch
S8 = No power to driver card
S9 = Power unit communication (TX)
S10 = Power unit communication (Trip)
S11 = Power unit comm. (Measurement)
Correcting measures
Check loading.
Check motor.
Check cables.
Make identification run.
Make deceleration time longer. Use
brake chopper or brake resistor (avail-
able as options)
Activate overvoltage controller.
Check input voltage.
Check motor cables and motor.
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
Check emergency stop circuit.
Cannot be reset from the keypad.
Switch off power.
DO NOT RE-CONNECT POWER!
Contact factory.
If this fault appears simultaneously with
Fault 1, check motor cables and motor
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
7
83(110)
- Quick Links:
- Nxs/P User's Manual
- Control Keypad
- Fault Tracing
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