Fault Finding; Fault Codes And Remedies 14 Note - Grundfos RSI Series Installation And Operating Instructions Manual

6. Fault finding

6.1 Fault codes and remedies
Fault Fault
Fault name
code ID
Overcurrent
1
(hardware fault)
1
Overcurrent
2
(software fault)
Overvoltage
10
(hardware fault)
2
Overvoltage
11
(software fault)
Earth fault
20
(hardware fault)
3
Earth fault
21
(software fault)
Charging switch
5 40
Saturation
7 60
14
Possible cause
AC drive has detected too high a
current (> 4*I ) in the motor cable:
H
• sudden heavy load increase
• short circuit in motor cables
• unsuitable motor
The DC-link voltage has exceeded
the limits defined.
• too short a deceleration time
• brake chopper is disabled
• high overvoltage spikes in supply
• Start/Stop sequence too fast
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
Various causes:
• defective component
• brake resistor short-circuit or
overload
Remedy
Check loading.
Check motor.
Check cables and connections.
Make identification run.
Check ramp times.
Make deceleration time longer.
Use brake chopper or brake
resistor (available 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.
Cannot be reset from keypad.
Switch off power.
Do not re-connect power!
Contact factory.
If this fault appears
simultaneously with F1, check
motor cables and motor.