Grundfos RSI - Fault History; Fault Codes and Remedies

9.3 Fault history
In menu M4.3 Fault history you find the maximum
number of 40 occurred faults. On each fault in the
memory you will also find additional information, see
below.
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Diagnostics
Active faults
( 0 )
Reset faults
Fault history
( 39 )
ID: M4.1
STOP READY I/O

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!
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!
!
Fault history
External Fault
Fault old
51
891384s
External Fault
Fault old
51
871061s
Device removed
Info old
39
862537s
ID:
STOP READY I/O
TM078693
Fault history menu with graphical keypad
9.4 Fault codes and remedies
9.4.1 Code 1 (Fault ID 1 or 2, Overcurrent)
Fault ID Fault name
1 Overcurrent (hardware fault)
2 Overcurrent (software fault)
Cause Remedy
AC drive has detected too high current (> 4*I
H
) in the
power cable:
• sudden heavy load increase
• short circuit in power cables
• unsuitable motor
• Check the load.
• Check the motor.
• Check the cables and the connections.
• Run an identification.
• Check the ramp times.
9.4.2 Code 2 (Fault ID 10 or 11, Overvoltage)
Fault ID Fault name
10 Overvoltage (hardware fault)
11 Overvoltage (software fault)
Cause Remedy
The DC-link voltage has exceeded the limits defined.
• deceleration time is too short
• brake chopper is disabled
• high overvoltage spikes in supply
• start/stop sequence is too fast
• Extend the deceleration time.
• Use a brake chopper or brake resistor (available as
options).
• Activate overvoltage controller.
• Check input voltage.
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English (GB)