REFUspeed RS51
Troubleshooting
9-7
DOK-RD500*-RS51*******-IB02-EN-P
No. Designation
Cause
Message
Remedy / comments
32
Overcurrent
Fault
1.
Current limiting is active for a time which is longer
than that parameterized.
•
Check the setting of P0574!
The time duration of the uninterrupted current
limiting (D1678 = 1) can be set between 1
second and 100 seconds in 11 steps using
P0574.
If current limiting is interrupted before the
parameterized time has expired (D1678 = 0),
the time counter is reset to 0 and then restarts
at the next current limiting.
If P0574 has been set to 0 (= continuous), then
the “Overcurrent” fault is output.
The peak current of the drive converter was exceeded
Causes outside the drive converter:
- Defective motor, invalid load, defective motor cable
- Setpoint step which is too fast
Disconnect the motor cable, enable the inverter. If the
fault no longer occurs, then it is highly likely that the
cause is outside of the drive converter.
Measure using the REFUwin “Oscilloscope function”:
Parameter D1981 “f act from normalization”.
Cause in the parameterization:
The incorrect motor data were parameterized.
Only for option S sinusoidal filter: The pulse frequency
(P0026) is set to less than 8 kHz; thus, the sinusoidal
filter can oscillate and conduct high currents.
Check the motor data in the Quick-Setup.
Set the pulse frequency in Quick-Setup (P0026) to 8
kHz or greater.
Cause inside the drive converter:
Defective power section transistor.
Please contact your customer service.
34
Safety Off (NAMUR)
The “Safety Off” fault message has been introduced so
that the drive converter fulfills the Namur Standard
(Namur is a Standards Committee for instrumentation
and control in the chemical industry). It is only activated
when P0057 is set to 1. The fault or alarm is selected
using P0571.
The fault is initiated using an external control signal,
which is connected to the digital input of the drive
converter.
The D parameter of the digital input is connected to
P0050.1.
The external control signal is used to positively
disconnect the drive from the line supply
(1 = operation; 0 = disconnected from the line supply).
Alarm / fault
35
Motor overload
The electronic overload relay has responded (refer to
the function diagram “Modulation, measured value
sensing” or in the Operating Instructions Section 5 of
the basic programming “Thermal motor protection”).
Alarm / fault
Check P0566 “Overload protection threshold” to ensure
that it has been correctly set.
The type of response of the electronic overload relay
can be set using P0565: Disabled / Alarm / Fault.
39
On for start inhibit
The message only occurs when the start inhibit option
is installed.
Sizes A to E: Contacts X80.1 and 2 were opened
during operation, or an on command was output with
the terminal open.
Sizes G and H: Contacts X80.170 and 171 were
opened during operation, or an on command was
issued with the terminals open.
Fault
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