Malfunctions
Troubleshooting 10.1
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[en] | 09/2020 | 5100056242 | FUH | Operator’s manual
10
Malfunctions
10.1
Troubleshooting
Fault
Cause
Remedy
No malfunction.
• Switch on.
No malfunction.
• Normal operation.
Machine is working.
Overcurrent control light
lights up red.
• Machine adjusts the
output frequency to
avoid shutdown.
• The current con-
sumption of the con-
nected machines is
too high.
• The machine oper-
ates in the approved
overload range.
1) Reduce the current consump-
tion of the connected ma-
chines.
2) FUH70: Check that the load is
evenly distributed between
both converters.
Machine is not working.
Overcurrent control light
lights up red.
• Short-circuit in one
of the connected
machines.
• 2-phase operation*
with one of the con-
nected machines.
• Mechanical defect in
one of the connec-
ted machines.
1) Perform reset: Switch ma-
chine off and back on again.
2) Disconnect and check con-
nected machines
3) Perform reset again.
4) Reduce the number of con-
nected machines.
• Short circuit inside
the machine.
1) Disconnect connected ma-
chines.
2) Perform reset: Switch ma-
chine off and back on again.
3) If the error still occurs, have
the machine repaired. **
Machine is not working.
Control light Over-
voltage lights up red.
• Input voltage too
high (> 275 V) or too
low (< 180 V).
• Fluctuating input
voltage.
• One of the connec-
ted machines has
too long extension
with too small cross-
section.
1) Perform reset: Switch ma-
chine off and back on again.
2) Check mains voltage.
3) Check extension for correct
cross-section.
4) Perform reset again.
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