Standard user guide
V51-00-V19 eng
-18- Rights to changes reserved
2.9 Error codes
Display Problem: Solution:
UU
Under voltage
Check mains supply
DC Link overloaded –Inverter defect
Check all 3 phases on the SC3-xxxxx
OU
Over voltage
Check mains supply
Try to decrease deceleration time (Par. 4)
Use a inverter with Brake chopper
OH
Inverter Overheat Check mounting (free space around), fan and load. Ventilation may
needed.
POH
Motor is hot Check connections on terminal 7. Motor ventilation might needed
OC1
Over current (1.9 times
normal current)
Temporally over current caused by overloaded motor or by spikes
on the mains supply, about 190%of the nominal load current.
OC2
Over current (1.6 times
normal current more than
30 sec)
Inverter is overloaded. Try a larger inverter. If using a SC3- set the
V/F curve to 87 Hz.
OC3
Over current Fault while accelerating lower Par.3
Fault while decelerating lower Par.4
Inverter defect – Please contact supplier.
50,5
Flashing display Actual current exceeds the current limit set up in Par. B
Inverter stops with error OC3 after 30 sec.
IOC
> 30mA on input 3 When input is used as a current input the current limit is 20mA.
20mA
ERR.X
System diagnose – fault Try updating the internal software with SpeedUp. Contact supplier.
Reset of errors:
Power off (Except Par. E = 4)
(Alternative)
Terminal 8 (OFF) activated or
Press STEP/STORE
Note: Only reset the error when the reason to the fault has been discovered. TRIP errors can’t be reset by
terminal 8 in programs where it is used for other purpose than ON/OFF
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