Lenze 7812 - 8 Fault Diagnosis

checked: 19.04.89 MB 33.0831 GB
page: 27
Function code 28
The tunction code 28 allows tor an automatic connection ot the
inverter after a short—time inains tailure.
main s
L1, L2,L3
FWD(REV)
motor
speed
The trequency inverter adapts its rotatlonal tield trequency
to the speed ot the idling motor and then connects the motor
after subsequent reconnection ot the xnains. The drive then
accelerates to its set—value, tollowing the set acceleration
ramp.
Data code:
FIJ
: Funotion inactive
04 : Function active
8. Fault diaqnosis
lt the inverters sets TRIP, the type ot fault is displayed. The coding
is given in the tollowing table.
Display Type ot tault
0-perating fault
Controller tailure
Overcurrent during acceleration
Overcurrent during deceleration
Overcurrent at constant speed
Overvo ltage
Undervoltage
Inverter overtemperature „TI-flV‘ or
external temDerature switch S8
(ezterrial TRL? release)
Motor ov‘~rloir~
The displays OCl, 0C2 and 0C3 may also indicate a short—circuit
or earth circult of the motor terminals U, V, W.
ET4 6/fa
1
3
1
2
3
Err
Err
Oc
QC
OC
GMJ
LU
OL 1
CL 7