Lenze 8210 HVAC Series, Руководство по эксплуатации

Страница: 81 / 94

Troubleshooting and fault elimination
821XKlimaBA0399
8-3
Display Remedy Cause Fault
H05 Internal fault Contact Lenze
LU Undervoltage DC-bus voltage too low
-
Check mains voltage
-
Check supply module
OC1 Short circuit Short circuit Find out cause of short circuit; check
cable
Excessive capacitive charging
current of the motor cable Use motor cable which is shorter or of
lower capacitance
OC2 Earth fault
Grounded motor phase Check motor; check cable
OC2 Earth fault
Excessive capacitive charging
current of the motor cable Use motor cable which is shorter or of
lower capacitance
OC3 Overload inverter
during acceleration or
short circuit
Acceleration time too short (C012)
-
Increase acceleration time
-
Check drive selection
during acceleration or
short circuit
Defective motor cable Check wiring
Interturn fault in the motor Check motor
OC4 Overload controller
during deceleration Deceleration time too short (C013)
-
Increase deceleration time
-
Check the selection of the brake
resistor or connect the brake chopper
OC5 I x t overload Frequent and too long acceleration
processes with overcurrent Check drive dimensioning
OC6 Overload motor Motor is thermally overloaded, for
instance, because of
-
impermissible continuous
current
-
Check drive selection
-
frequent or too long acceleration
processes
-
Check the setting under C120
OH Heat sink temperature
is higher than the value
set in the controller
Ambient temperature
T
u
> + 40
•
C or + 50
•
C
-
Allow controller to cool and ensure
ventilation
-
Check the ambient temperature in the
control cabinet
Heat sink very dirty Clean heat sink
Incorrect mounting position Change mounting position
OH3 PTC monitoring
Motor too hot because of
excessive current or frequent and
too long acceleration
Check drive dimensioning
PTC not connected Connect PTC or switch-off monitoring
(C0585= 3)
OH4 Overtemperature unit Inside unit too hot
-
Reduce controller load
-
Improve cooling
-
Check fan in the controller
OU Overvoltage
Mains voltage too high Check voltage supply
OU Overvoltage
Feedback operation
Braking operation
-
Increase deceleration times.
-
For operation with brake choppers:
- Check the selection and connection
of the brake resistor
- Increase the deceleration times
Earth leakage on the motor side Check motor cable and motor for earth
fault (disconnect motor from inverter)
Show/Hide Bookmarks