Lenze E82MV551_4B - Page 137

Fault detection and elimination
Fault messages
U
EDK82MV222 DE/EN/FR 9.0
NPT
L
RemedyCauseFaultPC
1)
Keypad
C
0
1
1
9
1
o
r
4
)
No PTC connected Connect PTC or switch off
monitoring
OH4

54 Controller
overtemperature
Controller too hot inside z Reduce controller load
z Improve cooling
z Check fan in the controller
OH51
203 PTC monitoring
(Display when
C0119 = 2 or 5)
Motor too hot due to
impermissibly high currents or
frequent and too long
acceleration processes
Check drive dimensioning
No PTC connected Connect PTC or switch off
monitoring
OU

-
DC bus
overvoltage
(Message or TRIP
configurable in
C0310)
Mains voltage too high Check supply voltage
OUE

22
Braking operation z Increase deceleration times
z When operating with an
external brake resistor:
– C heck dimensioning,
connection and supply cable
of the brake resistor
– Increase deceleration times
Earth leakage on the motor
side
Check motor supply cable and
motor for earth fault (disconnect
motor from the inverter)
Pr

75 Faulty parameter
transmission
when using the
keypad
All parameter sets are
defective
Before enabling the controller,
repeat the data transfer or load
the Lenze setting
Pr1

72 Faulty PAR1
transfer with
keypad
Parameter set 1 is defective
Pr2

73 Faulty PAR2
transfer with
keypad
Parameter set 2 is defective
Pr3

77 Faulty PAR3
transfer with
keypad
Parameter set 3 is defective
Pr4

78 Faulty PAR4
transfer with
keypad
Parameter set 4 is defective
Pr5

79 Internal fault EEPROM is defective Contact Lenze
Pt5

81 Time error during
parameter set
transfer
Data flow from keypad or PC
interrupted, e.g. because
keypad was disconnected
during transfer
Before enabling the controller,
repeat the data transfer or load
the Lenze setting.
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