Lenze 9300 Series Operator's Manual page 22

Troubleshooting and fault elimination
Error messages
Display Error
OC2 Earth fault
OC3 Trip due to overload
OC5 I x t overload
OH Heat sink temperature is
higher than the value set
in the controller
1)
OH3 Motor temperature is
higher than the value set
in the controller
OH4 Heat sink temperature is
higher than the value set
under C0122
1)
OH7 Motor temperature is
higher than the value set
under C0121
OH8 PTC at terminals T1, T2
indicates motor
overheating
OU Overvoltage
PEr Program fault
PI Initializing error
PR0 Parameter set error
PR1
PR2
PR3
PR4
Sd3 Encoder fault at X9/8
Sd5 Master current source
defective
Sd6 Sensor fault
1)
Temperature sensing through incremental encoder X8
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Cause
One of the motor phases has an earth contact
Excessive capacitive charging current in the motor cable
Acceleration and/or deceleration too short (C0012, C0013)
Value for current parameter V (C0075) to low
p
acceleration with overcurrent is to frequent and too long
Continuous overload with I > 1.5 x I
motor
Ambient temperature
T > 40 °C or 50 °C
amb
Heat sink very dirty
Incorrect mounting position
Motor too hot because of excessive current, or acceleration
is too frequent and too long
No PTC connected to X7 or X8
Ambient temperature
T > 40 °C or 50 °C
amb
Heat sink very dirty
Incorrect mounting position
Value set under C0122 was too low
Motor too hot because of excessive current, or acceleration
is too frequent and too long
No PTC connected to X7 or X8
Value set under C0121 was too low
Motor too hot because of excessive current, or acceleration
is too frequent and too long
Terminals T1, T2 are not assigned
Excessive braking energy (DC bus voltage higher than the
value set under C0173)
A fault in the program was detected
A fault was detected during the parameter set transfer
between the drive controllers
Parameter set does not match the controller
Fault when reading a parameter set
CAUTION:
• The factory setting is loaded automatically
Cable interrupted
Input X9 PIN 8 not assigned
Master current at X6/1, X6/2 < 2 mA
Encoder of the motor temperature detection at X7 ot X8
indicates undefined values
Remedy
Check motor; check cable
Use motor cable which is shorter or has a lower
capacitance
Increase acceleration and deceleration times
Check setting
Check drive dimensioning
rx
Allow controller to cool and ensure better ventilation
Check ambient temperature in the control cabinet
Clean heat sink
Change mounting position
Check drive dimensioning
Connect PTC or switch off monitoring (C0583=3)
Allow controller to cool and ensure better ventilation
Check ambient temperature in the control cabinet
Clean heat sink
Change mounting position
Enter higher value
Check drive dimensioning
Connect PTC or switch off monitoring (C0584=3)
Enter higher value
Check drive dimensioning
Connect PTC or thermostat or switch off monitoring
(C0585=3)
Use brake unit or supply module and brake module or
feedback module
Send controller with data (on diskette) to Lenze
Correct parameter set
Set the desired parameters and save under C0003.
For PRO, the supply voltage must be switched off as well
Check cable for open circuit
Assign input X9 PIN 8 with 5V or switch off monitoring
(C0587 = 3)
Check cable for open circuit
Check master current source
Check supply cable for firm connection
Switch off monitoring with C0594 = 3 if necessary