Lenze DDS Target 9300 Servo PLC V8.x - Manual (Page 80)

2.12 MCTRL_MotorControl (node number 131)
9300 Servo PLC
System blocks
2−74
L
9300 Servo PLC EN 5.1
2.12.17.1 OC1 − short−circuit monitoring
This monitoring function protects the drive controller.
Error Monitoring function System variable Possible responses
No. Display TRIP Message Warning FAIL−QSP Off
x011 OC1 Short circuit MCTRL_bShortCircuit_b ·
· Lenze setting
ü Setting possible
Monitoring is actuated in the event of a short circuit in the motor phases. This can also be caused
by an interturn fault in the machine.
·
Monitoring can also respond during power−up if an earth fault occurs.
·
If monitoring responds, the drive controller has to be disconnected from the mains and the
short circuit has to be eliminated.
2.12.17.2 OC2 − earth−fault monitoring
This monitoring function protects the drive controller.
Error Monitoring function System variable Possible responses
No. Display TRIP Message Warning FAIL−QSP Off
x012 OC2 Earth fault MCTRL_bEarthFault_b ·
· Lenze setting
ü Setting possible
The 9300 Servo PLC is equipped with earth−fault detection as standard.
·
If monitoring is actuated, the drive controller has to be disconnected from the mains and the
earth fault has to be eliminated.
Possible causes of an earth fault:
·
Short circuit to frame of the machine
·
Short circuit of a phase to the shield
·
Short circuit of a phase to PE