Lenze EVF9383−EV - Manual (Page 33)

Troubleshooting and fault elimination
Fault elimination
Controller in clamp operation
4
l
33 EDKVF93−05 EN 2.0
If the DC−bus voltage (U
DC
) exceeds the switch−off threshold OU, pulse inhibit will be set.
At the same time, an internal timer for a delay time (C0912) will be started.
Pulse inhibit will be reset, if the voltage falls below the switch−on threshold OU and the
delay time has elapsed.
Thresholds for DC−bus overvoltage (OU)
Types EVF93xx−EVV210, EVF93xx−EVV240, EVF93xx−EVV270 and EVF93xx−EVV300
Mains voltage range C0173 Switch−off threshold OU Switch−on threshold OU
< 400 V Operation with or without
brake transistor 0 770 V 755 V
400 V Operation with or without
brake transistor 1 * 770 V 755 V
460 V Operation with or without
brake transistor 2 770 V 755 V
480 V Brake transistor 3 770 V 755 V
480 V Brake transistor 4 800 V 785 V
500 V Operation with or without
brake transistor 5 900 V 885 V
* Lenze setting
Types EVF93xx−EV, EVF93xx−EVV060 and EVF93xx−EVV110
Mains voltage range C0173 Switch−off threshold OU Switch−on threshold OU
400 V Operation with or without
brake transistor Read only 700 V 685 V
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0912 OV delay time à − {1 ms} − Delay time of the pulse enable after
an OU message
à Depending on C0082, C0086,
C0087, C0088, C0089, C0090,
C0091, C0092
A change of one of the codes
resets C0912 to the time of the
selected motor
l The time is derived from the
double rotor time constant