Lenze EVF9383 - Manual (Page 393)

Troubleshooting and fault elimination
Fault elimination
Behaviour in case of overvoltage in the DC bus (OU message)
9
9.4
9.4.3
l
9.4−3 EDSVF9383V EN 7.1−04/2012
9.4.3 Behaviour in case of overvoltage in the DC bus (OU message)
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.
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
^
8.2−25
^
8.2−40
^
9.4−3
Description
Thresholds for DC−bus
overvoltage (OU)