Troubleshooting and fault elimination
Fault elimination
Behaviour in case of overvoltage in the DC bus (OU message)
9
9.4
9.4.3
9.4−4
EDSVF9383V EN 7.1−04/2012
U
DC
t C0912³
t < C0912
t = C0912
01
IMP
9300vec142
Fig. 9.4−2 Influence of the delay time (C0912)
Switch−off threshold OU
Switch−on threshold OU
The period of time between exceeding the switch−off threshold OU and
undershooting the switch−on threshold OU equals or is higher than the
delay time set in C0912.
After undershooting the switch−on threshold OU, the pulse inhibit is
deactivated.
The period of time between exceeding the switch−off threshold OU and
undershooting the switch−on threshold OU is lower than the delay time set
in C0912.
The pulse inhibit is deactivated after the delay time in C0912 has elapsed.
ƒ The delay time in [ms] is set under C0912. The Lenze setting can be
changed by the factor 0.5 ... 2.
Adjustment
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