Monitoring functions
Configuring monitoring functions
DC−bus voltage monitoring (OU, LU)
214
EDBCSXS064 EN 4.0
9.3.11
DC−bus voltage monitoring (OU, LU)
Fault message
Monitoring function
System variable
Possible response
TRIP
Messag
e
Warnin
g
Off
020
OU
Overvoltage
MCTRL_bOvervoltage_b
·
030
LU
Undervoltage
MCTRL_bUndervoltage_b
·
·
Default setting
ü
Setting possible
These monitoring functions monitor the DC bus and protect the controller.
ƒ
If the DC−bus voltage at terU
G
and −U
G
exceeds the upper switch−off
threshold set in C0173, an OU message is sent.
ƒ
If the DC−bus voltage at terU
G
and −U
G
falls below the lower switch−off
threshold set in C0174, an LU message is sent.
The monitoring response remains active until the corresponding threshold is fallen
below/exceeded again.
Note!
All drive components in DC−bus connections must have the same thresholds!