3 Operation
(continued)
3-122
C232-302-401/402/403/404-603 / C232/EN M/A23
3.18 Limit Value Monitoring (Function Group LIMIT)
Disabling or enabling limit
value monitoring
Limit value monitoring can be disabled or enabled from the integrated local control panel.
Monitoring phase currents
and phase voltages
The C232 offers the possibility of monitoring the following measured values to determine
if they exceed a set upper limit value or fall below a set lower limit value:
Maximum phase current
Minimum phase current
Maximum phase-to-phase voltage
Minimum phase-to-phase voltage
Maximum phase-to-ground voltage
Minimum phase-to-ground voltage
If one of the measured values exceeds or falls below one of the set upper or lower limit
values, respectively, then a signal is issued once a set time period has elapsed.
If only one voltage transformer is fitted, the C232 needs to be informed via the setting
MAIN: M.v.asg. bay/station which voltage (phase-to-ground or phase-to-phase
voltage) is connected. Depending on this setting, the triggers for the monitoring of the
phase-to-ground or phase-to-phase voltages are enabled. If three current or voltage
transformers are fitted then either the variables of one three-phase system can be
monitored or, alternatively, single-pole monitoring of the current or voltage of different
transformers is possible.
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