Monitoring functions
SIMOCODE pro
5-8 GWA 4NEB 631 6050-22 DS 03
5.3 Voltage monitoring
Description
SIMOCODE pro supports two-phase undervoltage monitoring of either a
three-phase network or a one-phase network for freely selectable limits.
The response of SIMOCODE pro on reaching a pre-warning level or trip level
can be freely parameterized and delayed.
Voltage is measured by current/voltage measuring modules. This is based
on the minimal voltage of all voltages U
min
.
Note
Please note that only phase voltage is available with SIMOCODE pro V basic
units up to version *E06*. If required, the line-to-line voltage can be
calculated from the phase voltage using the logic module "Calculator 1/2" as
follows: Line-to-line voltage = phase voltage
*
1. 7 3 .
From version *E07* onwards, either phase voltage or line-to-line voltage can
be used.
Fig. 5-4: "Voltage Monitoring" function block
Furthermore, even when the motor is switched off, SIMOCODE pro can
determine and signal the further availability of the feeder by measuring the
voltage directly at the circuit breaker or at the fuses in the main circuit.
Event
- Warning level U<
Voltage U
min
Trip level: U<
Trip level activity
Response at trip level
Trip delay
Hysteresis
1)
Event
See
Ta b l e 5 - 7
Voltage monitoring
- Trip level U<
Tripping
QE1
QE2
QE3
QE4
QE5
via
Current/voltage
measuring module
Warning level: U<
Warning level activity
Response at warning level
Warning delay
See
Ta b l e 5 - 8
1)
Hysteresis for voltage, cos phi, power
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