Parameters
4.3 Monitoring functions
SIMOCODE pro - Parameterize
Operating Manual, 04/2017, A5E40507630002A/RS-AA/001
143
Cos phi monitoring
Description
Cos phi monitoring monitors the load condition of inductive loads. The main field of
application is for asynchronous motors in 1-phase or 3-phase networks with loads that
fluctuate significantly. The power factor fluctuates more than either the motor current or the
active power does, particularly in the low-end performance range of a motor. Therefore,
power factor monitoring is particularly suitable for distinguishing between no-load operation
and faults, e.g. a broken drive belt or drive shaft. If the set trip level or warning level is
undershot, a signal is generated or the motor is switched off, depending upon the setting.
Figure 4-35 "Cos Phi Monitoring" function block
Trip level, warning level
You can parameterize two different response levels (trip level / warning level) for cos phi
monitoring.
0 to 100 % (default: 0 %)
to 100 % (default: 0 %)
0 % = cos phi = 0.00
50 % = cos phi = 0,50
100 % = cos phi = 1,00
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