Siemens SIMOCODE pro C System Manual page 50

Overview of functions
5.2 Monitoring functions
Voltage monitoring
1)
High Performance SIMOCODE pro V allows voltage monitoring of a three-phase current
network or a single-phase network for undervoltage or further availability:
● Monitoring for undervoltage: Two-level monitoring for freely selectable limits. The
response of SIMOCODE pro on reaching a prewarning level or trip level can be freely
parameterized.
● Monitoring for further availability: Even when the motor is switched off, SIMOCODE pro
can indicate the further availability of the feeder by measuring the voltage directly at the
circuit breaker or fuses.
Temperature monitoring
The SIMOCODE pro S, SIMOCODE pro V and SIMOCODE pro V PN GP devices offer the
option of implementing analog temperature monitoring, e.g. of the motor windings or the
bearings - SIMOCODE pro S with the multifunction module,
SIMOCODE pro V/SIMOCODE pro V PN with the temperature module.
SIMOCODE pro S and SIMOCODE pro V support two-level monitoring for overtemperature
for freely selectable limit values. The response of SIMOCODE pro on reaching a prewarning
level or trip level can be freely parameterized and delayed. Temperature monitoring takes
into account the highest temperature of all the sensor measuring circuits in use.
Active power monitoring
The active power curve of a motor reflects its actual load. Excess load results in increased
wear of the motor and, thus, may lead to premature motor failure. Excessively low active
power can indicate no-load operation of the motor, for example.
High Performance SIMOCODE pro V offers the option of two-level active power monitoring
for freely selectable upper and lower limits respectively. The response on reaching a
prewarning level or trip level can be freely parameterized and delayed.
Cos phi monitoring
1)
The power factor fluctuates more than the motor current, particularly in the low-end
performance range of a motor. For this reason, the monitoring of the power factor comes into
consideration for the detection of faults. Examples: Breakage of a drive belt or drive shaft
High Performance SIMOCODE pro V enables two-level monitoring of the power factor cos
phi for freely selectable minimum limits. The devices' response on reaching a prewarning
level or trip level can be freely parameterized and delayed.
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2)
1)
System Manual, 05/2019, A5E40507475002A/RS-AD/004
SIMOCODE pro