Motor Components And Options; Motor Components; Thermal Motor Protection - Siemens SIMOTICS M-1FE2 Configuration Manual

Motor components and options

4.1

Motor components

4.1.1

Thermal motor protection

The stator winding can be supplied with the following motor protection to sense (measure)
and monitor the motor temperature:
Standard protection:
Full protection (option):
Universal protection (op-
tion):
Note
If water-cooled synchronous built-in motors are operated for longer than one minute at a
standstill with the static torque, a phase can be thermally loaded disproportionately.
• Reduce the permanent static torque to 20 .
• Protect the winding thermally with a thermistor triplet (PTC) with an external tripping
unit.
NOTICE
Thermal damage to temperature-sensitive parts
Some parts of the electrical motor enclosure can reach temperatures that exceed 100 °C. If
temperature-sensitive parts, e.g. electric cables or electronic components, come into
contact with hot surfaces, these parts could be damaged.
• Ensure that no temperature-sensitive parts are in contact with hot surfaces.
SIMOTICS M-1FE2 built-in motors
Configuration Manual, 05/2021, A5E50494252B AB
Temperature sensors (2 x Pt1000)
Temperature sensors + PTC thermistor triplet (3 sensors in series)
(2 x Pt1000 + 1 x PTC180 C)
see Chapter "Temperature evaluation using the PTC thermistor
triplet (full motor protection, option) (Page 52)"
Temperature sensors + PTC thermistor triplet + NTC thermistor (2
x Pt1000+ 1 x PTC180 C + NTC PT3-51F + NTC K227/33k/A1)
see Chapter "Temperature evaluation using NTC thermistors (uni-
versal protection, option) (Page 52)"
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