Siemens SIMOTICS M-1FE2, Configuration Manual

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SIMOTICS M-1FE2 built-in motors
Configuration Manual, 05/2021, A5E50494252B AB
49
Motor components and options
4
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: Temperature sensors (2 x Pt1000)
Full protection (option): Temperature s PTC thermistor triplet (3 sensors in series)
(2 x 1 x PTC180 C)
see Chapter "Temperature evaluation using the PTC thermistor
triplet (full motor protection, option) (Page 52)"
Universal protection (op-
tion):
Temperature s PTC thermistor t NTC thermistor (2
x 1 x PTC180 C + NTC PT3-51F + NTC K227/33k/A1)
see Chapter "Temperature evaluation using NTC thermistors (uni-
versal protection, option) (Page 52)"
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.