Siemens SIMOTICS Series Hardware Installation Manual

Motor components, characteristics and options
4.1 Thermal motor protection
SIMOTICS M-1FE2 built-in motors
Hardware Installation Manual, 04/2020, A5E50074509B AA
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4.1.3 Temperature evaluation using NTC thermistors (universal protection, option)
Note
Temperature evaluation usin
g the NTC K227 and NTC PT3-51F thermistors does not
guarantee full motor protection.
NTC K227 and NTC PT3-51F thermistors are used if the drive system cannot evaluate
Pt1000 thermistors.
They are intended for operating the motor on third-party systems.
The NTC thermistor should be connected in accordance with the configuration and operating
instructions of the third-party system.

Siemens SIMOTICS Series Specifications

General

Product brand name	SIEMENS
Product designation	SIMOTICS
Efficiency Class	IE1, IE2, IE3, IE4
Ambient Temperature	+60°C
Altitude	Up to 4000 m
Frame Size	63 to 355
Protection Class	IP55, IP56, IP65