Motor components, characteristics and options
4.1 Motor components
SIMOTICS M-1FE1 synchronous built-in motors
54
Configuration Manual, 09/2019, A5E47872980B AA
The motor must be de-energized within 1 second when the response temperature is
exceeded.
Table 4- 2 Technical data for the PTC thermistor triplet
Designation
Technical data
Type (acc. to DIN 44082
–
M180)
PTC thermistor triplet
Thermistor resistance (20° C)
≤
750
Ω
Resistance when hot (180° C)
≥
1710
Ω
Connection
Via an external trip unit
Cable cross-section/outer diameter
0.14 mm
2
/0.9 mm
Response temperature
180 °C
Note:
PTC thermistors do not have a linear characteristic curve and are, therefore, not suitable
for determining the instantaneous temperature.
Note
PTC thermistors are ESD components
Carefully observe the ESD instructions.
4.1.1.3
Temperature evaluation using NTC thermistors (universal protection, option)
Note
Temperature evaluation using the NTC K227 and NTC PT3-51F thermistors does not
guarantee full motor protection. Full motor protection is only ensured when the PTC
thermistor triplet is evaluated.
NTC K227 and NTC PT3-51F thermistors are used if the drive system cannot evaluate
Pt1000 thermistors.
The NTC thermistors are provided 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.
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