Motor Components And Options; Motor Components; Thermal Motor Protection - Siemens SIMOTICS T-1FW3 Configuration Manual

Motor components and options

4.1

Motor components

4.1.1

Thermal motor protection

NOTICE
Thermal motor damage
Windings and bearings can be destroyed if the motor overheats. Further, if a motor
overheats, this can demagnetize the permanent magnets.
• Only operate the motors in conjunction with an effective temperature control.
Thermal motor protection with temperature sensors
The stator core has two temperature sensors to monitor the winding; one of these is a
reserve.
If you want to use the reserve temperature sensor, you must change the plug-in connection.
The plug-in connection is at motors with encoder with belt drive in the encoder box. At all
other motor versions the plug-in connection is in the terminal box. See the following pictures
to this.
1
2
Figure 4-1
1FW3 complete torque motors
Configuration Manual, 08/2020, A5E46027705B AA
Connected temperature sensor with plug-in connector
Reserve temperature sensor with plug-in connector
Example: Connection in the encoder box
4
75