Thermal Motor Protection - Bosch Rexroth MS2N Operating Instructions Manual

MS2N Synchronous Servomotors

4.2.3 Thermal motor protection

The motor temperature is monitored by two systems that are operated inde-
pendently of each other. The mounted temperature sensor and the drive-internal
temperature model ensure the best protection of motors against thermal over-
load.
The threshold values for motor temperature monitoring are contained in the en-
coder data memory and are read in and monitored automatically during the op-
eration with IndraDrive controllers. Threshold values for MS2N motors:
Motor-warning temperature (140°C)
●
Motor-disconnection temperature (145°C)
●
Motor
MS2NXX-XXXXX-XXXXX-XXNXX-XX
MS2NXX-XXXXX-XXXXX-XXAXX-XX
1700
1600
1500
1400
1300
1200
1100
1000
900
0 10
Fig. 4-1: Characteristic curve PT1000
PT1000
20 30 40 50 60 70
Temperature sensor
PT1000 (Standard)
KTY84-130 (Service product)
R
80 90 100 110 120 130
R911347581_Edition 04 Bosch Rexroth AG
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140 150 160 170
°C