8.4.3 Motor Thermal Protection
S2.20 Sensor type
Setting range 0: PTC; 1: NTC
Minimum unit 1
Factory default 0
S2.21 Input channel of motor temperature
Setting range 0: Invalid; 1: Analog input voltage
Minimum unit 1
Factory default 0
S2.22 Protection level
Setting range 0.0 ~ 10.0
Minimum unit 0.1
Factory default 2.0
S2.23 Thermal motor time constant
Setting range 0.0 ~ 400.0min
Minimum unit 0.1min
Factory default Depends on model
S2.24 ~ S2.39: Reserved
Used to protect the motor against overheat. Two means of motor thermal pro-
tections are available:
1. Protection with temperature sensor
A temperature sensor needs to be connected externally to the frequency con-
verter. For this matter, 10 V and GND output pins are available on the external
signal connector of the frequency converter.
Fig. 8-24: Protection with temperature sensor
Bosch Rexroth AG
Parameter Settings
EFC 3600
80/259
DOK-RCON03-EFC-3600***-IT03-EN-P