Rockwell Automation 8720MC High Performance Drives Installation Manual - Manual (Page 61)

Publication 8720MC-IN001D-EN-P — December 2002
8720MC Connector Data 2-27
Thermostat Input
The 8720MC can monitor a thermostat signal from a motor and will
generate a fault if the motor overheats. Figure 2.21 shows the
configuration of the thermostat input. Figure 2.22 shows a typical
connection to a motor with a normally closed thermostat. The logic is
designed so that an open condition will generate a fault. If the motor
does not have a thermostat signal, the drive can be configured
through software to ignore the signal.
Figure 2.21
Thermostat Input Configuration
Figure 2.22
Typical Thermostat Connection
6.8k Ω
1k Ω
+ 5 V
+ 5 V
0.01 µF
COMMON COMMON
TS+
TS-
TS+
TS-
Thermostat
normally
closed
Drive Motor/Encoder