Rockwell Automation 8720SM High Performance AC Induction Motors - Manual (Page 12)

Publication 8720SM-IN001A-EN-P — February 2003
12 8720SM High Performance AC Induction Motors
Verifying Thermal Protector (Thermostat Leads) Connections
The 8720SM motors have three normally closed thermostats. There is
one thermostat per phase, connected in series, with leads terminated
to the feedback connector on the motor via the feedback cable. To
protect against motor overheating, make sure that you connect the
thermostats to the appropriate drive connector. Refer to the table
below for the motor and drive pins. Prior to initial startup assure that
there is very high resistance between each of the motor leads and the
thermal switch leads, as well as very high resistance from ground to
the thermal switch leads. The thermal protector is rated for 170° C
(338° F).
Refer to the 8720MC High Performance Drive Installation Manual
(publication 8720MC-IN001x-EN-P) for wiring and connector
information.
IMPORTANT
Failure to connect the thermostats will void the
motor warranty.
8720SM-xxxxxxxxS1, -S2, and -S4
Motor Feedback Connector Pin 8720SM-xxxxxxxS3 Motor
Feedback Connector Pin
8720MC Connector Pin Signal
R K P1-12 TS+
S L P1-13 TS-