Factory 2: Motor Bearing Supervision With Pt100 - ABB CM-TCN Manual

4.1.2.

Factory 2: Motor bearing supervision with PT100

Profile 2 focuses on motor bearing instead of motor winding supervision. For
each of the bearings (left and right) a PT100 sensor is configured. Like the motor
winding supervision, the profile offers a pre-warning at 90 °C tripping relay 1 and
a switch off threshold at 110°C tripping relay 2.
The hysteresis for both thresholds is set to 5 K. Relay 3 trips in case of sensor er-
rors. The relays operate in closed circuit principle. Automatic reset is active for
all output relays.
The operating logic and the settings are displayed in the block diagram:
STATUS
Approved
© Copyright 2020 ABB. All rights reserved.
SECURITY LEVEL
Public
S M ART T EMP ER ATUR E MONITORI NG R EL AYS
DOCUMENT ID.
2CDC112285M0201
REV. LANG. PAGE
B en 15/42