Alliance Laundry Systems 160 - Manual (Page 91)

Allen-Bradley 1336-Series AC Drives
89 F232120 © Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
Motor Thermal Protection
On some machines the motor is equipped with a
thermal protection switch. Switch inputs are placed
between TB3-24 and TB3-25. If an over-temp occurs,
the switch is opened triggering a drive fault indicator
light to illuminate. If no thermal switch is present, the
connections are jumpered. This input can be viewed in
the Input Status parameter. For normal operation, logic
input for “Motor Temp” remains “1”. If the logic input
is “0”, a jumper is missing or an over-temp condition
exists with the motor.
Fault Indicator Light
The A-B 1336 is equipped with a mechanical relay
which transitions when a drive fault occurs. Some
machines use this contact for lighting an external
indicator light. This relay is used to switch the neutral
(AC common) lead to the fault indictor light and
connects between TB3-13 and TB3-14. Refer to
Figure 50.
CAUTION
MACHINE DAMAGE AND/OR PERSONAL
INJURY. Never jumper inputs if not
previously configured with jumpers as
identified on the applicable electrical
schematic. Jumpering these inputs will
override safety features.
W665