Poweramp TPR - TROUBLESHOOTING; Limit Switch Test Procedure

30
4111-0035 — Dec. 2018
© 2018 Systems, LLC
Limit Switch Test Procedure
TROUBLESHOOTING
LS1
LS2
If the LS1 and/or LS2 limit switch is suspected to be
faulty, the switch can be tested with a multimeter.
1. Turn OFF all electrical power to the restraint.
2. Remove motor cover.
3. Remove LS1 and/or LS2 limit switch from
carriage (see Figure 23).
4. Set multimeter to Ohms (continuity test).
5. Attach multimeter leads to pins “B” and “C” of
limit switch connector (see Figure 22).
6. With the plunger released, there should be
no meter reading. With the plunger Pressed, there
should be a full-scale meter reading.
Note: The green (ground) wire of the limit switch does
not have to be tested. A continuity test lamp may be
used instead of a multimeter.
Hook Position LS1 Position LS2 Position Inside Outside
Stored
Closed
(Pressed)
Open
(Released)
Red Green
No Hook
(Under-Travel)
Closed
(Pressed)
Closed
(Pressed)
Red & Amber* Red
Hooked
(Approx. 90°)
Open
(Released)
Closed
(Pressed)
Green Red
No Hook
(Over-Travel)
Closed
(Pressed)
Closed
(Pressed)
Red & Amber* Red
* Audible Alarm (if equipped)
Figure 22
Figure 23