5.3 LIM Wiring
To watch the instructional video for the LIM module wiring, simply use
the following QR Code. Or, the instructional video can also be found
at www.YouTube.com by entering the search word “OPWGlobal”.
LIM modules should have dedicated AC power and two (2) ground
connections for the module and barrier.
With every LIM installation, noise suppressors are required to reduce
the “noise” when the STP coil contact closes; thereby, clipping the
noise back through the HV Feedback and HV Output.
1. Pull two (2) AC power wires and one (1) ground wire (14-
AWG minimum) from the circuit breaker to each LIM module.
2. All AC power must be in the same phase.
Note the phase the LIM relay is on connected to the STP terminal
motor. The LIM should be on the STP HV Feedback phase, as shown
in Figure 5-6. This may vary slightly depending on the type of STP
on site.
3. Install the noise suppressor between the coil of the LIM relay
and neutral, and the phase leg of the STP and neutral in the
STP contact.
Figure 5-2 LIM Module Wiring Connections
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