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INTRODUCTION
1.2.3
Gate Arm Loop Detection System
The Gate Arm Loop Detection system employs a thin gauge wire loop running down the length of the
gate arm. The controller monitors the gate arm loop wire as a series circuit. The series loop will break
when a gate arm is broken, providing indication of a malfunctioning system. Alarms can be sent via the
serial link to notify maintenance personnel remotely.
1.2.4
Door Switch
The Door Switch connection has been designed for future enhanced features and currently has a jumper
on the connector to close the door switch circuit. Removing the jumper will turn off the display backlight
and some of the LED indications. Removing the jumper will not have any adverse effect on the normal
operation of the mechanism.
1.3
PC CONTROL BOARD OVERVIEW
The S-80 PC Control Board is plug coupled to minimize wire disarrangement when replacing
components. The control board has an array of diagnostic LEDs to monitor the condition of the
mechanism, minimizing the need for a multi-meter when troubleshooting.
In addition, the Mini Track Side Sensor (MTSS) technology is built into the S-80 control board so there is
no need for an additional MTSS daughter card to enable this functionality.
The S-80 is designed to run on both 12 and 24 Volt DC systems and therefore operates over a wide
voltage range from 9 to 36 VDC. There is no longer a need for an additional DC-to-DC converter to apply
the gate to 24 VDC systems.
The control board is detailed in the following figure.
SIG-QG-21-01
Version: A
1-4
NOVEMBER 2021
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