S-60 CROSSING
AUXILIARY OVERLOAD DEVICE
QUICK START GUIDE
Document No. SIG-QG-09-01A.1
The Auxiliary Overload Device (AOD) is an add-on device for
the S-60 Crossing Gate, with a
Rev C or Older Main Board
installed. The AOD is designed to detect an entrance gate
motor stall based on the supply voltage and amount of time
the S-60 actively drives the gate motor. The AOD, upon
detection of a stall condition, will engage a relay, interrupting
the supply of power to the motor and have the gate arm
descend in a controlled manner. The AOD is powered by the
S-60 drive mechanisms and is not capable of introducing
foreign energy or otherwise interfering with the S-60 safety
related motor drive in a manner that would cause an unsafe
condition. Refer to the S-60 Crossing Manual for further
information.
(Siemens Doc. No.: 074050).
WARNING
THIS PROCEDURE WILL REQUIRE TEMPORARY OPENING
AND CLOSING OF HIGHWAY CROSSING WARNING DEVICE
CIRCUITS. PRIOR TO PERFORMING, TAKE THE NECESSARY
PRECAUTIONS TO WARN PEDESTRIANS, PERSONNEL,
TRAINS, AND VEHICLES IN THE AREA UNTIL PROPER
OPERATION IS RESTORED AND VERIFIED.
Prepare Crossing
Prepare the crossing for installation. Open the Gold-Nut,
which will lower the Gate Arm. See S-60 Crossing Gate
Manual
(Siemens Document Number 074050)
for further
information.
NOTE
Visually inspect the gate mechanism to ensure there are no
cams and/or wires attached to terminals T11 top and bottom
and T12 top and bottom.
Gate Mechanism Visual Inspection
Gate Mechanism Visual Inspection
WARNING
IT IS NECESSARY TO FOLLOW THIS PROCEDURE AND
ENSURE WIRES ARE INSTALLED IN THE PROPER
LOCATIONS FOR THE GATE MECHANISM TO OPERATE
PROPERLY.
Wiring Overview
The following is an overview of the AOD wiring:
Hardware Installation Overview
The following is the hardware sequence for the AOD
installation.
MOTOR
EXISTING
CONFIGURATION
GATE
CONTROL
BOARD
AOD
GATE
CONTROL
BOARD
MOTOR
GATE
CONTROL
TO
AOD
AOD
GATE
CONTROL
BOARD
MOTOR
TO
AOD
MOTOR
