Installation
May 2008 – Revision 1.3
Page 28 of 62
3M™ Wireless Communication System Model XT-1
Installation Manual
Vehicle Detector LED
There are two small LEDs on the vehicle detector that can be in one of three
states when powered and operating:
•
Steady green—indicates that power is applied and no vehicle is
currently detected.
•
Flashing green, double flash every 1.5 seconds—indicates an open loop
fault (a wire is disconnected or severed).
•
Flashing green, single flash every 1.5 seconds—indicates a shorted
loop fault (the loop wires are making unwanted contact at some point
before they reach the loop detector).
•
Steady red—indicates that power is applied and a vehicle is currently
detected.
Note:
The vehicle detector fails closed; therefore if there is a fault, the system
assumes that there is a vehicle present.
Greeter Module
There is one space along the bottom right of the base station for the optional
greeter module. Perform the following procedure to install it.
1.
Ensure that the base station is unplugged.
2.
Remove the base station cover, see page 14.
3.
Align the top of the greeter module with the installation slots.
4.
Slide the sides of the greeter module board between the slots.
5.
Carefully install the flat cable between the greeter module board and
the base station board. The left-to-right pin order is the same on both
boards: the left pin on one corresponds to the left pin on the other.
