Doran SCC-AM-00 Manual de instalação e operação - Página 6

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1. Basic Operation

Arming

To ARM the SCC and activate the system, a positive battery voltage signal must be

detected at the ARM (P6) terminal with the Ignition on. An example signal to ARM the

unit is the voltage for the Red Warning lights on the top of a bus or the control voltage

for the Stop Arm Sign. Typically these are activated by a front door switch when the

door is opened to load or unload students/passengers. It only takes one event to ARM

the SCC. Once armed, the module will have to be reset via the Safety Switch input,

either before the alarm goes off or after.

No Warning Lights

When a vehicle does not have warning lights, etc., it is still necessary to ARM the

system to activate the required end-of-trip check. Often the Ignition signal or brake

signal is used to ARM the module in this circumstance. It does mean however, that

every time the vehicle is ARMed with ignition, the SCC system will require deactivation

at the end of the trip. (See "Timer Options" for another alternative.)

For testing and trouble shooting, when the SCC is in ARMed state the Yellow LED is

illuminated on the printed circuit board.

Safety System Alarm and System Reset/Deactivate

At the end of the trip, the ignition input will be turned off. If the system is ARMed, the

overhead passenger light relay turns on indicating the vehicle must be checked and

SCC deactivated before exiting. This output may also be used for a remote visual or

audio indicator/reminder for the driver/operator. (See figure)

Example of External Check Bus Indicator

The front door input(s) must remain in the "door closed" condition or state to deactivate

the system by pressing and releasing the reset push button at the rear of the vehicle.

This is required either with or without the ALARM active. If the monitor is not in the

ALARM state, the interior light relay will flash the lights twice to indicate successful

deactivation, and then remain on for 1 minute. If the ALARM has been triggered,