Specifications

RailCorp Engineering Manual — Signals — Equipment Manual

Cerberus Level Crossing Monitor Field Equipment Manual TMG E1261

Issued August 2012 UNCONTROLLED WHEN PRINTED Version 2.1

• For each lamp analogue input, its name, analogue channel number, number of

lamps expected on flasher up, number of lamps expected on flasher down, flasher

input.

• For the battery test current analogue input, its name, analogue channel number, on

current in amperes, off current in amperes.

Configurable items that can be changed during normal operation are:

• Name of crossing

• Phone numbers to report too

• Serial port set-up

• Reporting state. That is report changes, dial-up on status change, or do not report

changes or dial-up on status change.

• Current date and time

• Battery bus offset from measured value

• Lamp offsets for each particular lamp set. This may be required to allow for

variations in level crossing installations. This information can be manually entered

but is normally set during the lamp learn function (described later)

2 Operation and Functional Checks

2.1 General

The front panel layout of the level crossing monitor is detailed in drawing M08-865A. The

No Fault, No Warning, +5V, +12V, -12V, and Led 2 are green in colour. All other LEDs

are red.

In the normal state all the green LEDs should be on. That is the +5, +12, -12 power

supply indications, the No Fault, No Warning, should all have their green LEDs lit.

Led 2 (green) on the SCADA 2000 A I/O board should be lit continuously.

Led 4 (red) on the SCADA 2000A I/O board should be flashing once every 0.25 seconds,

Led 3 (red) may be on or off, and Led 14 (red) should be on. All other LEDs should be off.

The SCADA 2000 A I/O Boards front panel LEDs have the following meaning:

LED1: Normally off, Flashing or permanently ON means a Board Error on start-up or

too many resets in the last 5 minutes.

LED2: Normally on, means board successfully passed start-up tests

LED3: On when a command is being processed either locally or remotely.

LED4: Normally flashing, means that logging and monitoring is occurring.

LED5: Should be off, flashes for when a character is received on a serial port

LED6: Should be off, flashes for each Carrier Detect change on a serial port

LED7-13: Should be Off, Means that Bits 1 to 56 are configured as inputs.

LED14: Should be On, Means that Bits 57 to 64 are configured as outputs.

The Level Crossing monitor is comprised of the following components.

• Main Box

• Current sensors

• Vital Indication Optoisolators(VIO)