Specifications

Engineering Standard –NSW
Signalling SMS 02
Cerberus Level Crossing Monitor Equipment
March 2005 Version 1.2 © Australian Rail Track Corporation Page 20 of 118
This document is uncontrolled when printed.
 Name and date of the permanent configuration data.
 For each digital input, its name.
 For each digital output, and intermediate state, their name and
controlling Boolean expression.
 For each Timer its name, controlling Boolean expression, and
duration in hours, minutes, and seconds.
 For the battery analogue input, its name, fail voltage, and bus
voltage correction.
 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)
3. Operation and Functional Checks
3.1 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.