Specifications

RailCorp Engineering Manual — Signals — Equipment Manual
Cerberus Level Crossing Monitor Field Equipment Manual TMG E1261
© RailCorp Page 55 of 89
Issued August 2012 UNCONTROLLED WHEN PRINTED Version 2.1
details those factors that affect the lamp offsets. Lamps offsets for FU (Flasher Up,
flasher contact 12 and 11 made), and FD (Flasher Down, flasher contact 12 and 13
made) should be within 2 counts.
If the lamp learn did not accept all of the new offsets then proceed as per the section on
Lamp learn rejects results.
Zero lamps detected on either the Country Side or Sydney Side lamp circuits.
Check flasher inputs and the CSF ZK and the SSF ZK VIOs. See Section 3.4.5 of this
manual.
Check the calibration of the Current Sensors is as per Section 3.3.4 of this manual.
Check Current Sensor output is in the correct range for the number of lamps as per
Section 3.3.3 of this manual.
Check the analogue inputs on the back of the monitor unit reflect the Current Sensor
outputs.
Check the configuration in the monitor is correct.
4.3.6 Lamp problem detected while Crossing not operating
Check the calibration of the Current Sensors is as per Section 3.3.4 of this manual.
Check that the link on current sensor is installed correctly for the site. Refer to section
3.3.5 of this manual for guidance on setting the link.
Check the XR input is operating correctly.
Check SS_LIGHT_ZK, and CS_LIGHT_ZK Emergency switch inputs for correct
operation.
If the Current sensor can not be calibrated then replace it.
If the monitor continuously detects lamps then check the voltage on the appropriate
analogue input when the crossing is not operating. It should be the same as that on the
current sensor output and less than 80 mV. If this is the case, then replace the main box.
If the problem is intermittent and is not solved by the suggestions given then refer the
problem to Signal Engineering, Technical Services.
4.3.7 Battery test does not work
Check no fault exists.
Check that the monitor passes the system test.
Check battery test timer is okay and set for the correct time length.
Check battery test relays operate in the correct sequence.
Check test cut off input.
Check battery test current sensor is correctly calibrated.
Check battery test current sensor output.
Check batteries.