Specifications
RailCorp Engineering Manual — Signals — Equipment Manual
Cerberus Level Crossing Monitor Field Equipment Manual TMG E1261
© RailCorp Page 52 of 89
Issued August 2012 UNCONTROLLED WHEN PRINTED Version 2.1
4.1 General
Their are two processes for fault finding on the Level Crossing Monitors they are; with a
PC, and without a PC.
Fault finding with a PC normally consists of issuing a set of interrogation commands to
examine the monitors current status to find the problem or obtaining a copy of the event
log when the problem occurred and examining the log to determine the probable cause of
the problem. Fault finding using a PC can be conducted locally or remotely.
Fault finding without a PC can only be used to find a fault condition that is still current. It
consists of :
• Examining the front panel indications to check that they are as per Section 3.
• Note any Fault, or Warning condition.
• Examine the state of the inputs indicated on the Input Optoisolator and Battery
voltage to determine if they are the cause of the Fault, or Warning condition.
• Reset any Fault, or Warning condition using the large reset switch on the top right
hand corner of the front panel of the main box.
• If the Monitor returns to No Fault and No Warning then operate the crossing using
the Test switch. If the problem re-occurs then re-examine the input to determine
the cause of the problem.
• If their is a Lamp problem, check the lamps, and the voltage from the current
sensors when the crossing is operating (as per Section 3). This problem can only
be cleared after the monitor has detected the lamps operating correctly.
4.2 Faults reported by Operations
The codes that the Level Crossing Control Centre reports to Operators for a particular
level crossing have the corresponding meaning as per the following table. The report
includes name of the level crossing, date and time the problem occurred, and whether it
is a Fault or Warning.
Code reported by Operations
Level Crossing Monitor, Status
Codes
Code 1 LAMP
Code 2 LOGIC
Code 3 SYSTEM
Code 4 BATTERY
Code 5 TEST
Code 6 COMMUNICATIONS FAIL
Code 7 SECURITY ALARM
Code 8 EMERGENCY SWITCHES
Code 9 No Train for 72 hours
Code 10 No Test for 36 hours
Code 11 Operating Too long
TRAIN DRAGGING EQUIPMENT DRAGGING EQUIPMENT
Note 1: Code 7 Security Alarm is intended to be an alarm on the location door. It is
optional.
Note 2: TRAIN DRAGGING EQUIPMENT alarm that detects Trains Dragging
equipment. It is optional.
The code 6 (Communications Fail) means that the modem, telephone line, or monitor
itself has failed.