Specifications

Engineering Standard –NSW
Signalling SMS 02
Cerberus Level Crossing Monitor Equipment
March 2005 Version 1.2 © Australian Rail Track Corporation Page 111 of 118
This document is uncontrolled when printed.
; Low battery timer so that short voltage dips
are ignored. *LOW_BATT_TIMER =T 3s
!BATT_ALARM_CARD +*BATT_LOW
; Check of ancillary deterors that may be fitted later. ;
Dragging equipment detector and door alarm.
*SECURITY = DOOR_SWITCH
*TRAIN_FAULT = DRAG_EQUIP
;; Other user status bits. These are assigned as follows.
;; *USER_STATUS1 = !HIGH_LOAD
;; *USER_STATUS2 = whatever.
;; These must be included in Failure or warnings and added to
;; Control Centre database for the message required.
; Warning Expressions
* DO_WARNING = [ ! * RESET & * DO_WARNING] + * AC_SUP_WAR + * ONE_LAMP_OUT +
*SYSTEM_FAULT + *EMERGENCY_SW
; Fault Expressions
; Don't forget to include *GATE_FAIL if their are BOOMs.
*FAULT_ON = *STICK_FAIL + *NOT_START + *NOT_STOP + *FLASH_FAIL + *TOO_LONG
* DO_FAULT = [ ! * RESET & * DO_FAULT] + * FAULT_ON + * LOW_BATT_TIMER + * LAMP_FAULT
+ *BATT_RELAY_FAULT + *BATT_TEST_FAULT
; Set output expressions
NO_LX_WARNING = !*DO_WARNING & !*NO_TRAIN & !*NO_TEST
NO_LX_FAULT = ! * DO_FAULT
SYS_FAULT = *SYSTEM_FAULT
LOGIC = *FAULT_ON + *BATT_RELAY_FAULT + LOGIC & !*RESET
LAMP = *ONE_LAMP_OUT + *LAMP_FAULT + LAMP & !*RESET
BATTERY = *LOW_BATT_TIMER + *AC_SUP_WAR + *BATT_TEST_FAULT + BATTERY &
!*RESET
; Battery Expression
; fail point, battery offset, battery test channel, battery test min on
current
; max test off current
; set battery fail point to 14.1 for 12 cells and 11.7 for 10 cells ;
set the battery offset for 0.16 as this is typical
; battery test channel is 8
; battery test min of 6.0 (amps) is the minimum current required during
battery test
; battery max test off current is the maximum current allowed when no test is ;
being done, the value of 1.0 allows for the current sensor offset
*BATTERY =B 11.7 0.16 8 6.0 1.0
; Lamps Expressions
; analogue channel number, num lamps flasher up, num lamps flasher down, ;
flasher input name
*SS_LAMPS =L 2 2 2 FLASH_SYD *
CS_LAMPS =L 4 2 2 FLASH_COU
; if you have boom gates you need the following for the boom tip lights
;*SS_TIP =L 3 1 0 STEADY
;*CS_TIP =L 5 1 0 STEADY
; END of Expression file