MIREL VZ1, Maintenance And Diagnostics Manual, Page: 26 / 33

154VZ1 : 190111
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8 Faults
Train protection faults are divided into two groups. Specifically
there are faults that prevent subsequent use of the train protec-
tion system and faults that restrict subsequent use of the train
protection system. The system is automatically switched into
safe mode when a fault that prevents subsequent use of the system is detected; the EPV
opens and the emergency brake is activated. The
ERR (ZJ8) indicator lights on the front
panel of the central unit. When a fault occurs, the operator should first switch off the train
protection system circuit breaker for at least 5 seconds and then switch it back on to re-
initialise the train protection system. If the fault appears again, the locomotive operator
should not take any additional action to remedy the fault.
After re-initialising the system, it should be noted that the system operates using the pre-set
operating parameters.
For more precise troubleshooting, the error code can be displayed by pushing the button
(NO14) on the signal repeater in the active cab showing a fault to bring up with numbered
system error code. The faults detected by system diagnostics are presented in the following
table.
Faults that prevent subsequent use of the train protection system:
E00
Permanent loss of primary signal repeater module communication
with the central unit
E01 Fault detected by central unit WD-type watchdog circuits
E02 Central unit EEPROM memory fault
E03
General fault of signal repeater primary module in the active cab
§ fault detected by WD-type watchdog circuits
§ FLASH, EEPROM, RAM memory fault
§ faults in decoding and processor execution of instructions
§ communication fault
§ fault in integrity of configured parameters
E04 Fault in central unit communication with signal repeater primary module in cab 1
E05 Fult in central unit communication with signal repeater primary module in cab 2
E06 Fault in communication between central unit processor modules
E07
Fault in code monitoring transmission route detected by
D1 start-up diagnostics
E08 EPV fault detected by D1 start-up diagnostics
E09
Fault if D1 start-up diagnostics are not completed within 4 hours from switching
on the system
E10 Intervention integrity fault between central unit processor modules
E11
EPV fault during a train protection system intervention – low pressure drop in
main brake pipe
E12 Locomotive movement at low pressure in main brake pipe
E14 Integrity fault in maximal speed evaluation
E15
Integrity fault in transmitted signal sign evaluation based on LS specifications or
speed command evaluation based on EVM specifications
E17 Start-up fault in central unit processor modules
E18 Start-up fault in signal repeater primary module in the active cab
E19 Start-up fault in signal repeater control module in the active cab
E20 Instantaneous speed measurement fault