Page 262 - IRSEM_Main Book
P. 262
Example of Fault
Fault Name Ref: Fault Information Momentary Confirmed
Message
T1,T2,T3 are sequential tracks,
a) When T2 is DN.
b) T1 and T3 UP.
c) The time difference between T1 UP and T2 DN is 51 TPR Track
6 Track Circuit Failure RDSO M C (120 Sec)
more than 5 Sec. Circuit Failure
d) The time difference between T3 UP and T2 DN is
more than 5 Sec.
e) T2 is not bobbing and is DN for more than 10 Sec.
When 110 V supply to signals has not failed (i.e. analog
voltage value is used in fault logic)
a) Yellow (three aspect): After HR picks UP and DR is
DOWN, if HECR is not picked UP within 10 seconds.
HR is triggering signal
b) Green (three aspect): After HR and DR pickup if DECR S1 HHG Fusing of
7 Fusing of Signal Lamp RDSO has not picked UP within 10 seconds. HR and DR is M C (120 Sec) Signal lamp
triggering signal.
c) Red: After HR/DR is DN, if RECR has not picked UP
within 10 seconds. HR/DR is triggering signal.
d) Yellow/green (two aspect): After HR/DR picks UP, if
HECR/DECR has not picked UP within 10 seconds.
HR/DR is triggering signal.
When 110 V supply to signals has not failed and all ECRs
8 Signal Blanking RDSO M C (120 Sec) S1 Signal Blanking
are down (i.e. analog voltage value is used in fault logic).
Chapter 11: Dataloggers and Predictive Maintenance Systems Page 226 of 535
