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| 2209 points at Barking/Crossovers 22/06/2015 at 12:13 #73605 | |
Mattyq
259 posts |
I have routed a Down train ex EHMEMUD to Upminster via P8 & Up Conn @ Barking to get ahead of 5G86 which is also heading to Upminster via the Down Conn. Is it correct that 2209pts should be locked Normal when a route from P8 is set through 2210/2211 crossover in Reverse? Also, just a curiosity, why are most of the crossovers on the LTS system single ended? Cheers Post has attachments. Log in to view them. Not fat ..... fluffy!! (G Iglesias) Log in to reply |
| 2209 points at Barking/Crossovers 22/06/2015 at 15:30 #73615 | |
GeoffM
6377 posts |
Oops, fixed. The single ended thing is a supposed reduction in failures causing problems - if the failed end is on the other line and trailing and not otherwise protecting then it can be undetected.
SimSig Boss Log in to reply |
| 2209 points at Barking/Crossovers 25/06/2015 at 10:19 #73680 | |
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Mattyq
259 posts |
" said:The single ended thing is a supposed reduction in failures causing problems - if the failed end is on the other line and trailing and not otherwise protecting then it can be undetected.I had a sneaking suspicion that might have been the case. Queensland Rail have introduced "Health Monitored" crossovers into the Brisbane metro area for the same reason. Operationally speaking, these are normal, double ended crossovers. The point motors at each end work off the same circuit (including swing-nose V's and switchable 'K' crossings, where applicable) and keying one end will also lock the other end - just like a normal crossover. However, each end is detected independently so that only the track with the failed points is adversely affected. Where a crossover has a diamond crossing half-way through it (typical quad track crossover) and the diamond is of the switchable variety, it, too, is independently monitored. Not fat ..... fluffy!! (G Iglesias) Log in to reply |