[TCUG] Re: Red lamp monitoring
- From: Jag Morar <jagmorar@xxxxxxxxxxxxxxxxxxxxxxx>
- To: "'tcug@xxxxxxxxxxxxx'" <tcug@xxxxxxxxxxxxx>
- Date: Fri, 10 Oct 2003 12:12:42 +0100
You may be interested to know that TR2210 says, under Signal group
green/absent red (section 9.4), that there is no requirement to check for
the absence of any conflicting red signal. This incident demonstrates that
perhaps we should have compliance checking - which is not necessary
according to TR2210 section 9.7.1.
However, it is surprising that the Software Correspondence check on Siemens
T400 controller did not pick this fault up - probably because they are doing
exactly that which the TR2210 allows them!
Another thing - was red lamp monitoring configured and active on site?
I agree with Mick Hopper, if the Remote Monitoring is provided and the RLM
fault is properly prioritised then we should be able to considerably reduce
the risk of the dangerous situations arising.
Jag Morar
Product Development
Transport for London - SM/NetworkTechnology
Tel. 020 7343 5354
Email: jagmorar@xxxxxxxxxxxxxxxxxxxxxxx
-----Original Message-----
From: Probert, Norman [mailto:Norman.Probert@xxxxxxxxxxxxxxx]
Sent: 10 October 2003 10:58
To: 'tcug@xxxxxxxxxxxxx'
Subject: [TCUG] Re: Red lamp monitoring
Whilst Red Lamp monitoring is the hot topic can I ask if any one else has
experienced the following fault.
The site is a normal crossroads with all round Ped controlled by a Siemens
400, this fault put all traffic aspects out but left the Ped aspects working
including audible. Although I was initially dubious of this being possible a
quick visit to site confirmed the fault description to be correct, obviously
for those with impaired sight this is potentially fatal. The engineer that
attended suggested it was a ribbon cable fault to a phase driver card, which
when refitted removed the fault completely.
Although I can see how traffic phases can fail and leave pedestrian phases
still working, I cannot see how the red lamp monitoring which we rely upon
did not operate and inhibit the Peds. Finally once up and running again the
lamp monitoring was checked and worked perfectly.
Thanks
Norman Probert
AmeyMouchel - HA Area 9
-----Original Message-----
From: Foy, Bob [mailto:Bob.Foy@xxxxxxxxxxxxxxxx]
Sent: 10 October 2003 10:19 am
To: 'tcug@xxxxxxxxxxxxx'
Subject: [TCUG] Re: Red lamp monitoring
A cable fault or deteriorating transformer to the red can cause an excess
current to flow. The Microsense controller registers this as a conflict in
the fault log and this excess current will cause the problems you are
experiencing.
Alternately, the controller lamp monitoring may have been learned with -1
red and when the red failure occured 2 reds were seen unlit.
> -----Original Message-----
> From: m.hopper@xxxxxxxxxxxxxxx [SMTP:m.hopper@xxxxxxxxxxxxxxx]
> Sent: 10 October 2003 09:16
> To: tcug@xxxxxxxxxxxxx
> Subject: [TCUG] Re: Red lamp monitoring
>
> One of the KPI's that the SW TCUG are trying to promote is 100 percent
> remote monitoring. This achieved either via good reliable RMS systems or
> UTC. The adoption of this standard should, if we have equipment that is
> fit for purpose, and we have short response times to single red lamp
> faults, hopefully never or at least rarely get to a position where two
> reds are out and the pedestrians are inhibited. I know this is ideal world
>
> stuff but we should I hope be aiming for this.
> Having said that we are experiencing sites (Microsense Controllers) which
> are inhibiting the pedestrians on a single red failure. This we are
> investigating, is it me or is them.
>
> Mick
>
>
> -----------------------------------------------------------
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