[TCUG] Re: Lamp Monitoring of LED Heads on Siemens RMS
- From: "Pat Gregory" <patrick.gregory2@xxxxxxxxxxxxxx>
- To: <tcug@xxxxxxxxxxxxx>
- Date: Fri, 18 Jul 2008 11:43:57 +0100
I'm pretty sure that due to the inherent problems with LED signals in
general, you cannot monitor them effectively. Certainly Siemens do not
recommend monitoring these signals via their controllers! One of the
problems with the equipment is that the lamp currents do not lower
exponentially when dim, giving rise to false lamp faults and/or extra lamps
on reports. I would suggest that if monitoring is available with the signals
themselves configure this as a digital input to the RMS.
Regards
Pat Gregory
Director
Traffic and Transportation Services Ltd
74 Meadowside
Eltham
London
SE9 6BB
Tel/Fax: 0208 8505271
Mob: 07967 725039
-----Original Message-----
From: tcug-bounce@xxxxxxxxxxxxx [mailto:tcug-bounce@xxxxxxxxxxxxx] On Behalf
Of Robert Mansell
Sent: 17 July 2008 15:41
To: tcug@xxxxxxxxxxxxx
Subject: [TCUG] Lamp Monitoring of LED Heads on Siemens RMS
When installing a Siemens RMS OMU into a non-Siemens controller, you would
normally fit torroids to perform lamp monitoring. Our new sites are now
installed with LED signals, has anyone any experience of how RMS copes with
monitoring LEDs?
Specifically, we have Microsense LED Signal Heads, the type that use a sense
wire for monitoring the reds, the newer 3G TSEU signal heads and also Peek
Elite LED.
Thanks
Robert Mansell
The City of Edinburgh Council
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