Remote Control Overrides - Revision history

Danny at 15:16, 15 January 2015

2015-01-15T15:16:02Z

← Older revision		Revision as of 15:16, 15 January 2015
Line 218:		Line 218:

	[Danny Scroggins, Swindon B, March 2008.]		[Danny Scroggins, Swindon B, March 2008.]

			==References==

			<references/>

Danny at 13:18, 29 December 2014

2014-12-29T13:18:22Z

← Older revision		Revision as of 13:18, 29 December 2014
Line 2:		Line 2:
	==Overview==		==Overview==

	Remote interlockings operated from the panel box are susceptible to failure if the control link between the panel and the interlocking fails.		Remote [[interlockings]] operated from the panel box are susceptible to failure if the control link between the panel and the interlocking fails.

	In the case of electronic remote controls, an override system is sometimes provided.		In the case of electronic remote controls, an override system is sometimes provided.
Line 10:		Line 10:
	==Electronic Remote Controls==		==Electronic Remote Controls==

	Electronic Remote Controls exist at:		Electronic Remote Controls exist for the following [[interlockings]]:
	* [[Uffington]]		* [[Uffington]]
	* [[Bourton]]		* [[Bourton]]

Danny at 13:17, 29 December 2014

2014-12-29T13:17:05Z

@@ Line 7: / Line 7: @@
 Some interlockings are directly controlled and some are controlled by an electronic remote control system.
 ==Failure of an Electronic Link==
@@ Line 24: / Line 39: @@
 In any case, if the signalling becomes inoperable from the normal panel controls, it may be possible to regain a reduced level of control from the Remote Control Override ("Through Routes" and "Selective Overrides").
 ==Panel Indications of Remote Control Boundaries==

Danny at 13:16, 29 December 2014

2014-12-29T13:16:41Z

← Older revision		Revision as of 13:16, 29 December 2014
Line 7:		Line 7:

	Some interlockings are directly controlled and some are controlled by an electronic remote control system.		Some interlockings are directly controlled and some are controlled by an electronic remote control system.

			==Failure of an Electronic Link==

			(Rule Book Module T1B, Section 2.3 – Failure of an electronic link)

			The failure of the remote control link will be apparent to the signalman by one or more of the following symptoms:
			* Signal(s) in the area appearing to not clear;
			* Signal(s) in the area appearing to not return to danger after the passage of trains or on turning of the entrance switch to ‘normal’;
			* Signal(s) returning to danger of their own accord;
			* A whole area of track circuits showing red (#);
			* A whole area of track circuits/signals showing black (#);
			* A whole area of points out of correspondence (*).
			(#) - with or without white lamps flashing through the track circuit / route lamp apertures to denote the limit of the failure.

			From the moment the failure of the electronic link occurs, the track circuit, signal and point indications in the area concerned cannot be relied on (T1B, 2.3). So the signalman must disregard all the indications in the area concerned.

			In any case, if the signalling becomes inoperable from the normal panel controls, it may be possible to regain a reduced level of control from the Remote Control Override ("Through Routes" and "Selective Overrides").

	==Electronic Remote Controls==		==Electronic Remote Controls==

Danny: /* Failure of an Electronic Link */

2014-12-29T13:14:46Z

Failure of an Electronic Link

@@ Line 23: / Line 23: @@
 The interlocking functions for signalling in these remote control areas is performed in relay rooms at the site, from which the signalling is directly controlled. The controls and indications on the panel for these areas only send requests and receive indications between Swindon and the remote interlocking. (Whereas the controls and indications for the Swindon – Wootton Bassett area work directly to and from the equipment.)
-==Failure of an Electronic Link==
+==Panel Indications of Remote Control Boundaries==
-(Rule Book Module T1B, Section 2.3 – Failure of an electronic link)
+The lights are:
-The failure of the remote control link will be apparent to the signalman by one or more of the following symptoms:
+{| class="wikitable"
-* Signal(s) in the area appearing to not clear;
+|-
-* Signal(s) in the area appearing to not return to danger after the passage of trains or on turning of the entrance switch to ‘normal’;
+!Between !! And !! Line !! White lights
-* Signal(s) returning to danger of their own accord;
+|-
-* A whole area of track circuits showing red (#);
+| rowspan="2" | Swindon B || rowspan = "2" | Uffington || Down Main || East end (SB)PV<ref name="SB_Uff">SPS Photo site: https://flic.kr/p/pqax6X</ref><br>End of panel
-* A whole area of track circuits/signals showing black (#);
+|-
-* A whole area of points out of correspondence*.
+| Up Main || East end (SB)TB-TE<ref name="SB_Uff" /><br>End of panel
-(#) - with or without white lamps flashing through the track circuit / route lamp apertures to denote the limit of the failure.
+|-
-From the moment the failure of the electronic link occurs, the track circuit, signal and point indications in the area concerned cannot be relied on (T1B, 2.3). So the signalman must disregard all the indications in the area concerned.
+Swindon <> Wootton Bassett East -
+Wootton Bassett East used to be direct wired, but latterly was controlled by Remote Control. Not sure if indication lamps were fitted at the boundary....
 ==Remote Control Overrides==

Danny: /* Failure of an Electronic Link */

2014-12-29T13:13:28Z

Failure of an Electronic Link

← Older revision		Revision as of 13:13, 29 December 2014
Line 31:		Line 31:
	* Signal(s) in the area appearing to not return to danger after the passage of trains or on turning of the entrance switch to ‘normal’;		* Signal(s) in the area appearing to not return to danger after the passage of trains or on turning of the entrance switch to ‘normal’;
	* Signal(s) returning to danger of their own accord;		* Signal(s) returning to danger of their own accord;
	* A whole area of track circuits showing red#;		* A whole area of track circuits showing red (#);
	* A whole area of track circuits/signals showing black#;		* A whole area of track circuits/signals showing black (#);
	* A whole area of points out of correspondence*.		* A whole area of points out of correspondence*.
	# - with or without white lamps flashing through the track circuit / route lamp apertures to denote the limit of the failure.		(#) - with or without white lamps flashing through the track circuit / route lamp apertures to denote the limit of the failure.

	From the moment the failure of the electronic link occurs, the track circuit, signal and point indications in the area concerned cannot be relied on (T1B, 2.3). So the signalman must disregard all the indications in the area concerned.		From the moment the failure of the electronic link occurs, the track circuit, signal and point indications in the area concerned cannot be relied on (T1B, 2.3). So the signalman must disregard all the indications in the area concerned.

Danny: /* Electronic Remote Controls */

2014-12-29T13:13:00Z

Electronic Remote Controls

← Older revision		Revision as of 13:13, 29 December 2014
Line 16:		Line 16:
	* [[Chippenham]]		* [[Chippenham]]
	* [[Thingley]]		* [[Thingley]]
	* [[Wootton Bassett ~~West~~]]		* [[Wootton Bassett]] West
	* [[Hullavington]]		* [[Hullavington]]
	* [[Kemble]]		* [[Kemble]]

Danny: /* Electronic Remote Controls */

2014-12-29T13:12:45Z

Electronic Remote Controls

← Older revision		Revision as of 13:12, 29 December 2014
Line 19:		Line 19:
	* [[Hullavington]]		* [[Hullavington]]
	* [[Kemble]]		* [[Kemble]]
	(Signalling between [[Highworth]] Junction and [[~~Wootton Bassett~~]] ~~East Junction~~ (inclusive) is "directly and individually" controlled from Swindon.)		(Signalling between [[Highworth]] Junction and [[Rushey Platt]] (inclusive) is "directly and individually" controlled from Swindon by direct wires, so there is no remote control system for these interlocking areas. [[Wootton Bassett]] East was controlled by direct wire until ~2010 when a remote control system was fitted. No overrides were provided for this new system.)

	The interlocking functions for signalling in these remote control areas is performed in relay rooms at the site, from which the signalling is directly controlled. The controls and indications on the panel for these areas only send requests and receive indications between Swindon and the remote interlocking. (Whereas the controls and indications for the Swindon – Wootton Bassett area work directly to and from the equipment.)		The interlocking functions for signalling in these remote control areas is performed in relay rooms at the site, from which the signalling is directly controlled. The controls and indications on the panel for these areas only send requests and receive indications between Swindon and the remote interlocking. (Whereas the controls and indications for the Swindon – Wootton Bassett area work directly to and from the equipment.)

Danny at 13:10, 29 December 2014

2014-12-29T13:10:17Z

← Older revision		Revision as of 13:10, 29 December 2014
Line 102:		Line 102:
	There is no override at South Marston, instead TWO remote control links are provided: 'STSYEM 1' and 'SYSTEM 2'. Switches are provided on the panel above the South Marston tiles to control the links and alarms. The fault bell will ring if either link fails and the lamp will flash to indicate which alarm. The links should automatically change over if one fails. The alarm is silenced by turning the switch. If BOTH links fail, game over.		There is no override at South Marston, instead TWO remote control links are provided: 'STSYEM 1' and 'SYSTEM 2'. Switches are provided on the panel above the South Marston tiles to control the links and alarms. The fault bell will ring if either link fails and the lamp will flash to indicate which alarm. The links should automatically change over if one fails. The alarm is silenced by turning the switch. If BOTH links fail, game over.

	===[[Thingley & Chippenham]]===		===[[Thingley]] & [[Chippenham]]===
	THROUGH routes provided for:		THROUGH routes provided for:
	* Up and down the Main.		* Up and down the Main.
Line 115:		Line 115:
	* IMPORTANT NOTE – When resuming normal working at Chippenham & Thingley, it is important to select the through routes for up and down the main, then to set up the sympathetic routes on the panel, then turn the 'SIGNALS RED / NORMAL / THROUGH ROUTES' switch back to 'NORMAL'. Resuming normal working without the sympathetic routes set up and down the main at Chippenham & Thingley will cause the system to malfunction.		* IMPORTANT NOTE – When resuming normal working at Chippenham & Thingley, it is important to select the through routes for up and down the main, then to set up the sympathetic routes on the panel, then turn the 'SIGNALS RED / NORMAL / THROUGH ROUTES' switch back to 'NORMAL'. Resuming normal working without the sympathetic routes set up and down the main at Chippenham & Thingley will cause the system to malfunction.

	===[[Wootton Bassett ~~West~~]]===		===[[Wootton Bassett]] West===
	THROUGH routes provided for:		THROUGH routes provided for:
	* Up and down the Badminton.		* Up and down the Badminton.

Danny at 13:09, 29 December 2014

2014-12-29T13:09:44Z

← Older revision		Revision as of 13:09, 29 December 2014
Line 11:		Line 11:

	Electronic Remote Controls exist at:		Electronic Remote Controls exist at:
	* Uffington		* [[Uffington]]
	* Bourton		* [[Bourton]]
	* South Marston		* [[South Marston]]
	* Chippenham		* [[Chippenham]]
	* Thingley		* [[Thingley]]
	* Wootton Bassett West		* [[Wootton Bassett West]]
	* Hullavington		* [[Hullavington]]
	* Kemble		* [[Kemble]]
	(Signalling between Highworth Junction and Wootton Bassett East Junction (inclusive) is ~~“directly~~ and ~~individually”~~ controlled from Swindon.)		(Signalling between [[Highworth]] Junction and [[Wootton Bassett]] East Junction (inclusive) is "directly and individually" controlled from Swindon.)

	The interlocking functions for signalling in these remote control areas is performed in relay rooms at the site, from which the signalling is directly controlled. The controls and indications on the panel for these areas only send requests and receive indications between Swindon and the remote interlocking. (Whereas the controls and indications for the Swindon – Wootton Bassett area work directly to and from the equipment.)		The interlocking functions for signalling in these remote control areas is performed in relay rooms at the site, from which the signalling is directly controlled. The controls and indications on the panel for these areas only send requests and receive indications between Swindon and the remote interlocking. (Whereas the controls and indications for the Swindon – Wootton Bassett area work directly to and from the equipment.)
Line 66:		Line 66:
	==Behaviour of Train Describer==		==Behaviour of Train Describer==

	If the Remote Control Override is being used due to signals returning to danger of their own accord (ie, the link is ‘blipping’), it may be the case that the indications in the panel are still largely working. In this case, it is helpful to set up the routes on the panel in sympathy with your Selection on the Remote Control Override. This will have NO effect on the signalling outside equipment whatsoever (remember, we are overriding the remote control), but it will allow the train describer in the panel to work correctly. The TD is a non-safety critical system, and as such it steps the descriptions based on the track circuit ''indications'', which is gets through the remote control, however it will only do this if the remote control system 'thinks' the signals are cleared. The TD can't recognise signals being cleared by override, only by the panel controls, so operation of the panel switches will fool the describer into believing that the remote control is working and it will then step the descriptions (99% of the time). If the nature of the failure is such that the panel indications are completely extinguished for the area concerned then the TD has no way of 'seeing' even TC indications, so the signalman must make a note of the descriptions as they enter the 'black hole’ and re-interpose them when they come out the other end (describing by telephone to an adjacent box if necessary).		If the Remote Control Override is being used due to signals returning to danger of their own accord (ie, the link is ‘blipping’), it may be the case that the indications in the panel are still largely working. In this case, it is helpful to set up the routes on the panel in sympathy with your Selection on the Remote Control Override. This will have NO effect on the signalling outside equipment whatsoever (remember, we are overriding the remote control), but it will allow the [[train describer]] in the panel to work correctly. The TD is a non-safety critical system, and as such it steps the descriptions based on the track circuit ''indications'', which is gets through the remote control, however it will only do this if the remote control system 'thinks' the signals are cleared. The TD can't recognise signals being cleared by override, only by the panel controls, so operation of the panel switches will fool the describer into believing that the remote control is working and it will then step the descriptions (99% of the time). If the nature of the failure is such that the panel indications are completely extinguished for the area concerned then the TD has no way of 'seeing' even TC indications, so the signalman must make a note of the descriptions as they enter the 'black hole’ and re-interpose them when they come out the other end (describing by telephone to an adjacent box if necessary).

	==Changing the Route==		==Changing the Route==
Line 85:		Line 85:
	==Specialities and Quirks==		==Specialities and Quirks==

	===Uffington===		===[[Uffington]]===
	THROUGH routes provided for:		THROUGH routes provided for:
	* Up and down the Main.		* Up and down the Main.
Line 92:		Line 92:
	* Up movements Down Main Reversible to Up Main.		* Up movements Down Main Reversible to Up Main.

	===Bourton===		===[[Bourton]]===
	THROUGH routes provided for:		THROUGH routes provided for:
	* Up and down the Main.		* Up and down the Main.
Line 99:		Line 99:
	* Up movements Down Main Reversible to Up Main.		* Up movements Down Main Reversible to Up Main.

	===South Marston===		===[[South Marston]]===
	There is no override at South Marston, instead TWO remote control links are provided: 'STSYEM 1' and 'SYSTEM 2'. Switches are provided on the panel above the South Marston tiles to control the links and alarms. The fault bell will ring if either link fails and the lamp will flash to indicate which alarm. The links should automatically change over if one fails. The alarm is silenced by turning the switch. If BOTH links fail, game over.		There is no override at South Marston, instead TWO remote control links are provided: 'STSYEM 1' and 'SYSTEM 2'. Switches are provided on the panel above the South Marston tiles to control the links and alarms. The fault bell will ring if either link fails and the lamp will flash to indicate which alarm. The links should automatically change over if one fails. The alarm is silenced by turning the switch. If BOTH links fail, game over.

	===Thingley & Chippenham===		===[[Thingley & Chippenham]]===
	THROUGH routes provided for:		THROUGH routes provided for:
	* Up and down the Main.		* Up and down the Main.
Line 115:		Line 115:
	* IMPORTANT NOTE – When resuming normal working at Chippenham & Thingley, it is important to select the through routes for up and down the main, then to set up the sympathetic routes on the panel, then turn the 'SIGNALS RED / NORMAL / THROUGH ROUTES' switch back to 'NORMAL'. Resuming normal working without the sympathetic routes set up and down the main at Chippenham & Thingley will cause the system to malfunction.		* IMPORTANT NOTE – When resuming normal working at Chippenham & Thingley, it is important to select the through routes for up and down the main, then to set up the sympathetic routes on the panel, then turn the 'SIGNALS RED / NORMAL / THROUGH ROUTES' switch back to 'NORMAL'. Resuming normal working without the sympathetic routes set up and down the main at Chippenham & Thingley will cause the system to malfunction.

	===Wootton Bassett West===		===[[Wootton Bassett West]]===
	THROUGH routes provided for:		THROUGH routes provided for:
	* Up and down the Badminton.		* Up and down the Badminton.
Line 122:		Line 122:
	* Up movements Down Badminton Reversible to Up Badminton.		* Up movements Down Badminton Reversible to Up Badminton.

	===Hullavington===		===[[Hullavington]]===
	THROUGH routes provided for:		THROUGH routes provided for:
	* Up and down the Badminton.		* Up and down the Badminton.
Line 132:		Line 132:
	* No routes provided into or out of the loops.		* No routes provided into or out of the loops.

	===Kemble===		===[[Kemble]]===
	* There is no override at Kemble, instead TWO remote control links are provided: 'SYSTEM A' and 'SYSTEM B'. A 'REMOTE CONTROL RESET' button is provided on the panel to control the links. A siren will sound if either link fails, accompanies by a 'SEMI-URGENT ALARM' lamp flashing. The links should automatically change over if one fails. The alarm is silenced by pressing the 'REMOTE CONTROL RESET' button. If BOTH links fail, the siren will sound, an 'URGENT ALARM' lamp will flash, Kemble will go black, game over.		* There is no override at Kemble, instead TWO remote control links are provided: 'SYSTEM A' and 'SYSTEM B'. A 'REMOTE CONTROL RESET' button is provided on the panel to control the links. A siren will sound if either link fails, accompanies by a 'SEMI-URGENT ALARM' lamp flashing. The links should automatically change over if one fails. The alarm is silenced by pressing the 'REMOTE CONTROL RESET' button. If BOTH links fail, the siren will sound, an 'URGENT ALARM' lamp will flash, Kemble will go black, game over.
	* Note that as there is no UPS at Kemble, the failure of the power supply will cause a signalling blackout which will initially manifest itself as a complete failure of both links. If/when the power or generator comes on the signalling will come back to life and just the power indication will show up.		* Note that as there is no UPS at Kemble, the failure of the power supply will cause a signalling blackout which will initially manifest itself as a complete failure of both links. If/when the power or generator comes on the signalling will come back to life and just the power indication will show up.