Maintenece Handbook On Auto Signaling For Indian Railways
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CATECH/2000/S/AS/1.0
1
CHAPTER 1
AUTOMATIC SIGNALLING 1.1
INTRODUCTION
Automatic block working is a system of train working in which movement of the train is controlled by the automatic stop signal. These signals are operated automatically by the passage of trains in to through and out of the automatic signalling sections. 1.2
FEATURES
Automatic block system
The line shall be provided with continuous track circuiting or axle counters. Block section is divided into various smallsignalling sections. Each signalling section is governed by an Automatic stop signal. Each signalling section is further divided into berthing and overlap track circuit.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
1.3
2
ADVANTAGES
Line capacity increases.
Less dependence on human agencies.
Automatic stop signal can be passed at `ON' position as per General Rule 9.02 , after stopping one minute by day and two minutes by night.
1.4
Automatic stop signal
Automatic stop signals are multiple Aspect colour light signals.( 3Aspect/ 4 Aspect stop signals)
Aspect of Automatic stop signal are controlled by the movement of train. Letter ‘A’ in black on white circular disc
A
Fig no.1
Maintenance handbook on Automatic signalling
March.2001
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3
Numbering
of signals -Normally odd nos. for up direction and even nos. for down direction. Automatic
stop signal is provided with `A' marker.
Semi Automatic Stop Signal
Semi Automatic stop signal can work as a manual stop signal/ Automatic stop signal.
Semi Automatic signal is provided with illuminated ‘A’ sign.
Illuminated 'A' sign will lit when signal is working as Automatic stop signal.
Illuminated ‘A’ sign will not lit when signal is working as a manual stop signal.
Controlled by king lever/ knob/ switch.
White illuminated letter ‘A’ against black background
A
Fig. No.2
Cascading arrangement- When a colour light signal is showing a particular aspect and its lamp of that aspect fuses then signal becomes blank. To avoid this condition, cascading or cutting in arrangement in the lamp controlling circuit is provided in such a way that if a lamp fuses the signal can be restored to next restrictive aspect. Example. If green lamp fuses (when signal is displaying clear aspect), then the more restrictive yellow aspect can
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
4
be lit or if yellow lamp fuses (when signal is displaying caution aspect) then red aspect can be lit. Red lamp protection: It is provided to avoid the passing of train in no light condition of a signal. In this case the rear signal will show ON aspect, when signal ahead is showing no light.
1.5
LEVEL CROSSING GATE IN AUTOMATIC SIGNALLING SECTION : LEVEL CROSSING GATE: In Automatic signalling area, the signal controlling movement over LC gate are semi-automatic signals. Semi Automatic gate signal will be in "ON" position, when gate is open for road traffic. Level Crossing Gate signal (when no point in the route)
Yellow circular disc with ‘G’ letter in black and illuminated ‘A’ letter against black background are provided.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
5
Illuminated “A” sign of the SemiAutomatic gate signal will lit when the level crossing gate is closed against the road traffic and signal is working as an Automatic stop signal. Letter ‘G’ in black on yellow circular disc
white illuminated letter ‘A’ against black background
G
A A
Fig no. 3
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
6
Level Crossing Gate signal (when points are in the route) Illuminated ‘A’ and ‘AG’ sign are provided on gate signal..
1.6
Illuminated “A” sign will lit when level crossing is closed against road traffic and points in the route are correctly set and locked and signal is working as an Automatic stop signal. Illuminated ‘AG’ sign will lit when points in the route are correctly set and locked and LC gate is defective and signal is working as an Automatic stop signal.
A
A G
Fig no. 4
Lamps mostly used in colour light signal are tabulated below:
SR. REF. NO. TYPE 1 SL18 .2 2 SL 21 .3 3 SL33 .4 4 SL35 A .5
RATING VOLT/WATT 12V/24W 12V/33W 110V/25W 12V/24W
Maintenance handbook on Automatic signalling
PURPOSE 2 pole single filament for OFF aspect. 2 pole double filament for ON aspect. 2 pole single filament direction type route indicators. Triple pole double filament parallel for OFF aspect.
March.2001
CATECH/2000/S/AS/1.0
5 SL35 B .6
7
12V/33W
Triple pole double filament in parallel of same capacity for ON aspect.
CHAPTER 2
AUTOMATIC SIGNALLING CIRCUITS Automatic signalling circuits are mainly of two type i.e. Siemens and Q series type. 2.1 a)
SIEMENS TYPE Circuit with Mini Relay Groups ( Provided in Auto location )
S1 1T
S3 1AT
3T
S5 3AT
S7 5T
5AT
S9
7T
7AT
9T
Fig No.5 I. When the train is on 1 AT and signal S3 is showing green aspect. The relay status for signal S3 shall be as under: Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
Status
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHECPR S3 HECPR S3 HHR S3 TCR
Status
S1 Maintenance handbook on Automatic signalling
Relay S3 DR S3 BR 3 TPR 3 ATPR
S3
Status
S5 March.2001
9AT
CATECH/2000/S/AS/1.0
1T
8
1AT
3T 3AT 5T 5AT Fig No.6 II. The train passes signal S3 and occupies 3T (Train is occupying 1AT and 3T). Signal S3 will show red aspect. The relay status for signal S3 shall be as under: Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
Status
S1 1T
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR S3 TCR
S3 1AT
Status
Relay S3 DR S3 BR 3 TPR 3 ATPR
Status
S5 3T
3AT 5T Fig No.7
5AT
III. The train has cleared 1AT and occupied 3 T only. The relay status for signal S3 shall be same as previous condition II.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S1 1T
9
S3 1AT
3T
S5 3AT
5T 5AT Fig No.8
IV. The train occupies 3T and 3AT. The relay status for signal S3 shall be as under: Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
S1 1T
Status
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR S3 TCR
S3 1AT 3T
Status
Relay S3 DR S3 BR 3 TPR 3 ATPR
Status
S5
5T 5AT Fig No.9 V. The train has cleared 3T and occupied 3AT only. The relay status for signal S3 shall be as under : Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR
Status
3AT
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR
Maintenance handbook on Automatic signalling
Status
Relay S3 DR S3 BR 3 TPR 3 ATPR
Status
March.2001
CATECH/2000/S/AS/1.0
S3 DATPR
S3 TCR
Maintenance handbook on Automatic signalling
10
March.2001
CATECH/2000/S/AS/1.0
S1 1T
11
S3 1AT
S5
3T
3AT 5T Fig No.10
5AT
VI. The train passes signal S5 and occupies 5T (Train is on 3AT and 5T). Signal S5 will show red aspect. The relay status for signal S3 shall be same as previous condition V. S1
S3
1T 1AT
3T
3AT
S5 5T
5AT
Fig No.11 VII. The train has cleared 3AT and on 5T only. The relay status for signal S3 shall be as under : Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
Status
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR S3 TCR
Maintenance handbook on Automatic signalling
Status
Relay S3 DR S3 BR 3 TPR 3 ATPR
Status
March.2001
CATECH/2000/S/AS/1.0
S3 1AT 3T 3AT
12
S5 5T
S7 5AT
7T 7AT Fig No.12
S9 9T
VIII. The train occupies 5AT. (Train is on 5T and 5AT). The relay status for signal S3 shall be same as previous condition VII. S3
S5
S7
1AT 3T 3AT
5T
5AT 7T Fig No.13
S9 7AT
9T
Train has cleared 5T and occupies 5AT only. Signal S3 will display yellow aspect. The relay status for signal S3 shall be as under : IX.
Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
Status
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR S3 TCR
Maintenance handbook on Automatic signalling
Status
Relay S3 DR S3 BR 3 TPR 3 ATPR
Status
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CATECH/2000/S/AS/1.0
13
Fig No.14 X. The train passes signal S7 and occupies 7T (train is on 5AT and 7T). Signal S7 shows red aspect. The S3 S5 S7
1AT 3T 3AT 5T 5AT 7T 7AT 9T relay status for Signal S-3 shall be same as previous condition IX . S3 1AT 3T
S5 3AT
S7
5T
5AT
7T
S9 7AT
9T
Fig No.15 XI. The train has cleared 5AT and occupying 7T only. The relay status for signal S3 shall be same as previous condition IX . S3 1AT 3T
S5 3AT
S7
5T
5AT
7T
S9 7AT 9T
Fig No.16 XII. Train occupies 7AT (train is on 7T and 7AT). The relay status for Signal S-3 shall be same as of condition IX . Maintenance handbook on Automatic signalling
March.2001
S9
CATECH/2000/S/AS/1.0
S3
14
S5
1AT 3T
3AT
S7
5T
5AT
7T
S9 7AT
9T
Fig No.17 XIII. Train has cleared 7T and occupies 7AT only. Signal S3 will display Double Yellow aspect and signal S5 will display yellow aspect. The relay status for signal S3 shall be as under : Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
Status
S3 1AT 3T
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR S3 TCR
S5 3AT
5T
Status
Relay SDR SBR TPR ATPR
S7 5AT
7T
Status
S9 7AT
9T
Fig No.18 XIV The train passes signal S9. Signal S9 shows red aspect. (Train is on 7AT and 9T). The relay status for Signal S3 shall be same as previous condition XIII .
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S3 1AT 3T
S5
15
S7
3AT
5T
S9
5AT
7T
7AT
9T
Fig No.19 XV. Train has cleared 7AT and occupies 9T only. The relay status for signal
S-3 shall remain same as previous condition XIV. S3 1AT 3T
S5 3AT
S7 5T
5AT
7T
S9 7AT
9T 9AT
Fig No.20 XVI. Train occupies 9AT ( train is on 9T and 9AT). The relay status for Signal S-3 shall remain same as previous condition XV.
1AT 3T
S3
S5
3AT 5T
5AT
S7 7T
7AT
S9 9T
9AT
Fig No.21 XVII. Train has cleared 9T and occupies 9AT only. Signal S-3 will display Green aspect, signal S-5 will display double yellow aspect and signal S-7 will display yellow aspect. The relay status for signal S-3 shall be as under : Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
Status
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR S3 TCR
Maintenance handbook on Automatic signalling
16
Status
Relay S3 DR S3 BR 3 TPR 3 ATPR
Status
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CATECH/2000/S/AS/1.0
S1
17
S3
1T
1AT
3T
S5
3AT
S7
5T
5AT
S9
7T
7AT
9T 9AT
Fig No.22
Remarks
3 ATPR
3 TPR
S3 BR
S3 DR
S3 TCR
S3 HHR
S3 HECPR
S3 DHHECPR
S3 PR
S3 DECPR
S3 HHATPR
S3 DATPR
S3 TPSR
S3 HATPR
S3 DECR
S3 HHECR
S3 HECR
S3 RECR
Position of Train
RELAY STATUS FOR DIFFERENT TRAIN MOVEMENT IN AUTOMATIC SIGNALLING
1AT 1AT/ 3T 3T
↓ ↑
↓ ↓
↓ ↓
↑ ↓
↓ ↓
↑ ↓
↑ ↓
↓ ↓
↑ ↑
↑ ↓
↑ ↓
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↓
↑ ↑
S3-G S3-R
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↓
↑
↑
↓
↑
S3-R
3T/ 3AT 3AT
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↑
↓
↓
↓
↓
S3-R
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↓
↑
↓
↑
↓
S3-R
3AT/ 5T 5T
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↓
↑
↓
↑
↓
S3-R
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↑
↓
↑
↑
↑
S3-R
5T/ 5AT 5AT 5AT/ 7T 7T 7T/ 7AT 7AT 7AT/ 9T 9T 9T/ 9AT 9AT
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↑
↓
↑
↑
↑
S3-R
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
S3-Y S3-Y
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
S3-Y S3-Y
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
S3-YY S3-YY
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
S3-YY S3-YY
↓
↓
↓
↑
↓
↑
↑
↓
↑
↑
↑
↓
↓
↓
↑
↑
↑
↑
S3-G
Maintenance handbook on Automatic signalling
March.2001
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(b) Circuit with Main Signal Group S1 S3 S5 S7
1T
1AT
3T
3AT
5T
5AT
S9
7T
7AT
9T
9AT
Fig No.23 I. When the train is on 1 AT and signal S3 is showing green aspect. The relay status for signal S3 shall be as under: Relays S3 RE(Mn)CR S3 HECR S3 DECR S3 GYR S3 GLSR
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3
Status
S3 GR1
S3 HECPR
S1 1T
S3 1AT
3T
S5
3AT
5T
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
S7 5AT
7T
Status
S9
7AT
9T 9AT
Fig No.24 II. The train passes signal S3 and occupies 3T (Train is occupying 1AT and 3T). Signal S3 will show red aspect. The relay status for signal S3 shall be as under: Relays S3 RE(Mn)CR S3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
Maintenance handbook on Automatic signalling
Status
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
Status
March.2001
CATECH/2000/S/AS/1.0
S1 1T
19
S3 1AT
S5
3T
3AT
S7 5T
5AT
S9
7T
7AT
9T
9AT
Fig No.25 III. The train has cleared 1AT and occupied 3 T only. The relay status for signal S3 shall be as previous condition II. S1 1T
S3 1AT
3T
S5 3AT
5T
S7 5AT
S9
7T
7AT
9T
9AT
Fig No.26 IV. The train occupies 3T and 3AT. The relay status for signal S3 shall be as under: Relays S3 RE(Mn)CR S3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
S1 1T
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
S3 1AT
3T
Status
S5 3AT
5T
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
S7 5AT
7T
Status
S9 7AT
9T
9AT
Fig No.27 V. The train has cleared 3T and occupied 3AT only. The relay status for signal S3 shall be as under : Relays S3 RE(Mn)CR
Status
Relays S3 GPR1
Maintenance handbook on Automatic signalling
Status
Relays S3 GPR3
Status
March.2001
CATECH/2000/S/AS/1.0
S3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
S1 1T
20
S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
S3 1AT
3T
S3 GR4 S3 HHECPR 3 TPR 3 ATPR
S5 3AT
5T
S7
5AT
7T
S9 7AT
9T
9AT
Fig No.28 VI. The train passes signal S5 and occupies 5T (Train is on 3AT and 5T). Signal S5 will show red aspect. The relay status for signal S3 shall be as under : Relays S3 RE(Mn)CR S3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
S1 1T
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
S3 1AT
3T
Status
S5 3AT
5T
5AT
7T
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
Status
S7
S9 7AT
9T
9AT
Fig No.29 VII. The train has cleared 3AT and on 5T only. The relay status for signal S3 shall be as under : Relays S3 RE(Mn)CR S3 HECR S3 DECR
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR
Maintenance handbook on Automatic signalling
Status
Relays S3 GPR3 S3 GR4 S3 HHECPR
Status
March.2001
CATECH/2000/S/AS/1.0
S3 GYR S3 GLSR S3 GR1
S1 1T
21
S3 DECPR S3 GR3 S3 HECPR
S3 1AT
3T
3 TPR 3 ATPR
S5 3AT
5T
S7
5AT
7T
S9 7AT
9T
9AT
Fig No.30 VIII.
The train occupies 5AT. (Train is on 5T and 5AT). The relay status for signal S3 shall be as previous condition VII.
S1
S3
1T
1AT
S5
3T
3AT
5T
S7 5AT
S9
7T
7AT
9T
9AT
Fig No.31 IX. Train has cleared 5T and occupies 5AT only. Signal S3 will display Yellow aspect. The relay status for signal S3 shall be as under : Relays S3 RE(Mn)CR S3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
S1 1T
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
S3 1AT
3T
Status
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
S5 3AT
5T
5AT
S7 7T
Status
S9 7AT
9T
9AT
Fig No.32 Maintenance handbook on Automatic signalling
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22
X. The train passes signal S7 and occupies 7T (train is on 5AT and 7T). Signal S7 shows red aspect. The relay status for Signal S-3 shall be same as previous condition IX.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S1
23
S3
1T
S5
1AT
3T
3AT
5T
S7
5AT
7T
S9 7AT
9T
9AT
Fig No.33 XI. The train has cleared 5AT and occupies 7T only. The relay status for signal S3 shall remain same as previous condition X. S1 1T
S3 1AT
3T
S5 3AT
5T
S7
5AT
7T
S9 7AT
9T
9AT
Fig No.34 XII. Train occupies 7AT (train is on 7T and 7AT).The relay status for Signal S-3 shall remain same as previous condition XI. S1 S3 S5 S7 S9 1T
1AT
3T
3AT
5T
5AT
7T
7AT
9T
9AT
Fig No.35 XIII. Train has cleared 7T and occupies 7AT only. Signal S3 will display Double Yellow aspect. The relay status for signal S3 shall be as under : Relays S3 RE(Mn)CR S3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
Maintenance handbook on Automatic signalling
Status
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
Status
March.2001
CATECH/2000/S/AS/1.0
S1 1T
24
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig No.36 XIV. The train passes signal S9. Signal S9 shows red aspect. (Train is on 7AT and 9T). The relay status for Signal S3 shall remain same as previous condition XIII. S1 1T
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig No.37 XV. Train has cleared 7AT and occupies 9T only. The relay status for signal S-3 shall remain same as previous condition XIV. S1 1T
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig No.38 XVI. Train occupies 9AT ( train is on 9T and 9AT). The relay status for Signal S-3 shall remain same as previous condition XV.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
1 1T
25
S3 1AT
3T
S5 3AT
5T
S7
5AT
7T
S9 7AT
9T
9AT
Fig No.39 XVII. Train has cleared 9T and occupies 9AT only. Signal S-3 will display Green aspect. The relay status for signal S-3 shall be as under : Relays S3 RE(Mn)CR 3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
Maintenance handbook on Automatic signalling
Status
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
Status
March.2001
CATECH/2000/S/AS/1.0
S1
26
S3
1T
1AT
S5
3T
3AT
S7
5T
5AT
S9
7T
7AT
9T
9AT
S3GR3
S3HECPR
S3GPR3
S3HHECPR
3TPR
3ATPR
↓ ↓
↓ ↓
↑ ↓
↑ ↓
↑ ↓
↓ ↑
↑ ↓
↑ ↓
↓ ↓
↑ ↓
↓ ↓
↓ ↓
↑ ↓
↑ ↑
S3-G S3-R
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↓
↓
↓
↑
S3-R
3T/ 3AT 3AT
↑
↓
↓
↑
↓
↓
↓
↓
↑
↓
↓
↓
↓
↓
↓
↓
↓
S3-R
↑
↓
↓
↑
↓
↓
↓
↓
↑
↓
↓
↓
↓
↓
↓
↑
↓
S3-R
3AT/ 5T 5T
↑
↓
↓
↑
↑
↓
↓
↓
↑
↓
↓
↓
↓
↓
↓
↑
↓
S3-R
↑
↓
↓
↓
↑
↓
↓
↓
↑
↓
↓
↓
↓
↓
↓
↑
↑
S3-R
5T/ 5AT 5AT 5AT/ 7T 7T 7T/ 7AT 7AT 7AT/ 9T 9T 9T/ 9AT 9AT
↑
↓
↓
↓
↑
↓
↓
↓
↑
↓
↓
↓
↓
↓
↓
↑
↑
S3-R
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
S3-Y S3-Y
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
S3-Y S3-Y
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↑ ↑
S3-YY S3-YY
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↑ ↑
S3-YY S3-YY
↓
↓
↑
↓
↓
↑
↑
↑
↓
↑
↑
↓
↑
↓
↓
↑
↑
S3-G
S3 GLSR
S3 DECR
S3 RE(Mn)CR
Position of Train
Maintenance handbook on Automatic signalling
Remarks
S3DECPR
↑ ↓
S3GR4
S3RE(Mn)CPR
↓ ↓
S3GR2
S3GR1
↓ ↑
S3 GYR
1AT 1AT/ 3T 3T
S3 HECR
S3GPR1
Fig No.40 RELAY STATUS OF DIFFERENT TRAIN MOVEMENT IN AUTO. SIGNALLING
March.2001
CATECH/2000/S/AS/1.0
27
Symbols used in Siemens circuit ↑
Front contact of normally up Relay
↑
Back contact of normally up Relay
↓
Back contact of normally drop Relay
↓
Front contact of normally drop relay
Note –Typical Automatic signalling circuit using Siemens main signal group is shown in Annexure I and a typical signalling circuit using Q series relays is shown in Annexure II. Cascading / cutting in arrangementRelay
I. II. III. IV.
status
GR1 AND GR2 ↑ DECR↓ GR1↑, GR2↑, GR3↑, GR4↓ GR1↑, GR2↑, GR4↑, GR3↑ HECR↑, HHECR↑, DECR↓
Maintenance handbook on Automatic signalling
Aspect
Y G YY R
March.2001
CATECH/2000/S/AS/1.0
2.2
Q series type
S1
1T
28
S3
1AT
3T
S5
3AT
5T
S7
5AT
7T
S9
7AT
9T
9AT
Fig. No.41 I. Train is on 1 AT and signal no. S 3 is showing green aspect. The relay status for signal S3 will be as given below: Relay Status Relay Status 3 HR 3 ATR 3 DR 3 HECR 3 HHR 3 HHECR 3 DECR 3 RECR 3 TR S1 1T
S3 1AT
3T
S5 3AT
5T
S7 5AT
7T
S9 7AT
9T
9AT
Fig. No.42 II. Train has occupied 1 AT and 3T-signal S3 will show Red aspect and its relay status will be as given below: Relay 3 HR 3 DR 3 HHR 3 DECR 3 TR
Status
Relay 3 ATR 3 HECR 3 HHECR 3 RECR
Status
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0 S1
1T
S3
1AT
3T
29 S5
3AT
5T
S7
5AT
7T
S9
7AT
9T
9AT
Fig. No.43 III. Train has cleared 1AT and occupying 3T. Relay status for signal S3 will be same as above as previous condition II.. S1
S3
1T
1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.44 IV. Now train is on 3T and 3 AT. Relay status for signal S3 will be same as above except 3ATR↓ S1 1T
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.45 V. Train cleared 3T and occupying 3AT. The relay status for signal S-3 will be same only 3TR will pick up 3TR↑ S1 1T
S3 1AT
S5 3T
3AT
5T
S7 5AT
7T
S9 7AT
9T
9AT
Fig. No.46 VI. Now train is occupying 3AT and 5T, signal S5 will show red aspect. Relay status for signal S3 will be same as above as per previous condition V.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S1
S3
1T
1AT
3T
30
S5 3AT
5T
S7 5AT
7T
S9 7AT
9T
9AT
Fig. No.47 VII. Train cleared 3AT and occupying 5T only. Relay status for signal S3 will be same as above as previous condition VI except 3 ATR . S1 1T
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.48 VIII. Train is occupying 5T and 5AT. Relay status for signal S3 will be same as above as previous condition VII. S1 1T
IX.
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.49 Train cleared 5T and occupying 5AT only. Signal S3 will display yellow aspect. Relay status for signal S3 will be same as given below Relay 3 HR 3 DR 3 HHR 3 DECR 3 TR
Status
Relay 3 ATR 3 HECR 3 HHECR 3 RECR
Status
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S1 1T
31
S3 1AT
3T
S5 3AT
5T
S7 5AT
7T
S9 7AT
9T
9AT
Fig. No.50 X. S1 1T
Train is occupying 5AT and 7T. Signal S7 will show danger/red aspect. Relay status for signal S3 will be same as above. S3 S5 S7 S9 1AT
3T
3AT
5T
5AT
7T
7AT
9T
9AT
Fig. No.51 XI.
Train cleared 5AT and occupying 7 T. Relay status for signal S3 will be same as previous condition X.
S1 1T
S3 1AT
3T
S5 3AT
5T
S7 5AT
7T
S9 7AT
9T
9AT
Fig. No.52 XII.
Train is occupying 7T and 7AT. Relay status for signal S3 will be same as previous condition XI.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S1 1T
32
S3 1AT
3T
S5 3AT
5T
S7
5AT
7T
S9 7AT
9T
9AT
Fig. No.53 XIII.
Train cleared 7T and occupying 7 AT. Relay status for Signal S3 will be changed. Signal S-3 will display double yellow and S-5 will display yellow. ↑
3HHR S1 1T
3HHECR
S3 1AT
3T
↑
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.54 XIV.
Train is occupying 7AT and 9T. Signal S9 will display Red aspect and relay status for S3 will be previous condition XIII.
S1 1T
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.55 XV. Train cleared 7AT and occupying 9T only. Relay status for S3 will be previous condition XIV.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S1 1T
33
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.56 XVI. Train is occupying 9T and 9AT. Relay status for Signal S3 will be previous condition XV. 1 S3 S5 S7 S9 1T
1AT
3T
3AT
5T
5AT
7T
7AT
9T
9AT
Fig. No.57 XVII Train cleared 9T and occupying 9AT only. Signal S3 will display Green, Signal S5 will display double yellow, Signal S7 will display yellow and Signal S9 will display Red aspect. Status Relay 3 HR 3 DR 3 HHR 3 DECR 3 TR
↑ ↑ ↓ ↑ ↑
Maintenance handbook on Automatic signalling
Relay 3 ATR 3 HECR 3 HHECR 3 RECR
Status ↑ ↓ ↓ ↓
March.2001
CATECH/2000/S/AS/1.0
S1
34
S3
1T
1AT
3T
S5
3AT
S7
5T
5AT
S9
7T
7AT
9T
9AT
Fig. No.58 RELAY STATUS OF DIFFERENT TRAIN MOVEMENT Position of train
S3 HR
S3 DR
S3 HHR
3 TR
3 ATR
↓ ↓
S3 DE CR ↑ ↓
↑ ↑
S3 RE CR ↓ ↑
S3 HE CR ↓ ↓
S3 HH ECR ↓ ↓
ON 1 AT ON 1AT & 3T ON 3T ON 3T & 3AT ON 3 AT ON 3AT & 5T ON 5T
↑ ↓
↑ ↓
↑ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
ON 5T & 5AT ON 5AT
↓
↓
↓
↓
↑
5AT &7T ON 7T ON 7T & 7AT 7 AT ON 7AT & 9T ON 9T ON 9T & 9AT ON 9AT
↓ ↓
↑ ↓
↑ ↑
↓ ↓
↓ ↓
S 3 –G S 3- R AS 3 DECR DROPS S3 –R --DO--
↓ ↓
↑ ↑
↓ ↓
↑ ↑
↓ ↓
↓ ↓
---DO----DO--
↓
↓
↑
↑
↑
↓
↓
-----DO-----
↓
↓
↑
↑
↑
↓
↓
---- DO-----
↓
↓
↓
↑
↑
↓
↑
↓
S 3-Y
↑ ↑ ↑
↓ ↓ ↓
↓ ↓ ↓
↓ ↓ ↓
↑ ↑ ↑
↑ ↑ ↑
↓ ↓ ↓
↑ ↑ ↑
↓ ↓ ↓
-----DO---S 3 –Y ---DO--
↑ ↑
↓ ↓
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
S 3-YY, ---DO--
↑ ↑
↓ ↓
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
S 3 -YY, ----DO----
↑
↑
↓
↑
↑
↑
↓
↓
↓
S 3-G
Maintenance handbook on Automatic signalling
REMARK
March.2001
CATECH/2000/S/AS/1.0
35
CHAPTER 3
MAINTENANCE OF AUTOMATIC SIGNALLING 3.1
To carry out day to day maintenance in Automatic Signalling section, following maintenance handbook prepared by CAMTECH/Gwalior may be referred.
Name of handbook
Publication No.
Colour light signal
CAMTECH/S/CLS/1.0
Siemens point machine
CAMTECH/S/SPM/1.0
IRS point machine
CAMTECH/S/IRSPM/1.0
DC track circuit
CAMTECH/S/DCTC/1.0
Power Equipment
CAMTECH/S/PQ/1.0
Lead acid battery
CAMTECH/S/1-96
Electric lifting barrier
CAMTECH/S/ELB/1.0
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
3.2
DO’S and DON’TS
3.2.1
DO’s
36
As far as possible bulb must be replaced during morning period since mostly bulb fuse during first 5 hours.
Check due date of overhauling of track relay. if due, it should be replaced timely.
Apply glue epoxy on the rail and fish plate of joints to avoid shorting due to iron fillings and iron powder.
Check time delay circuit is working properly.
Always work carefully as train traffic is on higher side in automatic signalling territory.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
3.2.2
37
DON’TS
Forget to take the no load current of signal transformer.
Forget to close and lock the back cover after completion of work.
Discharged Battery excessively.
Add impure distilled water and acid in the batteries.
Bypass the regulating resistance of track circuit at any time.
Disturb the antilittering arrangement of track relay.
Forget to give disconnection memo to on duty ASM/CASM at for time of attending failure.
Adjust the track circuit beyond the limit of track circuit parameters.
Commence maintenance work of point without telecommunication with ASM/CASM.
Try to replace any part of the point machine or associated wiring without proper disconnection notice.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
1
Annexure II Q-series Aspect control circuit of a Automatic Stop Signal
3 DECR 3HR 3HHR
3 DR HHG
3 HHECR 3HR 3HHR
3 DR
DG 3 DECR
3 DR HG
3 DR 3 DECR
3 HECR
3 DR 3 DECR 3 DECR 3 HECR 3 HHECR
RG
3 HR 3 RECR
Maintenance handbook on 3 HR Automatic signalling 3 HHECR 3 HECR
3 DECR
March.2001
CATECH/2000/S/AS/1.0
2
3
Maintenance handbook on Automatic signalling
March.2001
1
CHAPTER 1
AUTOMATIC SIGNALLING 1.1
INTRODUCTION
Automatic block working is a system of train working in which movement of the train is controlled by the automatic stop signal. These signals are operated automatically by the passage of trains in to through and out of the automatic signalling sections. 1.2
FEATURES
Automatic block system
The line shall be provided with continuous track circuiting or axle counters. Block section is divided into various smallsignalling sections. Each signalling section is governed by an Automatic stop signal. Each signalling section is further divided into berthing and overlap track circuit.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
1.3
2
ADVANTAGES
Line capacity increases.
Less dependence on human agencies.
Automatic stop signal can be passed at `ON' position as per General Rule 9.02 , after stopping one minute by day and two minutes by night.
1.4
Automatic stop signal
Automatic stop signals are multiple Aspect colour light signals.( 3Aspect/ 4 Aspect stop signals)
Aspect of Automatic stop signal are controlled by the movement of train. Letter ‘A’ in black on white circular disc
A
Fig no.1
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
3
Numbering
of signals -Normally odd nos. for up direction and even nos. for down direction. Automatic
stop signal is provided with `A' marker.
Semi Automatic Stop Signal
Semi Automatic stop signal can work as a manual stop signal/ Automatic stop signal.
Semi Automatic signal is provided with illuminated ‘A’ sign.
Illuminated 'A' sign will lit when signal is working as Automatic stop signal.
Illuminated ‘A’ sign will not lit when signal is working as a manual stop signal.
Controlled by king lever/ knob/ switch.
White illuminated letter ‘A’ against black background
A
Fig. No.2
Cascading arrangement- When a colour light signal is showing a particular aspect and its lamp of that aspect fuses then signal becomes blank. To avoid this condition, cascading or cutting in arrangement in the lamp controlling circuit is provided in such a way that if a lamp fuses the signal can be restored to next restrictive aspect. Example. If green lamp fuses (when signal is displaying clear aspect), then the more restrictive yellow aspect can
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
4
be lit or if yellow lamp fuses (when signal is displaying caution aspect) then red aspect can be lit. Red lamp protection: It is provided to avoid the passing of train in no light condition of a signal. In this case the rear signal will show ON aspect, when signal ahead is showing no light.
1.5
LEVEL CROSSING GATE IN AUTOMATIC SIGNALLING SECTION : LEVEL CROSSING GATE: In Automatic signalling area, the signal controlling movement over LC gate are semi-automatic signals. Semi Automatic gate signal will be in "ON" position, when gate is open for road traffic. Level Crossing Gate signal (when no point in the route)
Yellow circular disc with ‘G’ letter in black and illuminated ‘A’ letter against black background are provided.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
5
Illuminated “A” sign of the SemiAutomatic gate signal will lit when the level crossing gate is closed against the road traffic and signal is working as an Automatic stop signal. Letter ‘G’ in black on yellow circular disc
white illuminated letter ‘A’ against black background
G
A A
Fig no. 3
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
6
Level Crossing Gate signal (when points are in the route) Illuminated ‘A’ and ‘AG’ sign are provided on gate signal..
1.6
Illuminated “A” sign will lit when level crossing is closed against road traffic and points in the route are correctly set and locked and signal is working as an Automatic stop signal. Illuminated ‘AG’ sign will lit when points in the route are correctly set and locked and LC gate is defective and signal is working as an Automatic stop signal.
A
A G
Fig no. 4
Lamps mostly used in colour light signal are tabulated below:
SR. REF. NO. TYPE 1 SL18 .2 2 SL 21 .3 3 SL33 .4 4 SL35 A .5
RATING VOLT/WATT 12V/24W 12V/33W 110V/25W 12V/24W
Maintenance handbook on Automatic signalling
PURPOSE 2 pole single filament for OFF aspect. 2 pole double filament for ON aspect. 2 pole single filament direction type route indicators. Triple pole double filament parallel for OFF aspect.
March.2001
CATECH/2000/S/AS/1.0
5 SL35 B .6
7
12V/33W
Triple pole double filament in parallel of same capacity for ON aspect.
CHAPTER 2
AUTOMATIC SIGNALLING CIRCUITS Automatic signalling circuits are mainly of two type i.e. Siemens and Q series type. 2.1 a)
SIEMENS TYPE Circuit with Mini Relay Groups ( Provided in Auto location )
S1 1T
S3 1AT
3T
S5 3AT
S7 5T
5AT
S9
7T
7AT
9T
Fig No.5 I. When the train is on 1 AT and signal S3 is showing green aspect. The relay status for signal S3 shall be as under: Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
Status
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHECPR S3 HECPR S3 HHR S3 TCR
Status
S1 Maintenance handbook on Automatic signalling
Relay S3 DR S3 BR 3 TPR 3 ATPR
S3
Status
S5 March.2001
9AT
CATECH/2000/S/AS/1.0
1T
8
1AT
3T 3AT 5T 5AT Fig No.6 II. The train passes signal S3 and occupies 3T (Train is occupying 1AT and 3T). Signal S3 will show red aspect. The relay status for signal S3 shall be as under: Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
Status
S1 1T
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR S3 TCR
S3 1AT
Status
Relay S3 DR S3 BR 3 TPR 3 ATPR
Status
S5 3T
3AT 5T Fig No.7
5AT
III. The train has cleared 1AT and occupied 3 T only. The relay status for signal S3 shall be same as previous condition II.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S1 1T
9
S3 1AT
3T
S5 3AT
5T 5AT Fig No.8
IV. The train occupies 3T and 3AT. The relay status for signal S3 shall be as under: Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
S1 1T
Status
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR S3 TCR
S3 1AT 3T
Status
Relay S3 DR S3 BR 3 TPR 3 ATPR
Status
S5
5T 5AT Fig No.9 V. The train has cleared 3T and occupied 3AT only. The relay status for signal S3 shall be as under : Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR
Status
3AT
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR
Maintenance handbook on Automatic signalling
Status
Relay S3 DR S3 BR 3 TPR 3 ATPR
Status
March.2001
CATECH/2000/S/AS/1.0
S3 DATPR
S3 TCR
Maintenance handbook on Automatic signalling
10
March.2001
CATECH/2000/S/AS/1.0
S1 1T
11
S3 1AT
S5
3T
3AT 5T Fig No.10
5AT
VI. The train passes signal S5 and occupies 5T (Train is on 3AT and 5T). Signal S5 will show red aspect. The relay status for signal S3 shall be same as previous condition V. S1
S3
1T 1AT
3T
3AT
S5 5T
5AT
Fig No.11 VII. The train has cleared 3AT and on 5T only. The relay status for signal S3 shall be as under : Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
Status
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR S3 TCR
Maintenance handbook on Automatic signalling
Status
Relay S3 DR S3 BR 3 TPR 3 ATPR
Status
March.2001
CATECH/2000/S/AS/1.0
S3 1AT 3T 3AT
12
S5 5T
S7 5AT
7T 7AT Fig No.12
S9 9T
VIII. The train occupies 5AT. (Train is on 5T and 5AT). The relay status for signal S3 shall be same as previous condition VII. S3
S5
S7
1AT 3T 3AT
5T
5AT 7T Fig No.13
S9 7AT
9T
Train has cleared 5T and occupies 5AT only. Signal S3 will display yellow aspect. The relay status for signal S3 shall be as under : IX.
Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
Status
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR S3 TCR
Maintenance handbook on Automatic signalling
Status
Relay S3 DR S3 BR 3 TPR 3 ATPR
Status
March.2001
CATECH/2000/S/AS/1.0
13
Fig No.14 X. The train passes signal S7 and occupies 7T (train is on 5AT and 7T). Signal S7 shows red aspect. The S3 S5 S7
1AT 3T 3AT 5T 5AT 7T 7AT 9T relay status for Signal S-3 shall be same as previous condition IX . S3 1AT 3T
S5 3AT
S7
5T
5AT
7T
S9 7AT
9T
Fig No.15 XI. The train has cleared 5AT and occupying 7T only. The relay status for signal S3 shall be same as previous condition IX . S3 1AT 3T
S5 3AT
S7
5T
5AT
7T
S9 7AT 9T
Fig No.16 XII. Train occupies 7AT (train is on 7T and 7AT). The relay status for Signal S-3 shall be same as of condition IX . Maintenance handbook on Automatic signalling
March.2001
S9
CATECH/2000/S/AS/1.0
S3
14
S5
1AT 3T
3AT
S7
5T
5AT
7T
S9 7AT
9T
Fig No.17 XIII. Train has cleared 7T and occupies 7AT only. Signal S3 will display Double Yellow aspect and signal S5 will display yellow aspect. The relay status for signal S3 shall be as under : Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
Status
S3 1AT 3T
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR S3 TCR
S5 3AT
5T
Status
Relay SDR SBR TPR ATPR
S7 5AT
7T
Status
S9 7AT
9T
Fig No.18 XIV The train passes signal S9. Signal S9 shows red aspect. (Train is on 7AT and 9T). The relay status for Signal S3 shall be same as previous condition XIII .
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S3 1AT 3T
S5
15
S7
3AT
5T
S9
5AT
7T
7AT
9T
Fig No.19 XV. Train has cleared 7AT and occupies 9T only. The relay status for signal
S-3 shall remain same as previous condition XIV. S3 1AT 3T
S5 3AT
S7 5T
5AT
7T
S9 7AT
9T 9AT
Fig No.20 XVI. Train occupies 9AT ( train is on 9T and 9AT). The relay status for Signal S-3 shall remain same as previous condition XV.
1AT 3T
S3
S5
3AT 5T
5AT
S7 7T
7AT
S9 9T
9AT
Fig No.21 XVII. Train has cleared 9T and occupies 9AT only. Signal S-3 will display Green aspect, signal S-5 will display double yellow aspect and signal S-7 will display yellow aspect. The relay status for signal S-3 shall be as under : Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
Relay S3 RECR S3 HECR S3 HHECR S3 DECR S3 HATPR S3 TPSR S3 DATPR
Status
Relay S3 HHATPR S3 PR S3 DECPR S3 DHHEPCR S3 HECPR S3 HHR S3 TCR
Maintenance handbook on Automatic signalling
16
Status
Relay S3 DR S3 BR 3 TPR 3 ATPR
Status
March.2001
CATECH/2000/S/AS/1.0
S1
17
S3
1T
1AT
3T
S5
3AT
S7
5T
5AT
S9
7T
7AT
9T 9AT
Fig No.22
Remarks
3 ATPR
3 TPR
S3 BR
S3 DR
S3 TCR
S3 HHR
S3 HECPR
S3 DHHECPR
S3 PR
S3 DECPR
S3 HHATPR
S3 DATPR
S3 TPSR
S3 HATPR
S3 DECR
S3 HHECR
S3 HECR
S3 RECR
Position of Train
RELAY STATUS FOR DIFFERENT TRAIN MOVEMENT IN AUTOMATIC SIGNALLING
1AT 1AT/ 3T 3T
↓ ↑
↓ ↓
↓ ↓
↑ ↓
↓ ↓
↑ ↓
↑ ↓
↓ ↓
↑ ↑
↑ ↓
↑ ↓
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↓
↑ ↑
S3-G S3-R
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↓
↑
↑
↓
↑
S3-R
3T/ 3AT 3AT
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↑
↓
↓
↓
↓
S3-R
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↓
↑
↓
↑
↓
S3-R
3AT/ 5T 5T
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↓
↑
↓
↑
↓
S3-R
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↑
↓
↑
↑
↑
S3-R
5T/ 5AT 5AT 5AT/ 7T 7T 7T/ 7AT 7AT 7AT/ 9T 9T 9T/ 9AT 9AT
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↑
↓
↑
↑
↑
S3-R
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
S3-Y S3-Y
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
S3-Y S3-Y
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
S3-YY S3-YY
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
S3-YY S3-YY
↓
↓
↓
↑
↓
↑
↑
↓
↑
↑
↑
↓
↓
↓
↑
↑
↑
↑
S3-G
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
18
(b) Circuit with Main Signal Group S1 S3 S5 S7
1T
1AT
3T
3AT
5T
5AT
S9
7T
7AT
9T
9AT
Fig No.23 I. When the train is on 1 AT and signal S3 is showing green aspect. The relay status for signal S3 shall be as under: Relays S3 RE(Mn)CR S3 HECR S3 DECR S3 GYR S3 GLSR
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3
Status
S3 GR1
S3 HECPR
S1 1T
S3 1AT
3T
S5
3AT
5T
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
S7 5AT
7T
Status
S9
7AT
9T 9AT
Fig No.24 II. The train passes signal S3 and occupies 3T (Train is occupying 1AT and 3T). Signal S3 will show red aspect. The relay status for signal S3 shall be as under: Relays S3 RE(Mn)CR S3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
Maintenance handbook on Automatic signalling
Status
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
Status
March.2001
CATECH/2000/S/AS/1.0
S1 1T
19
S3 1AT
S5
3T
3AT
S7 5T
5AT
S9
7T
7AT
9T
9AT
Fig No.25 III. The train has cleared 1AT and occupied 3 T only. The relay status for signal S3 shall be as previous condition II. S1 1T
S3 1AT
3T
S5 3AT
5T
S7 5AT
S9
7T
7AT
9T
9AT
Fig No.26 IV. The train occupies 3T and 3AT. The relay status for signal S3 shall be as under: Relays S3 RE(Mn)CR S3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
S1 1T
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
S3 1AT
3T
Status
S5 3AT
5T
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
S7 5AT
7T
Status
S9 7AT
9T
9AT
Fig No.27 V. The train has cleared 3T and occupied 3AT only. The relay status for signal S3 shall be as under : Relays S3 RE(Mn)CR
Status
Relays S3 GPR1
Maintenance handbook on Automatic signalling
Status
Relays S3 GPR3
Status
March.2001
CATECH/2000/S/AS/1.0
S3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
S1 1T
20
S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
S3 1AT
3T
S3 GR4 S3 HHECPR 3 TPR 3 ATPR
S5 3AT
5T
S7
5AT
7T
S9 7AT
9T
9AT
Fig No.28 VI. The train passes signal S5 and occupies 5T (Train is on 3AT and 5T). Signal S5 will show red aspect. The relay status for signal S3 shall be as under : Relays S3 RE(Mn)CR S3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
S1 1T
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
S3 1AT
3T
Status
S5 3AT
5T
5AT
7T
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
Status
S7
S9 7AT
9T
9AT
Fig No.29 VII. The train has cleared 3AT and on 5T only. The relay status for signal S3 shall be as under : Relays S3 RE(Mn)CR S3 HECR S3 DECR
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR
Maintenance handbook on Automatic signalling
Status
Relays S3 GPR3 S3 GR4 S3 HHECPR
Status
March.2001
CATECH/2000/S/AS/1.0
S3 GYR S3 GLSR S3 GR1
S1 1T
21
S3 DECPR S3 GR3 S3 HECPR
S3 1AT
3T
3 TPR 3 ATPR
S5 3AT
5T
S7
5AT
7T
S9 7AT
9T
9AT
Fig No.30 VIII.
The train occupies 5AT. (Train is on 5T and 5AT). The relay status for signal S3 shall be as previous condition VII.
S1
S3
1T
1AT
S5
3T
3AT
5T
S7 5AT
S9
7T
7AT
9T
9AT
Fig No.31 IX. Train has cleared 5T and occupies 5AT only. Signal S3 will display Yellow aspect. The relay status for signal S3 shall be as under : Relays S3 RE(Mn)CR S3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
S1 1T
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
S3 1AT
3T
Status
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
S5 3AT
5T
5AT
S7 7T
Status
S9 7AT
9T
9AT
Fig No.32 Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
22
X. The train passes signal S7 and occupies 7T (train is on 5AT and 7T). Signal S7 shows red aspect. The relay status for Signal S-3 shall be same as previous condition IX.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S1
23
S3
1T
S5
1AT
3T
3AT
5T
S7
5AT
7T
S9 7AT
9T
9AT
Fig No.33 XI. The train has cleared 5AT and occupies 7T only. The relay status for signal S3 shall remain same as previous condition X. S1 1T
S3 1AT
3T
S5 3AT
5T
S7
5AT
7T
S9 7AT
9T
9AT
Fig No.34 XII. Train occupies 7AT (train is on 7T and 7AT).The relay status for Signal S-3 shall remain same as previous condition XI. S1 S3 S5 S7 S9 1T
1AT
3T
3AT
5T
5AT
7T
7AT
9T
9AT
Fig No.35 XIII. Train has cleared 7T and occupies 7AT only. Signal S3 will display Double Yellow aspect. The relay status for signal S3 shall be as under : Relays S3 RE(Mn)CR S3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
Maintenance handbook on Automatic signalling
Status
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
Status
March.2001
CATECH/2000/S/AS/1.0
S1 1T
24
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig No.36 XIV. The train passes signal S9. Signal S9 shows red aspect. (Train is on 7AT and 9T). The relay status for Signal S3 shall remain same as previous condition XIII. S1 1T
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig No.37 XV. Train has cleared 7AT and occupies 9T only. The relay status for signal S-3 shall remain same as previous condition XIV. S1 1T
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig No.38 XVI. Train occupies 9AT ( train is on 9T and 9AT). The relay status for Signal S-3 shall remain same as previous condition XV.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
1 1T
25
S3 1AT
3T
S5 3AT
5T
S7
5AT
7T
S9 7AT
9T
9AT
Fig No.39 XVII. Train has cleared 9T and occupies 9AT only. Signal S-3 will display Green aspect. The relay status for signal S-3 shall be as under : Relays S3 RE(Mn)CR 3 HECR S3 DECR S3 GYR S3 GLSR S3 GR1
Status
Relays S3 GPR1 S3 GR2 S3 RE(Mn)CPR S3 DECPR S3 GR3 S3 HECPR
Maintenance handbook on Automatic signalling
Status
Relays S3 GPR3 S3 GR4 S3 HHECPR 3 TPR 3 ATPR
Status
March.2001
CATECH/2000/S/AS/1.0
S1
26
S3
1T
1AT
S5
3T
3AT
S7
5T
5AT
S9
7T
7AT
9T
9AT
S3GR3
S3HECPR
S3GPR3
S3HHECPR
3TPR
3ATPR
↓ ↓
↓ ↓
↑ ↓
↑ ↓
↑ ↓
↓ ↑
↑ ↓
↑ ↓
↓ ↓
↑ ↓
↓ ↓
↓ ↓
↑ ↓
↑ ↑
S3-G S3-R
↑
↓
↓
↓
↓
↓
↓
↓
↑
↓
↓
↓
↓
↓
↓
↓
↑
S3-R
3T/ 3AT 3AT
↑
↓
↓
↑
↓
↓
↓
↓
↑
↓
↓
↓
↓
↓
↓
↓
↓
S3-R
↑
↓
↓
↑
↓
↓
↓
↓
↑
↓
↓
↓
↓
↓
↓
↑
↓
S3-R
3AT/ 5T 5T
↑
↓
↓
↑
↑
↓
↓
↓
↑
↓
↓
↓
↓
↓
↓
↑
↓
S3-R
↑
↓
↓
↓
↑
↓
↓
↓
↑
↓
↓
↓
↓
↓
↓
↑
↑
S3-R
5T/ 5AT 5AT 5AT/ 7T 7T 7T/ 7AT 7AT 7AT/ 9T 9T 9T/ 9AT 9AT
↑
↓
↓
↓
↑
↓
↓
↓
↑
↓
↓
↓
↓
↓
↓
↑
↑
S3-R
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
S3-Y S3-Y
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
S3-Y S3-Y
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↑ ↑
S3-YY S3-YY
↓ ↓
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↓ ↓
↓ ↓
↓ ↓
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↑ ↑
↑ ↑
S3-YY S3-YY
↓
↓
↑
↓
↓
↑
↑
↑
↓
↑
↑
↓
↑
↓
↓
↑
↑
S3-G
S3 GLSR
S3 DECR
S3 RE(Mn)CR
Position of Train
Maintenance handbook on Automatic signalling
Remarks
S3DECPR
↑ ↓
S3GR4
S3RE(Mn)CPR
↓ ↓
S3GR2
S3GR1
↓ ↑
S3 GYR
1AT 1AT/ 3T 3T
S3 HECR
S3GPR1
Fig No.40 RELAY STATUS OF DIFFERENT TRAIN MOVEMENT IN AUTO. SIGNALLING
March.2001
CATECH/2000/S/AS/1.0
27
Symbols used in Siemens circuit ↑
Front contact of normally up Relay
↑
Back contact of normally up Relay
↓
Back contact of normally drop Relay
↓
Front contact of normally drop relay
Note –Typical Automatic signalling circuit using Siemens main signal group is shown in Annexure I and a typical signalling circuit using Q series relays is shown in Annexure II. Cascading / cutting in arrangementRelay
I. II. III. IV.
status
GR1 AND GR2 ↑ DECR↓ GR1↑, GR2↑, GR3↑, GR4↓ GR1↑, GR2↑, GR4↑, GR3↑ HECR↑, HHECR↑, DECR↓
Maintenance handbook on Automatic signalling
Aspect
Y G YY R
March.2001
CATECH/2000/S/AS/1.0
2.2
Q series type
S1
1T
28
S3
1AT
3T
S5
3AT
5T
S7
5AT
7T
S9
7AT
9T
9AT
Fig. No.41 I. Train is on 1 AT and signal no. S 3 is showing green aspect. The relay status for signal S3 will be as given below: Relay Status Relay Status 3 HR 3 ATR 3 DR 3 HECR 3 HHR 3 HHECR 3 DECR 3 RECR 3 TR S1 1T
S3 1AT
3T
S5 3AT
5T
S7 5AT
7T
S9 7AT
9T
9AT
Fig. No.42 II. Train has occupied 1 AT and 3T-signal S3 will show Red aspect and its relay status will be as given below: Relay 3 HR 3 DR 3 HHR 3 DECR 3 TR
Status
Relay 3 ATR 3 HECR 3 HHECR 3 RECR
Status
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0 S1
1T
S3
1AT
3T
29 S5
3AT
5T
S7
5AT
7T
S9
7AT
9T
9AT
Fig. No.43 III. Train has cleared 1AT and occupying 3T. Relay status for signal S3 will be same as above as previous condition II.. S1
S3
1T
1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.44 IV. Now train is on 3T and 3 AT. Relay status for signal S3 will be same as above except 3ATR↓ S1 1T
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.45 V. Train cleared 3T and occupying 3AT. The relay status for signal S-3 will be same only 3TR will pick up 3TR↑ S1 1T
S3 1AT
S5 3T
3AT
5T
S7 5AT
7T
S9 7AT
9T
9AT
Fig. No.46 VI. Now train is occupying 3AT and 5T, signal S5 will show red aspect. Relay status for signal S3 will be same as above as per previous condition V.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S1
S3
1T
1AT
3T
30
S5 3AT
5T
S7 5AT
7T
S9 7AT
9T
9AT
Fig. No.47 VII. Train cleared 3AT and occupying 5T only. Relay status for signal S3 will be same as above as previous condition VI except 3 ATR . S1 1T
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.48 VIII. Train is occupying 5T and 5AT. Relay status for signal S3 will be same as above as previous condition VII. S1 1T
IX.
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.49 Train cleared 5T and occupying 5AT only. Signal S3 will display yellow aspect. Relay status for signal S3 will be same as given below Relay 3 HR 3 DR 3 HHR 3 DECR 3 TR
Status
Relay 3 ATR 3 HECR 3 HHECR 3 RECR
Status
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S1 1T
31
S3 1AT
3T
S5 3AT
5T
S7 5AT
7T
S9 7AT
9T
9AT
Fig. No.50 X. S1 1T
Train is occupying 5AT and 7T. Signal S7 will show danger/red aspect. Relay status for signal S3 will be same as above. S3 S5 S7 S9 1AT
3T
3AT
5T
5AT
7T
7AT
9T
9AT
Fig. No.51 XI.
Train cleared 5AT and occupying 7 T. Relay status for signal S3 will be same as previous condition X.
S1 1T
S3 1AT
3T
S5 3AT
5T
S7 5AT
7T
S9 7AT
9T
9AT
Fig. No.52 XII.
Train is occupying 7T and 7AT. Relay status for signal S3 will be same as previous condition XI.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S1 1T
32
S3 1AT
3T
S5 3AT
5T
S7
5AT
7T
S9 7AT
9T
9AT
Fig. No.53 XIII.
Train cleared 7T and occupying 7 AT. Relay status for Signal S3 will be changed. Signal S-3 will display double yellow and S-5 will display yellow. ↑
3HHR S1 1T
3HHECR
S3 1AT
3T
↑
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.54 XIV.
Train is occupying 7AT and 9T. Signal S9 will display Red aspect and relay status for S3 will be previous condition XIII.
S1 1T
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.55 XV. Train cleared 7AT and occupying 9T only. Relay status for S3 will be previous condition XIV.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
S1 1T
33
S3 1AT
3T
S5 3AT
5T
5AT
S7 7T
S9 7AT
9T
9AT
Fig. No.56 XVI. Train is occupying 9T and 9AT. Relay status for Signal S3 will be previous condition XV. 1 S3 S5 S7 S9 1T
1AT
3T
3AT
5T
5AT
7T
7AT
9T
9AT
Fig. No.57 XVII Train cleared 9T and occupying 9AT only. Signal S3 will display Green, Signal S5 will display double yellow, Signal S7 will display yellow and Signal S9 will display Red aspect. Status Relay 3 HR 3 DR 3 HHR 3 DECR 3 TR
↑ ↑ ↓ ↑ ↑
Maintenance handbook on Automatic signalling
Relay 3 ATR 3 HECR 3 HHECR 3 RECR
Status ↑ ↓ ↓ ↓
March.2001
CATECH/2000/S/AS/1.0
S1
34
S3
1T
1AT
3T
S5
3AT
S7
5T
5AT
S9
7T
7AT
9T
9AT
Fig. No.58 RELAY STATUS OF DIFFERENT TRAIN MOVEMENT Position of train
S3 HR
S3 DR
S3 HHR
3 TR
3 ATR
↓ ↓
S3 DE CR ↑ ↓
↑ ↑
S3 RE CR ↓ ↑
S3 HE CR ↓ ↓
S3 HH ECR ↓ ↓
ON 1 AT ON 1AT & 3T ON 3T ON 3T & 3AT ON 3 AT ON 3AT & 5T ON 5T
↑ ↓
↑ ↓
↑ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
↓ ↓
ON 5T & 5AT ON 5AT
↓
↓
↓
↓
↑
5AT &7T ON 7T ON 7T & 7AT 7 AT ON 7AT & 9T ON 9T ON 9T & 9AT ON 9AT
↓ ↓
↑ ↓
↑ ↑
↓ ↓
↓ ↓
S 3 –G S 3- R AS 3 DECR DROPS S3 –R --DO--
↓ ↓
↑ ↑
↓ ↓
↑ ↑
↓ ↓
↓ ↓
---DO----DO--
↓
↓
↑
↑
↑
↓
↓
-----DO-----
↓
↓
↑
↑
↑
↓
↓
---- DO-----
↓
↓
↓
↑
↑
↓
↑
↓
S 3-Y
↑ ↑ ↑
↓ ↓ ↓
↓ ↓ ↓
↓ ↓ ↓
↑ ↑ ↑
↑ ↑ ↑
↓ ↓ ↓
↑ ↑ ↑
↓ ↓ ↓
-----DO---S 3 –Y ---DO--
↑ ↑
↓ ↓
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
S 3-YY, ---DO--
↑ ↑
↓ ↓
↑ ↑
↓ ↓
↑ ↑
↑ ↑
↓ ↓
↑ ↑
↑ ↑
S 3 -YY, ----DO----
↑
↑
↓
↑
↑
↑
↓
↓
↓
S 3-G
Maintenance handbook on Automatic signalling
REMARK
March.2001
CATECH/2000/S/AS/1.0
35
CHAPTER 3
MAINTENANCE OF AUTOMATIC SIGNALLING 3.1
To carry out day to day maintenance in Automatic Signalling section, following maintenance handbook prepared by CAMTECH/Gwalior may be referred.
Name of handbook
Publication No.
Colour light signal
CAMTECH/S/CLS/1.0
Siemens point machine
CAMTECH/S/SPM/1.0
IRS point machine
CAMTECH/S/IRSPM/1.0
DC track circuit
CAMTECH/S/DCTC/1.0
Power Equipment
CAMTECH/S/PQ/1.0
Lead acid battery
CAMTECH/S/1-96
Electric lifting barrier
CAMTECH/S/ELB/1.0
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
3.2
DO’S and DON’TS
3.2.1
DO’s
36
As far as possible bulb must be replaced during morning period since mostly bulb fuse during first 5 hours.
Check due date of overhauling of track relay. if due, it should be replaced timely.
Apply glue epoxy on the rail and fish plate of joints to avoid shorting due to iron fillings and iron powder.
Check time delay circuit is working properly.
Always work carefully as train traffic is on higher side in automatic signalling territory.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
3.2.2
37
DON’TS
Forget to take the no load current of signal transformer.
Forget to close and lock the back cover after completion of work.
Discharged Battery excessively.
Add impure distilled water and acid in the batteries.
Bypass the regulating resistance of track circuit at any time.
Disturb the antilittering arrangement of track relay.
Forget to give disconnection memo to on duty ASM/CASM at for time of attending failure.
Adjust the track circuit beyond the limit of track circuit parameters.
Commence maintenance work of point without telecommunication with ASM/CASM.
Try to replace any part of the point machine or associated wiring without proper disconnection notice.
Maintenance handbook on Automatic signalling
March.2001
CATECH/2000/S/AS/1.0
1
Annexure II Q-series Aspect control circuit of a Automatic Stop Signal
3 DECR 3HR 3HHR
3 DR HHG
3 HHECR 3HR 3HHR
3 DR
DG 3 DECR
3 DR HG
3 DR 3 DECR
3 HECR
3 DR 3 DECR 3 DECR 3 HECR 3 HHECR
RG
3 HR 3 RECR
Maintenance handbook on 3 HR Automatic signalling 3 HHECR 3 HECR
3 DECR
March.2001
CATECH/2000/S/AS/1.0
2
3
Maintenance handbook on Automatic signalling
March.2001
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