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Commercialpedia Indian Railways commercial circulars and policies

Onboard Kavach system working on and

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TypeCommercial Circular
Topicfreight

Summary

The Loco Pilot shall switch the Loco Kavach to Isolation Mode.

Text of the circular

Onboard Kavach system working on and 
switch off booting up procedures, DMI 
messages 
& indications and train configuration
&
Procedure for SOS generation & Reception in 
loco Kavach

30 Kmph
Home Signal
Loop Line 
Starter
46.87kM
932m
1071m
1912m
Kavach Illustration scenario

Loco Pilot Interface: Driver 
Machine Interface

Target Current
Pointer Speed Permitted Speed

Movement
Red due to ं Speed न Authority
Braking ) .
Target
Distance

Permitted
Speed Curve

Target
Distance

10-Jun-2014 Move Authority
14 18:45

Kavach Braking Curves: WAP5+10LHB+2PC at RDE Down Home

160 | —=15:03:2024-WAP5-10LHB+2PC(UL) .
| == 16:03:2024-WAP5-10LHB+2PC(L) ही
140 X 1332

© 120} Te है

E न

~ 100 > "8G 7

ot *s,

00 60F *t., 7
40 - \ -
20 7

0 | | | | कै
2000 1500 1000 500 0

Distance/Absolute Location in (m)

Switch ON Procedure
SN
Procedure
1.
Switch On the Kavach Power MCB. Ensure Leading/Non-Leading switch on LP-OCIP of both CABs 
incase of Locomotives in Leading Position.
2.
Keep Kavach Isolation switch in “Normal” position.
3.
Operate the Pneumatic Cocks.
•IRAB: Keep MR and EM cocks in Open Position.
•E-70: Keep EM Cocks of Both CABs in Open Position. Further IRU Bypass Switch of Active CAB IRU in 
Normal Position.
•CCB 2.0: Keep EM Cock in CAB1 in Open Position.
•EMU Conventional: Keep MR Cock OFF and EM Cock in Open Position.
•Three Phase EMU: Keep EM Cock in Open Position.
•VandeBharat: Keep EM Cock in Open Position. 
4.
Loco Pilot needs to Activate the LP Desk with BL Key or Reverser Key and Kavach performs Brakes 
Functional Test. If Successful prompts for selecting Train Configuration.
5.
If Brake Functional Test Fails, LP can re-test or Isolate the Kavach System 
6.
Until LP selects SR/SH mode, Onboard Kavach will be in Standby(SB) mode.
7

Switch OFF Procedure
SN
Procedure
1.
Keep Kavach Isolation switch in “Isolate” position.
2.
Operate the Pneumatic Cocks.
•IRAB: Keep MR and EM cocks in Close Position.
•E-70: Keep EM Cocks of Both CABs in Close Position. Further IRU Bypass Switch of Active CAB IRU in 
Bypass Position.
•CCB 2.0: Keep EM Cock in CAB1 in Close Position.
•EMU Conventional: Keep MR Cock Open and EM Cock in Close Positions.
•Three Phase EMU: Keep EM Cock in Close Position.
•VandeBharat: Keep EM Cock in Close Position. 
3.
Switch OFF power MCB.
8

Start of Mission: Standby Mode -
Brakes Testing
•
After selection of Desk or CAB, 
–
TCAS will perform brake test to 
ensure brakes (BIU) functionality

Brakes Testing Success
•
Brakes testing Success

Start of Mission: Standby Mode -
Entering Train Configuration 
•
Train Type Selection & reconfirmation
to
be
done
using
Up/
Dn
arrows
followed by Enter (soft keys) on DMI.

Train Type Selection (Ver 3.2)
Press Configure button using Up/Down
arrows followed by Enter in DMI

Train Type Selection (Ver 3.2) 
Light Engine is selected, with types

Train Type Selection(Ver 3.2) 
Reconfirming the selection

Train Type Selection(Ver 3.2) 
Goods/Freight is selected

Train Type Selection(Ver 3.2) 
Goods/Freight Train Type 
selected

Train Type Selection(Ver 3.2) 
Reconfirming the selection

Train Type Selection(Ver 3.2) 
Passenger
Train is selected

Train Type Selection(Ver 3.2) 
Passenger Train is selected, with types

Train Type Selection(Ver 3.2) 
Reconfirming the selection

Train Type Selection (Ver 4.0)
using Up/Down arrows followed by Enter 
in DMI

Train Type Selection (Ver 4.0)
Using Up/Down arrows followed by Enter 
in DMI

Train Type Selection (Ver 4.0)
using Up/Down arrows followed 
by Enter in DMI

Train Type Selection (Ver 4.0)
using Up/Down arrows followed 
by Enter in DMI

Train Type Selection (Ver 4.0)
25

Train Type Selection (Ver 4.0)
26

Train Type Selection (Ver 4.0)
27

Train Type Selection (Ver 4.0)
28

Train Type Selection (Ver 4.0)
29

Train Type Selection (Ver 4.0)
30

Train Type Selection (Ver 4.0)
31

Train Type Selection (Ver 4.0)
32

•
Once Train configuration completed, Loco pilot needs to select Staff Responsible
Mode Or Shunt Mode
by pressing SR or SHNT r

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