No official Railway Board PDF has been traced for this entry yet. The text below was read from the document held in the library.
| Type | Commercial Circular |
|---|---|
| Topic | freight |
When the train enters trip mode, the Loco Pilot shall select Post Trip mode in a standstill condition to move
Kavach Operation modes, Mode transition and responsibilities of LP & Differences between Kavach system Version 3.2 and 4.0 OPERATIONAL MODES IN Version 4.0 Standby (SB) Staff Responsible (SR) Limited Supervision (LS) Full Supervision (FS) Onsight (OS) Trip (TR) Post Trip (PT) Reverse (RV) Shunt (SH) Non-leading (NL) System Failure (SF) Isolation (IS) 1 2 3 4 5 6 7 12 11 10 9 8 Train Type Selection Passenger Train Selected • Once Train configuration completed, Loco pilot needs to select Staff Responsible Mode Or Shunt Mode by pressing SR or SHNT respectively followed by CNFM soft keys on DMI. • After selection type train and formation type system asks for reconfirm selected formation type • Then this mode can be changed to SR mode or Shunt Mode Standby Mode to SR/ Shunt Mode STANDBY MODE • The SB mode is default mode and cannot be selected by the Loco Pilot. • In this mode, train is supervised for standstill. If any movement is detected, it applies EB. • The loco pilot cannot move the train in this mode • At power on or if no cab is selected, Kavach unit comes into this mode and performs brake system health test if the cab is occupied. • On test success, it suggests SR or shunt mode. STAFF RESPONSIBLE MODE • This mode is can be selected only during Start of Mission. This mode allows LP to move train under his/her direct responsibility. • Supervises loco ceiling speed (Maximum permissible speed) of loco/train . • As non-guaranteed protection, it might provide some protection in case of head on/rear end collision situation. • As non-guaranteed protection, SOS generation and emergency stop with SOS reception. However, TIN , direction and absolute location information is mandatory. • The supervision of braking curve in SR mode doesn’t ensure that train will stop at the given distance. • LP to respect line side information (signals, speed boards) 7 ON SIGHT MODE: • The on sight mode allows the train to enter into a track that could be already occupied by another train. • In this mode, the loco Kavach unit shall supervise train movements against a dynamic speed profile. • Loco Kavach enters into on sight mode from SR when OS MA is received , Override Main stop signals, Override of LSS/IBS and Auto signals. • Loco exits from OS mode when it crosses passing signal at OFF Aspect. 8 FULL SUPERVISION MODE: • FS mode cannot be selected by LP but shall be entered automatically when all the necessary conditions of operation under KAVACH are fulfilled. • The loco Kavach unit shall supervise train movements against a dynamic speed profile. • Onboard Kavach enters in SR mode if, valid radio packets are not available in communication mandatory area and track profile not available (3000m), whichever is less, three consecutive tags are missed, exit tags are read & traffic direction is unknown. 9 LOCO PILOT OPERATION CUM INDICATION PANEL (OCIP)/ DRIVER MACHINE INTERFACE (DMI) LIMITED SUPERVISION MODE: • This mode cannot be selected by LP System automatically enters from FS to LS mode when Radio packets are not available from SKAVACH in Communication Mandatory Area and track profile is available upto 3000m.. • Supervises train movement against a dynamic speed profile. • Onboard Kavach transit from LS to SR in case track profile is not available upto 3000m (configurable) or when three consecutive tags are missed or Kavach territory exit tag is read or traffic direction is unknown. • It obeys general SOS from station if loco within 3000m, supervise roll away and reverse movement protection. 11 TRIP MODE: • When a loco Kavach in FS/OS mode and passes a stop signal at ON or end of authority, the loco Kavach unit shall enter into trip mode. • Loco applies EB continuously. • Loco pilot has to acknowledge by pressing P_Trip followed by CNFM, then it releases EB. 12 POST TRIP MODE: • The post trip mode shall be entered by pressing P_Trip button followed by CNFM button, then it releases EB. • In P_Trip, it is required to press OVRD button follo
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