DIESEL LOCO – Multiple Unit

05-01-2021

 DIESEL LOCO - Multiple Unit  When two or more locomotive are coupled mechanically, electrically and pneumatically with each other and controlled by a single loco pilot, it is called multiple unit. Procedure:  1. Check and engine start the locos individually before making multiple unit. 2. Adjust all the pressure related to break system. 3. Carry out vacuum test, orifice test and leak off test separately of each loco. 4. Couple the all locos with CBC and lock it with lock pin. 5. Couple electrical jumper cable between the locos. 6. Couple following pipes between the locos – Brake pipe Feed pipe Brake cylinder equalizing pipe MR. equalizing pipe

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ACT (RS) ABB Loco (English) (22. BANKING MODE )
January 10, 2021

Banking Mode When it is required to use loco as a banker i.e use of TE / BE without charging BP, at that time loco should be operate in banking mode. Procedure: 1) Trip the VCB and Set switch “ZBAN” “to position “ON” (Panel A). 2) Close coc 70 & 136 provided on Pn panel. 3) Set up the loco in the normal manner. 4)

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ACT (RS) ABB Loco (English) (19. FAILURE MODE OPERATION)
January 10, 2021

Failure Mode Operation  This mode allows the locomotive to operate even if the angle transmitter of the TE/BE throttle has failed. In this mode, driving and electrical braking are controlled by the auxiliary contacts on the TE/BE throttle. Driving in failure mode  Driving in failure mode becomes necessary if the difference between

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ACT (RS) ABB Loco (English) (17. DRIVING / BRAKING)
January 10, 2021

Driving 1.After creating MR pressure above 6.4 kg/cm2 and node information no. 570. 2.Move the reverser into desired position. 3.Release the parking brake if applied 4.Put A9 to ‘RUN’ position & ensure BP 5 kg/cm2 5.Check AFI is not deviating. 6.Set the TE/BE throttle to desire position. 7.Put SA9 handle to

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ACT (RS) ABB Loco (English) (18. OPERATION OF THROTTLE)
January 10, 2021

Operation Of Throttle TE/BE Throttle  The TE/BE throttle controls traction and the electric braking effort of the locomotive with angle transmitter and auxiliary contacts. The TE/BE throttle has the following three end positions:  For Traction  Position 1/3                                 33% tractive

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ACT (RS) ABB Loco (English) (16. OPERATION OF REVERSER)
January 10, 2021

Operation Of Reverser  Reverser has following 3 positions. Position ‘F’ = Forward Position ‘O’ = Neutral Position ‘R’ = Reverse Throttle and reverser are interlocked

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ACT (RS) ABB Loco (English) (15. OPERATION OF BL KEY)
January 10, 2021

Operation Of BL Key BL key is operated for following mode: 1. DRIVING MODE :- ( Off - D ) 2. SELF HOLD MODE .- ( D - Off ) 3. Switching OFF control electronics: ( D - Off - C - Off ) 4. COOLING MODE:-- ( D - Off - C - Off - C ) Driving Mode: This mode is used to drive the loco. To achieve this mode driver has to: 1) Insert BL key

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