Technical data

CHAP-04.10 ELECTRICAL POWER DISTRIBUTION, DRIVES, CONTROL &
ILLUMINATION ELECTRICAL
Page 20 of 50
04.10.10. Control and Operational Requirement:
1. All the necessary controls, interlocks and annunciation as required
for smooth, efficient and safe operation of the plant will be provided.
2. Contractor will provide suitable PLC based automation system
including all hardwares and softwares to run the existing and new
material handling plant in an integrated manner.
a) PLC based Automation system of proposed Coal Handling Plant
Pkg-064, will be interfaced with Automation system of Coal
Transportation Plant being arranged by the EMPLOYER through a
separate package (Pkg-062) (as indicated in Automation
Configuration Drawing enclosed) so that coal transportation from
silos to coal tower can be operated in an integrated way from a
common despatcher / control room. The PLC based Level-1
automation system of CHP will be provided as mentioned in the
automation chapter.
b) PLC based Level-1 automation system will be provided as
mentioned in the automation chapter for running the new Coke
Sorting Plant from a new control room/ despatcher which is to be
provided by the Contractor.
c) PLC based Level-1 automation system will be provided as
mentioned in the automation chapter for running the Flux - Fuel
Preparation and Plant Return Fines Handling for SP III from a
existing Control room CR-1 as indicated in the automation
configuration diagram.
3. All HT drives will be provided with extensive monitoring facilities for
fault detection and alarm annunciation. Alarm annunciation will be
provided for over winding temperature, over bearing temperature,
overload etc.
4. Alarm annunciation system will cover all the equipment of the
electrical system.
5. Mode of control :
i) Plant will have four modes of control.
 Local de-interlock mode for control of individual drive motor
from local push button station (LCS).
 Local interlock mode for running the drive motor in sequence
interlock mode from LCS.
 REMOTE interlocked individual drive control from the HMI at
Dispatcher/ Control room.