Specifications

Enquiry Specification for Wagon Tippler with Side Arm Charger and Associated works
NRO/CON/WT/533
EPI – New Delhi Volume-2B, Rev.0 Page 50 of 63
30.0 Regulation &
control facilities
-Reference speed setter -Ramp generator -Speed
feed back -Current feed back -Flying start -
Trigger module -Pulse transformers -Logic control
module -Sequence module -PID control -Zero
speed / over speed monitor as applicable -
Momentary power loss restart . -Auto tuning . -
Current limiter -Skip Frequency -Counter current /
regenerative braking unit as applicable -Active
electronic components used shall be of industrial
grade hermetically sealed . -Output signals for
fault alarm , frequency arrival , running signal .
32.0 Remote control
facilities
-Shall have transducer to monitor the outputs like
motor speed at remote place / HMI . -Facility to
accept speed reference from HMI / engineering
station.
33.0 Auto / Manual
Mode
-The HIM should utilize the ALT function key to
transfer the drive from Automatic mode to Manual
mode and back. -When in Auto mode, the drive to
receive its frequency command from the
programmed source. -When in Manual mode,
control of the frequency command to be
transferred to the HIM speed control keys (or
potentiometer). -The user should have the choice
of preloading the HIM with the current “auto”
frequency reference before transferring control to
allow for smooth transitions without speed
“jumps”.
34.0 Communication
Bus
RS485 (ModBus, ProfiBus-DP, DeviceNet) bus
Internally mounted interfaces shall be provided to
connect to different buses .
35.0 Test points Two electronic test point parameters should be
available to examine data within the drive
memory that is not available through other
parameters.
36.0 Operator panel Shall be mounted on the front door of the unit . IP
66 protection class . -All adjustments to be made
with the door closed. -Status and Power LEDs
viewable through the cover -Status LEDs for
communications status, including embedded DPI
status, adapter health and communications
network status, viewable through the cover .
37.0 Membrane keypad -The keypad shall be logically designed for two
operating areas with required number of keys. -
Local operator control like -local start /stop , -jog
forward / reverse . -Programming . Facility to run
the drive without HIM shall be provided .