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 47 of 63
voltage
9.2 Reference signals The drive should be capable of the following
speed reference signals • Digital MOP • Jog • HIM
(Program/Control panel) • Analog Input signals •
Preset Speeds • Communication module
commands All reference signals may have a trim
signal applied to them for finer resolution and
accuracy. Trim source and amount should be
programmable.
9.3 Loss of reference The drive should be capable of sensing the
reference loss conditions . In the event of loss of
an analog input reference signal, the drive should
be user programmable to the following • Fault the
drive • Alarm and maintain last reference • Alarm
and go to preset speed • Alarm and go to
minimum speed • Alarm and go to maximum
speed • Alarm and maintain last output frequency
Signal loss detection should be available
regardless of the function of the analog input.
10.0 Output
10.1 Output voltage From 0 to rated motor voltage .
10.2 Output frequency 0.5 -400 Hz.
10.3 Output Waveform Sinusoidal
10.4 Output frequency
resolution
0.01 Hz.
11.0 Reflected wave Maximum of 3.15 times the bus voltage or 1600V,
whichever is less, up to cable lengths of 200
metres.
12.0 Starting torque 150 % / 0.3 Hz. (without PG) 150 % / 0 RPM
(with PG)
13.0 Torque accuracy + / -5 % .
14.0 Speed control
accuracy
+ / -0.02 % . IR compensation to be provided for
drive without PG .
15.0 Ramp rate -Linear acceleration and deceleration adjustable
independently from 0 to 3600 seconds . -Provision
of remotely selectable Accel / Decel settings
should be accessible through digital inputs also.
16.0 Main power
components in
incoming AC side
-ACB / MCCB with 50 KA rating -Matching input
isolation transformer / line reactor for harmonic
and noise suppression . For input isolation
transformer , the K factor shall be 4.0 or less. -AC
line surge suppression network . -Input contactor
.
17.0 Converter –
Inverter Equipment
-Diode / Thyristor bridge for AC/DC. -DC link
circuit with reactor/capacitor -IGBT bridge for
Inverter for DC/AC. -Harmonic transformer . -
Main PLC to take care of interlocking and
sequencing etc. -Mimic panel (where drive is HT)