GE Industrial Solutions ASTAT-IBP Plus - Manual (Page 5)

1-1. Applications
There are numerous applications where soft starting and limited
current peaks are needed for the starting of squirrel cage induction
motors. Traditionally, reduced voltage starting was accomplished
using electromechanical starters, such as star delta starters,
autotransformer starters, stator resistance starters or by using
part-winding motors. These methods would provide a two-, three-
or four-step torque change by switching the motor voltage from
reduced value to full voltage (in steps) after a preset time interval.
ASTAT-IBP Plus Solid State Reduced-Voltage Starters (also known
as soft starters) use solid state devices to gradually increase the
voltage from an initial preset level (initial torque) to full voltage over
a selected time period. The same solid state devices may also be
used to reduce the voltage for the deceleration of the motor should
this be required in the application. This starting and stopping
method provides smooth, stepless acceleration and deceleration
of AC squirrel-cage induction motors. The ASTAT-IBP Plus control
circuitry offers many additional functions, such as the monitoring,
protection and secondary functions listed.
Integral Bypass
The ASTAT-IBP Plus provides acceleration and deceleration control
using back-to-back SCRs. When the motor reaches the end of the
ramp, a bypass contactor is energized and the SCRs are switched
off. This allows the ASTAT-IBP Plus to run cooler than conventional
soft starters.
Versatile Use
ASTAT-IBP Plus Solid State Reduced-Voltage Starters offer
customer-configurable functions, including pedestal voltage, kick
start (selectable), acceleration ramp, starting current limit, and soft
stop (selectable). Typical applications include the following:
• Belted Equipment • Centrifugal Fans
• Centrifuges • Compressors
• Conveyors • Crushers
• Extruders • Fans and Blowers
• Mixers • Packaging Equipment
• Pumps • Textile Machinery
Advanced Features
The ASTAT-IBP Plus incorporates many additional advanced
features to ensure suitability for most applications.
Monitoring
• Motor Current
• Line Voltage (1)
• Line Power Factor
• Elapsed Time
• Fault History
Protection
• Password
• Lockout
• Undervoltage (1)
• Overvoltage (1)
• Undercurrent
• Overcurrent
• Long Start Time
• Stalled Rotor
Secondary Functions
• Secondary Ramp Up
• Secondary Ramp Down
• Tachometer Feedback
• Dual Motor Switch
The ASTAT-IBP Plus also features two programmable inputs, two
programmable output relays and serial communications control.
1. Overview
1-1
Note: (1) Monitors L1