Rockwell Automation 284 ArmorStart User Manual - Manual (Page 14)

1-2 Product Overview
Operation The ArmorStart Distributed Motor Controllers can operate three-
phase squirrel-cage induction motors as follows:
Bulletin 280/281: 0.24…16 A; 200V AC, 230V AC, 460V AC, 575V
AC; 50/60 Hz.
Bulletin 283: 1.1…16 A; 200V AC, 230V AC, 460V AC, or 575V
AC; 50/60 Hz.
Bulletin 284: up to 2.0 Hp (1.5 kW) @ 240V AC, up to 5 Hp (3.0 kW)
@ 480V AC, and up to 5 Hp (4.0 kW) @ 575V AC; 50/60 Hz.
Depending on the catalog number ordered, the ArmorStart
Distributed Motor Controller will accept a control power input of
120V AC, 240V AC or 24V DC.
Mode of Operation Bulletin 280/281
Full-Voltage Start
This method is used in applications requiring across-the-line starting,
in which full inrush current and locked-rotor torque are realized. The
ArmorStart Bulletin 280 offers full-voltage starting and the Bulletin
281 offers full-voltage starting for reversing applications.
Bulletin 283
Soft Start
This method has the most general application. The motor is raised
from an initial torque value to full voltage. The initial torque is
adjustable to 15%, 25%, 35%, or 65% of locked rotor torque. The
motor voltage is gradually increased during the acceleration ramp
time, which can be adjusted from 1 to 45 seconds.
100%
Percent
Voltage
Time (seconds)