Minarik NRGD-4Q Series, User Manual

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NRGD–4Q Drives
Minarik’s NRGD–4Q Series drives are four-quadrant, full-wave,
regenerative PWM drives. These open-chassis drives come with
the following features:
Low power consumption.
The NRGD series consume 30% less power than typical analog
PWM drives, and 50% less power than typical SCR drives.
Four-quadrant ACCEL/DECEL.
The ACCEL trimpot determines the time the motor takes to ramp
from a lower to a higher speed independent of direction. The
DECEL trimpot determines the time the motor takes to ramp
down from higher to lower speed independent of direction.
Pulse width modulation.
Lower form factor than SCR drives (1.10 versus 1.37) throughout
the motor speed range. Motor runs with greater efficiency and
less maintenance.
Four-quadrant regenerative operation.
See Regenerative drives section on the preceding pages.
Regenerative braking.
When used with an external dump circuit, the drive brakes along
user-adjusted deceleration profile. No contactors required and no
electromechanical components to overheat or wear out.
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