This drive offers full features in a cost-saving half-wave design.
The PRD powers industrial DC motors for starting, stopping, reversing,
accelerating or braking in either direction.
When a PRD regenerative control is signaled to brake the mechanical
load, it causes the motor to act as a generator. The braking energy
is sent back into the AC power lines, eliminating the need for
heat-producing dynamic braking resistors. Besides simplifying the
overall installation, the PRD also provides faster braking than
is possible with non-regenerative controls.
A PRD control is an ideal choice for: high-duty cycle indexing and reversing; controlling high inertia loads; also hoisting or
other applications requiring controlled hold-back torque.
The unique circuit design provides a 4 to 6 Hz velocity and torque
loop response in the PRD. There are no overshoots during acceleration,
deceleration or reversing.
The PRD interfaces easily with programmable controllers, or directly
with process instruments that provide an analog signal output