KB Electronics KBRG-212D (8819), SCR Regen Reversing Drive, 115/230 Vac Input, 0-130/180 Vac Output, thru 1 1/2 HP, Open Chassis

KBRG-212D (8819), SCR Regen Reversing Drive, 115/230 Vac Input, 0-130/180 Vac Output, thru 1 1/2 HP, Open Chassis

The KBRG-212D is a full-wave regenerative drive capable
of operating DC PM or Shunt motors in a bidirectional mode.
Its 4-quadrant operation provides forward and reverse torque
in both speed directions. This allows the control to maintain
constant speed with overhauling loads and provides rapid
instant reversing and controlled braking. Because of its excellent controllability and response time, the KBRG-212D can
replace servos in many applications. The control is
factory set for armature feedback, which provides up to 1%
load regulation over a motor base speed of 50:1. Tachometer
feedback is also provided for superior load regulation if
required. A simple jumper setting converts the KBRG-212D
to a torque control. In this mode, motor torque rather than
motor speed is controlled.
An important feature of the drive is the factory-calibrated,
built-in, selectable, motor current jumper. It eliminates the
need to recalibrate IR Comp and Current Limit for most
applications.
The control contains an Enable function which can be
used to start and stop the motor electronically via a contact
closure. Through a jumper selection, the motor can be set to
rapidly regenerate to a “stop” or to “coast to stop.”
KB’s exclusive Auto Inhibit® circuit provides safe, smooth
starting during rapid cycling of the AC line. The Overspeed
Protect Circuit prevents failure of the power bridge in extreme
overhauling conditions. Reliability of the KBRG-212D is further
enhanced with the use of a high speed current limit circuit
along with armature fusing and MOV transient protection.
LED’S, which can be used for diagnostics, are provided for
power on and motor overload. A rugged extruded aluminum
heatsink provides enhanced heat transfer which provides a
higher control rating while maintaining cooler running SCR’s.
Several accessories are available for the KBRG-212D,
which enhance its adaptability to many applications. They
include: Bipolar signal isolator, 4-quadrant accel/decel board,
PID compensator and multi speed module.
A 5K remote potentiometer and full operating instructions
are supplied.

Dimensions: 4.76" x 8.37" x 1.70"