KBRG-255 (8821), DC Drive Regen Reversing, 5 HP, 230 Vac Input
KBRG-255 (8821), DC Drive Regen Reversing, 5 HP, 230 Vac Input, 0-180 Vdc Output, Chassis
The KBRG-255 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-255 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. However, tachometer feedback is also
available if superior regulation is required. By resetting
mode jumper J7 to the “TRQ” position, the KBRG-255 can
be changed from a speed control to a torque control.
The drive contains a variety of “selectable” jumpers
and adjustment trimpots to allow custom tailoring for exact
requirements. For example: jumper J6, when placed in the
“TCL” position, provides adjustable timed current limit from
1 to 15 seconds. This feature will protect the motor and
control by shutting the drive down after the preset time has
elapsed.
The KBRG-255 can be operated with either a two (2)
or three (3) wire start/stop circuit, or can be started from
the AC line. A set of dedicated relay contacts are provided
which are activated via the start/stop circuit. They can be
used to turn on or off corresponding equipment or to
sound an alarm if the drive stops.
Another important feature is the array of the LED’s,
which indicate the mode of operation the drive is in, and
also serve as a diagnostic tool. In addition, 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-255 is further enhanced with
the use of a high speed current limit circuit. MOV transient
protection is also included. A 5K remote potentiometer
and full operating instructions are supplied
Dimensions: 7.70" x 12.00" x 3.40"
