KBWT-110 (8603) DC Drive Pulse Width Modulated (PWM), Chassis 0-260 VDC, 2.2 HP, Chassis

**This drive has been obsoleted, please contact us for replacement**

KBWT-110 (8603) DC Drive Pulse Width Modulated (PWM), Chassis 0-130 VDC, 1.2 HP, Chassis.

The KBWT Pulse Width Modulated (PWM) DC motor
speed controls provide excellent dynamic response to
load variation. The efficient PWM waveform produces an
almost pure DC current to the motor (form factor < 1.05),
which has several advantages over a conventional SCR
control. PWM significantly lowers audible motor noise
and provides longer brush life. It also produces less
motor heating allowing a smaller, less costly motor to be
used for most applications. Another advantage of PWM is
higher output voltage, which provides increased output
speed. In addition, pulse-by-pulse current sensing provides
short circuit protection and prevents control damage due
to shorted motors.
A unique feature of the KBWT Series is its active bridge,
which provides a substantial reduction in AC line surge
current each time the control is turned on. This allows the
control to be turned on or off rapidly without damage to
critical components. The KBWT also contains a built-in
safety circuit that will shut down the control if the main
power transistor short circuits. This prevents high-speed
runaway, a potential problem with competitors’ controls.
The KBWT utilizes heat-spreader construction. This
system provides an enhanced thermal path that eliminates
overtemperature cycles which cause premature failure of
the power transistors.
Other features of the KBWT are (I x t) motor burnout
protection, which will shut the control down if the motor
is overloaded for a predetermined time, and the
Potentiometer Safety Circuit™ (optional), which prevents
the control from starting when the AC line is applied unless
the speed potentiometer is reset to zero. Diagnostic LED’s
for “Power On” and “Overload (OL)” indication are also
provided. The control contains quick disconnect terminals
as standard. A potentiometer (5K), isolated analog input
signal (0-5 VDC), or PWM microprocessor output can be
used to vary the output of the control

Dimensions: KBWT-110: 6.80" x 7.00" x 2.4"