I.
INTRODUCTION
Thank you for purchasing the KBPW-240D. KB Electronics, Inc. is committed to providing
total customer satisfaction by producing quality products that are easy to install and operate.
The KBPW-240D is manufactured with surface mount components incorporating advanced
circuitry and technology.
The KBPW-240D is a Pulse Width Modulated (PWM) control in a NEMA-4X / IP-65 watertight
and washdown enclosure designed to operate PWM and SCR rated Permanent Magnet and
Shunt Wound motors ranging from 0.2 Amps DC to 7.5 Amps DC. It operates at a switching
frequency greater than 16kHz to provide high motor efficiency and quiet operation.
Special
circuitry automatically accepts AC line input voltages of 115 Volts AC to 208/230 Volts
AC (±10%, 50/60Hz) without having to make a jumper selection.
Standard panel mounted features include diagnostic LEDs (power on, stop, and overload),
Start/Stop switch, and speed potentiometer. Other features include barrier terminal blocks
(facilitate wiring of AC line, motor armature, motor field, tach-generator and run relay con-
nections), adjustable trimpots (acceleration, deceleration, maximum speed, minimum speed,
jog speed [used with optional Run/Jog switch], current limit, timed current limit and IR Comp.)
1
i. SAFETY WARNING! Please read carefully
This product should be installed and serviced by a qualified technician, electrician, or elec-
trical maintenance person familiar with its operation and the hazards involved. Proper instal-
lation, which includes wiring, mounting in proper enclosure, fusing or other overcurrent pro-
tection, and grounding can reduce the chance of electrical shocks, fires, or explosion in this
product or products used with this product, such as electric motors, switches, coils, solenoids,
and/or relays. Eye protection must be worn and insulated adjustment tools must be used
when working with control under power. This product is constructed of materials (plastics,
metals, carbon, silicon, etc.) which may be a potential hazard. Proper shielding, grounding,
and filtering of this product can reduce the emission of radio frequency interference (RFI)
which may adversely affect sensitive electronic equipment. If further information is required
on this product, contact the factory. It is the responsibility of the equipment manufacturer and
individual installer to supply this Safety Warning to the ultimate end user of this product. (SW
effective 11/1992.)
This control contains electronic Start/Stop circuits that can be used to start and stop the
control. However these circuits are never to be used as safety disconnects since they are not
fail-safe. Use only the AC line for this purpose.
Be sure to follow all instructions carefully. Fire and/or electrocution can result due to
improper use of this product.
!
PWM Safety Warning! This control contains a safety circuit which is designed to
prevent full speed runaway in the event the main power transistor fails. However,
this safety circuit is not infallible and may itself fail to operate and therefore allow a full
speed runaway condition to exist. The installer of this product should take proper pre-
cautions to include other means to protect the operator or the machine involved (such
as mechanical disconnects, warning notices, etc.).
!
This product complies with all CE directives pertinent at the time of manufacture.
Contact factory for detailed installation and Declaration of Conformity. Installation of
a CE approved RFI filter (KBRF-200A [P/N 9945C] or equivalent) is required. Additional
shielded motor cable and/or AC line cables may be required along with a signal isolator (KBSI-
240D [P/N 9431] or equivalent).