i.
KBWM-120, 240 SIMPLIFIED OPERATING INSTRUCTIONS
A. Power Connection –
Wire AC line to ter-
minals L1 and L2. Be sure the model num-
ber corresponds to the correct input voltage.
B. Permanent Magnet (PM) Motor
Connection (Two-Wire Type)
– Wire
the motor armature leads to terminals
A(+) and A(-). Be sure the motor volt-
age corresponds to the control voltage rating and model number.
Note:
Although control is specifically designed for PM motors it can also be used for
shunt wound motors. (See Section IV D, page. 7.)
C. Ground –
Be sure to earth ground the control by attaching a ground wire to the green stud
located between the Bx knockouts.
D. Plug-in Horsepower Resistor®** –
The correct Plug-in Horsepower Resistor® must be
installed for optimum performance. (See Section II A, p. 5.)
E. Armature Fuse** –
The correct value armature fuse must be installed for maximum pro-
tection. (See Section II C, p. 5.)
F. Trimpot Settings –
All trimpots have been set according to Figure 1, page 3 and Section VI, page 8.
G. Jumper J2
is provided on Model KBWM-240 only and is factory set to “180V” position.
For step-down operation (208/230 Volts AC line input and 0-90 Volts DC output), set J2 to
the “90V” position. See Figure 3, on page 6.
**
This control will not operate without installing the proper size Plug-in Horsepower Resistor® and armature fuse
– supplied separately.
Model Number
AC Line Voltage
VAC 50/60 Hz
Armature
Voltage (VDC)
KBWM-120
KBWM-240
115
208/230
0 – 90
0 – 90*, 180
1
IMPORTANT
– You must read these simplified operating instructions before proceeding. These
instructions are to be used as a reference only and are not intended to replace the detailed
instructions provided herein. You must read the Safety Warning before proceeding.
MODEL NO. & VOLTAGE RATING
ii. SAFETY WARNING! Please read carefully
This product should be installed and serviced by a qualified technician, electrician, or electrical mainte-
nance person familiar with its operation and the hazards involved. Proper installation, which includes wiring,
mounting in proper enclosure, fusing or other over current protection, 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 (plas-
tics, 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 Sales
Department. 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 9/2000).
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.
!
*See “G” below.
Summary of Contents for VARI-DRIVE KBWM-120
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