KBWD PULSE WIDTH MODULATED (PWM) WHISPER-DRIVE DC Motor Speed Control
DATA SHEET D-261
KBWD
PULSE WIDTH MODULATED (PWM)
WHISPER-DRIVE
TM
DC Motor Speed Control
MODEL KBWD-13 (P/N 8609)
MODEL KBWD-16 (P/N 8607)
Specifically designed for 130 VDC PM PWM rated motors
requiring a 1.0 form factor.
Replaces costly choke and capacitor filtering.
Provides quieter and cooler operation and
extended brush life on SCR rated motors.
®
*
PENDING
STANDARD FEATURES
• Plug-in Horsepower Resistor®▲ automatically calibrates
IR Comp and Current Limit (CL)
• Short Circuit Protection
• Under Voltage Protection
• Inhibit Circuit
TRIMPOT ADJUSTMENTS
• Minimum Speed (MIN)
• Current Limit (CL)
• IR Compensation (IR)
• Maximum Speed (MAX)
RATINGS
Max.
Motor
Horsepower*
(Hp, [KW])
AC Line Input
Voltage
(VAC-50/60Hz)
DC
Output
Voltage
(VDC)
@100 VDC
@130 VDC
KBWD-13
115
0 - 130
3.5
3.0
1/3, (0.25)
KBWD-16
115
0 - 130
6.0
5.0
1/2, (0.35)
Model #
Max. DC Output
Current (ADC)
*Maximum Motor Horsepower is for 90VDC SCR Rated Motors and 130VDC
PWM Rated Motors.
PLUG-IN HORSEPOWER RESISTOR® CHART
Motor
Armature
Current
(Amps DC)
Plug-In
Horsepower
Resistor®
(ohms)
90 VDC
SCR Rated
Motor
Horsepower
3.3 - 6.0
.1
1/3 -1/2
DESCRIPTION
The KBWD Pulse Width Modulated (PWM) DC motor
speed control provides excellent dynamic response to load
variations. 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. The
PWM significantly lowers audible motor noise and provides
longer brush life. It also produces less motor heating which
allows 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 KBWD control is the Plug-in
Horsepower Resistor®. It eliminates the need for recalibrating
IR Comp and Current Limit when the control is used on
various horsepower motors. The control contains armature
feedback which provides excellent load regulation.
The control contains quick disconnect terminals as
standard. A potentiometer (5K), isolated analog signal
(0-5 VDC), or PWM microprocessor output can be used to
vary the output of the control.
130 VDC
PWM Rated
Motor
Horsepower
1/2
2.5
.18
1/4
1/3
1.3 - 2.0
.25
1/8 - 1/6
1/6 -1/4
.7 - 1.0
.51
1/15 - 1/10
1/12 - 1/8
.4 - .6
1.0
1/30 - 1/20
1/20 - 1/15
.1 - .3
2.0
1/50 - 1/100
1/30 - 1/50
▲
Notes
(1) For motor current not on chart use next lowest value Plug-in Horsepower
Resistor®.
(2) Disregard the Horsepower ranges marked on Plug-in Horsepower Resistor®
since they are not correct for PWM controls.
(3) Plug-in Horsepower Resistor® supplied separately.
SPECIFICATIONS
Output Voltage Range (VDC)...................................... 0 – 130
Speed Range (ratio) ........................................................ 50:1
Operating Frequency (K Hz) ............................................ >16
Form Factor (RMS/Avg Amps) ...................................... <1.05
Ambient Operating Range Temp.(°C) .......................... 0 – 45
Load Regulation (% base speed) ........................................ 1*
Acceleration Range (secs.) (Fixed .2, 2.5, 7, 10) .............. 2.5
Min Speed Trimpot Range (VDC) ................................ 0 – 40
Max Speed Trimpot Range (VDC) ............................ 80 – 130
CL Range (% Range Setting) .................................... 0 – 200
IR Comp Range (VDC) ................................................ 0 – 25
AC Line Voltage Regulation (% base speed) .................... 0.5
Analog Input Voltage (voltage following) (VDC) .............. 0 – 5
Speed Potentiometer – 1/4 Watt (ohms) ............................ 5K
* Based on motor having linear IR Comp characteristics.
* CE Compliance Requires KBRF-200A RFI Filter
TM
30
A Complete Line of Motor Drives
Rev.______(A_______)
MECHANICAL SPECIFICATIONS
Q4
Q5
INCHES
[mm]
D9
3.625
[92.1]
1.750
[44.4]
A57455
KBWD-13/16
2.500
[63.5]
0.640
[16.3]
0.190
[4.8]
4.300
[109.2]
MAXIMUM HEIGHT IS
2.510
[63.75]
DWG#: B4500-1-00763
CONNECTION DIAGRAM
Q4
Q5
D9
A+
F+
MOTOR
A-
L1
AC LINE
PLUG-IN
HORSEPOWER
RESISTOR
L2
F-
CL
MIN
MAX
IR
P2
P1
P3
MOTOR
3
2
1
DWG#: A4500-2-00713
© 1998 KB Electronics, Inc.
KB ELECTRONICS, INC.
12095 NW 39th Street, Coral Springs, FL 33065-2516
(954) 346-4900 • FAX (954) 346-3377
Outside Florida Call TOLL FREE (800) 221-6570
www.kbelectronics.com
Rev.______(A_______)
31
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