KB Electronics KBWS Data Sheet
KBWS
Pulse Width Modulated (PWM)
Whisper-Drive™ DC Motor Speed Controls
with Built-in Input Signal Isolation
For Permanent Magnet DC Motors Rated:
1/50 – 1/2 HP (SCR), 3/4 HP (PWM) @ 115 Volts AC
1/25 – 1 HP (SCR), 11⁄2 HP (PWM) @ 208/230 Volts AC
TYPICAL APPLICATIONS
• Medical Equipment • Packaging Equipment
• Web Processing • Winding Machinery
• Conveyors • Machine Tools
DATA SHEET D-435
*
Model KBWS-15 Shown
BENEFITS
• Replaces costly choke and capacitor filtering.
• Provides quieter and cooler operation.
• Extended brush life on SCR rated motors.
STANDARD FEATURES
• Plug-in Horsepower Resistor®: Automatically calibrates IR
Compensation and Current Limit (supplied separately).
• Diagnostic LEDs: Power On (PWR ON) and Current Limit (CL).
• Short Circuit Protection: Protects the control from a short circuit
at the motor.
• Isolated Signal Input Circuit: Eliminates the need for an external signal
isolator (accepts 0 - 5 Volts DC input).
• Protection Features: Undervoltage protection. MOV input transient
protection. AC line inrush current limit protection.
• Inhibit Circuit: Provides electronic coast-to-stop.
• Auto AC Line Select: Control automatically adjusts for 115 or 208/230
Volt AC line input (dual voltage models).
• Motor Voltage Selection: Allows motor voltage to be set to 90/130
or 180 Volts DC (dual voltage models).
TRIMPOT ADJUSTMENTS
• Maximum Speed (MAX) • Minimum Speed (MIN)
• Current Limit (CL) • Deceleration (DEC)
• Acceleration (ACC) • IR Compensation (IR)
DESCRIPTION
The KBWS PWM (pulse width modulated) controls are designed to operate
PWM and SCR rated Permanent Magnet motors ranging from 1/50 HP to 1
They operate at a switching frequency greater than 16 kHz to provide high
motor efficiency and quiet operation. Another advantage of PWM is higher
output voltage (up to 130 Volts DC for 115 Volt AC line and 220 Volts DC for
208/230 Volt AC line) which provides increased motor speed.
The KBWS contains pulse-by-pulse current sensing, which provides short
circuit protection and prevents control damage due to commutator arcing.
Permanent magnet motor demagnetization is completely eliminated because
current peaks are reduced to safe levels. The controls contain an AC line inrush
current limiter (ICL) which reduces the AC line surge current during startup.
Standard features of the KBWS include diagnostic LEDs (Power On and
Current Limit) and adjustable trimpots (Maximum Speed, Minimum Speed,
Acceleration, Deceleration, Current Limit, IR Compensation). Also provided is a
connector for an Inhibit Switch and quick-connect terminals for AC line, motor
armature and Main Speed Potentiometer. The Plug-In Horsepower Resistor®
matches the motor characteristics to the control which eliminates the need to
recalibrate the Current Limit (CL) IR Compensation (IR) trimpots.
The KBWS contains built-in isolation for all inputs. This includes signal
voltage, Main Speed Potentiometer, Inhibit Circuit, and +5VDC Power Supply.
The dual voltage models contain a jumper to select motor voltage and special
circuitry which automatically accepts AC line input voltages of 115 or 208/230
Volts AC without having to make a jumper selection.
Optional accessories for the KBWS include a DIN Rail Mounting Kit, a
Product Safety Module (PSM), and an AC Line / Armature Fuse Kit.
1
⁄2 HP.
OPTIONAL ACCESSORIES
• DIN Rail Mounting Kit (Part No. 9995): Allows mounting of the control
to a DIN Rail.
• Product Safety Module (PSM) (Part No. 8611): Protects the machine
operator from injury due to a runaway or uncontrolled acceleration
condition.
• AC Line / Armature Fuse Kit (Part No. 9849)
*Requires CE RFI filter KBRF-300 (KB P/N 9484) or equivalent.
KB Electronics, Inc.
PWM SAFETY WARNING! This control does not contain protection circuitry
to prevent full speed runaway in the event of main power transistor failure.
However, an optional Product Safety Module (PSM) (Part No. 9995) can be installed
to prevent full speed runaway. If a PSM is not used, the installer of this product
should take proper precautions to include other means, such as mechanical
disconnects, warning notices, etc., to protect the operator of the machine involved.
Application Note: This control is not recommended for applications where the AC line is
to be rapidly cycled on and off.
MOTOR
(OPEN TO RUN)
INHIBIT* SWITCH OR RELAY
AC LINE
KBWS
J1
180V
90V
A+A-
L1
L2
PWR ON
P2P3 P1
CL
CON1
(SUPPLIED SEPARATELY)
*FOR ENABLE (OPEN TO STOP,
CLOSE TO RUN), WIRE A CONTACT
IN SERIES WITH THE HIGH SIDE
(P3) OF THE MAIN SPEED
POTENTIOMETER
MAIN SPEED
RESISTOR®
HORSEPOWER
PLUG-IN
(FRONT VIEW)
POTENTIOMETER*
LOW (WHITE)
HIGH (VIOLET)
WIPER (ORANGE)
–
+
CLDECMIN ACC IR
MAX
TABLE 1 – GENERAL PERFORMANCE SPECIFICATIONS
KBWS
180V 90V
A+A-
L1
L2
CL
PWR ON
J1
P3 P2 P1
CON1
IRCLDECMIN ACC
2.98
[75.8]
1.23
[31.4]
0.48
[12.3]
4.30
[109.2]
3.62
[92.1]
3.80
[96.5]
8 PLACES
Ø0.19
[Ø4.83]
1.25
[31.8]
0.95
[24.1]
MAX
Maximum Height
2.19
[55.5]
KBWS-12
[50.5]
1.99
KBWS-15
[55.5]
2.19
KBWS-22D
3.17
[80.5]
KBWS-25D
DATA SHEET D-435
Description Specification Factory Setting
AC Line Voltage Regulation (% Base Speed) 0.5 —
Armature Voltage Range at 115 Volt AC Line Input (Volts DC) 0 – 130 90
Armature Voltage Range at 208/230 Volt AC Line Input (Volts DC) 0 – 130, 0 – 220 180
Maximum Load Capacity (% for 2 Minutes) 150 —
Switching Frequency at Motor (kHz) >16 —
Signal Following Input Voltage Range (Volts DC) 0 – 5 —
Maximum Speed Trimpot (MAX) Range (% Base Speed) 70 – 100 100
Minimum Speed Trimpot (MIN) Range (% Base Speed) 0 – 30 0
Acceleration Trimpot (ACC) Range (Seconds) 0.2 – 10 1
Deceleration Trimpot (DEC) Range (Seconds) 0.2 – 10 1
Current Limit Trimpot (CL) Range (% Full Load) 0 – 200 150
IR Compensation Trimpot (IR) Range at 90/130 Volts DC Output (Volts DC) 0 – 10 5
IR Compensation Trimpot (IR) Range at 180/220 Volts DC Output (Volts DC) 0 – 20 10
Speed Regulation (50:1 Speed Range) (% Base Speed) 1—
Speed Range (Ratio) 50:1 —
Operating Temperature Range (ºC / ºF) 0 – 40* / 32 – 104 —
Operating Humidity Range (% Relative, Non Condensing) 0 – 95 —
Storage Temperature Range (ºC / ºF) -25 – +85 / -13 – +185 —
* All models are rated at 40 ºC, maximum ambient temperature, at the Rated Load Current..
TABLE 2 – ELECTRICAL RATINGS
1
Model Part No.
2
KBWS-12
2
KBWS-15
AC Line Input Voltage (±10%,50/60Hz)
(Single Phase Volts AC)
9490 115 0 - 90, 130 4.0 2.5 1/4, (0.18) 1/3, (0.25)
9491 115 0 - 90, 130 8.0 5.0 1/2, (0.37) 3/4, (0.5)
Motor Voltage
(Volts DC)
115 0 - 90, 130 4.0 2.5 1/4, (0.18) 1/3, (0.25)
KBWS-22D 9492
208/230
0 - 180, 220 4.0 2.5 1/2, (0.37) 3/4, (0.5)
0 - 90, 130 4.0 2.5 1/4, (0.18) 1/3, (0.25)
115 0 - 90, 130 8.0 5.0 1/2, (0.37) 3/4, (0.5)
KBWS-25D 9493
208/230
Notes: 1. For ambient temperatures above 40 ºC, all drives are derated 2.5% per ºC. 2. Minimum Order, 100 Pieces.
0 - 180, 220 8.0 5.0 1, (0.75) 1
0 - 90, 130 8.0 5.0 1/2, (0.37) 3/4, (0.5)
Maximum AC Line Current
(Amps AC)
Maximum Load Current
(Amps DC)
Maximum Horsepower Rating HP, (kW)
SCR Rated Motors PWM Rated Motors
1
⁄2, (1)
Motor Current
TABLE 3 – PLUG-IN HORSEPOWER RESISTOR® SELECTION CHART
(Amps DC)
3.3 – 5.0 1/3, (0.25) – 1/2, (0.37) 3/4, (0.5) – 1, (0.75) 1/2, (0.37) – 3/4, (0.5) 1, (0.75) – 1
2.5 1/4, (0.18) 1/2, (0.37) 1/3, (0.25) 3/4, (0.5) 0.18 9837
1.3 – 2.0 1/8, (0.09) – 1/6, (0.1) 1/4, (0.18) – 1/3, (0.25) 1/6, (0.1) – 1/4, (0.18) 1/3, (0.25) – 1/2, (0.37) 0.25 9836
0.7 – 1.0 1/15, (0.05) – 1/10, (0.08) 1/6, (0.1) – 1/5, (0.15) 1/12, (0.06) – 1/8, (0.09) 1/6, (0.1) – 1/4, (0.18) 0.51 9834
0.4 – 0.6 1/30, (0.02) – 1/20, (0.04) 1/15, (0.05) – 1/10, (0.08) 1/20, (0.04) – 1/15, (0.05) 1/8, (0.09) – 1/6, (0.1) 1.0 9833
0.1 – 0.3 1/100, (0.007) – 1/50, (0.01) 1/50, (0.01) – 1/25, (0.03) 1/50, (0.01) – 1/30, (0.02) 1/25, (0.03) – 1/20, (0.04) 2.0 9949
FIGURE 1 – MECHANICAL SPECIFICATIONS (Inches/mm)
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 • info@kbelectronics.com
www.kbelectronics.com
SCR Rated Motor Horsepower Ranges [HP, (kW)] PWM Rated Motor Horsepower Ranges [HP, (kW)] Plug-in Horsepower Resistor®
90 Volt DC 180 Volt DC 130 Volt DC 200 Volt DC Ω Part No.
1
⁄2, (1) 0.1 9838
FIGURE 3 – CONTROL LAYOUT & CONNECTION DIAGRAM
COPYRIGHT © 2010 KB Electronics, Inc.
(A42105) – Rev. B – 04/2010
PC – 6K – 07/2010
Loading...