9381 KB Electronics Vari-Drive SCR DC Motor Control, 230VAC NEMA 1, KBWM-240

Description

Armature Fuse and Horsepower Resistor are not included with this drive!
Description
The KBWM™ Vari-Drive™ adjustable speed SCR control for DC motors offers proven reliability in a rugged all-metal NEMA-1 enclosure. The Vari-Drives are equipped with the ultimate KBMM™ speed control module. They are specifically designed for fractional horsepower permanent magnet (PM) DC motors. Two models are offered. The KBWM-120 is designed for 115 VAC input and is rated 1/100 - 1/3Hp at 90 VDC. For motors rated 1/50 - 3/4 Hp at 180 VDC use Model KBWM-240.
KB’s exclusive Plug-in Horsepower Resistor®* automatically presets the drive’s IR Comp and CL circuits for safe operation on various motors. Although factory calibrated, internal trimpots for Min, Max, IR, CL, Accel and Decel can be used to fine-tune the KBWM™ for specific applications. Connections to the control are via a barrier terminal block. By changing the orientation of the front cover, the wiring can be brought in either from the bottom or the top of the control.
Motor failure due to demagnetization is eliminated by the patented ultra-fast Direct-Fed™ current limit circuit. The controls contain AC line and armature* fusing, which provide protection against catastrophic failure. Auto-Inhibit®, a KB exclusive, allows the drive to be turned on and off rapidly using the AC line without damage to the control and/or motor. The internal CL LED is a diagnostic indicator that lights when the motor is overloaded.
A conveniently located front panel lighted rocker switch controls AC line input power to the drive
Standard Features
Plug-in Horsepower Resistor® automatically calibrates IR Comp. and Current Limit (CL).
AC line and armature fusing.
Rugged all-metal NEMA 1 enclosure.
AC line ON/OFF switch with “power on” indicator lamp.
Patented KBMM™ speed control module prevents demagnetization of PM motors.
Specifications
Manufacturer
KB Electronics
Model Number
KBWM-240
Part Number
9381
Input Line Voltage
230 VAC 50/60Hz
Armature Voltage
0-180 VDC
Maximum AC Load Current
5.0 RMS Amps
Maximum DC Load Current
3.5 DC Amps
Maximum Power
3/4 HP
0.50 kW
UPC
024822093811
Speed Range (Ratio)
50:1
Load Regulation – Armature Feedback
(0 – Full Load, 50:1 Speed Range)
1 % Base Speed
Line Voltage Regulation
(at Full Load, ± 10% Line Variation)
1/2 % Base Speed
Control Linearity
(% Speed vs. Dial Rotation)
2
CL/Torque Range
0-200 % Full Load
Acceleration Time Range
(0 – Full Speed)
0.2-10 Seconds
Deceleration Time Range
(Full – 0 Speed)
0.2-10 Seconds
Min. Speed Trimpot Range
0-30 % Full Speed
Max. Speed Trimpot Range
50-120 % Full Speed
IR Compensation Trimpot Range
0-24 Volts
Max. Allowable Ambient Temperature at Full Rating
50°C/122°F
Plug-In Horsepower Resistor Chart
Motor Current
Resistance
Part No.
Motor HP (90VDC)
Motor HP (180VDC)
0.1 Amps
1.0 Ohms
9833
1/100 HP
1/50 HP
0.2 Amps
0.51 Ohms
9834
1/50 HP
1/25 HP
0.35 Amps
0.35 Ohms
9835
1/30, 1/25 HP
1/15 HP
0.5 Amps
0.25 Ohms
9836
1/20 HP
1/10 HP
0.8 Amps
0.18 Ohms
9837
1/15, 1/12 HP
1/6 HP
1.3 Amps
0.1 Ohms
9838
1/10, 1/8, 1/6 HP
1/4 HP
2.5 Amps
0.05 Ohms
9839
1/4 HP
1/2 HP
3.3 Amps
0.035 Ohms
9840
1/3 HP
3/4 HP
Armature Fuse Selection Chart
Motor HP (90VDC)
Motor HP (180VDC)
Motor Current
Fuse Rating
Part No.
1/100 HP
1/50 HP
0.1 Amps
0.2 AC Amps
1/50 HP
1/25 HP
0.2 Amps
0.3 AC Amps
1/30 HP
1/15 HP
0.3 Amps
0.5 AC Amps
9736
1/20 HP
1/10 HP
0.5 Amps
0.75 AC Amps
9737
1/15 HP
1/8 HP
0.7 Amps
1 AC Amps
9738
1/10 HP
1/5 HP
1.0 Amps
1.5 AC Amps
1/8 HP
1/4 HP
1.3 Amps
2 AC Amps
9740
1/6 HP
1/3 HP
1.7 Amps
3 AC Amps
1/4 HP
1/2 HP
2.5 Amps
4 AC Amps
9742
1/3 HP
3/4 HP
3.3 Amps
5 AC Amps
9743