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 11/2 HP. 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 re-calibrate 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 and an AC Line / Armature Fuse Kit.
Typical Applications
- Medical Equipment
- Packaging Equipment
- Web processing
- Winding Machinery
- Conveyors
- Machine Tools
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).
Benefits
- Replaces costly choke and capacitor filtering.
- Provides quieter and cooler operation.
- Extended brush life on SCR rated motors.
Trimpot Adjustments
Maximum Speed (MAX)
Current Limit (CL)
Acceleration (ACC)
Minimum Speed (MIN)
Deceleration (DEC)
IR Compensation (IR)
General Performance Specifications
| 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) | Greater than 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 | 0 to 40°C
32 to 104°F |
- |
| Operating Humidity Range (% Relative, Non Condensing) | 0 - 95 | - |
| Storage Temperature Range | -25 to +85°C
-13 to +185°F |
Electrical Ratings
| Manufacturer | KB Electronics |
|---|---|
| Model | KBWS-22D |
| Part Number | 9492 |
| AC Line Input Voltage | 115VAC 50/60Hz Single Phase
208-230VAC 50/60Hz Single Phase |
| Motor Voltage | 0-90, 130VDC @ 115/208-230VAC Input
0-180, 220VDC @ 208-230VAC Input |
| Maximum AC Line Current | 4.0 Amps |
| Maximum Load Current | 2.5 Amps |
| Maximum Rating (SCR Rated) | 1/4HP (0.18kW) with 90VDC Motor
1/2HP (0.37kW) with 180VDC Motor |
| Maximum Rating (PWM Rated) | 1/3HP (0.25kW) with 90VDC Motor
3/4HP (0.5kW) with 180VDC Motor |
| UPC | 024822094924 |
Typical Applications
| Motor Current | SCR Rated Horsepower
90VDC |
SCR Rated Horsepower
180VDC |
PWM Rated Horsepower
130VDC |
PWM Rated Horsepower
200VDC |
Resistance | Plug-In Horsepower Resistor |
|---|---|---|---|---|---|---|
| 3.3 – 5.0 Amps | 0.33 – 0.50 HP
0.25 – 0.37 kW |
0.75 – 1.00 HP
0.50 – 0.75 kW |
0.50 – 0.75 HP
0.37 – 0.50 kW |
1.00 – 1.50 HP
0.75 – 1.00 kW |
0.1 Ohms | 9838 |
| 2.5 Amps | 0.25 HP
0.18 kW |
0.50 HP
0.37 kW |
0.33 HP
0.25 kW |
0.75 HP
0.50 kW |
0.18 Ohms | 9837 |
| 1.3 – 2.0 Amps | 1/8 – 1/6 HP
0.09 – 0.10 kW |
1/4 – 1/3 HP
0.18 – 0.25 kW |
1/6 – 1/4 HP
0.10 – 0.18 kW |
1/3 – 1/2 HP
0.25 – 0.37 kW |
0.25 Ohms | 9836 |
| 0.7 – 1.0 Amps | 1/15 – 1/10 HP
0.05 – 0.08 kW |
1/6 – 1/5 HP
0.10 – 0.15 kW |
1/12 – 1/8 HP
0.06 – 0.09 kW |
1/6 – 1/4 HP
0.10 – 0.18 kW |
0.51 Ohms | 9834 |
| 0.4 – 0.6 Amps | 1/30 – 1/20 HP
0.02 – 0.04 kW |
1/15 – 1/10 HP
0.05 – 0.08 kW |
1/20 – 1/15 HP
0.04 – 0.05 kW |
1/8 – 1/6 HP
0.09 kW – 0.10 kW |
1.0 Ohms | 9833 |
| 0.1 – 0.3 Amps | 1/100 – 1/50 HP
0.007 – 0.01 kW |
1/50 – 1/25 HP
0.01 – 0.03 kW |
1/50 – 1/30 HP
0.01 – 0.02 kW |
1/25 – 1/20 HP
0.03 – 0.04 kW |
2.0 Ohms | 9949 |
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