SmartFan Nimbus AC motor speed control is designed to control AC motors, pumps, and fans in HVAC, electronics, and industrial control applications. Nimbus provides AC motor speed control for single-phase AC motors approved for voltage control in applications including; humidity control, clean room pressurization, equipment cooling, exhaust ventilators, duct fans & blowers. Nimbus accepts 115 or 230 VAC power sources and provides AC motor speed control from a control signal (0-20 mA, 0-10 VDC), remote transducer, or up to three remote temperature sensors.
Automatic voltage and frequency detection, current ratings up to 7.5 Amps and three mounting and connection configurations make this AC motor speed control extremely flexible and economical. Benefits of using SmartFan Nimbus for AC motor speed control include acoustical noise reduction, environmental (humidity, temperature, or pressure) regulation, greater product reliability, improved safety, and energy savings.
- On-board DIP switch programming
- Single Phase TRIAC technology
- Controller Control Signal options: 2-10 VDC, 4-20mA, Thermistor, Transducer
- 50 Piece Pricing as low as $36.70 each
- Factory Customization for Orders as Low as 50 Pieces
NOTE: This product is not recommended for new designs – See Nimbus II
CAUTION – SmartFan Nimbus is designed for OEMs (Original Equipment Manufacturers) and is not intended for end-user or after-market applications. The Nimbus should only be used with compatible induction motors (Permanent Split Capacitor (PSC) or Shaded Pole) that are approved by the motor manufacturer for TRIAC (voltage) control. Attempting to control a fan or motor that is not compatible could cause excessive heating and/or permanent damage to the motor.
Control Comparison & Motor Efficiency – See the technical article on how the Nimbus AC motor speed control compares to other controller technologies.
Specifications
- Power source: 95 – 250 VAC, automatically detected.
- Frequency: 47-64 Hz, automatically detected.
- AC Motor Type Compatibility (automatically detected)
- Voltage-controllable PSC (Permanent Split Capacitor)
- Shaded Pole
- Current ratings: 2.5A to 7.5A (at 40°C still air)
- AC Motor Speed Control based on:
- 4-20 mA control signal
- 2-10 VDC control signal
- Up to three remote temperature sensors (supplied separately)
- Remote transducer (humidity, pressure, flow, etc.)
- Full voltage start pulse
- RoHS 6/6 compliant
- UL recognized to UL508, CSA-C22.2, File E100344
Features / Selectable Options
- Mounting options:
- PCB mount
- DIN Rail mount
- 4×4 electrical job box mount
- Connections:
- Terminal block
- 18 AWG wires (job box only)
- Dip switch allows user-selectable settings of:
- 4 control (full speed) temperature settings
- 2 slope (difference between full and idle) settings
- 4 idle speeds
- Motor on/off threshold
- 10 pressure settings
- 64 fixed speed settings
- Temperature alarm output
Nimbus AC Fan & Motor Speed Controller Dimensions
X = 1.06″ (26.9mm) for 240x6xxx-F
X = 2.06″ (52.3mm) for 240x7xxx-F
For CAD drawings, use the links in Additional Information below.
Nimbus AC Fan & Motor Speed Controller Part Numbers
| Part Number | Current Ratings (Amps @ 40C) | Packaging | Connections | Control Options | Stock Product |
| 240B2T00-F | 0.15 to 2.5 | PCB | Terminal Blocks | 4-20mA or 2-10VDC or Transducer or Temp Sensor1 or Fixed Speed | Yes |
| 240B6T00-F | 0.5 to 6.0 | PCB | Terminal Blocks | ||
| 240B7T00-F | 0.5 to 7.5 | PCB | Terminal Blocks | ||
| 240BJW00-F | 0.5 to 7.0 | Job Box Cover Plate | 18 AWG Wires | ||
| 240T2T00-F | 0.15 to 2.5 | PCB | Terminal Blocks | Transducer or Temp Sensor1 or Fixed Speed | No 50 Piece Minimum Order |
| DIN352-F | Optional DIN Rail Mount (compatible with PCB package only – click for dimensions) | ||||
1 When used in the temperature sensor or transducer control mode, a sensor is required. Choose an air, surface or liquid thermistor temp sensor from Control Resources or use your own transducer.
Ordering Information: The Nimbus is designed for Original Equipment Manufacturers (OEM) and is not intended for end-user or aftermarket applications. The Nimbus should only be used with compatible induction motors (Permanent Split Capacitor (PSC) or Shaded Pole) that are approved by the motor manufacturer for TRIAC (voltage) control prior to use. Attempting to control a motor that is not compatible could cause excessive heating and/or permanent damage to the motor.
Additional Information
• Nimbus Operation / Installation Datasheet (PDF)
• Nimbus 2A 3D STEP CAD drawing (.stp)
• Nimbus 6A 3D STEP CAD drawing (.stp)
• Nimbus 7A 3D STEP CAD drawing (.stp)
• DIN352-F STEP CAD drawing (.stp)
NOTE: If the CAD file opens as a new browser window with text, right-click the link, select “Save Link As”, and select a local folder to save the file.
• Price List