SmartFan®
Stratus



 

 

Fig. 1: Stratus With Cover

 

Fig. 2: Stratus Model 240F400

 


Stratus Variable Frequency Drive for AC Motors, Fans and Pumps

The SmartFan Stratus variable frequency drive is an economical, yet highly versatile drive that provides precise variable speed control of single- and three-phase fans, motors and pumps. A typical VFD drive is compatible with more motors, can control to lower speeds, has a more linear control curve and is more energy efficient at reduced speeds than a TRIAC (voltage) based control. This microprocessor based VFD drive is ideal for applications including environmental control (temperature, humidity, pressure, flow), clean room pressurization, equipment cooling, exhaust ventilation and heating/air conditioning systems. On-board programming allows the setting of many parameters providing maximum flexibility. Special and custom variable speed control configurations are available.

Benefits of using SmartFan Stratus variable speed control include acoustical noise reduction, environmental (humidity, temperature or pressure) regulation, greater product reliability, increased fan life, improved safety and energy savings
.

Control Comparison & Motor Efficiency
See technical article on how the Stratus compares
to other controller technologies.

Product Features
  • Selectable voltage-frequency curve, preset linear and fully programmable
  • Programmable acceleration and deceleration rates
  • On-board status/fault LEDs and remote alarm signal indicate loss of control signal, over temperature or over current conditions
  • Isolated control inputs
  • Programmable temperature control mode options:
    • One or two remote, OR’d temperature sensors
    • Four full speed temperature settings
    • Two control temperature slopes
  • Programmable fan/motor turn off at idle
  • Agency approvals pending

Selectable Options
  • Input Power: 115 & 230 VAC ±10%
                         47-64 Hz
                         Single Phase
  • Output Power: 1 kW load rated for three-phase output
                           800 Watts load rated for single-phase @ 240 VAC
                           400 Watts load rated for single-phase @ 120 VAC
  • Fixed 20 kHz PWM rate
  • 0 to 400 Hz output frequency
  • Overload current protection
  • Controls fan/motor speed based on:
    • 4-20 mA control signal
    • 2-10 VDC control signal
    • Remote temperature sensor (thermistor)
    • 0-18 VDC transducer (powered from Stratus)
    • Modbus communication link
    • Dual control option (i.e. temperature and humidity)
  • Storage Temperature: -40°C to 125°C
  • Ambient Operating Temperature: -20°C to 40°C






Part Numbering System
Nimbus Control Mode Enclosure

240F400

240F402

240F400E

240F402E

0-10VDC, 0-20mA, Remote Temperature Sensor, Remote Transducer, MODBUS

MODBUS Only (50 piece minimum order)

0-10VDC, 0-20mA, Remote Temperature Sensor, Remote Transducer, MODBUS

MODBUS Only (50 piece minimum order)

No

No

Yes

Yes


When used in the temperature or remote transducer control mode, a sensor (sold separately) is required.
Choose an air, surface or liquid temperature sensor from the CRI catalog or via your own transducer.

Stock Product
240F400
240F400E



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