Operation / Installation
SmartFan Cirrus-9 is a PWM fan speed control and alarm that offers an off-the-shelf cooling solution for 4-wire fans and blowers. Cirrus-9 can control and monitor tach pulses from up to nine 12, 24, or 48 VDC 4-wire fans. The PWM fan speed control and alarm accepts fan speed control commands (including on/off) and provides individual pass/fail fan status via an I2C interface.
The I2C interface also provides temperature readings from an on-board thermistor and EEPROM storage. The Cirrus-9 can be configured for PWM fan speed control based on temperature or analog control signal (PWM, 5.0 VDC). Configuration of the Cirrus-9 PWM fan speed control and alarm is settable via I2C inteface or options can be set at the factory to your specifications.
I2C Design Tips: Check out our review of the advantages of using I2C communication for PWM fan speed control in telecom cooling applications.
In addition to the standard line of SmartFan controls and alarms, Control Resources also provides custom control design and manufacturing services to provide you with the optimum cooling solution for your OEM PWM fan speed control applications.
|Specifications||Features / Options|
Cirrus-9 PWM Fan Control Dimensions
Cirrus-9 PWM Fan Control Part Numbers
|4WR9C00-F||Open Collector PWM Fan Control Signal|
|4WR9V00-F||0-12 VDC PWM Fan Control Signal|
|H128-F||Hardware Pack (Connectors, Terminals, Mounting)|
*When used in the temperature or transducer (5.0 VDC) control mode, a sensor (sold separately) is required.
Choose an air, surface or liquid temperature sensor or via your own transducer.