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Welcome to the Control Resources

Fan Alarm Cooling Solutions Page

Should a fan or blower in a ventilation or cooling solution application fail, the results can be disastrous. In computer & telecommunication equipment, failure of an air mover may cause operational failure or even permanent damage. In ventilation applications, contaminants may build to dangerous levels, equipment may fail or livestock may perish.

Over the past 2 decades, Control Resources has become one of the leading OEM control suppliers of fan alarm cooling solutions, AC motor speed controls and DC motor speed controls to the electronics, telecommunications and HVAC industries. Control Resources offers the SmartFan line of off-the-shelf and custom control solutions and alarms to meet your requirements in the most efficient and cost effective manner.

Here are two effective methods of detecting air mover failure using fan monitor speed and temperature monitor technologies. These fan alarm cooling solutions technologies are available on many standard SmartFan OEM control products and can be provided in custom control and alarm designs.

Fan Alarm Cooling Solutions - Tach Alarms

Air mover speed is sensed using pulses generated by a Hall Effect device installed in the fan. Below a predetermined speed, an alarm is triggered. This method is very reliable, however it requires a special fan with a Hall Effect connection. Because the Hall Effect device is part of any brushless DC fan, the output adds little to cost. However, this fan monitor speed feature adds significant cost to an AC fan and is not be available on most models.
Fan Alarm TachScan-9 TachScan-9 senses tach pulses from up to nine DC fans or AC fans and provides pass/fail signals. Three trigger speeds are selectable by jumper. Outputs can drive LEDs, logic, optical isolators or MOS relays
TachScan-9
 
TachScan-3 senses tach pulses from up to three DC fans or AC fans. It provides normally closed (NC) and normally open (NO) optically isolated alarm outputs as well as current limited outputs for driving red and green LEDs.
TachScan-3
 
Fan Alarm TachStrip TachStrip uses a modular break away design for use with up to six DC fans. Trigger speed is adjustable using a jumper. Each unit provides separate NC and NO outputs in addition to an OR’d output if any fan connected to the TachStrip should fail. All outputs are referenced to the negative terminal of the fan.
TachStrip
  

Links:

To view more information, please use the following links below:
Click on Catalog to go to our catalog page to select the SmartFan variable speed control and alarm for your application.

To visit other SmartFan Product Groups:
Click on Variable Speed AC Fan and Motor Control to learn about SmartFan AC Controls.
Click on Variable Speed DC Fan and Motor Control to learn about SmartFan DC Controls and Alarm.
Click on Custom Design to learn about Control Resources custom design and manufacturing capabilities.




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