Telecom Cooling

Custom Fan Speed Control Example


Custom Fan Speed Control - Telecom Cooling Application

Telecom Cooling Design using 24V 4-Wire fans.

The challenge of this telecom cooling application was to provide advanced features required by the customer into a small circuit board area. The unusual shape of the PCB was designed to "wrap" around six fans, allowing more area for fan speed control circuitry. This multi layer board has parts on both side and uses fine pitch SMT components. The success of this innovative fan speed control design resulted in it being used in three telecom cooling platforms by the customer.

CRI's ISO 9001:2008 registered electronic design and manufacturing facilities have the capability to provide complete custom fan speed control design for telecom cooling applications from prototype to production.

Custom Fan Speed Control for Telecom Cooling using 24V Fans

Custom Fan Speed Control - Telecom Cooling Application

Telecom Cooling - Custom Fan Speed Control Specifications

  • Supply voltage: -36 to -72 VDC


  • Fans: Six 24 VDC, 1.5A, 4-wire fans


  • Dual "buck" regulators. Fan current is 5A per regulator at 55°C


  • Fan speed control based on I2C communications


  • Provides fan status based on monitoring fan tach pulses


  • Optically isolated logic alarm outputs for single and multiple fan failure


  • I2C bus transmits circuit board inventory and temperature information


  • Both power feeds and individual fans are fused


  • All input and output lines have EMI suppression


  • Active current limiting is provided for normal operation, startup, hotplug and fault conditions


Additional Custom Fan Speed Control Designs
for Telecom Cooling Applications


Please contact us to discuss your custom telecom cooling application needs.
Fan Speed Control Design for Telecom Cooling Equipment using 48V Fans Fan Speed Control Design for Telecom Cooling Equipment using 24V Fans Fan Speed Control Design for Telecom Cooling Equipment using 12V Fans
Telecom Cooling Fan Control using 48V Fans

FEATURES:

  • Supply Voltage: -33 to -72 VDC
  • Four 4-wire 48 VDC fans
  • Dual "boost" regulators up to 5.5A per regulator
  • Fan Control: PWM signal based on temperature
    		•  Telecom Cooling Fan Control using 24V Fans

    FEATURES:

  • Supply Voltage: -36 to -72 VDC
  • Six 4-wire 24 VDC fans
  • Dual "buck" regulators up to 5A per regulator
  • Fan Control: PWM signal based on I2C command

    •  
    		 Telecom Cooling Fan Control using 12V Fans

    FEATURES:

  • Supply Voltage: -36 to -72 VDC
  • Six 4-wire 12 VDC fans
  • Six individual 2A "buck" regulators for a total of 12A
  • Fan Control: PWM signal based on remote command



    • "SmartFan, the Standard in Telecom Cooling Design"


    Let Control Resources help you with your custom
    fan speed control design & telecom cooling requirements.
    Contact our SmartFan design group today.


    Call 978-486-4160 today or fill out our Contact Form.

    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 for your application.

    To visit other SmartFan Product Groups:
    Click on AC Fan and Motor Speed Control to learn about SmartFan variable speed AC control solutions.
    Click on DC Fan and Motor Speed Control to learn about SmartFan variable speed DC control solutions.
    Click on Fan Speed Alarm to learn about SmartFan fan alarm solutions.
    Click on Custom Design to learn about Control Resources custom design and manufacturing capabilities.

    Custom Fan Speed Control - Telecom Cooling Application
    SmartFan Design Group




    Control Resources Home | News and Info | Technical Data | Catalog | Contact Us | Applications | About Control Resources
    Control Resources Incorporated 11 Beaver Brook Road Littleton MA, 01460 USA Tel: 978-486-4160 Fax: 978-486-4772 email: sales@controlres.com
    I