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
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
Fan Speed Control Design for Telecom Cooling Equipment using 24V Fans
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
Fan Speed Control Design for Telecom Cooling Equipment using 12V Fans
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.

SmartFan Design Group

Back to top
Follow by Email
Facebook
LinkedIn
Google+
PINTEREST

Initially designed for our own engineering lab, CRI also offers versatile, low cost test equipment for test benches, laboratories, field work and repair facilities.