Standard and Custom-Designed Fan Speed Control & Alarm Products

Fan Speed Control & Alarm Products for Telecom Cooling Applications

For over 3 decades, Control Resources has specialized in designing fan speed controllers for the telecommunications industry; customer list.

SmartFan fan speed control products regulate fan speed based on temperature (thermistor), control signal (PWM or DC) or I2C communication link. Temperature alarms and fan failure alarms are available on many fan speed control models. Complete custom fan speed control design and manufacturing services as well as custom fan tray assembly are available to provide you with the optimum solution for your telecom cooling application.

Standard Fan Speed Control Products for Telecom Cooling Applications

Telecom Cooling Applications SmartFan Vortex

SmartFan Vortex 12V
Fan Speed Control

  • Supply Voltage: 12 VDC single feed
  • Fans: Up to Four 12 VDC @ 5A
  • I2C and temperature-based fan speed control, reporting, and alarming
Telecom Cooling Applications SmartFan Multi SD

SmartFan Multi SD 12-48V
Fan Speed Control

  • Supply Voltage: 10 – 75 VDC single or dual (diode OR’d) power feeds
  • Fans: Any number in parallel up to 4A
  • Fan failure alarm through connected TachScan fan speed alarm

SmartFan Cirrus-2 PWM
Fan Speed Control

  • Supply Voltage: 10 – 60 VDC single feed
  • Fans: One or Two PWM “4-wire” fans up to 10A
  • Analog (0-10VDC/4-20mA) and temperature-based PWM fan control
Telecom Cooling Applications SmartFan Cirrus 6

SmartFan Cirrus-6 PWM
Fan Speed Control

  • Supply Voltage: Compatible with SmartFan Storm Power Regulator
  • Fans: Up to Six PWM “4-wire” fans up to 6A
  • I2C and temperature-based fan control and alarm

Custom Fan Speed Control Designs for Telecom Cooling Applications

We have more than 30 years experience designing and producing custom SmartFan fan speed control and fan alarm products. With over 400 custom designs for OEM fan speed controls and alarms since 1984, we are equipped to handle your specific requirements including the following:

Telecom Cooling Fan Control
using 12V Fans

  • Custom packaging, including circuit board shape and special connectors
  • Fan speed control based on :
    • Temperature
    • Temperature differential
    • VDC or current input
    • I2C, RS232 or other control signal
    • Remote transducer
  • Unique power or fan quantity requirements

Custom Fan Tray Design
for Telecom Cooling using 24V Fans

  • Fan supply voltage regulation, “clamping”
  • Redundant “diode OR’d” power supplies
  • EMI filtering
  • Hot pluggable
  • Full voltage startup
  • In-rush current limiting “soft start” at startup
  • Boosting fan voltage above the supply voltage
  • Fan synchronization

Telecom Cooling Fan Control
using 48V Fans

  • Redundant or multiple OR’d control signals
  • Fan On / Fan Off trigger points
  • Multiple alarm trigger points
  • Custom alarm outputs
  • Fan speed (RPM) or board temperature reporting via I2C, RS232, MODBUS or any serial-type bus.
  • Provide PWM or VDC control signals to fans with built-in speed control
  • ATCA compliance for telecom applications

Additional Information

• Custom Fan Tray Design
• Fan Alarms
• Customer List
• Advantage of a Control Resources Design Partnership