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'Green fan' offers thermal speed control

Posted: 27 Oct 2008     Print Version  Bookmark and Share

Keywords:thermal speed control  DC fan  thermistor control circuit  energy consumption 

thermistor-controlled fans

For design engineers seeking a way to reduce energy consumption in industrial enclosures and electronic equipment cabinets, Orion Fans has developed a thermal speed control option for several of its DC fan models. The "green fan" option employs a thermistor control circuit that increases the fan speed only when the temperature rises above a determined set-point, thus reducing the fan's overall energy consumption by lowering the fan speed when temperatures within the enclosure are below the set-point.

The Orion Fans' thermistor-controlled fans are being specified for a wide range of applications, including industrial controls, servers, telecommunications, networking equipment, computer equipment, motor drives and cabinets, electronic enclosures and panels.

The thermistor control circuit can be mounted directly in the fan hub, or remotely mounted via an orange lead wire to be positioned anywhere in the enclosure, giving design engineers the flexibility to regulate fan speed based on ambient temperature in a specific area.

The thermistor control option is offered on the following Orion Fan DC models:

•OD8032 Series—80 x 32mm, 12/24/48V, 3200—4800rpm, 26—42cfm airflow

•OD8038 Series—80 x 38mm, 12/24/48V, 2500—4000rpm, 38—61cfm airflow

•OD1238 Series—120 x 38mm, 12/24/48V, 2000—3000rpm, 84—127cfm airflow

• OD127 Series—127 x 38mm, 12/24/48V, 2950—4500rpm, 107—242cfm airflow

• OD172S Series—172 x 150 x 51mm, 12/24/48V, 1600—3900rpm, 125—300cfm airflow

• OD180APL Series—180 x 65mm, 12/24/48V, 1700—2800rpm, 250—465cfm airflow

• OD254 Series—254 x 89mm, 12/24/48V, 1500—2500rpm, 500—900cfm airflow

In addition to the thermal speed control, other optional features available on most DC fan models include: tachometer output, PWM input, constant speed control with variable input voltage, and rotation detection alarm. All Orion fans are UL/cUL, TUV and CE approved.

Orion will provide additional customisation or value added services depending on customer requirements.

OEM pricing for fans with thermistor control starts at $15.00 each for 1-99 pieces of the OD8032 Series, available in the US and Europe from Orion or its authorised stocking distributors.

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