Orion Fans Offers a Variety of Special Functions for DC Fans
DALLAS, TX (February 3, 2009) - Orion Fans, a leading manufacturer of standard and custom AC and DC fans, offers a variety of special functions for its DC fans, including tachometer output, locked rotor alarm, pulse width modulation (PWM) input, and thermal and constant speed controls. These special functions provide end users with intelligent control options and feedback that optimize fan performance and maximize energy conservation.
"We are receiving increased demand from customers for special functions that better monitor the airflow in their electronic enclosures or reduce the overall energy consumption of their systems. These functions ensure the fans are operating properly and at optimal conditions," said David Luna, product marketing manager for Orion Fans. "And, by maintaining a large unassigned inventory of these fans, we are able to provide our customers with short lead times for volume orders."
Tachometer outputs and locked rotor alarms are available on most of Orion's DC fans. Tachometer output provides design engineers with an accurate means of monitoring and reporting a fan's rotational speed, as well as triggering of an alarm or indicator if the fan's speed falls below a certain RPM, both of which help to maintain consistent optimal fan performance. The tachometer output option is available as either a standard 5V TTL signal, or as an "open collector" signal. Locked rotor alarms detect whether a fan is running or has stopped by generating and transmitting a high or low output signal, minimizing fan downtime.
A number of Orion's DC fans are also available with PWM input, thermal speed control, and constant speed functions. PWM input varies the width of the electrical pulse in order to control the average voltage delivered to the fan, allowing for a higher efficiency than linear control provides. The PWM option also allows users to digitally control the speed of the fan by varying the electric pulse running to it.
Thermal speed control employs a thermistor-controlled circuit that increases fan speed only when the temperature rises above a determined set-point, thus reducing overall energy consumption by lowering fan speed when temperatures within the enclosure are below the set-point. Thermistor control circuits can be mounted directly in the fan hub or remotely mounted via an orange lead wire, and can be positioned anywhere within the enclosure, giving design engineers the flexibility to regulate fan speed based on ambient temperature in a specific area.
The constant speed function senses variable input voltage, which causes variations in power output, and maintains the fan's constant speed regardless of input voltage fluctuations.
Orion's extensive line of AC and DC fans and assemblies provide cooling solutions for a wide range of standard and specialty applications, including industrial controls, servers, telecommunications, computer equipment, motor drives and cabinets, and electronic enclosures and panels.
Orion Fans also provides both customization and value-added services to meet all customer requirements. All Orion fans meet UL/cUL, TUV, VDE and CE standards. Most of Orion's DC fan models are available with tachometer, locked rotor alarm, PWM input, thermal speed control, and constant speed options.
For more information about Orion's comprehensive line of AC and DC fans, fan accessories, special functions, fan trays, and blowers, contact an authorized Orion distributor; or contact Orion Fans at 10557 Metric Dr., Dallas, TX, 75243; call 800-323-2439, e-mail at dluna@orionfans.com, or visit Orion on the web at www.orionfans.com/.
Orion Fans, a division of Knight Electronics, Inc. is an ISO9001/2000 global manufacturer of standard and custom AC and DC fans, fan accessories, fan trays, and blowers. Established in 1995, Orion Fans supplies quality engineered and competitively priced cooling products and assemblies to OEMs worldwide. The company has engineering and manufacturing facilities in the United States, Europe, and Asia.
For more information, call 919-872-8172, or e-mail beth.gaddy@btbmarketing.com
Keywords: Orion Fans, Knight Electronics, special functions, tachometer, thermistor, PWM input, speed controls
URL: www.orionfans.com
