Degree Controls Inc.
Milford, NH 03055
Mar 26, 2008 Ruggedized to meet both Mil-STD-461 and Mil-STD 810F testing requirements, fully configurable Thermal Controllers leverage proprietary software allowing for programmable alarm thresholds and fan curves. On-board microcontroller monitors and controls fan speeds, communicates with host through serial interfaces, measures temperatures, detects filter blockages, and reports alarms.

Degree Controls Inc.
Milford, NH 03055
Jan 15, 2008 Used with engineered thermal solutions for electronic equipment, ATCA-compliant dual IPMI bus fan tray controller offers multiple filter clog and maintenance schemes as well as fan failure prediction and monitoring. Real-time selection of fan tray mode enables synchronized, closed-loop control of RPMs. Controller also offers real-time IPMI-based configuration of alarm thresholds and fan control curve set points as well as access to fan speeds, PWM values, and CLEI code data.

ICM Controls
Cicero, NY 13039
Dec 06, 2007 Used to protect AC/refrigeration systems, models ICM325/326/327HN are temperature-sensitive, motor fan speed controls that regulate head pressure by varying amount of airflow through condenser. Products run motor fan consistently at lower speed, rather than cycling it on or off, and continuously make any necessary temperature adjustments. Suited for temperature- and humidity-sensitive environments, each model can control up to 3 refrigerant circuits.

Control Resources, Inc.
Littleton, MA 01460
Sep 24, 2007 SmartFan Fusion-9 controls speed for up to 9 fans based on temperature, single- or dual-I2C interface, or analog control signal (PWM, 5.0 Vdc). Digital unit offers ATCA compliance for managed or intelligent FRU cooling systems and meets telecommunication industry's open standard for carrier-grade systems by communicating with shelf management modules via dual IPMBs. Control provides FRU information, individual fan status, and temperature readings.

Control Resources, Inc.
Littleton, MA 01460
Jun 04, 2007 Measuring 1.5 x 5 in., SmartFan Vortex I2C fan speed control is compatible with fans that offer open collector or voltage source tach pulses, and monitors tach pulses from up to 4 fans with maximum current rating of 5 A at 55°C or less. It accepts fan speed commands (including on/off) and gives individual pass/fail fan status via I2C interface. Fan speed can also be based on temperature. I2C interface provides temperature readings from on-board thermistor and EEPROM storage.

Rockwell Automation
Milwaukee, WI 53204
Jan 25, 2007 Suited for commercial fan and pump applications, PowerFlex 400 Drives feature integral RS485 communications interface that supports standard building automation networks, including Modbus RTU, N2, and Siemens P1-FLN. Embedded PID controller adjusts output frequency to maintain process variable, while 3 programmable skip frequencies and bands prevent drive from running continuously at resonant speeds. Disconnect and contactor bypass packages facilitate installation and startup.

TAC
Carrollton, TX 75006
Apr 27, 2006 Fan coil version of Xenta 121 can be used in 2- and 4-pipe installations and configured for use with variety of valve actuators, while heat pump model handles reversing and isolation valves and can be configured for up to 3 compressors. Demand-based, multifunctional fan control program handles multistage and variable speed fans for optimal comfort. Exception Modes allow users to pre-configure different modes to override normal control in case of specific event.

SKF
Elgin, IL 60123
Aug 25, 2005 With free floating lining that supports in-chassis replacement, Kysor™ HRU On/Off Fan Drive Assembly's 2-piece modular design facilitates service of component. Failsafe™ feature keeps fan clutch engaged in event of air system pressure failure, and effective cooling enables fan drive to manage increased under hood temperatures and heat environments.

Beck, Harold, & Sons, Inc.
Newtown, PA 18940
May 02, 2005 Suited for large fan dampers typical of utility FD and ID applications, Group 22 Control Drive provides positioning of final control elements with resolution down to 0.1% of span. It is fully enclosed in weatherproof housing rated for service environments from -40 to +185°F. On-board control module feeds drive's motor windings directly, eliminating external motor starters and controls. Drive does not coast or overshoot, and will not overheat under continuous modulation.

Microchip Technology, Inc.
Chandler, AZ 85224 6199
Jul 11, 2002 TC6xx controllers provide thermal protection in temperature-sensitive electronics. Fan speed can be programmed by output of remote thermistor or by SMBus communication based commands. Units detect fan wear-out before fan stops rotating by reading rpm data from up to 2 individual fans. Offered in 10-pin MSOP packages, devices have operating voltage range of 3.0 to 5.5 V and temperature range of -40 to +85°C.

Zetex, Inc.
Hauppauge, NY 11788
May 16, 2002 ZXBM2000 series of ICs controls 2-phase, dc brushless fan and blower motors up to 100W. ZXBM2003 provides frequency generator rotor speed output; ZXBM2002 offers locked rotor error output; and ZXBM2M001 combines both signals on dual function pin. All deliver up to 80 mA to pair of external MOSFET or bipolar transistors connected to fan motor windings. Speed control is implemented via variable external voltage or NTC thermistor input.

Denison Hydraulics Inc.
Marysville, OH 43040
Apr 24, 2002 Hydraulically powered fan drive cools engines used in construction, transportation, railroad, power generation, and similar industries. Replacing mechanically coupled fan drive with hydraulic version permits fan to be operated at optimum speed over entire duty cycle, consuming only as much power as is needed to accomplish task. Controller monitors inputs from temperature sensors in cooling loops and adjusts fan speed to keep all systems within limits.

ABB Industrial Power Products
New Berlin, WI 53151 2840
Feb 01, 2002 Side-by-Side electronic bypass/drive fits into air-handling units and pumping packages, making it suitable for single-motor HVAC fan and pump applications. Bypass/drive signals damper to open and waits until it receives confirmation that damper is fully open, before allowing motor operation. Drive is available in plenum-rated NEMA 1 or NEMA 12 enclosure. Windows(R) tool facilitates set-up, commissioning, and maintenance of drive and bypass.

Quest Controls, Inc.
Palmetto, FL 34221-4802
Nov 26, 2001 TELSEC™ 500 extends heat exchanger fan and battery life in remote site cabinet for wireline and wireless telecom industries. It provides variable speed control of up to six heat exchanger fans, lets fan motors run at minimum speed necessary to maintain tight and stable temperature control within cabinet, and monitors and sends alarms to telecom alarm and/or maintenance center through dry contact closures.