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Latest News
SmartFan® Stratus-II |
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- SmartFan Stratus has been very successful in the OEM marketplace since product introduction in 2006. In response to customer feedback and internal VFD design innovations, CRI will release our SmartFan Stratus II variable frequency drive in January 2010.
SmartFan Stratus II is a microprocessor based variable frequency drive designed for OEM applications in HVAC, electronic and industrial control markets. Stratus II is designed to control single and three-phase fans, motors and pumps in AC motor speed control applications including environmental control (temperature, humidity, pressure, flow), clean room pressurization, equipment cooling, exhaust ventilation and heating/air conditioning systems.
Design enhancements incorporated into the SmartFan Stratus II include:
- UL Recognition
- Increased capacitance for hi-torque applications
- Allows analog control and Modbus functionality at the same time
- Improved response time (control signal input – output regulation)
- Improved control from potentiometer input
- USB interface
On-board programming allows easy set-up for motor control based on an analog control input. For added versatility, Stratus II can be programmed and controlled using ModBus or USB interfaces. The ease of operation, small size and innovative microprocessor design make Stratus II the most cost effective variable frequency drive available for low power AC motor speed control.
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- Nate Lavoie, CRI's VP of Engineering has developed more than fifty I2C based fan speed controls for telecom cooling applications. The I2C bus is generally considered the standard format for management communication within the telecom chassis. Nate offers this technical article as an aid to design engineers responsible for telecom cooling systems. The article provides an overview of the advantages of using the I2C bus and discusses three main elements of the I2C specification that are essential to ensure a stable and error free system: Open Collector Consideration, Clock Stretching and Error Detection.
Also provided is a link to “The I2C-bus and how to use it” from Philips Semiconductor (now NXP). This document is considered to be the best source of information for proper I2C-Bus implementation. The article also includes a sample I2C flow protocol diagram and I2C protocol specification from CRI's SmartFan Fusion Fan Speed Control and Alarm. SmartFan Fusion is an off-the-shelf fan speed control and alarm design specifically for telecom cooling applications.
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- Control Resources, Inc., a leading OEM design and manufacturing services company is pleased to announce that it has been awarded “Gold Master Certification” status in the Microchip Design Partner program. From the hundreds of companies in the Microchip Design Partner program, CRI is one of the select few to be awarded Gold status. CRI has extensive experience utilizing the Microchip PIC and dsPIC family of products in over 300 designs including:
Click on above logo or below for more information :
CRI awarded GOLD Master Certification in the Microchip Design Partner Program.
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LabStrobeTM LED Stroboscope from CRI |
New economical strobe, only $219, for measuring speed of rotation or frequency of vibration |
Control Resources is pleased to announce the addition of LabStrobe to our test equipment product line. The LabStrobe stroboscope is used to measure the speed of rotation or frequency of vibration of a fan, motor, or other mechanical part or system. Stroboscopes have the advantage of not loading or disturbing the equipment under test. Mechanical equipment may be observed under actual operating conditions. Parasitic oscillations, flaws, and unwanted distortion at high speeds are readily detected. The latest in PHILIPS LUMILED technology provides this pocket sized strobe with unparallel brightness and battery life at this price point.
LabStrobe LED Stroboscope features/specifications:
- Pocket sized enclosure (4.94" x 2.88" x 1.28")
- Microprocessor controlled
- Battery (2 AA) powered for portability
- Low battery indicator
- Advantages of LED technology over older Xenon lamps:
- No costly lamp to replace
- No heat generation
- Ultra high efficiency for longer run time
- Fast response rate
- Immune to mechanical shock and vibration
- Five digit digital flash rate display
- 30 - 20,000 pulses per minute range
- Six button membrane for easy operation
- Flash rate adjustment (4 buttons):
- Coarse: Multiply by 2, Divide by 2
- Fine: Up, Down with incremental speed adjustment
- Flash phase adjustment (2 buttons):
- Up, Down with incremental speed adjustment with 1° resolution
- RoHS compliant
- Hand-held and tripod mountable (tripod ordered separately)
- Operating temperature: 14° to 104° F (-10° to 40°C)
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The innovative microprocessor design and LED technology incorporated in the LabStrobe LED Stroboscope makes this compact, low cost stroboscope an ideal choice for field work, test benches, laboratories, universities and repair facilities. Available for purchase from our web site on the LabStrobe catalog page.
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SmartFan® Nimbus-HP |
New AC Motor, Pump and Fan Speed Control for applications up to 18 Amps |
- SmartFan Nimbus-HP is a TRIAC based motor, pump and fan speed control designed for OEM applications in HVAC, electronic and industrial control markets. The Nimbus-HP automatically controls single phase motors that have been approved for voltage control by the motor manufacturer. The Nimbus-HP regulates motor speed from a control signal (2-10VDC, 4-20mA) or up to three remote temperature sensors (thermistors). Typical applications include: humidity control, clean room pressurization, equipment cooling, heat exchangers, exhaust ventilators, pumps, duct fans & blowers. On-board programming allows the settling of many parameters providing maximum flexibility.
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