New Digital PWM Motor Controls from LCR Electronics Provide High Speed Switching and Bi-directional Operation
Posted on: Tuesday, 26 May 2009, 11:43 CDT
The high voltage EC104 and the low voltage EC106, with control methods for either two or four quadrant operation, are adaptable to many different DC brush, shaded pole and PSC motor applications including appliances, pumps, compressors, blowers, conveyors and traction systems.
Onboard potentiometer and switch input options are provided for easy human interface. For applications requiring uni-directional DC brush motor operation, the controls can also be simplified to eliminate unneeded components and keep costs low. Other factory-installed options are parking brake, coast, open-loop (coarse control without feedback) or closed-loop (plus or minus 2% RPM using feedback) control and soft start to extend motor life.
Both the EC104 and EC106 boards can operate as a single-phase variable-frequency drive to adjust motor speed, making them ideal for use with AC motors with high starting loads and in-rush limitations.
The EC104 has an input of 120/240 VAC and a typical load current of 3 A that can be upgraded to 20 A. Output can be configured for 150 or 300 VDC. The EC106 has an input of 12 or 24 VDC and a 5 A maximum load current, also upgradable to 20 A. The controls, which operate at a de-rated temperature range of -20 degrees C to 85 degrees C (-4 degrees F to +185 degrees F), are available with an optional conformal coating for use in humid or wet environments. The competitively-priced controls are RoHS-compliant and available in EMI-compliant versions.
Because LCR Electronics concentrates on product development and rapid prototyping, the boards, as with all motor controls from LCR, can be quickly and cost-effectively customized for specialized applications. The company's complementary EMI filters can easily be designed into a customized board early in the process, further decreasing design costs and cycle time.
Pricing starts at
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SOURCE LCR Electronics
Source: PR Newswire
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