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Product ReleaseMICRONOR Offers MR221/MR222 Series UL/cUL-Approved Geared Limit Switches
 For Heavy Duty Industrial Applications Newbury Park, CA - Micronor’s new MR221/MR222 series UL/cUL listed Heavy Duty Geared Limit Switches combine gear box, coupling and cam switches in one compact unit. The units are intended for use in the most demanding industrial applications – bridges, cranes, hoists, stage/theatre rigging, presses, packers, machine tools and other similar operations where motion is expressed in shaft rotation. Product options include: single- (MR221) or dual-ended (MR222) shafts, step-up or step-down gear ratios; and NEMA 6/6X / IP66 rated powder-coated die cast aluminum or stainless steel enclosures. The MR22X series meet UL 508 performance and safety requirements. The MR22X series is often used as either a primary control or back-up safety device to the equipment under control. The standard units feature a heavy duty ½” (12.7mm) stainless steel shaft (with #404 Woodruff keys provided) and heavy duty, sealed bearings. The individual cam switch channels (from 2 to 8) are independently programmable over 4-356 degree; while the heavy duty sealed switches (rated 6A-continuous/10A-momentary) offers both NO/NC contacts and field replaceable. COMBICON screw-down wiring blocks provide for ease of hook-up. A cam programming tool (stored internally), Woodruff keys and two built-in ½" NPT conduit hubs/plugs are supplied with each unit. Micronor also specializes in custom engineered configurations including application-specific housings as well as integration with other feedback/position sensors (i.e. optical encoders, fiber optic encoders, resolvers, tachometers, potentiometers, selsyns and 4-20mA outputs). For the past 40 years, Micronor has been a demonstrated leader in custom engineered feedback transducers as well as replacements for obsolete and out-of-production position feedback units (by Baumer, BVR, Crouzet, Eucron, Micron, etc.). Offering a wide range of configuration options, the Micronor standard MR22X series are built-to-order with typical 2-3 week lead times. A typical MR221 unit housed in aluminum housing with 4 cam switch channels and 100:1 gear ratio - is $999 each in small quantities. |
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Micronor’s new MR314 ZapFREE™ High Resolution Fiber Optic Rotary Encoder was designed for large drive and rotary shaft applications requiring EMI immunity, higher resolution (1024ppr) and the mounting convenience of a traditional hollow shaft encoder package. There are no integral electronics within the encoder housing and the all-optical design requires just a single optical fiber connection – the utmost in simplicity, reliability and ease of installation. The MR314’s totally passive design outperforms conventional optical and magnetic rotary encoders over a wide range of harsh and/or hazardous environments: wide extended operating range (-60°C/+150°C); outdistances copper cable; intrinsically safe and ATEX-compliant; immune to EMI/RFI and ground loops; unaffected by high magnetic fields; and radiation resistant. Special versions can be easily engineered for thermal-vac environments.
This new Micronor product provides a simple and inexpensive solution for automating existing systems controlled by manually-operated potentiometers, rheostats or rotary cam switches. Motor Pots may not seem like a sexy control product but they fulfill a wonderful niche in process control! They are simple to use and easy to set up. No computers required or software to write. Easy to maintain and never obsolete. The user-specified potentiometers provide absolute positional feedback information or function as a variable resistor in an analog control or bridge circuit. The motor pot provides a smooth uniform ramp throughout its timing cycle. Rotary limit switches are programmed (via cams) to electrically control events (or provide status) at pre-stages. A few common applications include ramping up the field current of a DC motor or controlling the start-up of a generator.
Micronor’s MR310 ZapFREE Remote Encoder Interface (REI) Module is the system interface end of the ZapFREE Fiber Optic Rotary Encoder system – for motion control applications in harsh and hazardous environments.
Micronor’s new MR312 ZapFree Incremental Rotary Encoder (patent pending) is the world’s first commercially-available, entirely passive encoder for rotation sensing applications. There are no integral electronics within the encoder housing and the all-optical design requires just a single optical fiber connection – the utmost in simplicity, reliability and ease of installation. The MR312 offers immunity to lightning and atmospheric static that would “zap” conventional encoders; outdistances copper cable by allowing link lengths to 1000 meters (3280 feet); its inert nature proves ideal for use in hazardous and explosive environments; and its intrinsic EMI/RFI resistance allows for safe and reliable operation in and around medical equipment and other “noisy” industrial environments.
Extends Reach Between Controller and Encoder
Micronor’s new MR121 Encoder Cable is guaranteed to solve nagging ground loop and interference problems in motion control systems. The product uses Micronor’s ZapFREE technology which employs the use of fiber optic technology within the cable assembly, but in a manner completely transparent to the user. The MR121 product looks and functions like a standard electrical encoder cable. The equipment operator simply disconnects the existing controller-to-sensor connections and replaces them with corresponding MR121 ZapFREE Encoder Cables. No engineering redesign is required or needed.
