Micronor Touts Fiber Optic Rotary Encoder

Micronor introduces ZapFree, a passive fiber optic rotary encoder for harsh environments

September 8, 2004

1 Min Read

NEWBURY PARK, Calif. -- 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.

Micronor offers the MR312 Encoder and MR310 Remote Encoder Interface (REI) as a turnkey solution with industry standard interfaces. The MR312 is packaged in a standard Size 58 (58mm OD) encoder housing and mechanically interfaces to motors and shafts like conventional encoders. The optical connection between the MR312 Encoder and MR310 Remote Encoder Interface (REI) module is via a single strand of industry standard 62.5/125 multimode optical cabling. Downstream, the MR310 REI converts the optical quadrature signals to both industry standard open collector outputs (A, B) and line driver outputs (A, A’, B, B’) for ease of connection to a conventional counter, PLC or computer interface board. The interface module is packaged in a standard 35mm DIN rail mountable module and draws a maximum 50 mA from a readily available 12-32 VDC power connection.

Micronor Inc.

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