Heavy duty industrial encoder has optical transmission
21 March 2011
Mclennan Servo Supplies has introduced an optical encoder for harsh environment use with integrated fibre optic transmitter and separate receiver that makes possible position and speed feedback over long distances. The new XHI 801 Optolink is part of the 'Heavy Duty' 800 series from Leine & Linde, a Swedish encoder specialist.
In addition to long distance signal transmission of up to 1500 metres, the XHI 801 Optolink is unaffected by electromagnetic disturbances and has excellent galvanic insulation between the transmitter and receiver. These features are suitable for remote monitoring applications such as speed and blade pitch position for wind turbines or robotic manipulation positioning in hazardous areas. Other applications include EMC sensitive motion control and control systems that may be susceptible to lightning strikes.
The hollow shaft incremental encoder is available in a wide choice of angular resolutions from 500 to 10000 pulses per rev and features both optically transmitted and HTL, TTL or RS-422 electrical signals that may used together for both short distance servo control and long distance position monitoring. The separate receiver accessory converts the optically transmitted information into HTL or RS 422 level signals.
The XHI 801 Optolink is a ruggedised industrial grade encoder with IP67 ingress protection and a very high resilience to shock and vibration. With ceramic bearings, stainless steel hollow shaft and durable anodised aluminium housing, the encoder offers an extremely long life with low maintenance over an operational temperature range of -40ºC to + 80ºC.
Other Leine & Linde 800 series encoders available from Mclennan include ATEX versions, extra robust versions with HTL, TTL or RS422 electrical output, units with built-in advanced diagnostics for extreme levels of safety and reliability, and dual redundancy versions.
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