Posted to News on 5th Apr 2011, 22:39
New optical encoder with fibre-optic data transmission
Mclennan is introducing the XHI 801 Optolink optical encoder for applications in harsh environments; it features an integrated fibre-optic transmitter and separate receiver that makes position and speed feedback over extremely long distances possible, as well as providing excellent EMC resilience.
The XHI 801 Optolink is part of the 'Heavy Duty' 800 series from Leine & Linde, the Swedish encoder specialist, and, in addition to long-distance signal transmission over distances of up to 1500m, the XHI 801 Optolink is unaffected by electromagnetic disturbances and has excellent galvanic insulation between the transmitter and receiver. These characteristics make the encoder well suited to remote monitoring applications such as speed and blade pitch position for wind turbines, or robotic manipulation positioning in hazardous areas. Other interesting areas of use will include EMC-sensitive motion control and where control systems may be susceptible to lightning strikes - such as cranes and hoists.
Mclennan offers the hollow-shaft incremental encoder in a wide choice of angular resolutions from 500 to 10000 pulses per revolution, featuring 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 encoder with IP67 ingress protection and high resilience to shock and vibration. With ceramic bearings, a 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 -40 to + 80degC.
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. Contact Mclennan for more information about these and the new XHI 801 Optolink optical encoder.
