Programmable Over-speed Function for L&L 800 Encoders
Schaumburg, IL - (July 2014) - Leine & Linde’s 800 rotary encoder series now includes an integrated over-speed capability with programmable switching speeds. In many industrial applications like wind turbines, steel plants or loading cranes, it is common for an incremental encoder signal to be complemented with a separate relay output for over-speed indication. This is typically used to protect equipment from damage due to loss of control, or personnel who might be in proximity to such equipment and where such a failure could cause injury. By incorporating the relay outputs into the encoder, the additional wiring and enclosure associated with the external solution are eliminated. This simplifies cabling, and improves reliability by reducing the number of components and interconnects.
Because a critical speed limit will vary with the motor type and application in the same plant, there may be a need for different over-speed configurations on different drives. The programmable over-speed provides flexibility as the same unit may be applied to different installations in the plant and programmed with specific settings during installation. Programming is made over USB with help of PC software. Up to three separate relay outputs can be configured with different switching speeds.
Over-speed outputs are available for the 850 shaft encoder and 861/862 through-shaft encoders.
For more information, contact product manager Bob Setbacken at HEIDENHAIN at 805-562-1160 or e-mail at bsetbacken@heidenhain.com , or write to HEIDENHAIN Corporation, 333 E. State Parkway, Schaumburg, IL 60173.
Leine & Linde is based in Sweden with exclusive North American distribution through HEIDENHAIN Corporation in Schaumburg, IL. Leine & Linde is well known for offering high quality, heavy duty encoders of both the incremental and absolute types, are noted for their product robustness and design to cope with the harshest of environments, such as those with high vibration, dirt and cold temperatures. These heavy, severe duty encoders are suited for drive and measurement applications and are often found in industries such as pulp and paper, forest and wood processing, agriculture, aggregate and mining equipment.
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