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Design Features
The Model 771 C-face encoder is a rugged, high resolution, high temperature (100° C) encoder designed to mount directly on NEMA C-face motors. Both sides of the encoder are C-face mounts, allowing additional C-face devices to be mounted to this encoder. Other C-face units are kit type encoders, but the EPC Model 771 contains precision bearings and an internal flex mount thereby eliminating encoder failures and inaccuracies induced by motor shaft runout or axial endplay. This encoder is ideal for applications using induction motors and flux vector control. The Model 771 provides speed and position information for drive feedback in a slim line profile. The thru-shaft design allows fast and simple mounting of the encoder directly to the accessory shaft or to the drive shaft of the motor, using the standard motor face (NEMA sizes 182TC -256TC). The tough, all metal housing with thru-shaft design resists the vibration and hazards of an industrial environment. The standard high voltage differential line driver output operates from 5 to 28 volts DC and provides a clean signal over long cable lengths and resists electrically noisy environments common to many applications. Open collector, pull-up resistor and push-pull output options are also available. Standard output format is square waves in quadrature relationship with index reference optional. Standard resolutions are 250, 256, 500, 512, 600, 1000, 1024, 2048 and 4096 cycles per shaft revolution. Consult factory for other available resolutions. Applications
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