The panel-mount 1781-7B08 and DIN-rail mount 1782-7B08 are 8-channel backplanes for use with the 1781-7B, WRC7, or compatible module line. Both backplanes are powered by a user supplied 24 V dc power supply with primary and secondary recepticles for uninterrupted operation. One 25-pin D-type connector provides a connection to the logic side of the 1781-7B08. Field-side terminations are achieved with screw terminations. For the 1781-7B08, 3/4″ standoffs are provided for panel mounting. DIN-rail mounting is provided for the 1782-7B08. The 1781-7B08 Mounting Board is fuse protected through F1. If the input supply voltage connection is reversed, diode DI will protect the modules. Provision is available for a user-provided second 25-pin D-type connector.
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