TM 5-3895-374-24-2955-2571.5 WIRINGSuccessful operation begins with proper installation. Good installation requires not only that good wiring practices befollowed but also that reasonable protection be provided against external electrical influences that could interfere withcontroller operation. In addition all wiring must conform to applicable local and national codes. The controller should bewired with an external power disconnect and fuse.1.6 NOISESUPPRESSIONThe primary source of electrical interference (noise) that can impact any digital device is inductors most commonly foundas coils and windings in solenoids, relays and transformers. It is important to suppress any potential for electrical noise atits source to ensure reliable controller operation. Specifically this means putting noise suppression devices across theterminals of all inductors in your system.If you do not have the necessary components available, they may be purchased locally or in kit form from the factory.ITEMMAX.ACRATINGKITRC KIT240VACO.luF/220 ohms1821- 100MOVKIT130VAC35Joules1821- 98MOVKIT250VAC70Joules1821- 99When wiring to the controller, twisted pair with insulated shield is recommended for all signal leads. Make sure the shieldis grounded ONLY at the controller - use the AC power ground terminal 8. Be sure to protect against ground loops insignal leads, shields and all other input and output wiring.Low level signal leads and high level power cables must not be run in the same conduit or cable trays. Care when wiringmeans better system reliability.ECLIPSE INSTRUMENTATION DIVISIONpage 3 - 1083
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