By Roger Hope, Dave Harrold, David Brown
Keep watch over process energy and grounding is almost certainly the one most vital point to make sure a keep watch over approach does not adventure unidentified ''gremlins'' all through its lifestyles. the subject is suitable to each regulate method area, together with programmable good judgment controllers, procedure keep an eye on structures, robotics, imaginative and prescient platforms, and so on. continual and grounding is famous by means of an enormous criteria association, ISA, in ongoing criteria efforts. keep watch over Engineering and a number of other strength and grounding specialists have constructed this keep an eye on process energy and grounding source. whilst utilized in conjunction with regulate process producer set up documentation, clients can count on powerful, trustworthy keep an eye on procedure deploy; one who is still freed from ''phantom'' difficulties attributable to strength and grounding system faults. - presents readability for manufacturer's vague procedure documentation - the single unmarried resource keep watch over procedure strength and grounding consultant to be had. - info find out how to considerably increase reliability on top of things structures, saving worthy time and cash.
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Extra resources for Control System Power and Grounding Better Practice
It is especially severe when wires that carry different types of signals and have different energy levels run closely together.
4 The DIG must be effectively bonded to building steel [NEC 250-50(b)], and building steel must be properly grounded to earth ground. Refer to Chapter 7 for earth ground information. 5 Isolated local ground reference is used when several devices in the enclosure grouping require ground reference. Use stranded, insulated AWG 1/0 to 4/0 cable between isolated local ground reference and isolated common ground reference. 6 Use stranded, insulated AWG 1/0 to 4/0 cable between carrier shield bar and enclosure frame.
H Use ring tongue or flanged spade tongue connectors on terminal blocks to hold wires in place. H Avoid stray strands at stripped-back multi-strand wire that can short signals to other terminals. H Inspect all solder joints for proper solder connections. H Inspect wires at terminals to ensure that wire insulation is stripped back cleanly and that no insulation is under a wire connection at a terminal block or terminal strip. H Ensure that cables are run so that sharp metal edges cannot cut through cable insulation.
Control System Power and Grounding Better Practice by Roger Hope, Dave Harrold, David Brown