GE DS215GGIAG1BZZ01B Channel contact card

A possible ignition hazard within the MMC exists if the maximum currents listed for Bus 2 or Bus 3 are exceeded or if excessive current is drawn at the 24 V line going into the MMC. If these currents might be exceeded (due to improper wiring or external device failure), circuit breakers or fuses should be used in series with the 24 VDC going to and coming from the MMC. Specifically, the circuit breakers or fuses should be sized for 10 A total on the 24V line coming into the MMC, 1 A total from the +24 VDC OUT pins of the AXIS and AUXILIARY I/O connectors, and 5 A total from the I/O 24V pins of the GENERAL I/O connector. For maximum protection, use fast blow fuses. When using molded cables supplied by Giddings & Lewis to connect the MMC to the drives, no overload protection is required.

Grounding the System 

The ground of the MMC power source must be connected directly to a Single Point Ground (SPG) tie block. The tie block should be made of brass or copper, bolted or brazed to the control cabinet. If the tie block is bolted rather than brazed, scrape away paint or grease at the point of contact. Put star washers between the tie block and the cabinet to ensure good electrical contact. Metal enclosures of power supplies, drives, etc., should also have good electrical contact with the SPG

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