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Guide lines for connecting non-isolated AC supplies

Ground:

Control common

Motor chassis

Amplifier's heatsink

Do not ground:

Power common

(The power common is a hot point and any grounding will cause an input rectifier failure).

Caution:

-If source of motor command is grounded, use amplifier's differential input. Otherwise, a ground loop is created.

DBP - Rev 6/93

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Image 69
Elmo DBP SERIES manual Guide lines for connecting non-isolated AC supplies, Ground, Do not ground