ABB NE820, Руководство пользователя

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Section 2 Interface specifications
Figure 4. In/Out Directions Description
Power Connection
NE820 supports redundant power connection. The positive inputs are +DC1 and
+DC2, the negative input for both supplies are –COM. Connect the primary volt-
age (e.g. +24 VDC) to the +DC1 pin and return to one of the –COM pins on the
power input.
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