Allen Bradley 1794-OA8I Isolated AC Output Module

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Brand Name                 AB

Product reference     1794-OA8

Connecting Wiring for the 1794-OA8 or 1794-OA8K 1. For 1794-TB2, 1794-TB3, or 1794-TB3S – Connect individual output wiring to even numbered terminals on the 0…15 row (A) as indicated in the Wiring Connections for 1794-OA8 and 1794-OA8K table. For 1794-TBN or 1794-TBNF – Connect individual output wiring to even numbered terminals on the 16…33 row (B) as indicated in the Wiring Connections for 1794-OA8 and 1794-OA8K table. 2. For 1794-TB2, 1794-TB3, or 1794-TB3S – Connect the associated V AC common (L2) lead of the output device to the corresponding odd numbered terminal on the 0…15 row (A) for each output as indicated in the Wiring Connections for 1794-OA8 and 1794-OA8K table; or to the corresponding terminal on the 16…33 row (B). (The V AC common (L2) terminals of row (B) and the odd numbered terminals of row (A) are internally connected together.) For 1794-TBN or 1794-TBNF – Connect the associated V AC common (L2) lead of the output device to the corresponding odd numbered terminal on the 34…51 row (C) for each output as indicated in the Wiring Connections for 1794-OA8 and 1794-OA8K table. (The odd numbered terminals of row (C) are internally connected together to V AC L2 common.) 3. Connect V AC power L1 to terminal 34 on the 34…51 row (C). 4. Connect V AC common L2 to terminal 16 on the 16…33 row (B).

5. If daisychaining V AC power (L1) to the next terminal base, connect a jumper from terminal 51 (V AC L1) on this base unit to terminal 34 on the next base unit. 6. If continuing V AC common (L2) to the next base unit, connect a jumper from terminal 33 (V common L2) on this base unit to terminal 16 on the next base unit. IMPORTANT Total current draw through terminal base connection is limited to 10 A. Separate power connections to each terminal base may be necessary.

Connecting Wiring for the 1794-OA8I 1. For 1794-TB2, 1794-TB3, or 1794-TB3S – Connect individual output wiring to the even numbered terminals on the 0…15 row (A). For 1794-TBN or 1794-TBNF – Connect individual output wiring to the even numbered terminals on the 16…33 row (B).

2. For 1794-TB2, 1794-TB3, or 1794-TB3S – Connect the associated V AC power lead (L1) to the corresponding odd numbered terminal on the 0…15 row (A) for each output as indicated in the Wiring Connections for 1794-OA8I table. For 1794-TBN or 1794-TBNF – Connect the associated VAC power (L1) lead to the odd numbered terminals on row (C).

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