1794-OA8I

Description

• Product No.: 1794-OA8I

• Type: AC digital output module

• Manufacturer: Allen‑Bradley (Rockwell Automation)

Electrical Ratings

• Number of Outputs: 8, isolated

• Recommended Terminal Base: 1794‑TBN(1), 1794‑TBNF, 1794‑TB2, 1794‑TB3, 1794‑TB3S, 1794‑TBKD, 1794‑TBNK, 1794‑TBNFK, 1794‑TB3K, 1794‑TB3SK

  • (1) Auxiliary terminal strips required when using 1794‑TBN

• Output Voltage (min): 85 V AC

• Output Voltage (nom): 120 V AC

• Output Voltage (max): 132 V AC

• Output Current Rating: 4.0 A (8 outputs @ 500 mA)

• On‑State Current (min): 5.0 mA per output

• On‑State Current (max):

  • 500 mA per output @ 55 °C (131 °F) – sufficient to operate Allen‑Bradley Bulletin 500 NEMA size 3 motor starter

  • 750 mA per output @ 35 °C (95 °F)

  • 1.0 A on 4 non‑adjacent outputs, 500 mA on remaining 4 outputs @ 30 °C (86 °F)

• On‑State Voltage Drop (max): 1.0 V @ 0.5 A

• Surge Current: 7 A for 40 ms, repeatable every 8 s

• Off‑State Leakage Current (max): 2.25 mA

Isolation

• Isolation Voltage: 120 V continuous, field to backplane, channel to channel

• Tested: 1250 V AC for 60 s

• Isolation: Between individual channels

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