Allen-Bradley 1756-OH8I ControlLogix Output Module

Allen-Bradley 1756-OH8I ControlLogix eight-point DC digital output module provides eight isolated outputs rated up to 2 A per point for 90–146 V DC loads, designed for ControlLogix backplanes with 36-pin channel interfaces. Each output is independently isolated from the backplane and from other points (250 V continuous isolation), with a 125 V DC voltage category for sink/source operation; the module draws about 210 mA at 5.1 V for logic and about 2 mA from the 24 V rail, yielding roughly 1.11 W backplane power and a maximum dissipation of 3.3 W at 60 °C. The module supports fast switching with 2 ms maximum delay both OFF-to-ON and ON-to-OFF, allows 4 A surge per point for 10 ms (repeatable every 1 s at 60 °C), and provides fault-state behavior that holds the last state (OFF is the default) with no internal fusing (external protection recommended).