1771-OBD non-isolated output module

Description

The Allen-Bradley 1771-OBD is a Sixteen (16) channel, non-isolated output module that is part of the

1771 Product bulletin. This module is especially compatible for use with the PLC5 product family, typically

used for energizing DC powered electrical loads such as pilot lamps, relay coils, solenoid actuated devices and

other devices. It has an output voltage range of 10-60 VDC with nominal voltage output of 48 VDC.

The 1771-OBD’s output channels are rated 2 A, resistive, not-exceeding 8 A per module and 0.2 A per pilot duty

output. Each channel has minimum Surge current rating of 4 A per output for 10 ms, repeatable every 2 s and maximum

of 25 A per output for 10 ms, repeatable every 2 s while the module’s minimum load current is 2.5 mA.

1771-OBD

The 1771-OBD’s On-state voltage drop is 1.5V dc; maximum Off-state leakage current of 0.5 mA; Output

signal delay of 0.1 ms for Off to On transition and 0.2 ms for On to Off transition. It is mounted to any of the

1771-A1B through 1771-A4B I/O chassis except the 1771-A4 I/O chassis. It is compatible for use with the 1771-WH,

1771-WHF and 1771-WHFB Field Wiring Arms with tightening force requirement of 1.0 Nm (9 lb-in) and module

keying of between 10 and 12 / 22 and 24. Appropriate signal wires for termination of output devices to each of the

module’s channel ranges from 0.34-2.5 mm2 (22…14 AWG) solid or stranded copper wire with insulation rating of 120 °C

(248 °F) or greater and maximum insulation thickness of 1.2 mm (3/64 in.).

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