Allen-Bradley/Rockwell Automation 1771-OBN field wiring arm

This digital DC Output Module, 1771-OBN, by Allen Bradley, is supplied as open-type equipment, not intended for an industrial environment greater than Pollution 2 when applied in a Zone 2 environment; it should only be accessible by using the appliance, as it contains components that are susceptible to damage by electrostatic discharge. Its electrostatic discharge is 4 kV on contact and 8 kV through the air.

Technical specifications for 1771-OBN

ManufacturerRockwell Automation

BrandAllen-Bradley

Part Number/Catalog No.1771-OBN

Module TypeDigital DC Output Module

Number of Outputs32 (4 sets of 8)

Voltage Category10-60 Volts DC, Source

DC Operating Voltage10-30 Volts

Backplane Current330 Miliamperes

Max Continuous Current Per Output0.5 Amperes (2 A/set)

Max Continuous Current Per Module8 Amperes

Wiring Arm1771-WH

CoatingConformal Coat

Data FormatBDC or Natural Binary

Typical AC Signal Delay (Off)45 (+/- 15) ms

Typical DC Signal Delay (Off)50 ms

MountingRack Mountable

The isolation voltage of this unit is around 1500 Volts of AC RMS; it comes with four groups of eight outputs, making a total of thirty-two (32) outputs with an output voltage range between 10 and 30 Volts of DC power; its output current rating is 0.5 A per output, its maximum backplane current is330 mA at 5 Volts of DC, and its isolation voltage has been tested for sixty seconds to withstand up to 500 Volts.