1771-OWNA

Product Overview

The 1771-OWNA from Rockwell Allen-Bradley is a digital contact output module designed for reliable switching and control in industrial I/O chassis.

Module Location

• Compatible Chassis: 1771-A1B thru A4B, 1771-AM1, -AM2 I/O Chassis

Voltage and Current Ratings

• Voltage Rating: 24–138 V AC RMS, 24–125 V DC

• Maximum Current per Output: 1 A (derates linearly 0.033 A/°C above 45°C)

• Maximum Current per Module: 12 A (derates linearly 0.4 A/°C above 45°C)

• Maximum Current per Group: 4 A (derates linearly 0.133 A/°C above 45°C)

• Surge Current: 1 A max per output (at rated power)

Power Specifications

• Power Rating: DC: 30 W per output (resistive) max, AC: 30 W per output (resistive) max

• Minimum Contact Load: 10 mA

• Operate/Release Time: 5 ms (±1 ms) typical

• Bounce Time: 1 ms max

• Switching Frequency: 10 Hz max

• Power Dissipation: All relays OFF: 15 mW; All relays ON: 12.5 W max

• Thermal Dissipation: All relays OFF: 0.05 BTU/hr; All relays ON: 42.75 BTU/hr max

Backplane and Isolation

• Backplane Current: 2.5 A max, 1.8 A nominal

• Isolation Voltage: 1000 V between open contacts, 1500 V between coil and contact

Wiring and Connection

• Interconnect Cable Length: 1000 ft (304.8 m) max

• Wire Size: 14 AWG stranded max, 3/64 in (1.2 mm) insulation max

• Category: 13

• Field Wiring Arm: Cat. No. 1771-WN

• Wiring Arm Screw Torque: 7–9 in-lb

• Keying: Between 6 and 8, Between 16 and 18

Environmental Conditions

• Operating Temperature: 0 to 60°C (32 to 140°F)

• Storage Temperature: -40 to 85°C (-40 to 185°F)

• Relative Humidity: 5 to 95% (without condensation)

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