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  • 1794-OM8
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1794-OM8

Allen-Bradley 1794-OM8 | Flex I/O Digital Output Module | 240VAC

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  • Manufacturer: Allen-Bradley

  • Product No.: 1794-OM8

  • Product Type: Digital Output Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 300g

  • Shipping port: Xiamen

  • Warranty: 12 months

30 günlük yzyna gaýtaryş syýasaty · 12 aýlyk kepillik
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Düşündiriş

Product Overview

The Allen-Bradley 1794-OM8 is a Flex I/O digital AC output module with 8 nonisolated outputs. It operates at 240V AC nominal output voltage with a 4.0A output current rating. Weighing approximately 0.3 kg, the module fits inside the terminal bus, connecting field devices to the I/O bus. Modules can be inserted or removed under power since no direct wiring attaches to the I/O module, saving commissioning time and eliminating system restart inefficiency.

Technical Specifications

Parameter Value
Manufacturer Rockwell Automation
Brand Allen-Bradley
Part Number 1794-OM8
Product Type Flex I/O Digital Output Module
Outputs 8 Nonisolated
Output Voltage Nominal 240V AC (220V AC nominal on-state)
On-State Voltage Range 159 to 264V AC
Output Current Rating 4.0 A
On-State Current per Output 500 mA maximum, 5 mA minimum at 55°C
On-State Voltage Drop 1.5V AC @ 0.5A maximum
Off-State Leakage 2.5 mA maximum
Isolation Voltage 250V Continuous
Flexbus Current 60 mA @ 5V DC
Power Dissipation 5W @ 0.5A maximum
Thermal Dissipation 17.1 BTU/hr @ 0.5A maximum
Weight Approx. 0.3 kg
Compatible Terminal Bases 1794-TBNF, 1794-TBN
Operating Temperature 0 to 55°C (32 to 131°F)
Relative Humidity 5 to 95% non-condensing
Mounting DIN rail snap-on

Installation Guide

Snap the module onto a DIN rail for mounting. Use the 1794-TBNF or 1794-TBN terminal base unit for field wiring connections. The module supports insertion and removal under power since no direct wiring attaches to the I/O module itself. Verify output loads do not exceed 500 mA per output or 4A per module. Confirm output voltage remains within the 159-264V AC on-state range. Maintain 0-55°C operating temperature and 5-95% non-condensing humidity.

Engineering Advantages

The 1794-OM8 supports hot-swap removal and insertion, eliminating system restart downtime during maintenance. Eight nonisolated outputs in a single module reduce panel space requirements. Multiple communication options (ControlNet, DeviceNet, EtherNet/IP, Universal Remote I/O) enable flexible network integration. The 250V continuous isolation rating protects the backplane. XT versions are available for extreme environment operation, reducing panel and maintenance costs.

Technical FAQs

Q1: How many outputs does the 1794-OM8 provide?
A1: This module includes 8 nonisolated AC outputs with 240V AC nominal voltage and 4.0A module current rating.

Q2: Can the module be removed while power is on?
A2: Yes, modules can be inserted or removed under power since the I/O module has no direct wiring, saving commissioning time.

Q3: What terminal base units are compatible?
A3: The 1794-OM8 works with the 1794-TBNF and 1794-TBN terminal base units for field device connections.

Product Resources

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🏷️ Tags: Digital Output Module
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