Allen-Bradley 1794-OF8IH | Flex I/O HART Analog Output Module

Allen-Bradley 1794-OF8IH Flex I/O Isolated HART Analog Output Module

The Allen-Bradley 1794-OF8IH provides advanced HART communication capability for process control applications. This intelligent module offers eight isolated analog outputs with high-resolution signal control. It enables seamless integration with HART-enabled field devices for comprehensive process monitoring.

Core Specifications

• Model: 1794-OF8IH
• 8 isolated single-ended output channels
• 0-20 mA or 4-20 mA signal range selection
• 16-bit high resolution (0.305 µA per bit)
• 10ms conversion rate with 70ms settling time
• 80mA FlexBus current draw at 5V DC
• Weight:0.2kg
• 5.0W maximum power dissipation

HART Communication Features

• Built-in HART pass-through messaging capability
• 8 message queues per communication link
• Dedicated 6-word HART data register
• IEEE 754 floating-point data format
• Direct HART device configuration support
• Real-time device parameter access

Diagnostics & Protection

• Lead break detection for wiring faults
• Overrange and underrange alarm monitoring
• Continuous signal integrity checking
• Isolated channels for system protection
• Enhanced process safety features

Performance Characteristics

• 17.06 BTU/hr thermal dissipation at 24V DC
• High accuracy signal generation
• Fast response times for process control
• Stable output under varying conditions
• Industrial-grade reliability

Package Contents

• 1794-OF8IH HART analog output module
• Installation and configuration guide
• HART communication documentation
• Technical specification sheet

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