Configured for ControlNet coaxial network signal extension in Allen-Bradley ControlNet platforms, the Allen-Bradley 1786-RPA (1786-RPA Repeater Adaptor) provides direct electrical connection between ControlNet repeater components.

Model Configuration Details

The 1786-RPA is a ControlNet repeater adaptor designed for DIN rail installation. It provides the power interface and communication connection required for ControlNet repeater assemblies.

Hardware Specifications

Deterministic Network Communication Characteristics

The 1786-RPA operates within the Allen-Bradley ControlNet architecture and provides physical connectivity for repeater-based network expansion. The module maintains the electrical interface between ControlNet coaxial segments through BNC communication connections.

ControlNet networks use scheduled and unscheduled communication mechanisms for deterministic industrial data exchange. The repeater adaptor supports the physical infrastructure required for maintaining network topology across extended cable sections.

The module does not process application data. Its function is limited to communication infrastructure support, signal routing, and power delivery within the repeater configuration.

Ordering Information

The package configuration includes:

• 1 x Allen-Bradley 1786-RPA ControlNet Repeater Adaptor
• 1 x DIN rail mounting interface
• 1 x Power terminal connection interface

Additional ControlNet accessories such as coaxial cables, taps, terminators, or repeater modules are not included unless specified separately.

Field Installation Guidelines

Mechanical Mounting

• Install the module on a compatible DIN rail according to the control cabinet layout requirements.
• Maintain sufficient clearance around the module for wiring access and heat dissipation.
• Verify that the mounting position prevents mechanical vibration from affecting terminal connections.

Power Connection

• Connect a 24 V DC supply within the specified 18-36 V DC input range.
• Verify polarity before energizing the module.
• Use appropriate SELV power sources according to industrial installation practices.

ControlNet Wiring

• Connect the ControlNet coaxial cable through the BNC interface.
• Maintain proper cable routing separation from high-voltage power conductors.
• Confirm shield continuity through the complete ControlNet cable path.

Frequently Asked Questions

• What network protocol does the 1786-RPA support?

The 1786-RPA is designed for Allen-Bradley ControlNet communication networks and provides the physical interface required for repeater-based network connections.

• Does the 1786-RPA process ControlNet data?

No. The module provides communication infrastructure support and does not execute application-level ControlNet data processing.

• What power supply is required for the module?

The module requires a 24 V DC supply with an allowable input voltage range of 18-36 V DC.

• Can the 1786-RPA be installed on a DIN rail?

Yes. The module uses a DIN rail mounting design for installation inside industrial control cabinets.

• What is the maximum input current requirement?

The maximum input current rating is 700 mA at 24 V DC with SELV power input conditions.

• What is the maximum backplane output current capability?

The module supports a maximum backplane output current of 1.6 A at 5 V DC.

• What connector type is used for ControlNet communication?

The module uses a coaxial BNC single connector interface for ControlNet network connection.

• Are ControlNet cables included with the module?

No. ControlNet coaxial cables and related network accessories must be supplied separately unless included in a specific configuration.