Allen-Bradley 1734-ARM Point I/O series address retention module

Allen-Bradley 1734-ARM is an address retention module in Rockwell Automation's Point I/O series. Here is a detailed introduction:

Product Overview

1734-ARM is used to reserve a slot position for future Point I/O modules and protect the internal circuit from dust and impurities. It is a passive module that does not provide I/O functions, but reserves expansion space in the system design for later upgrades or modifications.

Technical Specifications

Physical Characteristics

Dimensions: approximately 49mm (width) × 12mm (depth) × 144mm (height), compatible with other Point I/O modules.

Weight: approximately 63.8 grams.

Installation method: supports DIN rail installation, horizontal or vertical layout.

Environmental parameters

Operating temperature: -20°C to 65°C (-4°F to 149°F).

Storage temperature: -40°C to 85°C (-40°F to 185°F).

Humidity: 5% to 95% relative humidity (non-condensing).

Vibration resistance: 5g (10-500Hz).

Shock resistance: 30g.

Features

Slot occupation: Occupies a physical slot in the Point I/O system without affecting bus communications.

Dust protection: The closed design prevents dust, liquids or foreign objects from entering unused slots, protecting internal circuits.

Address reservation: Reserve specific addresses in the system configuration to ensure that no reprogramming is required when adding modules in the future.

Features

Flexible expansion

Allows the system to reserve I/O expansion space during the design phase, and the ARM module can be directly replaced with an actual I/O module later without changing the overall architecture.

Reduce maintenance costs

Protect unused slots from contamination, extend system life, and reduce failures caused by environmental factors.

Simplified configuration

The address of the ARM module is predefined in the PLC program. When adding actual modules later, there is no need to reallocate the address, which simplifies the debugging process.

Mechanical keying

Like other Point I/O modules, the ARM module has an anti-misinsertion design to ensure the correct installation position.

Typical application scenarios

New system reservation: In the early stage of automation system design, slots are reserved for possible future I/O expansion.

Transition of renovation projects: During equipment upgrades, slot positions are temporarily reserved to avoid frequent changes in the control cabinet layout.

Protection against harsh environments: Protect unused slots in industrial environments with dust, moisture or corrosive gases.

Notes

The ARM module is only used as a placeholder, does not provide any I/O functions, and cannot replace actual input/output modules.

The number of ARM modules in the system is limited by the load capacity of the communication adapter (such as 1734 - AENT), and needs to be configured in accordance with the product manual.

When replacing an ARM module with an actual I/O module, ensure that the system is powered off and the configuration is downloaded again.