Allen-Bradley 1734-ARM POINT I/O Address Reserve Module

1734-ARM POINT I/O Address Reserve Module

Product Introduction

The Allen-Bradley 1734-ARM serves a unique and valuable function within the POINT I/O family. This module specifically reserves node addresses and slot positions for I/O modules that you plan to install later. By doing so, it maintains the numbering scheme of your control system. This means you can predefine the layout of your I/O rack without having all the physical modules present. Consequently, this module is an excellent tool for system engineers who want to plan for future expansion while keeping their current configuration organized.

Technical Specifications

The 1734-ARM has a very low power footprint. It draws a POINTBus current of just 75 milliamps. Its power dissipation is only 0.375 Watts, which translates to a maximum thermal dissipation of 1.3 BTU/hour at 5 Volts DC. This minimal power consumption makes it ideal for systems where power budgets are a primary concern, ensuring it does not overload the backplane supply. For status indication, the module features two logic-side LEDs; one green/red indicator shows the network status, and the other displays the module health.

Core Functionality and Application

The primary purpose of the 1734-ARM is to reserve an address in the POINT I/O backplane. When you remove a parameterized I/O module, the system might otherwise lose its configuration and addressing. Replacing it with this address reserve module retains the original signal module's structure and address. It effectively acts as a placeholder. The module does not communicate I/O data; instead, it simply occupies the slot, saving the node address for a later insertion. This feature is particularly useful for maintaining a consistent tag database in your PLC program, even before all hardware is physically installed.

Installation and Mounting

Installing the 1734-ARM offers maximum flexibility. The module has no designated key switch position, allowing you to install it in any slot with any key position. You can install it either before or after mounting the base onto the DIN rail. However, you must ensure the mounting base on the rail is keyed correctly for a secure fit. This module requires a compatible wiring base assembly, specifically the 1734-TB or 1734-TBS, to complete the physical installation.

Environmental Conditions

For reliable operation, keep the 1734-ARM within its specified environmental limits. The operational temperature must remain between -20 and 55 degrees Celsius (-4 and 131 degrees Fahrenheit). Additionally, the relative humidity should not exceed 95%, noncondensing. Following these guidelines ensures long-term reliability and prevents condensation-related issues inside the control cabinet.

Benefits of Using the 1734-ARM

This module offers significant benefits beyond simple address reservation. First, it simplifies system engineering by allowing you to pre-plan your I/O layout. Next, it reduces operating costs by minimizing the need for reprogramming when modules arrive later. Finally, it provides flexibility, making spare parts and inventory management easier. The 1734-ARM is therefore a smart investment for any automation project that anticipates future growth.

Shipping & Logistics

All orders for the 1734-ARM are processed promptly. We partner with leading global carriers for delivery. Our standard shipping methods include Fedex, UPS, and DHL, ensuring your order arrives safely and on time, regardless of your location.

Packaging List

• 1 x Allen-Bradley 1734-ARM POINT I/O Address Reserve Module

• 1 x Installation Instructions sheet

Frequently Asked Questions (FAQ)

1. Does the 1734-ARM module communicate I/O data to the controller?
No, it does not exchange I/O data. Its only function is to reserve a slot address for a future I/O module, keeping the system's addressing scheme intact.

2. Can I install the 1734-ARM in any slot of the POINT I/O rack?
Yes, it has no key switch position restrictions. You can install it in any slot, which provides great flexibility for system layout planning.

3. What is the power consumption of the 1734-ARM?
It has a very low power consumption, drawing just 75 milliamps of POINTBus current. Its maximum power dissipation is only 0.375 Watts.

4. Why would I need to reserve an address with this module?
Reserving an address allows you to maintain a consistent tag database in your PLC program. When you later add the real I/O module, the address is already defined, simplifying system integration.

5. Which wiring base is required for the 1734-ARM?
This module requires a compatible wiring base assembly, specifically the 1734-TB or 1734-TBS, to mount onto the DIN rail.