Allen-Bradley 1734-IM2 Input Module | 240V AC 2-Point

Allen-Bradley 1734-IM2 Digital AC Input Module

Product Introduction

The Allen-Bradley 1734-IM2 is a highly compact Digital AC Input Module from the POINT I/O family. It features just 2 non-isolated sinking inputs, making it one of the smallest modules in the series. This module operates at a nominal voltage of 220 Volts AC, with a wide acceptable range from 159 to 264 Volts AC. Consequently, it suits applications that require monitoring of AC line voltages or sensing the presence of AC-powered devices. Additionally, its small size allows engineers to maximize I/O density in space-constrained control cabinets. The 1734-IM2 provides reliable AC input sensing with minimal power consumption.

Technical Specifications

Input Voltage and Current Ratings

The 1734-IM2 accepts an input voltage range of 159 to 264 Volts AC at 47 to 63 Hertz, with a nominal rating of 220 Volts AC. Its on-state current varies from 6.2 mA at 159 Volts AC to a maximum of 10.2 mA at 264 Volts AC, with a nominal current of 8.5 mA at 220 Volts AC. During off-state conditions, the maximum voltage measures 43 Volts AC, and the maximum current reaches only 2.9 mA. The nominal input impedance is rated at 22.3 kiloohms. Furthermore, the module's continuous isolation voltage from field-side to system is rated at 240 Volts, ensuring safe separation between high-voltage inputs and the control system.

Power and Thermal Ratings

The 1734-IM2 draws a maximum POINTbus current of 75 mA at 5 Volts DC. Its maximum power dissipation reaches 0.48 W at 264 Volts AC, with a corresponding thermal dissipation of 1.63 BTU/hour. At its rated load, the module dissipates just 0.1 Watts maximum, making it exceptionally energy-efficient. This low power consumption reduces heat buildup within the control cabinet, contributing to overall system reliability. The module's efficient design also minimizes the load on the POINTbus power supply.

Input Configuration and Compatibility

This module provides 2 non-isolated sinking inputs, organized as a single group of 2. The 1734-IM2 requires a keyswitch position of 8 on the mounting base. Compatible wiring bases include the 1734-TB, 1734-TBS, 1734-TOP, and 1734-TOPS terminal base units. For field wiring, the module accepts solid or stranded copper wire from 14 to 22 AWG, rated at 75 degrees Celsius. The open-style enclosure allows easy access during installation and maintenance. Users should ensure the keyswitch is correctly set to position 8 before mounting the module to prevent configuration errors.

Status Indicators and Diagnostics

The 1734-IM2 features real-time status indicators that allow operators to monitor input states at a glance. These indicators provide visual confirmation of each input's on/off condition. This diagnostic capability simplifies troubleshooting and reduces downtime during system maintenance. Furthermore, the module's compact design does not compromise its diagnostic features, as the indicators remain clearly visible even in dense panel installations. Operators can quickly identify input status changes without additional testing equipment.

Mechanical and Environmental Specifications

The 1734-IM2 measures just 2.21 x 0.47 x 2.97 inches and weighs approximately 1.09 ounces (30.9 grams). Its operating temperature spans -20 to 55 degrees Celsius, while its non-operating range extends from -40 to 85 degrees Celsius. The module withstands non-condensing relative humidity from 5% to 95%. It also handles operating vibration of 5 g at 10 to 500 Hertz, along with an operating shock rating of 30 g and a non-operating shock rating of 50 g. These environmental specifications make the Allen-Bradley 1734-IM2 suitable for demanding industrial settings, including automotive, packaging, and material handling applications.

Installation and Mounting Guidance

Mounting Options

The 1734-IM2 supports DIN rail mounting for quick and secure installation. Simply snap the module onto the rail after attaching it to a compatible wiring base. Suitable bases include the 1734-TB, 1734-TBS, 1734-TOP, and 1734-TOPS models. Ensure the keyswitch on the mounting base is rotated to position 8 before installing the module. This step is critical for proper module recognition within the POINT I/O system. The open-type enclosure allows easy access during wiring and future maintenance.

Wiring Requirements

This module accepts copper wire sizes ranging from 14 to 22 AWG, either solid or stranded. All field wiring must be rated at 75 degrees Celsius minimum. The 1734-IM2 uses 2 non-isolated sinking inputs, meaning proper grounding practices are essential for reliable operation. Connect the AC supply to the appropriate terminals on the selected wiring base. Double-check all connections before applying power to prevent damage to the module or connected equipment.

System Integration

The 1734-IM2 integrates seamlessly into any POINT I/O system. It communicates via the POINTbus backplane, requiring a maximum current of 75 mA at 5 Volts DC. This low bus current draw allows more modules to be powered from a single supply. The module is compatible with various Rockwell Automation controllers, including ControlLogix and CompactLogix platforms. Its simple two-input design makes it ideal for applications where only a few AC inputs are needed, reducing system cost and complexity.

Common Applications

The Allen-Bradley 1734-IM2 excels in applications requiring high-voltage AC sensing. Typical uses include monitoring motor starter status, sensing AC power presence, and detecting the state of AC-powered limit switches. It also works well in HVAC control systems, conveyor monitoring, and packaging machinery. The module's compact size makes it especially valuable in retrofit projects where panel space is limited. Furthermore, its wide input voltage range accommodates varying AC supply conditions commonly found in industrial facilities.

Packaging List

Each shipment of the Allen-Bradley 1734-IM2 includes the following items:

• One 1734-IM2 Digital AC Input Module

• One mounting bracket (pre-installed)

• One installation instructions sheet

Please note that wiring bases (1734-TB, 1734-TBS, 1734-TOP, or 1734-TOPS) are not included and must be ordered separately. All components are packed in anti-static packaging for safe transit.

Shipping Information

We ship all orders via FedEx, UPS, or DHL. Standard delivery typically requires 3 to 5 business days, depending on your location. Expedited shipping options are available upon request. Every shipment includes full tracking and insurance coverage. Contact our sales team for specific shipping quotes and estimated delivery timelines.

Frequently Asked Questions

Q1: What keyswitch position does the 1734-IM2 require?
A1: The 1734-IM2 requires the keyswitch on the mounting base to be rotated to position 8. Ensure this setting before installing the module.

Q2: Which wiring bases are compatible with the 1734-IM2?
A2: The 1734-IM2 works with the 1734-TB, 1734-TBS, 1734-TOP, and 1734-TOPS terminal base units. Choose the base that best fits your wiring preferences.

Q3: What is the input voltage range for this module?
A3: The 1734-IM2 accepts AC voltages from 159 to 264 Volts AC at 47 to 63 Hertz, with a nominal rating of 220 Volts AC.

Q4: How many inputs does the 1734-IM2 provide?
A4: The 1734-IM2 provides 2 non-isolated sinking inputs, organized as a single group of 2. This compact design saves panel space.

Q5: What is the continuous isolation voltage rating?
A5: The 1734-IM2 offers 240 Volts of continuous isolation voltage from the field side to the system, ensuring safe operation with high-voltage AC signals.