Allen-Bradley 1734-IK Encoder Module | 24V Input

Allen-Bradley 1734-IK Incremental Encoder Module

Product Introduction

The Allen-Bradley 1734-IK serves as a versatile Incremental Encoder Module within the POINT I/O family. It accepts input voltages ranging from 15 to 24 Volts DC, making it suitable for a wide variety of industrial sensors. This module processes feedback from pulse generators, differential encoders, and single-ended encoders with equal ease. Moreover, it handles frequencies up to 1 MHz and returns data as a 24-bit binary value. The 1734-IK also works with mechanical limit switches, offering additional application flexibility. Its compact footprint and lightweight design simplify integration into new or existing control systems.

Technical Specifications

Input Voltage and Current Ratings

The 1734-IK operates with a nominal input voltage of 24 Volts DC, though it accepts a range from 15 to 24 Volts DC. Its input current measures 6.1 mA at 15 Volts DC and 10.2 mA at 24 Volts DC. During off-state conditions, the maximum current remains ≤ 0.250 mA, while the off-state voltage stays ≤ 1.8 Volts DC. In on-state conditions, the current reaches ≥ 5 mA, and the voltage measures ≤ 12.5 Volts DC. These clear electrical specifications ensure reliable performance across various operating conditions.

Counter and Frequency Capabilities

This module includes a single high-speed counter. It processes input frequencies up to 1 MHz, making it ideal for high-resolution motion feedback applications. The 1734-IK returns frequency or count values as a 24-bit binary number ranging from 0 to 16,777,215, expressed within a 32-bit long word. Additionally, each counter features a user-selectable preset value and a roller value for customized counting operations. This flexibility allows the module to adapt to different machine requirements without hardware modifications.

Signal Inputs and Encoder Support

The Allen-Bradley 1734-IK accepts A/A, B/B, and Z/Z return signal pairs. This configuration supports both differential and single-ended encoders, providing broad compatibility with common industrial sensors. The A and B channels deliver count and direction data, while the Z channel provides a reference marker pulse. Furthermore, the module also accommodates mechanical limit switches, expanding its utility beyond encoder-only applications. Consequently, the 1734-IK proves valuable in positioning, speed monitoring, and length measurement systems.

Power and Thermal Ratings

The module draws a maximum POINTbus current of 160 mA. Its maximum power dissipation reaches 1.5 Watts at rated load, with a corresponding thermal dissipation of 5.1 BTU/hour. Notably, the 1734-IK does not require any external DC power supply, as it draws operating power directly from the POINTbus backplane. This design choice simplifies wiring and reduces overall system component count.

Mechanical and Environmental Specifications

The 1734-IK measures 2.21 x 0.47 x 2.97 inches and weighs just 0.08 pounds. Its operating temperature spans -20 to 55 degrees Celsius, while its non-operating range extends from -4 to 85 degrees Celsius. Furthermore, it withstands non-condensing relative humidity from 5% to 95%. The module 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 robust environmental specifications make the Allen-Bradley 1734-IK suitable for demanding factory floor conditions.

Status Indicators and Diagnostics

Five status indicators provide clear visual feedback about the module's condition. One red/green indicator displays the module status, while another red/green indicator shows the network status. Three additional yellow indicators monitor the A, B, and Z input signals. When an input toggles, its corresponding yellow indicator flashes, offering real-time signal verification. This diagnostic feature significantly aids troubleshooting during system commissioning and maintenance.

Installation and Mounting Guidance

Mounting Options

The 1734-IK supports DIN rail mounting for straightforward installation. Simply snap the module onto the rail after attaching it to a compatible wiring base. Suitable wiring bases include the 1734-TB, 1734-TBS, 1734-TB3, or 1734-TB3S models. These bases provide the necessary terminal connections for field wiring. The module's open-style enclosure allows easy access during installation and future maintenance activities.

Wiring Requirements

This module accepts solid or stranded copper wire ranging from 22 to 14 AWG. Its signal ports carry a wiring category rating of 1. The key switch position is set to 2, ensuring correct integration within the POINT I/O system. For optimal performance, ensure all field wiring connections are properly terminated and secured. Following the manufacturer's recommended wiring practices helps prevent signal errors and electrical noise issues.

Data Communication

The 1734-IK communicates via the POINTbus backplane. It produces 6 or 10 bytes of input data for the scanner and consumes 1 byte of output data. The module transmits frequency readings as a 24-bit binary number within a 32-bit long word. Additionally, each counter includes user-configurable preset and roller values for application-specific counting. This data structure ensures seamless integration with Rockwell Automation controllers and other POINT I/O components.

Compatibility and System Integration

The Allen-Bradley 1734-IK integrates smoothly into any POINT I/O system. It works alongside other I/O modules, providing a cohesive and expandable control solution. The module's support for multiple encoder types and mechanical switches makes it a versatile choice for various industries. Whether used in packaging, material handling, or machine tool applications, the 1734-IK delivers consistent and reliable performance. Its plug-and-play design minimizes setup time and reduces engineering effort.

Packaging List

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

• One 1734-IK Incremental Encoder Module

• One mounting bracket (pre-installed)

• One quick start installation guide

Please note that wiring bases (1734-TB, 1734-TBS, 1734-TB3, or 1734-TB3S) are not included and must be ordered separately. All components are packed in anti-static packaging to ensure safe delivery.

Shipping Information

We ship all orders using FedEx, UPS, or DHL. Standard delivery typically requires 3 to 5 business days, depending on the destination country. Expedited shipping options are also available for urgent requirements. Every shipment includes full tracking and insurance coverage. Contact our sales team for detailed shipping quotes and estimated delivery times.

Frequently Asked Questions

Q1: What voltage range does the 1734-IK support?
A1: The 1734-IK accepts input voltages from 15 to 24 Volts DC, with a nominal rating of 24 Volts DC. This range provides flexibility when connecting to various industrial sensors.

Q2: Which wiring bases work with the 1734-IK?
A2: The 1734-IK is compatible with the 1734-TB, 1734-TBS, 1734-TB3, and 1734-TB3S wiring bases. Select the base that best matches your terminal block preferences.

Q3: Does the 1734-IK require an external power supply?
A3: No, the 1734-IK draws its operating power directly from the POINTbus backplane. Users do not need any additional external DC power supply for module operation.

Q4: What types of encoders can I connect to this module?
A4: The 1734-IK supports both differential and single-ended encoders, as well as pulse generators and mechanical limit switches. This versatility covers most industrial feedback applications.

Q5: What is the maximum frequency this module can process?
A5: The 1734-IK handles input frequencies up to 1 MHz. It returns the count or frequency as a 24-bit binary value ranging from 0 to 16,777,215.