Allen-Bradley 1734-IE8CK High-Density Input Module 8-Channel

Product Introduction

The Allen-Bradley 1734-IE8CK is a high-density Analog Input Module designed for the POINT I/O family. This module provides eight single-ended, non-isolated current input channels. It accepts standard 0-20 mA or 4-20 mA signals from field transmitters and sensors. Furthermore, its 16-bit resolution ensures precise measurement across the full signal range. The module uses a delta-sigma conversion type for accurate, noise-resistant data acquisition. What sets this module apart is its conformal coating, which protects the internal electronics from environmental stressors. Therefore, the 1734-IE8CK is ideally suited for applications in humid, dusty, or chemically exposed locations.

Technical Specifications

This section details the core technical capabilities of the 1734-IE8CK module.

Input Characteristics

The 1734-IE8CK provides eight single-ended, non-isolated current input channels. Specifically, each channel accepts either 0-20 mA or 4-20 mA signals. Therefore, you can connect a wide variety of transmitters, including pressure, temperature, and flow sensors. Moreover, the effective input range extends to 21 mA, allowing for overrange detection. The input impedance is 60 Ohms, which minimizes loading effects on your field devices. Consequently, this module ensures accurate signal acquisition without disturbing the measurement loop.

• Inputs: Eight (8) single-ended, non-isolated

• Signal Type: Current

• Input Signal Range: 4-20 mA or 0-20 mA

• Input Impedance: 60 Ohms

• Input Conversion Type: Delta-Sigma

Resolution and Accuracy

The 1734-IE8CK delivers exceptional measurement precision. Its 16-bit resolution spans the 0-21 mA range, providing detailed granularity for accurate readings. Furthermore, the absolute accuracy is 0.1% of full scale at 25 °C (77 °F). This high accuracy makes the module suitable for demanding process control and monitoring applications. Meanwhile, the delta-sigma conversion technology effectively rejects electrical noise, ensuring stable readings even in industrial environments. Therefore, you can trust the data from the 1734-IE8CK for critical control tasks.

• Resolution: 16 bits over 0-21 mA

• Absolute Accuracy: 0.1% Full Scale @ 25 °C

• Data Format: Signed Integer

Conformal Coating Protection

The 1734-IE8CK includes a built-in conformal coating that distinguishes it from standard modules. This protective layer shields the circuit board from moisture, dust, and chemical vapors. For instance, in food processing or chemical plants, airborne contaminants can damage unprotected electronics. However, the conformal coating on the 1734-IE8CK significantly extends the module's operational life in such conditions. Additionally, this coating reduces the risk of corrosion and electrical shorts caused by condensation. Therefore, this module offers enhanced reliability for harsh-environment installations.

Overload Protection and Power

The 1734-IE8CK is designed to withstand electrical faults. Its maximum overload voltage rating is 28.8V DC, providing robust protection against voltage spikes. This feature safeguards both the module and connected field devices from damage. Meanwhile, the module operates with low power consumption, generating minimal heat. Consequently, you can install multiple modules in a dense configuration without overheating concerns.

• Maximum Overload Voltage: 28.8V DC

• Enclosure Type: Open style

Supported Terminal Bases

The 1734-IE8CK requires a compatible wiring base assembly for installation. Specifically, it works with the 1734-TB3 or 1734-TB3S terminal bases. These bases provide the physical connection points for field wiring. Additionally, they supply power to the module through the backplane. Therefore, ensure you select the correct terminal base for your system configuration. Proper base selection ensures reliable electrical connections and mechanical support.

System Integration Requirements

The 1734-IE8CK is a POINT I/O module that requires a communication adapter to function. Specifically, the module will not operate without an appropriate POINT I/O communication adapter installed. Therefore, you must integrate it with a suitable adapter, such as the 1734-ENT, 1734-ADN, or other compatible options. The adapter handles communication between the module and the controller. Meanwhile, the module creates data tables within the PLC's memory containing channel data and status information. Consequently, proper configuration ensures seamless data exchange within your control system.

Mechanical and Environmental Parameters

The 1734-IE8CK is built for reliable operation in demanding industrial environments. Thanks to its conformal coating, it withstands higher humidity and contaminant levels than standard modules. Its compact design saves valuable panel space. Furthermore, the module is robust enough for typical factory conditions.

• Mounting: DIN rail mountable

• Enclosure Type: Open style

• Operating Temperature: -20 to 55 °C (-4 to 131 °F)

• Storage Temperature: -40 to 85 °C (-40 to 185 °F)

• Relative Humidity: 5 to 95% (non-condensing)

Calibration and Configuration

The 1734-IE8CK is factory calibrated, eliminating the need for field calibration. However, proper configuration is essential for optimal operation. You must set the input range and scaling parameters using your configuration software. Additionally, you can enable or disable diagnostics and alarming features per channel. Since the module uses signed integer data format, ensure your PLC program interprets the data correctly. Overall, the configuration process is straightforward and well-supported by Rockwell Automation's software tools.

Installation Guidelines

Proper installation of the 1734-IE8CK ensures reliable and accurate operation. First, mount the appropriate terminal base (1734-TB3 or 1734-TB3S) onto the DIN rail. Next, snap the module onto the terminal base until it locks securely. Then, connect your field wiring to the terminal base following the wiring diagram. After wiring, configure the module using your software tool. Finally, verify all connections and apply power to the system. Additionally, always power down the system before installation or removal to protect both personnel and equipment.

Packaging List

When you receive your new 1734-IE8CK, the package will contain the following items. Please inspect the contents upon delivery.

• 1 x Allen-Bradley 1734-IE8CK High-Density Input Module

• 1 x Installation instructions sheet

Note: The module ships as a single unit. The terminal base (1734-TB3 or 1734-TB3S) is ordered separately. No interconnecting cables or additional accessories are provided.

Shipping Information
We ship all orders using premium, trackable carriers such as Fedex, UPS, and DHL. A tracking number will be emailed to you promptly after dispatch.

Frequently Asked Questions (FAQ)

Q1: What is the main difference between the 1734-IE8C and the 1734-IE8CK?
A1: The primary difference is the conformal coating on the 1734-IE8CK. This protective coating provides enhanced resistance to moisture, dust, and chemical contaminants, making the 1734-IE8CK better suited for harsh environments than the standard 1734-IE8C.

Q2: Does the 1734-IE8CK support voltage inputs?
A2: No, the 1734-IE8CK is designed exclusively for current inputs. It accepts either 0-20 mA or 4-20 mA signals. For voltage input applications, please consider other POINT I/O analog input modules.

Q3: What terminal base is required for the 1734-IE8CK?
A3: The 1734-IE8CK requires either the 1734-TB3 or 1734-TB3S wiring base assembly. These bases provide the mechanical support and electrical connections for the module. Ensure you order the appropriate base separately.

Q4: Can the 1734-IE8CK operate without a communication adapter?
A4: No, the 1734-IE8CK will not operate without an appropriate POINT I/O communication adapter installed. The adapter is essential for communication between the module and your PLC or controller.

Q5: Is field calibration required for the 1734-IE8CK?
A5: No, the 1734-IE8CK is factory calibrated and does not require any field calibration. However, you must properly configure the module's data parameters for correct operation within your control system.