1734-IE4C 4-Channel Current Input POINT I/O Allen-Bradley

1734-IE4C 4-Channel Current Input Module

Product Introduction

The 1734-IE4C belongs to the Allen‑Bradley POINT I/O product family and serves as a high‑density analog current input module. It provides four single‑ended, non‑isolated current input channels. These channels are user‑configurable for either 0...20 mA or 4...20 mA signal ranges. The module delivers 16‑bit resolution across the 0...21 mA range, offering a sensitivity of 0.32 μA per count. This high channel count makes it an ideal choice for applications requiring multiple analog inputs in a compact footprint.

Technical Specifications

The 1734-IE4C employs a Delta‑Sigma conversion type for accurate digital representation. Its absolute accuracy reaches 0.1% of full scale at 25 °C. The module converts external analog signals into digital values using a signed integer data format. Specifically, it produces a raw value ranging from ‑32,768 to +32,767. This raw value then serves as the input for the programmable logic controller to process logic and control algorithms.

The module operates with a DC voltage range from 10 to 28.8 Volts DC, with 24 Volts DC nominal. It dissipates 0.55 Watts of power at 28.8 Volts DC. Additionally, its thermal dissipation reaches 2.0 BTU/hour at the same voltage. This efficiency makes it suitable for dense I/O installations where heat management plays a critical role.

Channel-Level Diagnostics and Alarming

The 1734-IE4C features sophisticated channel‑level diagnostics. Each channel includes both electronic bits and dedicated LED indicators for status monitoring. Moreover, the module supports channel‑level data alarming with four set‑points per channel. Specifically, you can configure Low, Low Low, High, and High High thresholds for each input. You may also scale the input data to different engineering units, which simplifies integration with various process variables.

Status Indicators

The front panel of the 1734-IE4C includes three types of status indicator lights. The Module Status LED provides information about the power supply detection and overall module health. For instance, a steady green light means the device operates normally. A flashing green light indicates the module needs commissioning due to an incorrect configuration. Meanwhile, a flashing red light signals a recoverable fault. A steady red light indicates a non‑recoverable fault. The Network Status LED shows whether the device is online, online without active connections, or online with active connections. Finally, the Channel Status LED indicates if the module is in CAL mode, normal operation, or out of range.

Installation and Compatibility

For proper operation, you must mount the 1734-IE4C onto a compatible wiring base assembly. Suitable bases include the 1734‑TB, 1734‑TBS, 1734‑TOP, or 1734‑TOPS. Additionally, the module works with the 1734‑TB3 and 1734‑TB3S wiring base assemblies for specific configurations. During installation, set the module's keyswitch to position 3. This correct positioning prevents incorrect insertion and guarantees a secure connection.

The 1734-IE4C grounds via the DIN rail to chassis ground. To ensure proper grounding, you should use DIN rails made of zinc‑plated yellow‑chromate steel. Secure the DIN rail to the mounting surface approximately every 200 millimeters (7.8 inches). Furthermore, use end‑anchors correctly to maintain a stable installation. You can install the module either before or after securing the base. However, always switch off backplane power before inserting or removing the module to avoid electrical arcs.

The 1734-IE4C works with any POINT I/O communication adapter. Therefore, you can integrate it seamlessly with various networks, including ControlNet, DeviceNet, and EtherNet/IP. This module functions particularly well with ControlLogix and CompactLogix controllers. It supports rack‑optimized connections between these controllers and discrete I/O modules in the same chassis. Additionally, it can create direct connections between internet‑capable connection originators and input/output modules.

Mechanical Parameters

The 1734-IE4C has compact dimensions of 56 x 12 x 75.5 mm (2.21 x 0.47 x 2.97 in.) and weighs approximately 36 grams (1.235 oz). Its open‑style enclosure makes it suitable for installation within a larger control cabinet. For wiring input signals, use signal wires with 0.25...2.5 mm² (22...14 AWG) solid or stranded copper wire. The wire should be rated at 100 °C (212 °F) or greater, with 1.2 mm (3/64 in.) insulation.

Packaging List

Your shipment will include:

• One (1) Allen‑Bradley 1734-IE4C Analog Input Module

• One (1) removable terminal block (if ordered with a wiring base)

• Product installation instructions manual

Note: Calibration certificates and warranty information do not come with the package.

Shipping Information

All orders ship using premium express courier services. We primarily use FedEx, UPS, or DHL to ensure fast and reliable delivery worldwide.

Frequently Asked Questions (FAQ)

1. What current ranges does the 1734-IE4C support?
The 1734-IE4C supports both 0...20 mA and 4...20 mA input ranges. You can configure the range via the software based on your application needs.

2. Which terminal base do I need for this module?
This module requires a 1734 series terminal base. Compatible bases include the 1734‑TB, 1734‑TBS, 1734‑TOP, 1734‑TOPS, 1734‑TB3, and 1734‑TB3S.

3. What resolution does the 1734-IE4C provide?
The 1734-IE4C delivers 16‑bit resolution across the 0...21 mA range. This provides a sensitivity of 0.32 μA per count for precise measurement.

4. How many set-points does each channel support?
The 1734-IE4C supports four set‑points per channel. You can configure Low, Low Low, High, and High High thresholds for each input.

5. What do the status indicators on the 1734-IE4C tell me?
The LEDs on the 1734-IE4C provide comprehensive diagnostic information. The Module Status LED indicates power and overall health. The Network Status LED shows the connection state. The Channel Status LED indicates CAL mode, normal operation, or out‑of‑range conditions.