1734-IE2C | Allen-Bradley POINT I/O 2-Channel Analog Current Input Module

The 1734-IE2C is a two-channel analog input module from the Allen-Bradley POINT I/O series. It is designed to measure analog current signals in the ranges of 0–20 mA or 4–20 mA, making it suitable for a wide variety of industrial sensing applications. The module uses Delta-Sigma analog-to-digital conversion with a resolution of 16 bits over 0–21 mA, offering high accuracy and stability. It is compact and mounts to a compatible POINT I/O terminal base such as 1734-TB or 1734-TOPS. The module plays a key role in distributed I/O systems with EtherNet/IP, ControlNet, or DeviceNet communications.

The question refers to the 1734-IE2V, which is a voltage analog input module, not the 1734-IE2C, which is designed for current signals. However, both modules are part of the POINT I/O family and use similar LED indicators. A red LED typically signals a fault condition such as an input overrange, open wire, or power issue. While the 1734-IE2C does not have unique LED behaviors compared to IE2V, any red light on a POINT I/O module should be checked through Studio 5000 diagnostics or by verifying wiring and configuration. It's essential to consult the module’s specific user manual for exact LED fault definitions.

The module consumes 75 mA at 5V DC, with a maximum power dissipation of 0.6 Watts at 28.8V DC. It also produces a thermal output of 2.0 BTU/hour, which should be considered when designing enclosures with limited airflow. This efficient power usage enables it to function well in compact systems. The low power draw makes it ideal for dense POINT I/O installations with many modules on a single backplane.

Input update time per module depends on the digital notch filter setting: 100 ms at 60 Hz (default), down to 12 ms at 500 Hz. Similarly, step response per channel ranges from 70 ms to as fast as 8 ms, also filter-dependent. These rates enable fast and flexible performance tuning based on application demands. Faster settings provide better response, while slower filters reduce noise. Configuration is managed through the I/O tree in Studio 5000 software.

Yes, as of current Rockwell Automation documentation, the 1734-IE2C remains actively manufactured and supported. It is part of the modern POINT I/O platform used for scalable distributed I/O systems. While availability can vary by region or distributor, the module is widely used in CompactLogix and ControlLogix architectures. For the most up-to-date status, the Rockwell Product Lifecycle Status tool should be consulted. Long-term support is typically available for critical spares and replacements.