Product Overview – Allen-Bradley 1734-IE2C
The Allen-Bradley 1734-IE2C is a high-performance analog input module from the POINT I/O series, designed for precise current measurement in industrial automation. This module features two single-ended, non-isolated current input channels, each configurable for 0-20 mA or 4-20 mA signals with 16-bit resolution (0.32 μA/cnt over 0-21 mA). It serves as a drop-in upgrade for older analog input systems, offering enhanced accuracy and compact footprint.
Part of the Rockwell Automation family, the 1734-IE2C integrates seamlessly with any POINT I/O communication adapter, making it ideal for upgrading existing ControlNet, DeviceNet, or EtherNet/IP networks. Its open-style enclosure and wide voltage range (10–28.8 V DC) simplify installation in both new builds and retrofit projects.
Technical Specifications Breakdown
Key performance parameters of the 1734-IE2C ensure reliable data acquisition in demanding environments.
| Parameter |
Value |
| Resolution |
16 bits – over 0...21 mA 0.32 μA/cnt |
| Input Channels |
2 single-ended, non-isolated |
| Input Signal Range |
0-20 mA, 4-20 mA |
| Absolute Accuracy |
0.1% Full Scale @ 25°C |
| Step Response (per channel) |
80 ms @ 50 Hz, 70 ms @ 60 Hz (default), 16 ms @ 250 Hz, 8 ms @ 500 Hz |
| Update Rate per Module |
120 ms @ 50 Hz, 100 ms @ 60 Hz (default), 24 ms @ 250 Hz, 12 ms @ 500 Hz |
| Current Draw |
75 mA @ 5 V DC |
| Power Dissipation |
0.6 W @ 28.8 V DC |
| Dimensions |
56 x 12 x 75.5 mm (2.2 x 0.47 x 2.97 in) |
| Data Format |
Signed Integer |
| Conversion Type |
Delta Sigma |
| Max Overload Fault Protected |
28.8 V DC |
These specs make the 1734-IE2C a robust choice for applications requiring high accuracy and fast response—critical when upgrading from older 12-bit modules.
Real-World Applications
The 1734-IE2C excels in process control, chemical dosing, and flow monitoring where 0-20 mA or 4-20 mA signals are common. For example, replacing a legacy analog input card in a water treatment plant with the 1734-IE2C improves resolution from 12-bit to 16-bit, reducing signal noise and increasing process reliability. In packaging lines, its compact 12 mm width allows high-density I/O installations, saving cabinet space. The module’s fast step response (as low as 8 ms) suits applications with rapid signal changes, like motor current monitoring.
Compatibility & Integration
Designed for the POINT I/O platform, the 1734-IE2C works with any 1734-series communication adapter (e.g., 1734-AENTR for EtherNet/IP, 1734-ADN for DeviceNet, 1734-ACNR for ControlNet). It mounts onto terminal bases 1734-TB, 1734-TBS, 1734-TOP, or 1734-TOPS, and supports both horizontal and vertical DIN-rail mounting. The module is compatible with all Allen-Bradley Logix controllers, including CompactLogix and ControlLogix, making it a versatile upgrade component.
Selection Guide & Purchasing Advice
When selecting the 1734-IE2C, verify your system’s communication adapter type and available voltage (10–28.8 V DC). Ensure you have the correct terminal base (keyswitch position 3) and wiring with 22–14 AWG shielded cable. For a reliable supply of genuine Rockwell Automation parts, choose UBEST Automation (ubest101). We stock the 1734-IE2C and related POINT I/O components, offering fast shipping and technical support to facilitate your upgrade project.