Product Description
The Allen-Bradley 1734-IT2I is a POINT I/O analog temperature input module from Rockwell Automation's Bulletin 1734 modular I/O platform. It provides two differential, individually isolated thermocouple (and millivolt) input channels for high-accuracy temperature measurement across a wide range of thermocouple types including J, K, T, E, R, S, N, B, and C. The module mounts on DIN rail via the required 1734-TBCJC wiring base assembly and integrates seamlessly into distributed POINT I/O architectures supporting EtherNet/IP, ControlNet, DeviceNet, and PROFIBUS adapters.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Allen-Bradley |
| Model / Part Number | 1734-IT2I |
| Manufacturer | Rockwell Automation |
| Platform / Product Line | POINT I/O (Bulletin 1734) |
| Module Type | Analog Temperature / Thermocouple Input Module |
| Analog/Digital | Analog |
| Communication Standard | EtherNet/IP, ControlNet, DeviceNet, PROFIBUS |
| Number of Inputs | 2 Differential, Individually Isolated |
| Supported Sensor Types | J, K, T, E, R, S, N, B, C Thermocouples; ±75 mV Millivolt Input |
| Input Signal Range | ±75 mV |
| Resolution | 15 Bits + Sign (2.5 µV/count) |
| Conversion Type | Delta-Sigma |
| Data Format | Signed Integer |
| Output Data Size | 8 Bytes Input Data |
| Temperature Scales | °C, °F, Kelvin, Rankine, mV (custom) |
| Absolute Accuracy | 0.1% Full Scale @ 25°C (77°F) |
| Accuracy Drift with Temp | 30 ppm/°C |
| Input Impedance | 100 kΩ |
| Input Resistance | 1 MΩ |
| Common Mode Rejection Ratio | 120 dB |
| Normal Mode Rejection Ratio | -60 dB |
| Input Step Response | 60 ms @ 50 Hz Notch; 6 ms @ 480 Hz Notch |
| Open-Wire Detection | Yes |
| Alarm Types | Under-range, Over-range, CJC Open-wire, Level (HH/H/L/LL) |
| Power Supply | 24V DC (POINTbus Powered) |
| POINTBus Current (max) | 175 mA @ 5V DC |
| Power Dissipation (max) | 1.0 W |
| Thermal Dissipation (max) | 3.3 BTU/hr |
| Isolation Voltage | 50V Continuous (Basic Insulation), I/O to System; Tested @ 1600V AC for 60 s |
| Cold Junction Compensation | Included in 1734-TBCJC terminal base; Range: 0–70°C (32–158°F) |
| Compatible Terminal Base | 1734-TBCJC (required) |
| Compatible Terminal Bases (alt) | 1734-TB, 1734-TBS, 1734-TOP, 1734-TOPS |
| Keyswitch Position | 6 |
| Enclosure Type | None (Open-Style) |
| Mounting | DIN Rail |
| Operating Temperature | -20 to 55°C (-4 to 131°F) |
| Wire Range | 22–14 AWG Solid/Stranded Copper |
| Dimensions (L × W × H) | 75.5 mm × 12.0 mm × 56.6 mm (2.97 in × 0.47 in × 2.21 in) |
| Status Indicators | 1 Network Status (Green/Red), 1 Module Status (Green/Red), 2 Input Status (Green/Red) |
| Configuration Software | Studio 5000 Logix Designer |
| Certifications | CE (EMC), CE-ATEX, C-UL, UL, C-Tick, GOST-R, KCC, ABS Marine, BVS Marine |
| Series | See label |
We warranty all items for 30 days from date of purchase.
Other Details
We warranty all items for 30 days from date of purchase. If you experience any issues with your item within this period, please contact us and we will work with you to resolve the problem. This warranty covers defects in functionality but does not cover damage caused by misuse, improper installation, or normal wear and tear.Product Videos
Custom Field
GTIN 679523686161
Sensor Type J, K, T, E, R, S, N, B, C Thermocouples; Millivolt
Country/Region of Manufacture Singapore
Dimensions 75.5 mm × 12.0 mm × 56.6 mm
FW Revision See label
Firmware Revision See label
Current 175 mA @ 5V DC
Ratio Differential, Individually Isolated
Manufacturer Allen-Bradley
Version Delta-Sigma
Enclosure Type None (Open-Style)
Part Number 1734-IT21
Controller Platform POINT I/O
Series See label
Shelf F3-TUB 11
Model 1734-IT21
MPN 1734-IT21
Voltage 24VDC
Type PLC I/O Module
