Allen-Bradley 1794-IR8 FLEX I/O 8-Channel RTD Input Module
- Brand
- Allen-Bradley
- Model
- 1794IR8
- GEARWELL SKU
- GWP-000003642
- Category
- PLCs & I/O
Key specifications
- Nominal supply voltage
- 24 V DC
- Product type
- FLEX I/O eight-channel RTD input module
- Compatible terminal bases
- 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T or 1794-TB3TS.
- Flexbus current
- 20 mA.
- Nominal input resistance range
- 1…433 Ω.
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← Back to productsProduct overview
The Allen-Bradley 1794-IR8 is a FLEX I/O RTD input module with 8 inputs for 2-wire and 3-wire RTDs, such as 100 Ω platinum (0.00385, -200…+870 °C) and 100, 120 or 200 Ω nickel sensors, with 16-bit resolution across 435 Ω. It draws 140 mA at 24V DC and is rated for -20…+55 °C (-4…+131 °F). FLEX I/O modules plug into a terminal base unit that carries the field wiring, so a module can be removed and inserted under power without disturbing field wiring; one FLEX I/O adapter communicates with up to eight I/O modules.
Technical reference
| Product name | Allen-Bradley 1794-IR8 FLEX I/O 8-Channel RTD Input Module |
|---|---|
| Brand | Allen-Bradley |
| Model | 1794IR8 |
| Category | PLCs & I/O |
| Nominal supply voltage | 24 V DC |
| Product type | FLEX I/O eight-channel RTD input module |
| Compatible terminal bases | 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T or 1794-TB3TS. |
| Flexbus current | 20 mA. |
| Nominal input resistance range | 1…433 Ω. |
| Input resolution | 16 bits across 435 Ω. |
| Manufacturer lifecycle status | Active Mature |
| RTD excitation current | 718.36 µA. |
| Temperature Rating | 0…55 °C (32…131 °F) |
| Product description | Eight RTD resistance inputs; channels share a common return. |
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