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1756-IRT8I | Allen-Bradley ControlLogix 8-Channel Isolated RTD/Thermocouple/mV Input Module
- Regular price
- $2,185.00
- Sale price
- $2,185.00
- Regular price
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Product Description P/N: 1756-IRT8I
Description
The Allen-Bradley 1756-IRT8I is a high-resolution analog input module designed for temperature and low-level signal measurement in ControlLogix systems. Equipped with eight individually isolated channels, it supports RTD, thermocouple, and millivolt input types with 24-bit conversion for precise data acquisition. The 1756-IRT8I offers multiple sensor compatibility, advanced diagnostics, and flexible configuration options for demanding process monitoring applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | Analog Input Module |
| Part Number | 1756-IRT8I |
| Subcategory | Analog Input Module |
| Series | ControlLogix |
| Module Type | RTD / Thermocouple / Millivolt Input Module |
| Number of Inputs | 8 isolated channels |
| Input Compatibility | RTD, Thermocouple, mV |
| RTD Types Supported | Pt 100/200/500/1000 (α=385, α=3916), Ni 100/120/200/500 (α=672, α=618), Cu 10 Ω |
| Thermocouple Types | B, C, D, E, J, K, N, R, S, T, L (TXK/XK) |
| Input Ranges | 1–500 Ω, 2–1000 Ω, 4–2000 Ω, 8–4000 Ω, –100…100 mV |
| Resolution | 24-bit (0.06–0.50 mΩ/count depending on range; 0.01 µV/count for mV) |
| Data Format | IEEE 32-bit floating point |
| Module Scan Time | 1 ms |
| CJC Sensors | Integrated; ±0.3 °C accuracy |
| Backplane Current (5 VDC) | 250 mA |
| Backplane Current (24 VDC) | 150 mA |
| Power Dissipation | 4.6 W max |
| Thermal Dissipation | 15.7 BTU/hr |
| Isolation Voltage | 250 V continuous |
| Open Circuit Detection | 2–5 seconds depending on sensor type |
| Noise Rejection | 75 dB normal mode @ 60 Hz; 125–160 dB common mode |
| Terminal Block Options | 1756-TBNH, 1756-TBS6H |
| Manufacturer | Rockwell Automation |
Information About 1756-IRT8I
The 1756-IRT8I belongs to the ControlLogix analog family and provides isolated measurement channels capable of reading resistance, voltage, and temperature inputs. Using sigma-delta conversion, the module delivers 32-bit floating-point output data with selectable ranges, filtering, and engineering units. Compatibility includes a wide range of RTD elements, all major thermocouple standards, and ±100 mV millivolt signals. The module features cold-junction compensation, synchronized sampling, wire-off detection, and under/over-range alarms for robust process integrity. With built-in isolation, a 1 ms scan time, and support for 1756-TBNH or 1756-TBS6H terminal blocks, the 1756-IRT8I is well suited for precision temperature control, monitoring, and analytics applications.
Key Features
- Eight Isolated Channels: Individually isolated RTD, thermocouple, or mV inputs for high-accuracy sensing.
- Wide Sensor Compatibility: Supports platinum, nickel, and copper RTDs plus B, C, D, E, J, K, N, R, S, T, and L (TXK/XK) thermocouples.
- High-Resolution Conversion: 24-bit sigma-delta ADC producing IEEE 32-bit floating-point data.
- Multiple Input Ranges: Configurable resistance ranges up to 4000 Ω and ±100 mV signal inputs.
- Advanced Diagnostics: Includes open-circuit detection, alarms, filtering, and lead-resistance calibration.
- Cold Junction Compensation: Integrated CJC sensors with ±0.3 °C accuracy.
- Fast Module Scan Time: 1 ms update for responsive temperature and mV measurement.
- Robust Electrical Isolation: 250 V continuous isolation for safe and reliable industrial operation.
The 1756-IRT8I delivers the reliability and precision required for advanced temperature and low-level signal measurement in ControlLogix automation systems.
Description
The Allen-Bradley 1756-IRT8I is a high-resolution analog input module designed for temperature and low-level signal measurement in ControlLogix systems. Equipped with eight individually isolated channels, it supports RTD, thermocouple, and millivolt input types with 24-bit conversion for precise data acquisition. The 1756-IRT8I offers multiple sensor compatibility, advanced diagnostics, and flexible configuration options for demanding process monitoring applications.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | Analog Input Module |
| Part Number | 1756-IRT8I |
| Subcategory | Analog Input Module |
| Series | ControlLogix |
| Module Type | RTD / Thermocouple / Millivolt Input Module |
| Number of Inputs | 8 isolated channels |
| Input Compatibility | RTD, Thermocouple, mV |
| RTD Types Supported | Pt 100/200/500/1000 (α=385, α=3916), Ni 100/120/200/500 (α=672, α=618), Cu 10 Ω |
| Thermocouple Types | B, C, D, E, J, K, N, R, S, T, L (TXK/XK) |
| Input Ranges | 1–500 Ω, 2–1000 Ω, 4–2000 Ω, 8–4000 Ω, –100…100 mV |
| Resolution | 24-bit (0.06–0.50 mΩ/count depending on range; 0.01 µV/count for mV) |
| Data Format | IEEE 32-bit floating point |
| Module Scan Time | 1 ms |
| CJC Sensors | Integrated; ±0.3 °C accuracy |
| Backplane Current (5 VDC) | 250 mA |
| Backplane Current (24 VDC) | 150 mA |
| Power Dissipation | 4.6 W max |
| Thermal Dissipation | 15.7 BTU/hr |
| Isolation Voltage | 250 V continuous |
| Open Circuit Detection | 2–5 seconds depending on sensor type |
| Noise Rejection | 75 dB normal mode @ 60 Hz; 125–160 dB common mode |
| Terminal Block Options | 1756-TBNH, 1756-TBS6H |
| Manufacturer | Rockwell Automation |
Information About 1756-IRT8I
The 1756-IRT8I belongs to the ControlLogix analog family and provides isolated measurement channels capable of reading resistance, voltage, and temperature inputs. Using sigma-delta conversion, the module delivers 32-bit floating-point output data with selectable ranges, filtering, and engineering units. Compatibility includes a wide range of RTD elements, all major thermocouple standards, and ±100 mV millivolt signals. The module features cold-junction compensation, synchronized sampling, wire-off detection, and under/over-range alarms for robust process integrity. With built-in isolation, a 1 ms scan time, and support for 1756-TBNH or 1756-TBS6H terminal blocks, the 1756-IRT8I is well suited for precision temperature control, monitoring, and analytics applications.
Key Features
- Eight Isolated Channels: Individually isolated RTD, thermocouple, or mV inputs for high-accuracy sensing.
- Wide Sensor Compatibility: Supports platinum, nickel, and copper RTDs plus B, C, D, E, J, K, N, R, S, T, and L (TXK/XK) thermocouples.
- High-Resolution Conversion: 24-bit sigma-delta ADC producing IEEE 32-bit floating-point data.
- Multiple Input Ranges: Configurable resistance ranges up to 4000 Ω and ±100 mV signal inputs.
- Advanced Diagnostics: Includes open-circuit detection, alarms, filtering, and lead-resistance calibration.
- Cold Junction Compensation: Integrated CJC sensors with ±0.3 °C accuracy.
- Fast Module Scan Time: 1 ms update for responsive temperature and mV measurement.
- Robust Electrical Isolation: 250 V continuous isolation for safe and reliable industrial operation.
The 1756-IRT8I delivers the reliability and precision required for advanced temperature and low-level signal measurement in ControlLogix automation systems.