1756-IF8I
Product ID:231008
Updated: 2026/7/14
Key Features
- 11. High Resolution Conversion: The 1756-IF8I boasts a superior 24-bit conversion resolution, ensuring precise measurements in various industrial applications.;
- 22. Isolated Channels: Each of the 8 input channels is isolated, providing a safe and reliable connection to your system, reducing the risk of electrical interference or damage.;
- 33. Versatile Signal Support: This module supports both voltage and current signals, allowing it to interface with a wide range of transmitters and sensors, making it highly versatile.;
- 44. Internal Loop Power: In sourcing current mode, the channel provides loop power, simplifying the setup and reducing the need for external power sources.;
- 55. Enhanced Diagnostic Capabilities: The module includes overvoltage protection, data warnings, and process alerts, ensuring that any issues are quickly detected and addressed, minimizing downtime and improving overall system reliability.
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Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Dimension Unit | CM | Weight Unit | KG |
| Weight | 0.365 | Stock Status | STOCKED |
| Dimension Length | 23.622 | Dimension Width | 18.034 |
| Lead Time | 5 | Dimension Height | 5.588 |
| Quick Turnaround | false | Preferred Availability | true |
| Repairable | REPAIRABLE | Enclosure type rating | None (open-style) |
| IEC temperature code | T4 | Isolation voltage | 250V (continuous), reinforced insulation type, inputs to backplane, 250V (continuous), basic insulation type, input to input |
| Input impedance | Voltage mode: 1 G? approximately (powered), Voltage mode: 7500 ? approximately (unpowered), Current mode: 125 ? approximately | Slot width | 1 None |
| Shock | Operating: 30 G, Non operating: 50 G | Vibration | 2 G @ 10...500 Hz |
| RTB keying | User-defined mechanical | Nonoperating temperature | -40 °C |
| Radiated RF immunity | 10 V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10 V/m with 200 Hz 50% pulse 100% AM @ 900 MHz, 10 V/m with 200 Hz 50% pulse 100% AM @ 1890 MHz, 3 V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz | Operating temperature | 0 to 60 °C |
| Surge transient immunity | ±2 kV line-earth (CM) on shielded signal ports | Conducted RF immunity | 10V rms with 1 kHz sine wave 80% AM from 150 kHz...80 MHz on shielded signal ports |
| Relative humidity | 5...95% noncondensing | EFT/B immunity | ±4kV @ 5kHz on shielded signal ports |
| ESD immunity | 6 kV contact discharges, 8 kV air discharges | Emissions | IEC 61000-6-4 |
| North American temperature code | T4 | Surrounding air temperature, max | 60 °C |
| Sourcing current, max | Current limited <45 mA (IN_x/I/SRC to RTN_x) | Sourcing voltage, max | 36V DC (open circuit) |
| Sourcing voltage, min | 20V DC | Real-time channel sampling | True |
| Scaling to engineering units | True | Onboard data alarming | True |
| Suitable for safety functions | False | Open circuit detection time | 5 s |
| Calibrated accuracy | 0.05% @ 25°C (77 °F) | Wire size | 0.33...2.1 mm2 (22...14 AWG) solid or stranded shielded copper wire rated at 90 °C (194 °F), or greater, 1.2 mm (3/64 in.) insulation maximum |
| Resolution | 24 bit, ±10.5V (1.49 μV/count), 0...10.5V (1.49 μV/count), 0...5.25V (1.49 μV/count), 0...21 mA (2.99 nA/count) | Power dissipation | Voltage mode: 4.6 W (15.7 BTU/hr), Non-sourcing current mode: 5.1 W (17.4 BTU/hr), Sourcing current mode: 7.3 W (24.9 BTU/hr) |
| Inputs | Eight isolated channels - any combination of voltage or current mode | Current draw | 200mA @ 5.1V, Voltage/Non-sourcing current mode: 150mA @ 24V, Sourcing current mode: 400mA @ 24V (In sourcing current mode, the channel provides loop power.) |
| Thermal dissipation | Voltage mode: 15.7 BTU/hr, Non-sourcing current mode: 17.4 BTU/hr, Sourcing current mode: 24.9 BTU/hr | Total backplane power | Voltage/Non-sourcing current mode: 4.6 W, Sourcing current mode: 10.6 W |
| Settling time | Notch Filter configuration dependent | Voltage and current ratings | Backplane: 5.1V DC 200mA @ 24V DC 400 mA, Input voltage: -10V to +10V @ 0V to 10V @ 0V to 5V, Input current: 0 mA to 20 mA, Output current: 0 mA to 20 mA |
| Module input scan time, min | 1 ms | Normal mode noise rejection | 80 dB @ 60 Hz |
| Common mode noise rejection | 120 dB @ 50/60 Hz | Overvoltage protection | ±30V DC maximum |
| Wire category | 2 - on signal ports | Data format | IEEE 32-bit floating point |
| Input range | -10...10V, 0â¦10V @ 0...5V, 0...20 mA | Module conversion method | Sigma-Delta |
| Module error over full temperature range | 0.1 % | Module keying | Electronic, software configurable |
| Channel bandwidth | Notch Filter configuration dependent | Type of electric connection | Screw-/spring clA connection |
| Analogue outputs configurable | False | Analogue inputs configurable | True |
| Output signal configurable | False | Output, voltage | False |
| Output, current | False | Input signal, configurable | True |
| Input, thermocouple | False | Input, resistance thermometer | False |
| Input, resistor | False | Input, voltage | True |
| Input, current | True |
Specifications may be subject to change without notice
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