The Allen-Bradley 1746-NI8 is a high-performance analog I/O module designed for the SLC 500 system, featuring eight selectable channels that support either voltage or current inputs. Each channel accommodates a range of input signals, including 10V DC, 0–10V DC, 0–20 mA, and 4–20 mA, delivering precision and fast conversion ideal for time-sensitive applications. With an isolated backplane, programmable low-pass digital filters, and continuous autocalibration, this module ensures robust and accurate data acquisition, while its removable terminal block facilitates straightforward installation and maintenance.
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Technical specifications for 1746-NI8
| Manufacturer | Rockwell Automation |
|---|---|
| Brand | Allen-Bradley |
| Part Number/Catalog No. | 1746-NI8 |
| Series | SLC 500 |
| Module Type | Analog I/O Module |
| Backplane Current (5 Volts) | 200 milliamps |
| Inputs | 1746-NI4 |
| Backplane Current (24 Volts DC) | 100 milliamps |
| Input signal Category | -20 to +20 mA (or) -10 to +10V dc |
| Bandwidth | 1-75 Hertz |
| Input Filter Frequencies | 1 Hz, 2 Hz, 5 Hz, 10 Hz, 20 Hz, 50 Hz, 75 Hz |
| Update Time | 6 milliseconds |
| Chassis location | Any I/O module slot except slot 0 |
| Resolution | 16 bits |
| Backplane Current | (5 Volts) 200 mA;(24 Volts DC) 100 mA |
| Step Response | 0.75-730 milliseconds |
| Conversion type | Successive approximation, switched capacitor |
| Applications | Combination 120 Volts AC I/O |
| Input Types, Voltage | 10V dc 1-5V dc 0-5V dc 0-10V dc |
| Backplane Power Consumption | 14 Watts Maximum |
| Input Type, Current | 0-20 mA 4-20 mA 20 mA 0-1 mA |
| Input Impedance | 250 Ohms |
| Data Format | Engineering Units Scaled for PID Proportional Counts (-32,768 to +32,767 range), Proportional Counts (User Defined Range, Class 3 only). 1746-NI4 Data Form |
| Cable | 1492-ACABLE*C |
| LED Indicators | 9 green status indicators one for each of 8 channels and one for module status |
| Thermal Dissipation | 3.4 Watts |
| Wire Size | 14 AWG |
| UPC | 10662072678036 |
| UNSPSC | 32151705 |
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