Allen Bradley's 1746-NIO4I Analog I/O Module - High Resolution, 2 Ch. Analog Input, 2 Ch. Analog Current Output, -20…+20 mA (or) -10…+10V dc (Inputs) 0…20 mA (Outputs)
1746-NIO4I
1746-NIO4I
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Introduction
1746-NIO4I is orderable as:1746-NIO4I
Allen Bradley's 1746-NIO4I Analog I/O Module is a High Resolution 2 Channel Analog Input, 2 Channel Analog Current Output I/O Module with voltage category: -20…+20 mA (or) -10…+10V dc (Inputs) 0…20 mA (Outputs).
The 1746-NIO4I's input channels are filtered to reject high frequency noise and provide 14- to 16-bit (range-dependent) resolution. It also provides 14-bit resolution and a 2.5 ms conversion rate.
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Quick Specs
| Module Type | Analog I/O |
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Full Product Specifications
Download Datasheet| Backplane Current (mA) at 24V | 145mA |
| Backplane Current (mA) at 5V | 55mA |
| Backplane Isolation | 500V ac and 710V dc withstand for 1 minute |
| Conversion Method | sigma-delta modulation |
| Conversion Time | N/A |
| Converter Resolution | 16 bit |
| Current Loop Absolute Max Input Voltage | ±7.5V dc or 7.5V ac RMS |
| Current Loop Current Input Coding | ±16,384 for ±20mA |
| Current Loop Full Scale | 20mA |
| Current Loop Gain Error at 25ºC (77ºF) | +0.323% (max) |
| Current Loop Gain Error Drift | ±67 ppm/ºC |
| Current Loop Gain Error, 0...60ºC (32...140ºF) | +0.556% (max) |
| Current Loop Input Impedance | 250 Ohms (nominal) |
| Current Loop Input Range | ±20mA (nominal), ±30mA (max) |
| Current Loop Overall Accuracy at 25ºC (77ºF) | ±0.365% of full scale |
| Current Loop Overall Accuracy Drift | +79 ppm/ºC of full scale |
| Current Loop Overall Accuracy, 0...60ºC (32...140ºF) | ±0.642% of full scale (max) |
| Current Loop Resolution | 1.22070 µA per LSB |
| Module Throughput Delay | 512 micro seconds(nominal) |
| Number of Inputs | 2 |
| Number of Outputs | 4 |
| Output Coding | 0...32, 764 for 0...21 mA |
| Output Conversion Method | R-2R ladder |
| Output Converter Resolution | 14-bit |
| Output Full Scale | 21 mA |
| Output Gain Error at 25ºC (77ºF) | ±298% of full scale |
| Output Gain Error Drif (max) | ±62 ppm/ºC of full scale |
| Output Gain Error, 0...60ºC (32...140ºF) | ±516% of full scale |
| Output Isolation Voltage | Tested at 500V ac and 710V dc for 60 seconds |
| Output Load Current (max) | N/A |
| Output Load Range | 0...500 Ohms |
| Output Overall Accuracy at 25ºC (77ºF) | ±0.298% of full scale |
| Output Overall Accuracy Drift (max) | ±70 ppm/ºC of full scale |
| Output Overall Accuracy, 0...60ºC (32...140ºF) | ±0.541% of full scale |
| Output Over-range Capability | 5% (0...21 mA -1 LSB) |
| Output Range (normal) | 0...20 mA -1 LSB |
| Output Resolution (per LSB) | 2.56348 µA |
| Output Step Response | 2.5ms (5...95%) |
| Step Response | 60ms |
| Voltage Input Full Scale | 10V dc |
| Voltage Input Gain Error at 25ºC (77ºF) | +0.263% (max) |
| Voltage Input Gain Error Drift | ±57ppm/ºC |
| Voltage Input Gain Error, 0...60ºC (32...140ºF) | +0.461% (max) |
| Voltage Input Input Impedance | 1 MOhm |
| Voltage Input Input Range | ±10V dc -1 LSB |
| Voltage Input Overall Accuracy at 25ºC (77ºF) | ±0.284% of full scale |
| Voltage Input Overall Accuracy Drift (max) | +63 ppm/ºC of full scale (max) |
| Voltage Input Overall Accuracy, 0...60ºC (32...140ºF) | ±0.504% of full scale |
| Voltage Input Overvoltage Protection (IN+ to -IN) | 220V dc or ac RMS continuously |
| Voltage Input Resolution | 305.176 µV per LSB |
| Voltage Input Voltage Input Coding | -32,768...+32,767 for +10V dc |
