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The 1769-NGA8 is an advanced analog input module manufactured by Allen Bradley, part of the CompactLogix series. This module supports a voltage input range of ±10 V DC and allows for current inputs of 0-20 mA DC across eight channels, providing versatile data acquisition capabilities.
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| Manufacturer | Allen Bradley |
|---|---|
| Product Type | Analog Input Module |
| Product Line | CompactLogix |
| Part Number | 1769-NGA8 |
| Weight | 0.13 lbs (0.06 kg) |
| Backplane Current Draw | 120 mA at 5 V DC |
| Number of Channels | 8 Channels |
| Input Type | Analog (Voltage/Current selectable) |
| Voltage Input Range | ±10 V DC |
| Current Input | 0–20 mA DC |
| Resolution | 16-bit |
| Conversion Type | Delta-Sigma |
| Conversion Rate | 250 µs per channel |
| Input Impedance (Voltage) | >1 MΩ |
| Input Impedance (Current) | 250 Ω |
| Accuracy | ±0.1% full scale |
| Common Mode Rejection | 100 dB at 50/60 Hz |
| Isolation Voltage | 750 V AC (continuous) |
The 1769-NGA8 from Allen Bradley functions as an analog input module, crucial for gathering analog signals in control applications. With the ability to draw 120 mA from the backplane at a voltage of 5 V DC, it is designed to accommodate up to eight channels, allowing for simultaneous processing. Users have the option to select between voltage (-10 to +10 V DC) or current (0 to 20 mA DC) inputs, enhancing its adaptability to various system requirements.
This device provides a 16-bit resolution ensuring high fidelity in measurements. With a delta-sigma conversion type, it achieves a conversion rate of 250 microseconds for each channel, ensuring timely data updates. The voltage input impedance is greater than 1 MΩ, making it suitable for high impedance sources, while the current input has an impedance of 250 Ω.
The accuracy specification of ±0.1% full scale ensures that this module delivers reliable data essential for precise control processes. Furthermore, it features a commendable common mode rejection capability of 100 dB at 50/60 Hz, enhancing signal integrity in noisy environments. To protect internal components during operation, the module is rated with an isolation voltage of 750 V AC continuously, making it reliable for various applications in industrial settings.
| Revision Part # | Also known as | |
|---|---|---|
| 1769-NGA8 Ser A | 1769-NGA8/A, Series A, Rev A | |
| Don't see your particular revision? Contact us now. | ||
Allen-Bradley 1769-NGA8 Compact Logix | 8 Input-output-configuration word asic.