|
Backplane Current |
2.9 Amperes |
|
Data Format |
BDC or Natural Binary |
|
Typical AC Signal Delay (Off) |
45 (+/- 15) ms |
|
Typical DC Signal Delay (Off) |
50 ms |
|
Wiring Arm |
1771-WH |
|
Mounting |
Rack Mountable |
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sales Manager：Miya
E-mail: sales@amikon.cn
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Overview
The Allen-Bradley 1771-NIS is a high-resolution analog current input module designed for PLC-3, PLC-5, and PLC-5/250 control systems. The module provides 8 analog current input channels and supports 4–20 mA signal processing for industrial monitoring and process automation applications. With built-in loop power capability, the 1771-NIS can directly power 2-wire transmitters, reducing the need for external power supplies and simplifying field wiring. Its high-accuracy analog conversion and strong noise immunity make it suitable for demanding industrial environments.
Details
|
Manufacturer |
Allen Bradley |
|
Category |
PLCs |
|
Product Line |
PLC 5 |
|
Part Number |
1771-NIS |
|
UPC |
612598122158 |
|
Weight |
17.06 lbs (7.74 kg) |
|
Module Type |
N-Series Analog I/O Module |
|
Number of Inputs |
8 Inputs |
|
Input Types |
Current |
|
Input Resolution |
4-20 Miliamperes (0.34 Microamperes/bit) (Module Suppllies Loop Power) |
|
Number of Outputs |
0 Outputs |
|
Output Type |
N/A |
|
Output Resolution |
N/A |
|
RTP Choice |
1771-RTP4 |
Main Features
Ø 8-channel high-resolution analog current input module.
Ø Supports 4–20 mA analog current signal inputs.
Ø Built-in loop power supply supports 2-wire transmitters directly.
Ø Compatible with PLC-3, PLC-5, and PLC-5/250 systems.
Ø High-accuracy 16-bit analog conversion improves signal precision.
Ø Strong common-mode and normal-mode noise rejection capability.
Ø Supports BCD and natural binary data formats.
Ø Built-in over-range and under-range detection functions.
Ø Rack-mounted modular design for easy installation and maintenance.
Ø Industrial-grade construction ensures reliable long-term operation.
FAQ
Q: What is the Allen-Bradley 1771-NIS used for?
A: The 1771-NIS is used for industrial analog signal acquisition and monitoring applications, especially for 4–20 mA process instrumentation signals.
Q: How many input channels does the 1771-NIS support?
A: The module provides 8 analog current input channels for industrial process monitoring.
Q: Does the 1771-NIS provide loop power?
A: Yes, the module includes internal loop power capability for powering connected 2-wire transmitters directly.
Q: What are the key advantages of the 1771-NIS?
A: Key advantages include high analog accuracy, simplified wiring, strong anti-interference performance, reliable operation, and compatibility with legacy PLC-5 systems.
Q: Is the 1771-NIS still available from Rockwell Automation?
A: No, the 1771-NIS has been discontinued by Rockwell Automation, but replacement and repair services are still available in the industrial automation market.
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