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Description
Overview
Essential details：1746-NI16I 16-bit analog input module
Product Description
The Allen Bradley 1746-NI16I is an Analog Input Module, with 16-bit resolution and 16 input channels. This module falls into a Voltage Category of -20 to 20 mA. Its backplane current at 5 Volts is 125 mA, while 24 Volts results in 75 mA. Its backplane power consumption is 2.425 Watts maximum (0.625 Watts at 5 Volts DC and 1.8 Watts at 24 Volts DC). The common mode voltage range of this module is +/-10.25 Volts relative to the analog common terminal.
This unit has a relative humidity of 5% to 95% without condensation. Its operating temperature range is -25 to 60 degrees Celsius (-13 to 140 degrees Fahrenheit) while its nonoperating temperature lies between -40 and 85 degrees Celsius (-40 and 185 degrees Fahrenheit). Its Input impedance is 249; its maximum voltage input is ±8 Volts between analog common and any input terminal, and the maximum current input is ±30 mA. The thermal dissipation of this module is 2.43 Watts, and the AIFM Connector of this module is 25-pin D-shell. When installing modules in the chassis, it is not necessary to remove the terminal blocks from the module. However, if the terminal block is removed, use the label located next to the terminal block to identify the location and type of module.
Analog inputs are used to interface analog process variables to measure its magnitude. It is primarily used to monitor or used as feedback signal for closed loop control systems to implement manual or automatic control with the use of control methods typically Proportional-Integral-Derivative (PID) algorithm. Without this feedback signal, automatic control cannot be fully implemented.
1746-NI16I
Product parameter
Voltage category:
Input signal range: -20mA to +20mA.
Number of input channels:
16 independent analog input channels.
Resolution:
16-bit resolution for high precision signal measurement.
Signal input type:
The following types of signal input can be accepted: 0~20mA; ±20mA; 4~20mA; 0 to 1mA.
Data conversion:
The input signal can be converted to a variety of data types, including units of work, scale conversions (suitable for PID operations), scale numbers, user-defined scale numbers, and the 1746-NI4 data format.
Electrical parameters:
Backplane current (5V) : 125mA
Backplane current (24V) : 75mA
The backplane consumes the most power: 2.425 watts
Common mode voltage range: +/-10.25 volts relative to analog common terminals
Environmental Conditions:
Operating temperature range: -25 to 60 degrees Celsius
Non-operating temperature range: -40 to 85 degrees Celsius
Relative humidity: 5% to 95% (non-condensing)
APPLICATION
The 1746-NI16I is an analog input module with a wide and diverse range of applications, mainly in industrial automation and control systems. The following are the detailed application areas:
Industrial Automation:
In the field of industrial automation, 1746-NI16I is often used to convert external analog signals (such as temperature, pressure, flow, etc.) into digital signals for communication and processing with PLCS (programmable logic controllers) or other automation equipment. Its high resolution and fast sampling rate ensure accurate signal capture and real-time processing.
For example, in an oilfield water injection automation system, 1746-NI16I is used as an acquisition module to convert analog signals into digital signals during the water injection process to achieve accurate control and monitoring of water injection volume.
Control system:
The 1746-NI16I is suitable for various control systems, such as process control systems, environmental monitoring systems, etc. In these systems, it can convert analog signals acquired by sensors into digital signals for real-time analysis and processing by controllers.
Its multi-channel design enables it to receive multiple analog signals at the same time, which improves the flexibility and scalability of the system.
Digital signal connection and interference processing:
Although the 1746-NI16I mainly deals with analog signals, in practical applications, it may also be connected with digital signals (such as the digital output signal of a PLC). In this case, it is necessary to pay attention to the connection mode of the digital signal and avoid interference.
For example, when connecting the PLC to the inverter, attention should be paid to the grounding method of the PLC, the use of noise filters or isolation transformers and other measures to suppress harmonic interference and ensure the stable operation of the system.
In summary, the 1746-NI16I plays an important role in the field of industrial automation and control systems with its high precision, multi-channel, fast sampling rate and other characteristics. It can convert analog signals to digital signals in real time and accurately, provide support for decision making of control system, improve production efficiency and system stability.
Superiority products 1746-NI16I 16-bit analog input module
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