The Allen-Bradley 1746-NIO4I is a high-performance analog combination module designed for the SLC 500 programmable controller platform. This module integrates both analog input and output capabilities, providing a versatile solution for process control applications requiring precise monitoring and signal regulation.
Features
Integrated I/O: Features 2 analog inputs and 2 analog outputs in a single-slot module.
High Resolution: Offers 16-bit resolution for inputs and 14-bit resolution for outputs to ensure accurate data conversion.
Flexible Signal Ranges: Supports input signal ranges of -20 to +20 mA and -10 to +10V DC.
Efficient Processing: Provides a 10 Hz bandwidth and rapid 512-microsecond update time for real-time control.
Compact Design: Designed for standard SLC 500 chassis mounting, minimizing rack space requirements.
Technical Specifications
Product Model
1746-NIO4I
Module Type
Analog Combination Module
Backplane Current (5V)
55 mA
Backplane Current (24V)
145 mA
Input Resolution
16 bits
Output Resolution
14 bits
Bandwidth
10 Hz
Update Time
512 microseconds
Input Step Response
60 milliseconds
Output Step Response
2.5 milliseconds
Installation Guidelines
Ensure the SLC 500 chassis power is disconnected before installing or removing the module to prevent electrical damage.
Verify that the module is properly seated in the backplane slot and secured with the retaining screws.
Use shielded twisted-pair cabling for analog signals to minimize electromagnetic interference (EMI) and noise.
Route signal wires away from high-voltage power lines and inductive loads.
Maintain proper grounding practices for the chassis to ensure signal integrity and system safety.
FAQ
What is the primary function of the 1746-NIO4I? This is an analog combination module for the Allen-Bradley SLC 500 series, used to interface field devices that require analog voltage or current signals for both input sensing and output control.
Does this module require external power? The module draws its power directly from the SLC 500 backplane (5V and 24V), eliminating the need for external power supplies for the module itself.
