The Allen-Bradley 1746SC-INI4VI is a high-performance, isolated analog input module designed for the SLC 500 controller platform. This module provides four channels of isolated input, allowing for flexible integration of various voltage and current signals in industrial control environments. By providing electrical isolation, this module effectively mitigates ground loop issues and signal interference, ensuring reliable data acquisition in complex automation setups.
Features
Four isolated analog input channels.
Supports multiple voltage ranges: 0-10 VDC, +/- 10 VDC, 0-5 VDC, and 1-5 VDC.
Supports standard current ranges: 0-20 mA and 4-20 mA.
Designed for seamless integration with the Allen-Bradley SLC 500 chassis.
Technical Specifications
Product Model
1746SC-INI4VI
Input Channels
4
Resolution
16-bit
Current Ranges
0-20 mA, 4-20 mA
Voltage Ranges
0-10 VDC, +/- 10 VDC, 0-5 VDC, 1-5 VDC
Backplane Current Draw
570 mA at 5 VDC
Installation Guidelines
Ensure the SLC 500 chassis power is disconnected before installing or removing the module.
Mount the module securely in a compatible SLC 500 I/O slot, ensuring the backplane connector is fully seated.
Use shielded twisted-pair cabling for all analog signal connections to minimize electromagnetic interference (EMI).
Maintain proper grounding practices for the cable shields to prevent noise injection into the analog inputs.
Ensure the operating environment is free from excessive vibration, heat, and corrosive agents to maintain long-term module reliability.
FAQ
What is the primary function of the 1746SC-INI4VI? This module is used to convert analog voltage or current signals from field devices into digital data that the SLC 500 processor can interpret for control logic.
Does this module require external power for the inputs? The module draws power from the SLC 500 backplane (570 mA at 5 VDC); however, ensure that the field devices connected to the inputs are properly powered according to their specific requirements.
Is this module isolated? Yes, the 1746SC-INI4VI provides channel-to-channel and channel-to-backplane isolation to prevent ground loops and protect the PLC system.
