Overview
The Spectrum Controls 1746sc-INI4vi is a 4-channel isolated analog input module designed for integration with SLC 500 controllers. This module monitors up to 4 isolated analog current or voltage inputs (selectable by channel). The module provides 750 Vdc channel-to-channel isolation and 750 Vdc field wiring-to-backplane isolation to protect your processor and other rack components.
Key Features
- You can select different input ranges (for example, 4–20 mA or 1–5 Vdc) independently, by channel, for optimal use of rack space
- 750 Vdc channel-to-channel isolation eliminates electrical crosstalk between channels, resulting in less noise and a high effective resolution
- 16-bits of resolution for precision analog measurement
- Fully auto-calibrating with on-board ambient temperature compensation, no external reference source required
- Provides several selectable input filters to maximize speed and minimize noise
- Performs a battery of diagnostic tests at startup and can alert you to open input circuits through status bits and LEDs
Technical Specifications
The 1746sc-INI4vi delivers industry-standard performance for demanding analog control applications. Input ranges include 0-10 VDC, ±10 VDC, 0-5 VDC, 1-5 VDC, 0-20 mA, and 4-20 mA. The module requires 570 mA at 5V and weighs approximately 0.40 lbs.
Typical Applications
The Spectrum Controls 1746sc-INI4vi excels in electrically noisy industrial environments where signal integrity is critical. Common applications include:
- Process control systems requiring multiple isolated analog inputs
- Motor control and variable frequency drive monitoring
- Temperature and pressure measurement in harsh manufacturing floors
- Data acquisition in multi-channel sensor arrays
- Production equipment with stringent noise immunity requirements
Compatibility & Replacements
Compatible With
- SLC 500 controllers and processor platforms
- 1746 I/O rack systems
- RSLogix 500 and Studio 5000 programming software
- Ladder register configuration and auto-calibration tools
Replaces / Drop-In Replacement For
The 1746sc-INI4vi directly replaces earlier analog input modules in the 1746 SLC 500 family where 4-channel isolated voltage/current input is required. Verify compatibility with your system integrator before ordering.
Works With
- RSLogix 500 programming software
- Studio 5000 Logix Designer
- 1746 SLC 500 backplane and processor modules
- External sensors, transducers, and signal conditioners
- Automation engineering platforms supporting SLC 500 architecture
