Overview
The Spectrum Controls 1746SC-INI4VI is a 4-channel isolated analog input module designed for Allen-Bradley SLC 500 controller platforms. The 1746sc-INI4vi monitors up to 4 isolated analog current or voltage inputs (selectable by channel). With 750 VDC channel-to-channel isolation built into the module, the INI4VI eliminates the need for expensive, external analog isolation blocks, making it an economical choice for electrically noisy manufacturing and process environments.
Key Features
- Both modules provide 750 Vdc channel-to-channel isolation, which means no electrical crosstalk between channels (resulting in less noise and a high effective resolution)
- You can select different input ranges (for example, 4–20 mA or 1–5 Vdc) independently, by channel, for optimal use of rack space
- 16-bits of resolution for precise analog signal acquisition
- Fully auto-calibrating with on-board ambient temperature compensation, no external reference source required
- Completely configured by ladder register setting for quick and easy replace ability
Technical Specifications
Input capabilities span multiple ranges: 0-10 VDC / +/- 10 VDC / 0-5 VDC / 1-5 VDC, 0-20MA / 4-20 MA. The module delivers 750V DC Channel-to-Channel Isolation and 16 bits Resolution. It also provides 750 Vdc field wiring-to-backplane isolation to protect your processor and other rack components. Module power consumption is 570 MA @ 5 V. The recommended operating temperature for the device is 0 to 60 degrees Celsius, and the storage temperature for the device is -40 to 85 degrees Celsius.
Typical Applications
- Industrial process control and data acquisition in noisy electrical environments
- Analog sensor monitoring (temperature, pressure, flow, level) in manufacturing
- Motion control and machinery automation requiring isolated analog feedback
- Multi-channel sensor integration where crosstalk rejection is critical
Compatibility & Replacements
Compatible With
- Allen-Bradley SLC 500 controller chassis (1746 series)
- RSLogix 500 programming software
- All 1746 PLC rack platforms
Replaces / Drop-In Replacement For
The 1746sc-INO4i and 1746sc-INO4vi modules can replace analog output modules without compromising performance or price. Verify compatibility with your system integrator before ordering to confirm interchangeability with legacy or alternative modules.
Works With
- RSLogix 500 ladder logic programming
- Rack-based configuration and setup
- 1746 backplane communication protocol
