Overview
The Modicon AS-B875-002 is a proven 8-channel differential analog input module for legacy and modern Modicon Quantum PLC systems. Built for industrial-grade signal conditioning, this module converts analog sensor inputs (4-20mA current loops and 1-5V signals) into digital values for process monitoring, control, and diagnostics. Widely deployed in manufacturing, utilities, and process automation environments.
Key Features
- 8 differential analog input channels with software-selectable input ranges
- Dual input range support: 4-20mA current loop and 1-5V DC voltage
- High noise rejection and signal conditioning for industrial environments
- Hot-swappable plug-in module design for minimal downtime
- Compatible with Modicon Quantum 800 series I/O platforms
- Supports legacy and modernization scenarios with BMXAMI0810 converters
Technical Specifications
- Input Channels: 8 differential channels
- Input Ranges: 4-20mA (selectable per channel), 1-5V DC (selectable per channel)
- Resolution: 12-bit (per Modicon Quantum specifications)
- Module Type: Analog Input (B800 series plug-in)
- Communication: Quantum 800 I/O backplane connection
- Operating Temperature: 0–60°C (32–140°F)
- Mounting: Vertical rail or DIN-mount with I/O adapter
- Certifications: CE, RoHS compliant
Typical Applications
- Temperature and pressure monitoring in process plants
- Analog sensor signal acquisition in manufacturing control systems
- Flow meter and transmitter integration
- Legacy Quantum PLC system upgrades and expansions
- Distributed I/O nodes for remote facility monitoring
- Motor speed feedback and load cell signal conditioning
Compatibility & Replacements
Compatible With
- Modicon Quantum 800 series PLCs and I/O platforms
- Modicon Automation platforms (Momentum, legacy 984 series with adapters)
- Schneider Electric (Modicon is now owned by Schneider Electric)
- Modicon X80 distributed I/O architecture
- Unity Pro and Legacy Modicon programming environments
Replaces / Drop-In Replacement For
- AS-B875-001 (in some legacy configurations with software revision changes)
- Earlier B875 revision modules (verify firmware compatibility)
- Custom current loop input cards in retrofit applications
Works With
- Modicon Unity Pro software (configuration and diagnostics)
- BMXAMI0810 modernization converter for Schneider M580 migration
- Modicon Automation Coupler (MAC) networking
- Ethernet for legacy connectivity via gateways
- 4-20mA current loop transmitters and RTD/thermocouple signal conditioners
