Phoenix MINI MCR-SL Series: Compact Signal Conditioning Modules - Selection Guide 

Product Overview

The Phoenix MINI MCR-SL Series consists of compact, DIN-rail mountable signal conditioning modules designed for industrial automation systems. Focused on signal isolation, conversion, amplification, NAMUR sensor integration, and multiplexing, these modules ensure reliable signal processing between field devices (sensors, actuators) and control systems (PLC/DCS). With a ultra-compact 6.2mm width (single-channel), universal 24V DC power supply, and options for standard (non-SP) or pluggable (SP) terminals, they excel in space-constrained control cabinets. Compliant with industrial standards (EN 61010-1) and featuring robust isolation (up to 3kV), the series is ideal for process automation, machine control, and critical applications requiring noise-free, precise signal transmission.

Model Quick Reference Table

Core Technical Specifications (Universal)

Application Scenarios & Recommended Models

1. Signal Isolation & Amplification (Noise Reduction)

• Requirement: Isolate interference between field sensors and PLC/DCS
• Recommended Models: 2810230 (RPSS-I-I-SP, precision), 2864752 (RPS-I-I-SP, pluggable)
• Key Reason: 3kV isolation eliminates ground loops; SP models simplify wiring maintenance in large systems

2. Current-to-Voltage Conversion

• Requirement: Convert 4-20mA/0-20mA sensor signals to 0-10V for voltage-input controllers
• Recommended Models: 2813567 (I-U-4-SP, 4-20mA), 2813554 (I-U-0-SP, 0-20mA)
• Key Reason: ≤±0.1% accuracy ensures precise signal conversion; pluggable terminals save wiring time

3. NAMUR Sensor Integration

• Requirement: Monitor NAMUR proximity switches and trigger relay outputs
• Recommended Model: 2864105 (MINI MCR-SL-NAM-2RNO)
• Key Reason: 2-channel NAMUR input + 2NO relay outputs directly link sensors to load control

4. Potential Transformer (PT) Signal Conversion

• Requirement: Convert PT voltage signals for industrial control systems
• Recommended Models: 2864147 (PTB-SP, pluggable), 2902958 (PTB-FM, frequency-compatible)
• Key Reason: PT-specific signal conditioning; FM variant fits frequency-dependent applications

5. Multi-Channel Signal Multiplexing

• Requirement: Reduce PLC I/O modules by multiplexing 8 analog signals
• Recommended Model: 2811815 (MINI MCR-SL-MUX-V8-FLK 16)
• Key Reason: 8-channel input + FLK16 interface simplifies integration with control systems

Core Advantages

• Ultra-Compact Design: 6.2mm width (single-channel) maximizes space in dense control cabinets
• Flexible Terminals: Pluggable (SP) and fixed terminal options balance maintenance ease and cost-efficiency
• High Isolation Performance: 3kV isolation eliminates electromagnetic interference (EMI) in industrial environments
• Precise Signal Processing: ≤±0.1% conversion accuracy ensures reliable data for critical control
• Universal Compatibility: Supports 4-20mA/0-20mA/0-10V/NAMUR signals for diverse sensors/controllers
• Easy Installation: DIN rail mounting and low power consumption (≤0.5W/channel) simplify deployment
• Robust Industrial Grade: -25℃~70℃ operating temperature and EN 61010-1 certification ensure durability

Installation & Usage Notes

• Voltage Matching: Ensure supply voltage is 24V DC (19.2~30V DC); avoid reverse polarity (built-in protection)
• Terminal Selection: Choose SP models for systems requiring frequent wiring changes; fixed terminals for cost-sensitive setups
• Signal Matching: Select current-to-voltage models based on sensor output (4-20mA → I-U-4; 0-20mA → I-U-0)
• Mounting Spacing: Reserve ≥3mm between modules for heat dissipation (critical in dense cabinet layouts)
• Wiring Specifications: Use shielded cables for signal lines to reduce EMI; separate power and signal wiring
• NAMUR Compatibility: Verify NAMUR sensors meet EN 60947-5-6 standards for use with 2864105
• Multiplexer Setup: For 2811815, ensure FLK16 interface compatibility with PLC/DCS before integration