Phoenix MACX Series: Industrial Signal Conditioning & Monitoring Modules - Selection Guide

Product Overview

The Phoenix MACX Series encompasses high-performance signal conditioning, monitoring, and conversion modules designed for industrial automation. Covering precision signal isolation, voltage monitoring (DC/AC), temperature acquisition (TC/RTD), multiplexing, and relay output functions, these modules ensure reliable signal processing between field devices and control systems (PLC/DCS). Featuring compact DIN rail mounting (6.2mm width for SL sub-series), universal 24V DC power supply, and options for 免校准 (NC), pluggable terminals (SP), and precision isolation, the series excels in harsh industrial environments. Compliant with global standards (CE, UL, CSA), it’s ideal for process control, manufacturing, and critical applications requiring noise-free, accurate signal transmission.

Model Quick Reference Table

Core Technical Specifications (Universal)

Application Scenarios & Recommended Models

1. Precision Signal Isolation (Critical Processes)

• Requirement: High-accuracy signal isolation for sensitive sensors
• Recommended Models: 2924210 (RPSSI-I-UP-SP), 2904961 (PL-RPSSI-2I)
• Key Reason: ≤±0.1% FS accuracy + 3kV isolation, ideal for pharmaceutical/ aerospace process control

2. Temperature Monitoring (TC/RTD Sensors)

• Requirement: Calibration-free RTD/TC integration, pluggable terminals
• Recommended Models: 2924320 (RTD-I-SP-NC), 2924346 (TC-I-NC)
• Key Reason: NC (免校准) enables plug-and-play; SP terminals simplify maintenance

3. AC/DC Voltage Monitoring (Power Grids)

• Requirement: PT-compatible voltage detection for industrial power supplies
• Recommended Models: 2906243 (VDC-PT), 2906244 (VAC-PT)
• Key Reason: Integrate with potential transformers for accurate grid voltage monitoring

4. Signal-Triggered Relay Control

• Requirement: Convert UI signals to relay outputs for load switching
• Recommended Models: 2906170 (UI-REL-SP), 2906169 (UI-REL)
• Key Reason: 4-20mA/0-10V signal compatibility; SP models ease wiring updates

5. Signal Multiplexing (I/O Reduction)

• Requirement: Consolidate multiple signals to reduce PLC I/O modules
• Recommended Models: 2865599 (MCR-S-MUX), 2308124 (MCR-S-MUX-TB)
• Key Reason: Multi-channel design lowers hardware costs; terminal block variants simplify wiring

6. Bidirectional Signal Conditioning

• Requirement: 2-in/2-out signal isolation/amplification
• Recommended Model: 2904090 (RPSS-2I-2I-SP)
• Key Reason: Bidirectional functionality for two-way signal transmission between devices

Core Advantages

• Dual Precision Tiers: Precision (≤±0.1% FS) and standard (≤±0.2% FS) models fit different accuracy needs
• Plug-and-Play Convenience: NC (免校准) models eliminate manual calibration, reducing deployment time
• Space-Saving Design: 6.2mm width (SL sub-series) maximizes dense control cabinet utilization
• Flexible Terminals: SP (pluggable) and fixed terminals balance maintenance ease and cost-efficiency
• Comprehensive Signal Support: Covers voltage, current, temperature, and multiplexing in one series
• Industrial-Grade Reliability: 3kV isolation + wide temperature range resists interference and harsh conditions
• Global Compatibility: CE/UL/CSA certifications enable international deployment

Installation & Usage Notes

• Voltage Matching: Ensure supply voltage is 24V DC (19.2~30V DC); reverse polarity protection is built-in
• Sensor Compatibility: For temperature modules, verify TC/RTD type matches module specifications (e.g., PT100 for RTD models)
• Terminal Selection: Choose SP models for systems requiring frequent wiring changes; fixed terminals for cost-sensitive setups
• Mounting Spacing: Reserve ≥3mm between SL sub-series modules; ≥5mm for multi-channel models to ensure heat dissipation
• Wiring Specifications: Use shielded cables for signal lines to reduce EMI; separate power and signal wiring by ≥10mm
• NC Model Usage: NC modules are factory-calibrated—avoid manual adjustment unless custom calibration is required
• Relay Load Capacity: For UI-REL models, ensure load current/voltage does not exceed relay ratings (add 20% margin)