Phoenix Contact MACX MCR-EX-AP-2REL-2DI-LP – Loop-Powered Ex i Relay Module
The Phoenix Contact MACX MCR-EX-AP-2REL-2DI-LP is a loop-powered Ex i relay module engineered for isolating and controlling binary signals between intrinsically safe and non-intrinsically safe circuits. Designed with two independent channels and 4-way isolation, it ensures safe and interference-free signal transmission in hazardous zones. This compact module operates without an external power source, simplifying system wiring while maintaining safety integrity up to SIL 2 (IEC 61508). It provides a dependable switching interface ideal for environments requiring explosion protection and reliable signal control.
The MACX MCR-EX-AP-2REL-2DI-LP combines intrinsic safety, precision, and reliability for demanding automation tasks. Its loop-powered configuration minimizes installation complexity and reduces maintenance effort. The module offers rapid response times and stable performance even in harsh industrial environments, such as oil refineries, chemical plants, and process automation systems. Built to operate within a wide temperature range and tested for electromagnetic compatibility, it maintains operational integrity under pressure. Compact yet powerful, it enhances control reliability while meeting international safety standards for hazardous area applications.
Why MACX MCR-EX-AP-2REL-2DI-LP?
Choose the MACX MCR-EX-AP-2REL-2DI-LP for its smart loop-powered design, dual-channel reliability, and SIL 2-certified safety. It’s compact yet powerful, offering 4-way isolation for critical signal integrity. Ideal for engineers who demand precision and simplicity, it transforms complex control tasks into seamless, intrinsically safe operations.
What Problem Does It Solve?
This relay module eliminates the challenge of safely linking hazardous-area field signals with control systems. By isolating and converting Ex i and non-Ex i signals without external power, it prevents cross-interference, reduces wiring effort, and ensures safety compliance—making it the perfect solution for explosion-risk environments and precision industrial automation.
Key Features & Specifications – Phoenix Contact MACX MCR-EX-AP-2REL-2DI-LP: 1292331
| Feature | Details | Benefit |
|---|---|---|
| Product Type | Loop-powered Ex i Relay Module | Enables intrinsically safe control in hazardous areas. |
| Channels | 2 independent channels | Provides flexibility for multi-signal isolation and control. |
| Electrical Isolation | 4-way isolation | Guarantees safe separation of input, output, and power circuits. |
| Safety Integrity Level (SIL) | SIL 2 (IEC 61508) | Certified for reliable use in safety-related applications. |
| Power Supply | Loop-powered, no external supply required | Reduces wiring complexity and installation costs. |
| Input Signal Range | 12 V to 31.2 V DC | Supports a broad range of control signals. |
| Contact Switching Type | 1 changeover contact per channel | Allows flexible signal routing and control. |
| Switching Voltage | Up to 45 V DC / 45 V AC | Handles both DC and AC loads with high reliability. |
| Switching Frequency | ≤ 15 Hz | Suitable for steady-state control applications. |
| Response Time | ≤ 10 ms | Ensures rapid signal transfer and system responsiveness. |
| Mounting Type | DIN rail (NS 35/7.5 or 35/15) | Quick installation and easy maintenance in control cabinets. |
| Connection Type | Screw terminal, M3 thread | Offers secure and vibration-resistant wiring. |
| Housing Material | PA 6.6, UL 94 V0 rated | Flame-retardant and durable housing for industrial use. |
| Protection Degree | IP20 (terminals), IP30 (housing) | Safe for control cabinet integration. |
| Operating Temperature | -20°C to +70°C | Reliable performance in a wide range of environments. |
| Compliance & Certifications | ATEX, IECEx, NAMUR NE 21 | Meets global standards for explosion-proof and EMC performance. |
| Typical Applications | Process automation, oil & gas, chemical industries | Ensures safe control in hazardous or explosive zones. |
Download Phoenix Contact MACX MCR-EX-AP-2REL-2DI-LP (1292331) Datasheet
Commercial Information – Phoenix Contact MACX MCR-EX-AP-2REL-2DI-LP: 1292331
| Commercial Data | Details |
|---|---|
| GTIN Number | 4063151525613 |
| Traffic Number (Customs Tariff) | 85437090 |
| Weight (Excl. Packing) | 160 g |
| Country of Origin | Germany (DE) |
The Applications
1. Gas Pipeline Leak Detection System
In large gas transport networks, sensors monitor pressure and gas concentrations along extended pipelines. The MACX MCR-EX-AP-2REL-2DI-LP enables these sensors to transmit critical alerts safely from explosive zones to remote control centers. Its intrinsically safe design prevents ignition risks, while 4-way isolation ensures that electrical interference or ground loops do not corrupt readings. Being loop-powered, it reduces wiring needs over long distances, offering a highly reliable and maintenance-free solution for continuous leak detection and safety assurance.
2. Offshore Oil Platform Fire Alarm Interface
On offshore platforms, reliable fire and gas detection is essential. The relay module provides dual-channel isolation to connect flame detectors and smoke sensors from hazardous areas to safety systems. Its fast switching time ensures alarms are immediately communicated to emergency shutdown circuits. The compact DIN-rail format fits easily into confined control cabinets, while SIL 2 safety compliance provides confidence that alerts are transmitted accurately under extreme offshore conditions of humidity, vibration, and temperature.
3. Chemical Plant Safety Valve Monitoring
In chemical processing zones, solenoid valves and switches are used to regulate hazardous materials. The MACX relay module safely isolates and transmits on/off valve feedback signals to the main DCS system. Its changeover contacts allow flexible routing for different control loops, while intrinsic safety certification ensures compliance with explosion protection standards. The module’s loop-powered operation minimizes additional wiring, improving installation efficiency and reducing power loss. This ensures process safety and helps maintain continuous, reliable production monitoring.
4. Mining Ventilation and Gas Detection Control
Underground mining operations rely on accurate ventilation and gas detection systems. The MACX module acts as a secure bridge between field detectors and surface controllers, ensuring signal integrity over long distances. Its robust isolation prevents electrical noise from motorized equipment, while loop-powered efficiency supports installations where power access is limited. Resistant to harsh environmental conditions, this compact relay unit provides dependable signal control and contributes to safer underground environments by supporting continuous airflow and gas level monitoring.
Related Products & Accessories – Phoenix Contact MACX MCR-EX-AP-2REL-2DI-LP: 1292331
| Category | Model Name | Part Number | Benefits |
|---|---|---|---|
| Separating Plate | MCR-DP | 1430594 | Maintains safe Ex i isolation gaps when Ex i and non-Ex i devices are installed side by side on a DIN rail. Ensures compliance with safety standards. |
| DIN Rail Bus Connector (Right) | ME-TBUS-A MC 1,5-2 | 1351974 | Enables right-side connection of MACX modules to the MACX MCR-PTB(-SP) power module for efficient power distribution. |
| DIN Rail Bus Connector (Left) | ME-TBUS-A IMC 1,5-2 | 1351982 | Provides left-side connection to bridge supply voltage between MACX MCR-EX-AP modules and power modules. |
| Insulating Sleeve (White) | MPS-IH WH | 0201663 | Provides safe electrical insulation and visual coding for conductors in control wiring. |
| Insulating Sleeve (Red) | MPS-IH RD | 0201676 | Enhances wiring safety and circuit identification with color-coded insulation. |
| Insulating Sleeve (Blue) | MPS-IH BU | 0201689 | Offers electrical insulation and supports easy circuit distinction during maintenance. |
| Insulating Sleeve (Yellow) | MPS-IH YE | 0201692 | Color-coded sleeve for clear wiring organization in Ex i installations. |
| Insulating Sleeve (Green) | MPS-IH GN | 0201702 | Adds protective insulation and assists in quick circuit identification. |
| Insulating Sleeve (Gray) | MPS-IH GY | 0201728 | Improves safety and simplifies wiring checks with color differentiation. |
| Insulating Sleeve (Black) | MPS-IH BK | 0201731 | Offers durable insulation and consistent cable management within control panels. |
| Test Plug | MPS-MT | 0201744 | Allows convenient testing and troubleshooting of signal paths without disconnecting wiring. |
| Plastic Label (White) | UC-EMLP (11×9) | 0819291 | Adhesive labeling sheet for clear and durable component identification. Compatible with BLUEMARK and CMS printers. |
| Plastic Label (Yellow) | UC-EMLP (11×9) YE | 0822602 | Improves equipment visibility with long-lasting yellow adhesive labels. |
| Plastic Label (Silver) | UC-EMLP (11×9) SR | 0828094 | Provides durable silver labeling suitable for harsh industrial environments. |
| Plastic Label Card (White) | US-EMLP (11×9) | 0828789 | Thermal printer-compatible card for quick and accurate labeling using THERMOMARK systems. |
| Device Marker (White) | LS-EMLP (11×9) WH | 0831678 | Adhesive device marker for easy equipment labeling using laser or thermal marking tools. |
| Screwdriver | SZS 0,6×3,5 | 1205053 | Insulated screwdriver designed for secure installation and maintenance of Phoenix Contact terminal and relay modules. |