Purchase now: Phoenix Contact 1290776 Ex-i Signal Conditioner
Atlantech Drives provides you the Phoenix Contact 1290776 (Type: MACX MCR-EX-AP-RPSS-I-IR-SP), a state-of-the-art Repeater Power Supply and Input Signal Conditioner designed for the safest industrial operations. This device is engineered to transmit 0/4-20 mA analog signals from hazardous areas (Ex i) to safe areas while providing galvanic isolation. It is a critical component for process industries (Oil & Gas, Chemical, Pharmaceutical) where intrinsically safe circuits are mandatory to prevent explosions.
Technical Specifications and SIL 2 Reliability
The 1290776 is part of the MACX Analog Ex series and features Push-in connection technology for tool-free, vibration-resistant wiring. It offers 4-way isolation (Input/Output/Power/Relay) and is fully HART-transparent, allowing digital communication with smart field devices without signal interruption.
- Model: MACX MCR-EX-AP-RPSS-I-IR-SP.
- Function: Repeater power supply & Input signal conditioner.
- Safety Integrity Level: SIL 2 (IEC 61508).
- Input: 0/4…20 mA (Intrinsically safe).
- Output: 0/4…20 mA (Active/Passive).
- Limit Relays: 2 configurable changeover contacts (Relays).
- Connection: Push-in Technology (-SP).
- Housing Width: 12.5 mm.
Expert Tips: Configuring Limit Values
Unlike standard isolators, the 1290776 includes two configurable limit value relays. This means it can act as a standalone controller. For example, in a tank level application, you can set Relay 1 to trigger a «High Level Alarm» and Relay 2 for «Critical Shut-off» directly on the device, providing a redundant safety layer independent of your main PLC. Configuration can be done via DIP switches or FDT/DTM software.
Frequently Asked Questions (FAQs)
Q: What does «HART-transparent» mean for this device?
A: It means the device passes the digital HART protocol frequencies superimposed on the 4-20mA signal. This allows you to configure or diagnose your smart field sensors from the control room without bypassing the safety barrier.
Q: Can I use this in Zone 2?
A: Yes, the 1290776 can be installed in Zone 2 (Safe Area) to interface with sensors located in Zone 0, 1, or 2.
Do you need more references from this brand? Explore our full catalog of Phoenix Contact here.
