Allen-Bradley 1797-PS2E2 FLEX Ex Intrinsically Safe Power Supply

Product Overview

The Allen-Bradley 1797-PS2E2 serves as a specialized power supply engineered specifically for the FLEX Ex intrinsically safe I/O system. Designed for hazardous area applications, this unit accepts a standard 24V DC input and converts it into four independent, galvanically isolated 9.5V DC outputs. Each output channel delivers up to 8.5W of power, safely energizing intrinsically safe field instruments located within flame-proof or explosive environments. We supply this item as a 100% Brand New, factory-sealed unit.

Technical Specifications

Engineering Advantages

Quad-Channel Galvanic Isolation for Hazardous Areas
The 1797-PS2E2 provides four independent 9.5V DC outputs, each featuring robust galvanic isolation. This critical safety feature prevents dangerous energy from passing from the safe area to the hazardous area, protecting sensitive intrinsically safe sensors and transmitters. Engineers can power multiple field devices from a single module without worrying about ground loops or cross-channel interference.

Optimized Power for Intrinsically Safe Field Devices
Delivering 8.5W of power per channel, this supply is perfectly matched to the energy requirements of modern intrinsically safe instrumentation. The specialized 9.5V DC output ensures that field devices operate within their safe entity parameters, maintaining the integrity of the hazardous area classification while providing stable and consistent voltage.

Seamless FLEX Ex System Integration
Designed to mount directly onto the FLEX Ex bus, this power supply integrates effortlessly with other FLEX Ex I/O modules. Its compact, flame-proof enclosure design allows you to build dense, modular I/O racks for Zone 1 or Division 1 environments, significantly reducing panel space compared to traditional discrete safety barrier solutions.

FAQs

Q: What is the primary function of the 1797-PS2E2?
A: This module acts as a dedicated power supply for the Allen-Bradley FLEX Ex system. It takes a standard 12-32V DC input and provides four isolated 9.5V DC outputs specifically designed to safely power intrinsically safe devices in hazardous locations.

Q: How much power does each output channel provide?
A: Each of the four output channels delivers up to 8.5 watts of power. This capacity is sufficient to drive most standard intrinsically safe transmitters, sensors, and field instruments used in process automation.

Q: Why is galvanic isolation important in this power supply?
A: Galvanic isolation physically and electrically separates the input power from the output channels. In hazardous area applications, this prevents high-energy faults from reaching the field devices, ensuring the safety of the installation and preventing potential ignition sources.

Q: What input voltage range does this module accept?
A: The 1797-PS2E2 is designed for a nominal 24V DC input but operates reliably across a wide voltage range of 12 to 32V DC, accommodating various industrial control power supply configurations.