Product Introduction and Hazardous Area Automation Power Solution

The Allen Bradley 1797-PS2N2 FLEX Ex Power Supply Module provides a professional power management solution for industrial automation systems operating in hazardous environments. It combines intrinsic safety technology with reliable DC power distribution to support FLEX Ex I/O architectures used in demanding process industries.

In hazardous area automation, maintaining safe and stable power delivery is essential for continuous operation. The 1797-PS2N2 helps engineers simplify system design by providing dedicated intrinsically safe outputs while maintaining compatibility with FLEX Ex distributed I/O modules.

With its rugged industrial construction, isolation protection, and flexible installation capability, the 1797-PS2N2 is an ideal choice for system integrators, process automation engineers, and maintenance teams requiring dependable power solutions in challenging operating environments.

Technical Specifications

Parameter	Specification
Product Type	FLEX Ex Power Supply Module
Manufacturer	Allen Bradley
Model Number	1797-PS2N2
Product Family	FLEX Ex I/O
Input Voltage	19…32 V DC
Input Connector	24 V DC Terminal Connection
Input Current Consumption	3.10 A
Input Power	55 W
Output Type	Intrinsically Safe DC Output
Output Channels	4 Channels
Output Power	4 × 8.5 W
Output Voltage Range	19…32 V DC
Isolation Type	Galvanic Isolation
Hazardous Area Rating	Class I, Division 1 / Zone 1 Applications
Operating Temperature	-20…70 °C
Installation Type	FLEX Ex Distributed I/O System
Dimensions	174 × 40 × 174 mm
Weight	6.10 kg (13.45 lb)

Recommended Related Models

Model	Description
Allen Bradley 1797-PS1N2	FLEX Ex Power Supply Module
Allen Bradley 1797-IBN16	FLEX Ex Digital Input Module
Allen Bradley 1797-OB4D	FLEX Ex Digital Output Module
Allen Bradley 1797-IE8	FLEX Ex Analog Input Module
Allen Bradley 1797-ACNR15	FLEX Ex ControlNet Adapter Module

Popular Related Models

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Industrial Applications and Hazardous Area Power Management

The Allen Bradley 1797-PS2N2 FLEX Ex Power Supply Module is a specialized intrinsically safe power supply designed for FLEX Ex I/O systems operating in hazardous industrial environments. It provides reliable DC power distribution for intrinsically safe field devices while supporting automation applications where explosion protection and stable operation are critical.

Designed for Class I, Division 1 hazardous locations and Zone 1 applications, the 1797-PS2N2 integrates galvanic isolation technology to simplify system architecture by reducing the need for external intrinsic safety barriers. It is widely used in industries where automation equipment must operate safely in potentially explosive environments.

Typical applications include:

Oil and gas processing systems
Chemical production facilities
Pharmaceutical manufacturing equipment
Petrochemical automation systems
Hazardous area process monitoring
FLEX Ex distributed I/O installations
Industrial instrumentation networks

The 1797-PS2N2 provides engineers with a dependable power solution for remote I/O systems, helping maintain safe operation, reduce installation complexity, and improve overall automation system availability.

Power Supply Advantages and FLEX Ex System Performance

Intrinsically Safe Power Distribution

The 1797-PS2N2 is designed to deliver power for FLEX Ex I/O modules in hazardous environments, supporting safe operation where conventional power supplies cannot be directly installed.

Galvanic Isolation Protection

Built-in isolation helps separate input power from intrinsically safe output circuits, improving system protection and reducing the complexity of hazardous-area electrical design.

Multiple Output Channels

The module provides four isolated output channels, each delivering dedicated power for connected FLEX Ex devices and field instrumentation.

Wide DC Input Compatibility

Supporting a 19…32 V DC input range, the 1797-PS2N2 offers flexibility for different industrial power architectures and remote installation requirements.

Enhanced Diagnostic Capability

Advanced status monitoring helps maintenance personnel quickly identify abnormal operating conditions and reduce troubleshooting time in critical automation systems.

Technical FAQs

1. Q: What is the main function of the Allen Bradley 1797-PS2N2 module?
A: The 1797-PS2N2 provides intrinsically safe DC power for Allen Bradley FLEX Ex I/O systems installed in hazardous industrial areas.

2. Q: Which automation systems use the 1797-PS2N2 power supply?
A: The module is designed for Allen Bradley FLEX Ex 1797 series distributed I/O systems.

3. Q: What input voltage range does the 1797-PS2N2 support?
A: The module supports a 19…32 V DC input voltage range for industrial power supply applications.

4. Q: How can engineers troubleshoot a 1797-PS2N2 power failure?
A: Check incoming DC voltage, input wiring, output connections, module status indicators, and connected FLEX Ex I/O devices.

5. Q: What causes the 1797-PS2N2 output voltage to become unstable?
A: Possible causes include insufficient input power, overloaded outputs, incorrect wiring, damaged field devices, or environmental issues.

6. Q: Can the 1797-PS2N2 operate in hazardous locations?
A: Yes. It is designed for hazardous area applications including Class I, Division 1 and Zone 1 environments.

7. Q: Does the 1797-PS2N2 require external intrinsic safety barriers?
A: No. The module includes intrinsic safety features that help reduce the requirement for additional external barriers.

8. Q: How many output channels are available on the 1797-PS2N2?
A: The module provides four intrinsically safe DC output channels for FLEX Ex field devices.

9. Q: What should be checked if connected FLEX Ex modules do not power up?
A: Verify DC input voltage, output wiring, terminal connections, module installation, and connected device requirements.

10. Q: What maintenance is recommended for the 1797-PS2N2?
A: Regular inspection of wiring, terminals, environmental conditions, and system diagnostics is recommended to maintain reliable operation.

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