Siemens Digital output SM 322, isolated 16 DO, relay contacts Part number 6ES7322-1HH01-0AA0

Product Overview

The Siemens SIMATIC S7-300, digital output SM 322, isolated 16 DO, relay contacts, 1×20, article number 6ES7322-1HH01-0AA0, is a digital output module designed for use within SIMATIC S7-300 automation systems. This SM 322 module provides 16 isolated digital relay outputs, allowing safe and reliable switching of loads in industrial control applications. With relay contact outputs, it is suitable for controlling actuators, contactors, signal lamps, and other field devices that require galvanic isolation from the controller electronics.

Key Features

• Digital output module SM 322 for SIMATIC S7-300 systems
• 16 digital outputs with relay contacts
• Galvanically isolated output channels
• Suitable for switching AC and DC loads
• Relay-based outputs for flexible field device control
• Robust industrial design for control cabinet installation
• Designed for reliable operation in automation environments

Technical Specifications

• Article Number: 6ES7322-1HH01-0AA0
• Product Family: SIMATIC S7-300 SM 322 digital output modules
• Module Type: Digital output module
• Number of Digital Outputs: 16
• Output Type: Relay contacts
• Isolation: Galvanically isolated outputs
• Load Voltage: Suitable for AC and DC loads (relay switching)
• Connection Type: Front connector, 20-pin (1×20)
• Mounting: S7-300 rack mounting
• Degree of Protection: IP20 when installed
• Operating Environment: Industrial automation systems

Compliance & Standards

• Designed for SIMATIC S7-300 automation platforms
• Meets Siemens requirements for digital output and relay switching modules
• Suitable for industrial control and automation applications

Applications

The Siemens 6ES7322-1HH01-0AA0 digital output module is used in SIMATIC S7-300 control systems to switch field devices such as contactors, solenoid valves, signal lamps, and other actuators. The relay-based, isolated outputs make it especially suitable for applications requiring electrical separation between the PLC and the load, including machine automation, process control, and industrial production systems.