Siemens SIMATIC S7-300 Digital output SM 322, isolated 16DO, 120/230VAC, 1A Part number 6ES7322-1FH00-0AA0

Product Overview

The Siemens SIMATIC S7-300 digital output module 6ES7322-1FH00-0AA0 provides 32 digital outputs, each rated at 24 V DC and 0.5 A per channel. It is designed for high-speed, reliable signal output in automation systems and supports both standard and inductive loads. The module enables precise actuation of field devices and integrates seamlessly into the SIMATIC S7-300 PLC platform.

Key Features

• 32 digital outputs, 24 V DC, 0.5 A per channel
• Galvanic isolation between groups for increased reliability
• High-speed switching suitable for standard and inductive loads
• Compact design for easy installation in S7-300 racks
• Comprehensive diagnostics for short-circuit and wire-break detection
• LED indicators for channel and module status monitoring

Technical Specifications

• Product Series: SIMATIC S7-300 I/O Modules
• Article Number: 6ES7322-1FH00-0AA0
• Designation: SM 322; Digital Output Module 32x DC 24V/0.5A
• Number of Outputs: 32 channels
• Output Voltage: 24 V DC (rated)
• Output Current: 0.5 A per channel
• Group Isolation: 4 groups of 8 channels each, galvanically isolated
• Switching Delay: approx. 0.2 ms ON / 0.2 ms OFF
• Load Type: Resistive or inductive loads
• Diagnostics: Short-circuit and wire-break detection per group
• Backplane Bus Current Draw: 5 V DC, approx. 50 mA
• Power Loss: approx. 6 W
• Protection Class: IP20
• Mounting Type: DIN rail, modular rack mounting (S7-300 system)
• Dimensions (W × H × D): 40 mm × 125 mm × 120 mm
• Net Weight: approx. 350 g
• Operating Temperature: 0 °C to +60 °C
• Storage Temperature: –40 °C to +70 °C

Compliance & Certifications

• Complies with IEC / EN 61131-2 for programmable controllers
• CE marked and UL certified for industrial control equipment
• RoHS compliant and suitable for global industrial applications

Applications

The Siemens 6ES7322-1FH00-0AA0 module is ideal for distributed automation systems, machine control, and process automation. It provides efficient switching of actuators such as solenoid valves, contactors, and signal lamps, ensuring dependable operation and seamless integration into SIMATIC S7-300 environments.