Product Overview

SIMATIC S7-300 Digital Output SM 322, Isolated, 32 DO, 24 V DC, 0.5A, 1x 40-pole, Total Current 4 A/group (16 A/module)

This high-performance digital output module is designed for SIMATIC S7-300 automation systems, providing thirty-two optically isolated digital outputs with reliable 24V DC switching capability. The module features grouped isolation with enhanced current handling capacity, making it ideal for controlling solenoid valves, contactors, indicator lights, and other industrial actuators in demanding automation applications.

Key Features

• Output Channels: 32 optically isolated digital outputs
• Operating Voltage: 24 V DC
• Output Current: 0.5A per channel
• Isolation: Electrical isolation in groups of 8 channels
• Total Current Capacity: 4A per group (16A per module)
• Connection: 1x 40-pole connector for comprehensive signal connections
• Status Indication: Individual channel status displays
• Protection: Short-circuit protection on all outputs

Technical Specifications

• Article Number: 6ES7322-1BL00-0AA0
• Number of Digital Outputs: 32 channels
• Output Voltage: 24 V DC
• Output Current: 0.5A per channel
• Voltage Range: 20.4 - 28.8 V DC
• Current Capacity: 4A per group (8 channels), 16A per module
• Connection Type: 40-pole connector
• Isolation: Optical isolation in groups of 8
• Dimensions (W x H x D): 40 x 125 x 120 mm
• Response Time: 0.1 - 0.5ms signal delay
• EAN: 4025515060932

Output Characteristics

• Switching Type: Transistor outputs (NPN/PNP configurable)
• Voltage Drop: Low voltage drop for efficient operation
• Load Types: Suitable for resistive, inductive, and capacitive loads
• Protection Features: Short-circuit protection and overload detection
• Permissible Output Voltage: 0 - 28.8 V DC
• Switching Frequency: High-speed switching capability
• Load Current Range: 0 - 0.5A per channel

Safety & Compliance

• Explosion Protection: ATEX gas explosion protection, Category 3G
• Isolation Voltage: High isolation voltage between groups and system
• Operating Temperature: Standard industrial temperature range
• Environmental Rating: IP20 protection class
• Vibration Resistance: Designed for industrial environments
• EMC Compliance: Meets industrial electromagnetic compatibility standards

Applications

• Industrial Control Systems: Solenoid valve control and actuator switching
• Process Automation: Pump control, motor starters, and process equipment
• Manufacturing Systems: Conveyor control, packaging machinery, and assembly lines
• Building Automation: Lighting control, HVAC systems, and access control
• Safety Systems: Emergency stop circuits and safety interlock control
• Signal Processing: Indicator lights, alarms, and status displays
• Machine Control: CNC machines, robotic systems, and automated equipment

Installation Benefits

• High Density: 32 outputs in standard S7-300 module format
• Flexible Configuration: Software-configurable output parameters
• Easy Wiring: 40-pole connector simplifies installation
• Diagnostic Capabilities: Individual channel status monitoring
• System Integration: Seamless integration with SIMATIC S7-300 systems
• Maintenance-Friendly: Easy module replacement and troubleshooting

Load Compatibility

• Solenoid Valves: Direct control of 24V DC solenoid valves
• Contactors: Control of DC contactors and relays
• Indicator Lights: LED indicators and signal lamps
• Motor Starters: Control signals for motor control circuits
• Actuators: Linear and rotary actuators within current limits
• Interface Circuits: Signal conditioning and interface applications

Diagnostic Features

• Channel Status: Individual LED indicators for each output
• Fault Detection: Short-circuit and overload detection
• System Diagnostics: Integration with SIMATIC diagnostic systems
• Error Reporting: Detailed error information via system diagnostics
• Maintenance Indicators: Predictive maintenance support
• Historical Data: Output usage and fault history tracking

Group Configuration

• Group Structure: 4 groups of 8 outputs each
• Isolation Benefits: Electrical isolation between groups
• Current Distribution: 4A maximum per group
• Protection Scope: Group-level protection and diagnostics
• Wiring Flexibility: Independent power supplies per group
• Fault Isolation: Group isolation prevents cross-contamination

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Technical Datasheet

Product Information

SM 322 Digital Output Modules