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BACHMANN SDO204 Safe Digital Output Module

Product Description

The BACHMANN SDO204 is a high-reliability digital output module designed for safety-critical industrial applications. This module features 8 digital output channels organized in two electrically isolated groups, allowing for redundant configuration to meet stringent safety requirements. The SDO204 is certified for Safety Integrity Level SIL 3 (according to IEC 61508) and Performance Level PL e / Category 4 (according to ISO 13849-1), making it suitable for applications where failure could lead to serious injury or significant economic loss .

The module operates autonomously, maintaining safety functions even in case of network failures, and supports a wide output voltage range of +18 to +34V DC with each channel capable of delivering up to 2A current .

Detailed Specifications

• Output Type: Safe digital outputs (8 channels)

• Group Configuration: 2 electrically isolated output groups (4+4 channels)

• Output Voltage Range: +18 to +34V DC

• Current Capacity: 2A per channel

• Safety Standards:

  • SIL 3 (IEC 61508)

  • PL e / Category 4 (ISO 13849-1)

• Redundancy: Can be configured for redundant operation

• Autonomous Safety: Functions maintained during network failures

• Status Indicators:

  • RUN (green) - Normal operation

  • INT (yellow) - System initializing

  • ERR (red) - Error/restart required

  • INT+ERR (yellow+red) - Test mode active 

• Isolation: Electrical isolation between output groups

• Certifications: RoHS compliant, CE certified

Key Features and Advantages

1. High Safety Integrity: Certified for SIL 3 and PL e/Cat 4 applications, ensuring reliable operation in safety-critical systems .

2. Redundant Configuration: The two isolated output groups enable redundant setups for enhanced system reliability .

3. Robust Industrial Design: Built to withstand harsh industrial environments with electrical isolation and wide operating voltage range .

4. Autonomous Operation: Maintains safety functions independently, even during network communication failures .

5. Clear Status Indication: Comprehensive LED indicators provide immediate visual feedback about module status.

6. High Current Capacity: With 2A per channel, the module can directly drive substantial loads like contactors, relays, and valves .

7. Versatile Application: Suitable for controlling various digital loads including contactors, relays, and pneumatic/hydraulic valves .

8. Easy Integration: Compatible with BACHMANN's complete automation system portfolio .

Application Fields

The SDO204 module is designed for use in safety-critical applications across multiple industries:

1. Industrial Machinery: Emergency stop systems, safety interlocks for presses and robots

2. Process Automation: Safety shutdown systems in chemical and petrochemical plants 

3. Energy Sector: Safety controls in power generation and distribution 

4. Material Handling: Conveyor safety systems, crane controls 

5. Manufacturing: Production line safety systems 

6. Renewable Energy: Wind turbine safety systems

7. Marine Applications: Shipboard safety controls 

Usage Notes and Precautions

1. Safety Compliance: Ensure the module is installed and used in compliance with all relevant safety standards and regulations .

2. Proper Grounding: Implement correct grounding practices to maintain electrical safety and prevent interference 

3. Load Considerations: Verify that connected loads do not exceed the module's 2A per channel rating .

4. Environmental Conditions: Install in appropriate enclosures when used in extreme environments .

5. Professional Installation: Should be installed by qualified personnel familiar with safety systems .

6. Regular Testing: Implement periodic testing of safety functions as required by safety standards .

7. Documentation: Maintain complete documentation of safety system configuration and validation .

8. Firmware Updates: Apply manufacturer-recommended firmware updates while maintaining safety validation .

9. System Integration: Verify compatibility with other system components before integration .

1. Maintenance: Follow manufacturer's guidelines for inspection and maintenance intervals .

The structure and details of the product：

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