Siemens Sirius Safety relay, input expansion, screw, 24VDC

Product Overview

The 3SK1220-1AB40 is a SIRIUS safety relay input expansion unit (Advanced) designed to extend the input capabilities of safety relay systems for complex sensor configurations. This advanced input expansion module provides flexible connectivity for an additional 2-channel sensor or two separate 1-channel sensors, operating at 24 V DC with reliable screw terminal connections. The unit offers enhanced sensor integration capabilities, allowing safety relay systems to accommodate additional safety sensors, switches, or monitoring devices beyond the basic unit's capacity. This expansion functionality enables comprehensive safety system design where multiple sensors, emergency stops, or safety devices need to be monitored and integrated into a single safety control system.

Key Features & Specifications

• Product Type: Input expansion unit (Advanced) for SIRIUS safety relay systems
• Sensor Configuration: Additional 2-channel sensor OR two separate 1-channel sensors
• Supply Voltage: 24 V DC
• Terminal Type: Screw terminals for secure field connections
• Expansion Function: Extends input capabilities of safety relay basic units
• Advanced Features: Enhanced sensor integration and monitoring capabilities
• Flexible Configuration: Supports both dual-channel and single-channel sensor inputs
• System Integration: Designed to work seamlessly with SIRIUS safety relay basic units
• Compact Design: Space-efficient expansion solution for control panels
• Industrial Grade: Robust construction for demanding industrial environments

Technical Data

• Supply Voltage: 24 V DC
• Net Weight: 0.160 kg
• Packaging Dimensions: 36.00 x 109.00 x 152.00 mm
• Terminal Technology: Screw terminals for reliable field connections
• Housing: Compact industrial-grade housing design
• Mounting: Standard DIN rail mounting capability
• Operating Temperature: Industrial temperature range
• Expansion Type: Advanced input expansion configuration
• Connection Method: Screw terminal connections for sensor wiring

Sensor Integration Capabilities

• 2-Channel Sensor Support:
  • Single 2-channel safety sensor connectivity
  • Enhanced redundancy for critical safety applications
  • Dual-channel monitoring for maximum safety integrity
• Dual 1-Channel Sensor Support:
  • Two separate 1-channel safety sensors
  • Flexible configuration for multiple sensor types
  • Independent monitoring of separate safety devices
• Advanced Input Processing: Enhanced sensor signal processing and evaluation
• Sensor Compatibility: Compatible with various safety sensor types and configurations
• Signal Integrity: Reliable sensor signal transmission and monitoring

Safety Features

• Input Expansion: Provides additional sensor input capabilities for complex safety systems
• Flexible Sensor Configuration: Supports both 2-channel and dual 1-channel sensor arrangements
• Advanced Monitoring: Enhanced sensor monitoring and evaluation capabilities
• 24 V DC Operation: Safe low-voltage operation for personnel protection
• Sensor Redundancy: Dual-channel capability for enhanced safety integrity
• Screw Terminal Connections: Secure, vibration-resistant sensor connections
• System Scalability: Allows expansion of safety systems without additional basic units
• Fail-Safe Design: Ensures safe state in case of sensor failure or fault conditions
• Compact Form Factor: Efficient use of control panel space

Standards & Compliance

• Safety Standards: Designed for advanced industrial safety applications
• Product Lifecycle: PM300 Active Product status
• Export Control: AL: N / ECCN: 9N9999 classification
• Environmental: RoHS directive compliance since 05.11.2012
• Waste Management: WEEE (2012/19/EU) Take-Back Obligation compliant
• Country of Origin: Germany
• Product Classification: Class A standard product with return eligibility
• Advanced Standards: Enhanced capabilities for sensor integration and monitoring

Applications

The 3SK1220-1AB40 is ideal for expanding the input capabilities of safety relay systems where additional sensors, emergency stops, or safety devices need to be monitored. Common applications include manufacturing equipment with multiple safety sensors, automated production lines requiring additional emergency stop points, packaging machinery with distributed safety switches, conveyor systems with multiple safety monitoring points, and process systems requiring comprehensive sensor coverage. The flexible configuration allows for integration of light curtains, safety mats, emergency stop buttons, guard switches, or other safety sensors, providing comprehensive monitoring coverage for complex safety applications.

Important Notes

• Input Expansion Unit: Designed to work with SIRIUS safety relay basic units
• Supply Voltage: 24 V DC operation for sensor system compatibility
• Sensor Configuration: Supports additional 2-channel OR two 1-channel sensors
• Terminal Type: Screw terminals for secure sensor wiring connections
• Installation: Standard DIN rail mounting for control panel integration
• System Design: Requires safety relay basic unit for complete system operation
• Advanced Features: Enhanced sensor integration and monitoring capabilities
• Flexible Connectivity: Accommodates various sensor types and configurations

Package Information

• EAN: 4011209913868
• UPC: Not available
• Packaging Dimensions: 36.00 x 109.00 x 152.00 mm
• Packaging Quantity: 1 piece
• Net Weight: 0.160 kg

REACH Compliance Information

This product contains substances from the REACH candidate list in concentrations higher than 0.1% weight by weight: Lead, Lead monoxide, 2,2',6,6'-tetrabromo-4,4'-isopropylidenediphenol, 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one, 6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol, and Lead titanium zirconium oxide. Based on current available information, these substances do not pose any risk when the product is used as intended, including disposal.

Download existing graphical data for this product:

• Product Details - Siemens Industry Mall
• Technical Data Sheet (PDF)
• Product Support - Siemens Industry Online Support