Siemens Simatic S7-1200, Digital I/O module, 8DI/8DO, 2A

Product Overview

The SIMATIC S7-1200 Digital I/O Module SM 1223 provides robust AC input and relay output capabilities with 8 AC digital inputs and 8 relay outputs. Supporting both 120V and 230V AC inputs with 2A relay outputs, this module delivers reliable switching for industrial automation applications requiring high-power load control and AC signal interfacing.

Key Features

• 8 AC Digital Inputs + 8 Relay Outputs: Universal AC input voltage (120/230V AC) with 2A relay switching capacity
• Dual Voltage Support: 120V AC and 230V AC input compatibility for global applications
• High-Power Relay Outputs: 2A switching capacity per relay for controlling motors, solenoids, and heavy loads
• Galvanic Isolation: Complete electrical isolation between inputs, outputs, and system for enhanced safety
• Compact Modular Design: 45mm width with DIN rail mounting for space-efficient installation
• Comprehensive Diagnostics: Status indication and fault detection for preventive maintenance

Technical Specifications

• I/O Configuration: 8 DI AC + 8 DO Relay channels
• Dimensions: 45 × 100 × 75 mm (W × H × D) | Weight: 0.223 kg
• Input Voltage: 120/230V AC (universal) | Input Current: 4mA typical
• Output Rating: 2A per relay contact | Connection: Screw/spring clamp terminals
• Operating Temperature: -25°C to +60°C | Protection: IP20
• Response Time: 0.2ms signal delay | Isolation: Galvanic isolation between channels

Applications & Integration

Primary Applications:

• Motor control and heavy load switching, lighting control systems
• Industrial machinery with AC power requirements
• Process control with high-power actuators and valves

System Compatibility:

• All S7-1200 CPU models except CPU 1211C (requires signal modules)
• TIA Portal configuration with STEP 7 Basic programming environment
• Up to 8 modules per CPU with hot-swappable installation
• Standard 35mm DIN rail mounting with integrated connections

Quality & Compliance

• Status: Active Product (PM300) | Origin: China
• EAN: 6940408102026 | UPC: 887621209438
• RoHS Compliant: Since 15.03.2013 | WEEE: Take-back obligation applies
• REACH: Contains lead, lead oxide, and BPA above 0.1% w/w (safe when used as intended)

Package Contents

• 1 × SM 1223 Module (8 DI AC/8 DO Relay), technical documentation, DIN rail hardware

Download existing graphical data for this product:

• Technical Datasheet
• Product Information Page
• SM 1223 Product Family
• TIA Portal Documentation
• Technical Specifications