6ES7234-4HE32-0XB0 Analog I/O Module | Siemens

Siemens SIMATIC S7-1200 SM 1234 Analog I/O Module

The Siemens 6ES7234-4HE32-0XB0 delivers high-precision analog signal processing in a compact module. This versatile SM 1234 analog I/O unit provides flexible signal conditioning for various industrial applications. It ensures accurate measurement and control with multiple input and output ranges.

Core Technical Specifications

• Brand: Siemens
• Model: 6ES7234-4HE32-0XB0 (SM 1234 Analog I/O Module)
• Power Supply: 24 V DC standard industrial voltage
• Analog Inputs: 4 channels with 13-bit resolution
• Analog Outputs: 2 channels with 14-bit resolution
• Input Types: Voltage ±10V, ±5V, ±2.5V and current 0-20mA, 4-20mA
• Operating Temperature: -20 °C to 60 °C horizontal installation

Analog Input Specifications

• Four differential inputs support both voltage and current measurements
• Voltage inputs handle ±10V, ±5V, and ±2.5V ranges with high accuracy
• Current inputs process 0-20mA and 4-20mA signals for process control
• High 9 MOhm input resistance minimizes signal loading on voltage inputs
• Fast 625 µs cycle time for all channels enables rapid signal processing

Analog Output Capabilities

• Two outputs provide both voltage and current output capabilities
• Voltage outputs deliver ±10V signals with 14-bit resolution precision
• Current outputs supply 0-20mA and 4-20mA signals for actuator control
• Supports load impedances from 1kΩ for voltage and up to 600Ω for current
• Excellent 0.3% basic accuracy ensures reliable control signal generation

Signal Processing Features

• Advanced differential measurement principle reduces noise interference
• Configurable integration times allow optimization for different applications
• Four-step smoothing function (None, Low, Medium, High) for signal filtering
• 40 dB interference suppression at 50/60 Hz eliminates power line noise
• Temperature compensation maintains accuracy across operating range

Diagnostic and Monitoring Functions

• Comprehensive diagnostic capabilities for maintenance and troubleshooting
• Wire-break detection identifies open circuit conditions on current inputs
• Short-circuit monitoring protects outputs from wiring faults and overloads
• Supply voltage monitoring ensures proper operating conditions
• Status LEDs provide visual indication of module and channel status

Environmental Durability and Compliance

• Wide operating temperature range from -20°C to 60°C for harsh environments
• High immunity to electromagnetic interference ensures reliable operation
• IP20 protection rating provides basic dust and contact protection
• Carries CE, UL, cULus, FM, and marine approvals for global applications
• Withstands industrial vibrations and mechanical stress conditions

Installation and Setup Guidelines

• Compact 45mm width saves space in control cabinet installations
• Use shielded, twisted pair cables for analog signals up to 100 meters
• Ensure proper grounding to minimize electrical noise interference
• Follow EMC guidelines for cable routing and separation from power lines
• Use appropriate front connector for secure and reliable connections

Packaging and Shipping Information

• Module Dimensions: 45 x 100 x 75 mm (W x H x D)
• Module Weight: Approximately 0.220 kg
• Contents: One Siemens SM 1234 analog module (6ES7234-4HE32-0XB0)
• We ship worldwide using FedEx, UPS, and DHL express delivery services
• Industrial packaging ensures protection during transportation

Frequently Asked Questions

• What signal types does this module support? Voltage ±10V/±5V/±2.5V and current 0-20mA/4-20mA
• What is the resolution of the analog inputs? 13-bit resolution for precise measurement
• How many output channels are available? Two analog outputs with 14-bit resolution
• Does it support diagnostic functions? Yes, including wire-break and short-circuit detection
• What is the maximum cable length? 100 meters with shielded, twisted pair cables

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