Communication Module | Siemens | 6ES7 531-7KF00-0AB0 S7-1500 analog input module 6ES7531-7KF00-0AB0

Product Description: Siemens 6ES7531-7KF00-0AB0

The Siemens 6ES7531-7KF00-0AB0 is a high-resolution analog input module from the SIMATIC S7-1500 series designed specifically for RTD (Resistance Temperature Detector) sensors. Featuring 8 analog input channels, this module supports direct connection of temperature sensors such as PT100 and PT1000, allowing precise thermal monitoring in automation systems. It delivers excellent signal accuracy and diagnostic features, making it ideal for applications requiring high-reliability temperature acquisition.

Key Features

• 8 analog inputs for direct RTD sensor connection
• Supports PT100, PT1000, and other standard RTDs
• High accuracy with 16-bit resolution
• Channel-level diagnostics and configurable parameters
• Integrated wire break detection and plausibility checks
• Direct integration with TIA Portal
• DIN rail mounting, designed for S7-1500 standard racks

Technical Specifications

• Part Number: 6ES7531-7KF00-0AB0
• Number of Inputs: 8 RTD channels
• Supported RTD Types: PT100, PT1000, NI100, NI1000, etc.
• Measurement Range: –200 °C to +850 °C (depending on RTD type)
• Resolution: 16 bits
• Accuracy: ±0.1% (typical)
• Input Type: 2-wire and 4-wire measurement
• Diagnostics: Yes (wire break, plausibility, overflow/underflow)
• Isolation: Yes, between channels and backplane bus
• Power Supply: Via S7-1500 backplane bus
• Mounting Method: DIN rail
• Dimensions (W × H × D): 35 mm × 147 mm × 129 mm
• Protection Class: IP20
• Operating Temperature: 0 °C to +60 °C
• Storage Temperature: –40 °C to +70 °C
• Certifications: CE, cULus, EAC

Application Areas

• Precise temperature monitoring in industrial automation
• Process industries such as food, chemical, and pharmaceuticals
• HVAC systems with multi-point thermal sensing
• Equipment requiring high-resolution RTD-based control
• Distributed automation systems based on S7-1500 architecture

Advantages

• Direct RTD sensor interface reduces external wiring and converters
• High accuracy and stability for precise temperature control
• Integrated diagnostics enhance system safety and transparency
• Easy configuration and monitoring via TIA Portal
• Compact module design fits seamlessly into S7-1500 systems