Product Overview
Siemens 6ES7431-7QH00-0AB0 is a high-precision analog input module for SIMATIC S7-400 systems.
It handles many signal types in one compact module.
Stable measurement improves control quality.
Core Advantages
- Supports voltage, current, temperature, and resistance.
- High 16-bit resolution for accurate data.
- Built-in diagnostics reduce troubleshooting time.
- Isolated design improves noise resistance.
- Ideal for mixed-signal process systems.
Module Identity
- Brand: Siemens
- Model: 6ES7431-7QH00-0AB0
- Product line: SIMATIC S7-400
- Module type: SM 431 Analog Input
- Input channels: 16 total
- Resolution: 16 bit
Supported Signal Types
- Voltage signals from microvolts to ±10 V.
- Current signals from 0 to 20 mA.
- Thermocouples for wide temperature ranges.
- RTDs such as Pt100 and Pt1000.
- Resistive sensors up to 5000 ohms.
Measurement Performance
- Basic conversion time as low as 6 ms.
- Configurable integration time per channel.
- High interference suppression at 50/60/400 Hz.
- Temperature drift as low as 0.004 % per K.
Accuracy and Stability
- Voltage accuracy up to ±0.15%.
- Current accuracy up to ±0.15%.
- Resistance measurement optimized for 4-wire method.
- Thermocouple linearization is configurable.
Electrical and Isolation Design
- 24 VDC load supply for 2-wire transmitters.
- Reverse polarity protection included.
- 500 V DC isolation between sections.
- Designed for stable long cable runs.
Installation and Wiring
- Fits standard S7-400 racks.
- Supports 2-wire, 3-wire, and 4-wire sensors.
- Shielded cable length up to 200 m.
- Clear parameter setup in STEP 7.
Typical Applications
- Process temperature monitoring.
- Pressure and flow measurement.
- Energy and utility systems.
- Industrial automation plants.
Physical Data
- Width: 25 mm
- Height: 290 mm
- Depth: 210 mm
- Weight: Approx. 500 g
Package Contents
- One Siemens 6ES7431-7QH00-0AB0 module.
- Factory-tested industrial packaging.
Warranty and Shipping
- 12-month warranty from shipment.
- Fast delivery via FedEx, UPS, DHL.
- Worldwide shipping available.
Professional FAQ
- Why use one module for many signal types?
- It reduces hardware cost and cabinet space.
- How is noise reduced in measurements?
- Isolation and filtering improve signal quality.
- What wiring method gives best accuracy?
- Four-wire connection for resistance sensors.
- Is this module suitable for long cables?
- Yes, with shielded wiring.
- How can maintenance time be reduced?
- Use diagnostics and channel alarms.
Contact Information
- Email: info@oiltechcontrols.com
- Phone: +86 158 8020 0923
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