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SIEMENS 6ES7431-7QH00-0AB0 AI Module | 8-Channel, RTD/TC, High Precision, for S7-400

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Certification

"ACH has proven to be a reliable partner. Their products are genuine and high-quality, with competitive prices and on-time delivery. We trust them as our long-term supplier in automation."

—— Mohammed Al-Farsi, Procurement

"For us, cost efficiency and authenticity are key. ACH helps reduce expenses while ensuring reliable quality and timely supply, making them a strong partner in our operations."

—— Procurement Manager

"For us, cost efficiency and authenticity are key. ACH helps reduce expenses while ensuring reliable quality and timely supply, making them a strong partner in our operations."

—— Supply Chain Director

"ACH offers quick response, flexible solutions, and fair pricing. The products are always genuine and reliable, and their friendly support makes cooperation smooth."

—— Operations Manager

"ACH provides genuine products with stable quality and fair pricing. Their fast response and reliable delivery give us confidence to continue working with them."

—— Engineering Manager

"We value ACH for their consistent quality and competitive pricing. Deliveries are always reliable, and their professional support makes procurement much easier for our team."

—— Procurement Head

SIEMENS 6ES7431-7QH00-0AB0 AI Module | 8-Channel, RTD/TC, High Precision, for S7-400

Large Image : SIEMENS 6ES7431-7QH00-0AB0 AI Module | 8-Channel, RTD/TC, High Precision, for S7-400 Get Best Price

Product Details:

Place of Origin:	DE
Brand Name:	SIEMENS
Certification:	ATEX
Model Number:	6ES7431-7QH00-0AB0
Document:	ACH-AB-P+F-E+H-IFM-ASCO-YOK...WA.pdf

Payment & Shipping Terms:

Minimum Order Quantity:	1
Price:	Negotiable
Packaging Details:	carton
Delivery Time:	Negotiable
Payment Terms:	T/T,XT,ALIPAY
Supply Ability:	100pcs per month

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Detailed Product Description

Power Supply:

12-30 V DC (Two-wire)

Ambient Temperature:

-40°C To 80°C (-40°F To 176°F)

Electrical Rating:

General Purpose, Explosion-proof, Intrinsic Safety (depends On Certification)

Certifications:

Standard Models Include ATEX, IECEx, SIL 2 (consult Manual For Specific Ratings)

Highlight:

SIEMENS S7-400 AI module

8-channel RTD/TC module

high precision PLC module

SIEMENS 6ES7431-7QH00-0AB0 AI Module | 8-Channel, RTD/TC, High Precision, for S7-400

SIEMENS 6ES7431-7QH00-0AB0 module specifications. SM 431 analog input, 8 channels, RTD/thermocouple, 16-bit, for S7-400 PLC, high accuracy.

Product Overview

The SIEMENS 6ES7431-7QH00-0AB0 is a high-precision analog input module for the SIMATIC S7-400 PLC system. It provides 8 input channels configurable for connecting resistance thermometers (RTDs like Pt100, Pt1000) or thermocouples (Types J, K, L, N, E, R, S, T, U). The module features 16-bit resolution, integral cold junction compensation, and channel-to-channel isolation, making it suitable for demanding temperature measurement applications in process and factory automation.

Technical Specifications

Parameter	Specification
Manufacturer	Siemens AG
Series	SIMATIC S7-400 (SM 431)
Model	6ES7431-7QH00-0AB0
Product Type	Analog Input Module (Temperature)
Number of Channels	8
Input Types	Resistance thermometer (2/3/4-wire), Thermocouple
Resolution	16-bit (including sign)
Basic Accuracy	±0.1% of range (RTD), ±0.5°C (TC)
Conversion Time	60 ms per channel (typical)
Cold Junction Compensation	Integral (for thermocouples)
Channel Isolation	Yes (channel-to-channel and channel-to-backplane)
Diagnostics	Extensive (wire break, short circuit, over/under range)
Connection	Via front connector (40-pin)
Module Width	40 mm (double-width)
Power from Backplane	5V DC (for electronics)
Sensor Supply	Provides loop power for 2/3-wire RTDs
Ambient Temperature	0 to 60°C (32 to 140°F)
Certifications	CE, cULus

Key Features

Multi-Sensor Support: Flexible configuration for RTDs and various thermocouple types
High Precision: 16-bit resolution and high accuracy for critical temperature loops
Integral Cold Junction Compensation: Ensures accurate thermocouple readings
Channel Isolation: Prevents interference and ground loops
Comprehensive Diagnostics: Real-time monitoring for sensor faults
S7-400 High Availability: Suitable for redundant systems
Front Connector Design: Simplifies wiring and module replacement

Applications

High-accuracy temperature measurement in process industries (chemical, pharmaceutical, power)
Monitoring critical temperatures in manufacturing and machinery
Integration into S7-400 based process control and safety systems
Applications requiring reliable, multi-channel temperature data acquisition

SIEMENS 6ES7431-7QH00-0AB0 AI Module | 8-Channel, RTD/TC, High Precision, for S7-400 0

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About ACH

Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL and EMERSON to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.

Frequently Ask & Questions

Are preferential prices available?

Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.

Are the Products Genuine OEM Units?

Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.

How will you arrange shipment?

We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.

What is the warranty of goods?

One-year Warranty.

How long is the logistics cycle of the product?

Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.

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