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Siemens 6ES7331-7PF11-0AB0 SM 331 AI Module | 8-Channel, RTD, 15-bit, SIMATIC S7-300

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Certification
China Achievers Automation Limited certification
China Achievers Automation Limited 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

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—— Procurement Manager

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Siemens 6ES7331-7PF11-0AB0 SM 331 AI Module | 8-Channel, RTD, 15-bit, SIMATIC S7-300

Siemens 6ES7331-7PF11-0AB0 SM 331 AI Module | 8-Channel, RTD, 15-bit, SIMATIC S7-300
Siemens 6ES7331-7PF11-0AB0 SM 331 AI Module | 8-Channel, RTD, 15-bit, SIMATIC S7-300
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Large Image :  Siemens 6ES7331-7PF11-0AB0 SM 331 AI Module | 8-Channel, RTD, 15-bit, SIMATIC S7-300 Get Best Price

Product Details:
Place of Origin: DE
Brand Name: Siemens
Certification: ATEX
Model Number: 6ES7 331-7PF11-0AB0
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 SM 331 AI Module

,

8-channel RTD PLC module

,

SIMATIC S7-300 analog input

Siemens 6ES7331-7PF11-0AB0 SM 331 AI Module | 8-Channel, RTD, 15-bit, SIMATIC S7-300

Siemens 6ES7331-7PF11-0AB0 module specifications. SIMATIC S7-300 SM 331 analog input module, 8 AI, RTD, 15-bit, 24V DC.

Product Overview

The Siemens 6ES7331-7PF11-0AB0 is an analog input module for the SIMATIC S7-300 programmable logic controller (PLC) system. Part of the SM 331 family, this module provides 8 differential inputs specifically designed for resistance thermometers (RTDs) and resistors. It features 15-bit resolution plus sign and includes electrical isolation between the backplane bus and process circuitry.

Technical Specifications

Parameter

Specification

Manufacturer​

Siemens AG

Series​

SIMATIC S7-300

Model​

6ES7331-7PF11-0AB0

MLFB​

6ES7 331-7PF11-0AB0

Product Type​

SM 331 Analog Input Module

Number of Inputs​

8 differential (for resistance/RTD)

Input Type​

Resistance, RTD (Pt100, Pt1000, Ni100, etc.)

Resolution​

15 bits + sign

Measurement Method​

Integrated

Basic Execution Time​

Approx. 50 ms per channel

Electrical Isolation​

500 V DC (between backplane and process)

Supply Voltage​

24 V DC (load voltage)

Current Consumption​

200 mA (from backplane bus) / 200 mA (from load power supply)

Power Loss​

Typically 4.5 W

Wiring​

40-pin front connector (sold separately)

Dimensions (W x H x D)​

40 x 125 x 117 mm

Weight​

Approx. 250 g

Ambient Temperature​

0 to 60 °C (32 to 140 °F)

Certifications​

CE, cULus, ATEX (hazardous area)

Key Features

  • 8 Differential RTD Inputs:​ Dedicated channels for resistance thermometers

  • High Resolution:​ 15-bit plus sign for precise temperature measurement

  • Wide Sensor Support:​ Compatible with Pt100, Pt1000, Ni100, Ni1000, and general resistance measurements

  • Electrical Isolation:​ Protects the backplane bus from process-side interference

  • **​ Integrated Diagnostics:​ Group diagnostics and wire-break monitoring

  • **​ Adjustable Parameters:​ Measurement type, temperature units (°C/°F), and interference frequency suppression (50/60 Hz) configurable via software

  • **​ Robust Design:​ Built for industrial S7-300 rack environments

Applications

  • Temperature monitoring in industrial processes (heating, cooling, ovens)

  • RTD signal acquisition in chemical, petrochemical, and power plants

  • HVAC system temperature sensing

  • Machine building and plant engineering requiring precision temperature measurement

  • Retrofit and expansion of existing S7-300 automation systems

Important Notes

  1. **Requires a compatible SIMATIC S7-300 rack and power supply, and a CPU for operation.

  2. ​A 40-pin front connector (e.g., 6ES7392-1AM00-0AA0) must be ordered separately.

  3. ​Configuration is performed via STEP 7 or TIA Portal software.

  4. ​Wire break detection is available for all configured channels.

  5. ​The module supports 2-wire, 3-wire, and 4-wire connection of resistance thermometers; ensure correct wiring for optimal accuracy.

Siemens 6ES7331-7PF11-0AB0 SM 331 AI Module | 8-Channel, RTD, 15-bit, SIMATIC S7-300

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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.

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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.

Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this supplier

Rating Snapshot

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All Reviews

K
Khalid Al-Mansoori
United Arab Emirates Jun 21.2026
Helpful (1)
This 3RG4012-3AB00 inductive sensor delivers stable detection, robust M12 connector and reliable PNP output.
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