Siemens 6ES7331-7PF01-0AB0 Analog Input Module

The Siemens 6ES7-331-7PF01-0AB0 SM 331 module provides eight high-resolution analog inputs for RTD sensors, supporting a wide variety of Pt, Ni, and Cu elements in 2-, 3-, or 4-wire configurations. Its 24-bit internal resolution and 50 ms cycle time make it ideal for demanding temperature monitoring tasks in industrial automation.

Technical Specifications

• Model: 6ES7331-7PF01-0AB0 Siemens
• Series: SIMATIC S7-300
• Module Type: SM 331 Analog Input
• Input Channels: 8 AI
• Signal Type: Resistance Temperature Detectors (RTDs)
• Supported Sensors: Pt100, Pt200, Pt1000, Ni100, Ni120, Ni200, Ni500, Ni1000, Cu10
• Connection Type: 2-/3-/4-wire
• Input Isolation: Yes
• Resolution: Internal 24-bit
• Measurement Cycle Time: 50 ms
• Connector Type: 1 × 40-pole
• Mounting: Standard S7-300 rail mounting
• Lifecycle Status: Product phase-out announced (since 01.10.2023)

Function & Application

Purpose:
High-precision analog input module for resistance-based sensors in SIMATIC S7-300 systems, ideal for temperature monitoring and process control.

Typical Applications:

• RTD-based temperature measurement in industrial systems
• HVAC and process automation
• Multi-point monitoring using a variety of sensor types
• Applications requiring isolated, high-resolution analog acquisition

Recommended Accessories

• 6ES7392-1AM00-0AA0 – 40-Pole Screw Front Connector
• 6ES7392-1BM01-0AA0 – 40-Pole Spring-Loaded Front Connector

Delivery & Compliance

• Packaging Dimensions: 12.80 × 15.00 × 5.00 cm
• Net Weight: 0.327 kg
• Packaging Quantity: 1 Piece
• Country of Origin: Germany
• Estimated Dispatch Time: 1 Working Day

Product Compliance & Classification

• RoHS Compliance: Since 31.03.2008
• WEEE Take-Back Obligation: Yes
• SCIP Number: 78f9ac6c-4c4e-4ee9-a5ec-36a29bbd12bf

REACH Substances:

• Lead (CAS 7439-92-1) > 0.1%
• Lead monoxide (CAS 1317-36-8) > 0.1%
• 2-Methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one (CAS 71868-10-5) > 0.1%
• 6,6′-Di-tert-butyl-2,2′-methylenedi-p-cresol > 0.1%
• Commodity Code: 85389091
• Catalog ID: ST73
• Product Group: 2288
• Group Code: R151
• Product Class: A – Stock item, returnable
• EAN: 4025515071549
• UPC: 662643177916

Key Features & Benefits

✅ 8 RTD Inputs. Supports Pt100, Pt200, Pt1000, Ni100–Ni1000, Cu10 types.

✅ Isolated Inputs. Ensures high signal integrity in industrial environments.

✅ 2-/3-/4-Wire Support. Flexible wiring options for accurate measurement.

✅ High Resolution. Internal 24-bit conversion for precise temperature readings.

✅ Standard S7-300 Rail Mounting. Easy integration with existing systems.

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Need help choosing temperature input modules, compatible connectors, or planning a migration to ET 200SP?

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