Qelectrotech Siemens Library -

QElectroTech (QET) does not have a single, monolithic "Siemens Library," many Siemens-specific elements are included in the Official Elements Collection or shared by the community on the official forum Where to Find Siemens Elements Official Collection

: Most standard Siemens components (PLCs, contactors, relays) are bundled with the software. You can find them under the "Official"

tab in the elements panel, typically organized by category or manufacturer. GitHub Repository qelectrotech-elements

repository is the most up-to-date source for new Siemens S7 elements and other contributions. User Contributions

: For specific or newer hardware, users often post custom-made files on the QElectroTech Elements Forum Siemens S7-1200 : Specific elements for the S7-1200 PLC series are frequently discussed and shared. Sinamics V90 : Dedicated elements for Siemens Sinamics V90 drives are also available in user-shared threads. QElectroTech Importing Custom Siemens Elements file from the forum or GitHub. Right-click on your "User Collection" in the QET elements panel. "Open directory" to find the local path on your computer. Copy and paste the downloaded file into that folder. Restart QET or refresh the collection to see the new Siemens parts. QElectroTech Conversion Limitations Share the elements library (Page 1) - QElectroTech

Posts: 15 * 1 Topic by luca_orlandi 2021-03-14 11:20:03 (edited by luca_orlandi 2021-03-14 11:22:30) luca_orlandi. Nouveau membre. QElectroTech Quality of the elements II (Page 1) - QElectroTech

QElectroTech (QET) is a popular open-source software for creating electrical diagrams, and its Siemens-specific library is a vital resource for engineers working with Simatic PLCs, Sinamics drives, and other industrial automation hardware.

The library is primarily a community-driven collection of .elmt files (XML-based symbol formats) that represent Siemens components according to international standards like IEC 60617. 🛠️ Accessing the Siemens Library qelectrotech siemens library

The Siemens elements are not always bundled in the "out-of-the-box" base installation but are readily available through the Official QElectroTech Elements Collection.

Integrated Collection: Check the "Common Collection" tab in your QET panel. Look under Automation > PLC > Siemens.

GitHub Repository: For the latest additions (like S7-1200 or S7-1500 modules), users often pull directly from the Official Elements GitHub.

User Contribs: Many niche Siemens parts (e.g., specific Sinamics V90 drives) are found in the User Contribution Repository. 🧩 Key Library Categories

The library is organized to mirror real-world industrial panels:

PLC Modules: Includes CPUs, Digital Input/Output (DI/DO), and Analog modules for S7-300, S7-400, S7-1200, and S7-1500.

Motor Control: Symbols for Sirius soft starters, contactors, and thermal overloads. QElectroTech (QET) does not have a single, monolithic

Drives & Inverters: High-detail symbols for Sinamics G120 and S120 series. Power Supplies: Common Sitop power modules. HMI Panels: Graphics for Comfort and Basic touch panels. 📥 How to Add Custom Siemens Symbols

If you have a specific Siemens part not in the default list, you can import it using several methods supported by QElectroTech Documentation:

DXF to ELMT Conversion: Siemens provides .dxf drawings for most parts on their SiePortal (formerly Industry Support). Use the "Import DXF" feature in QET to convert these into editable symbols.

Manual Creation: Use the built-in Element Editor to draw a custom footprint. You can set terminal points (power, signal, ground) so that the "Auto-Link" feature works when you draw wires.

Community Forums: The QET Elements Forum is a hub where users share specific Siemens .elmt files they have created. 💡 Best Practices for Use

Use Project Collections: To ensure your project remains portable, QET copies used elements into a "Project Collection." This prevents broken links if you send the file to someone else.

Check Pin Layouts: Always verify the terminal numbering against the official Siemens datasheet, as community-made symbols may occasionally have variations in terminal spacing. Part 8: Real-World Case Study – Panel Build

Layer Management: When using complex Siemens PLCs, utilize the "Folio" system to separate power distribution from I/O signal logic.

Part 8: Real-World Case Study – Panel Build for Pump Station

Scenario: A water treatment system requires 1x S7-1200 CPU, 2x SM1221 DI cards, 5x 3RT contactors, and 10x 5SY MCBs.

Before custom library (using generic QET):

• Time spent drawing/modifying symbols: 8 hours.
• Risk of terminal mismatch: High (using generic IEC contacts with wrong Siemens pinouts).

After building the QElectroTech Siemens library:

• Time spent placing pre-built Siemens components: 45 minutes.
• Bill of materials (BOM) export: Automatic (includes Siemens order codes 6ES7...).
• Mistake count: Zero (terminal numbers hardcoded from datasheet).

ROI: The 10 hours up-front to build the 30-component library paid back in the first project.

Part 3: Sourcing an Existing QElectroTech Siemens Library

Unlike proprietary software ecosystems (Siemens Industry Mall or EPLAN Data Portal), there is no official "Siemens Library" for QElectroTech. However, the open-source community has created substantial resources.

Application A: Conveyor System (S7-1200 + G120 Drives)

• Required elements: S7-1200 CPU, SM1223 I/O card, SINAMICS G120 control terminals, Siemens 3RV20 main breaker.
• Action: Create a "Master Page" template that pre-links the G120 terminals to the S7-1200 outputs.

Part 1: What is QElectroTech? A Quick Refresher

QElectroTech (often abbreviated QET) is a Qt-based application used to create electrical installations, automation systems, and fluid power diagrams. Unlike cloud-based tools, QET stores data locally in XML format, giving you full control.

Key advantages:

• Zero licensing fees (No subscription for Siemens library access).
• Element editor to create custom components.
• Cross-platform (Windows, Linux, macOS).
• Auto-numbering for wires and conductors.

The only bottleneck? Out of the box, QET includes generic symbols (coils, contacts, motors) but lacks specific Siemens part numbers, terminal layouts, and proprietary function blocks.