Qelectrotech Siemens Library

| Device Family | Typical Symbols Available | Quality Level | | :--- | :--- | :--- | | Siemens LOGO! | Logic modules, expansion I/O, AM2 AQ modules | Good | | S7-1200 | CPU 1212C, 1214C, SM (Signal Modules) 1221, 1232 | Moderate | | S7-1500 | Basic CPU, Digital input cards (DI 16x24VDC) | Rare / User-created | | SIRIUS | 3RV circuit breakers, 3RT contactors, 3RA soft starters | Excellent | | SINAMICS | G120, V20 drive terminals | Basic |

The holy grail: Export QET schematics to Siemens TIA Portal selection lists.

Automated approach:

Result: Your schematic library becomes your hardware configuration library.

Industrial projects demand accuracy, consistency, and traceability. Commercial CAD suites are powerful but costly and heavyweight; QElectroTech is nimble, scriptable, and community-driven. A Siemens-style symbol library gives you industry-standard symbols and naming conventions so your schematics look familiar to controls engineers and comply with documentation norms. qelectrotech siemens library

Default QET installations come with generic symbols (relays, fuses, motors). However, Siemens uses specific part numbers (MLFB), proprietary PLC addresses (I/Q/M memory), and specific graphical styles for their S7-1200, S7-1500, and LOGO! devices. Manually creating these 200+ symbols is tedious.

A messy library kills design speed. Use this folder structure under ~/qelectrotech/elements/: | Device Family | Typical Symbols Available |

Siemens_AG/
├── Automation/
│   ├── PLC_S7-1200/
│   │   ├── CPU_1211C_ACDC_RLY.elmt
│   │   ├── SM_1221_DI8.elmt
│   │   └── CM_1241_RS485.elmt
│   ├── PLC_S7-1500/
│   └── LOGO/
│       ├── LOGO_12_24RCE.elmt
│       └── LOGO_AM2.elmt
├── Protection/
│   ├── MCB_5SY/
│   ├── MCCB_3VA/
│   └── Motor_Starter_3RV/
├── Switching/
│   ├── Contactor_3RT/
│   └── Relay_3RH/
└── HMI/
    ├── KTP400_Basic_PN/
    └── KTP700_Comfort/

Pro Tip: Edit the .qet project file in a text editor to batch-replace generic components with your new Siemens paths.

QElectroTech is a Qt-based software for creating electrical schematic diagrams. It is lightweight, cross-platform (Windows/Linux/Mac), and community-driven. The holy grail: Export QET schematics to Siemens

The library is not an official Siemens product but a community-driven collection. Typical components include:

| Category | Example Components | |----------|--------------------| | PLC & Controllers | SIMATIC S7-1200, S7-1500, S7-300 CPU modules, digital/analog I/O modules, signal boards | | HMI | SIMATIC HMI panels (Basic, Comfort, Mobile panels) | | Drives | SINAMICS G120, V20, S110 frequency converters | | Motor Starters | SIRIUS (3RT contactors, 3RU overload relays, 3RV circuit breakers) | | Power Supplies | SITOP PSU100C, PSU200M, LOGO!Power | | Protection Devices | 5SL miniature circuit breakers (MCBs), 5SU residual current devices (RCDs) | | Relays & Timers | 3RH contactor relays, 3RP timing relays | | Connectors & Terminals | SIMATIC TOP Connect, SENTRON terminal blocks | | Sensors | SIMATIC ET 200pro, proximity switches, photoelectric sensors |