Finding SINAMICS G120 CAD Dimension Drawings in DXF Format

Overview

Mechanical integration of a SINAMICS G120 variable frequency drive into a control cabinet requires accurate, scaled 2D dimension drawings. Engineers preparing cabinet layouts, mounting plate cutouts, and clearance calculations consistently report that the official 2D CAD drawings in DXF (Drawing Interchange Format) or DWG (Drawing) format are difficult to source compared with the equivalent 3D STEP or PDF datasheet content. Siemens ships the dimensional data primarily in two official channels: the consolidated Siemens Support entry 54109111 — CAD, CAE and EPLAN Electric P8 Macros, and the per-order DT-Configurator (Drive Technology Configurator) drawable bundle. This reference describes the exact paths to both channels, the file formats and frame sizes they cover, and the verification steps that prevent the most common field error — wrong drawing scale after import.

SINAMICS G120 Frame Sizes and Hardware Identification

Before downloading any drawing, confirm the frame size (FS) of the Power Module. The frame size determines the hole pattern, mounting depth, and cooling clearance values in every official macro. Use the order number (MLFB) on the device label and the catalog key D11.1 (2008 edition, page 3/34 through 3/38) as the cross-reference. The current SINAMICS G120 catalog uses the same FSA–FSF designation logic, although several modernized Power Modules (e.g., PM240-2, PM250) inherit the FSA-FSG geometry that originated in MM4.

The 2D dimensional drawing must be selected against the exact frame size. A common cause of cabinet rework is using an FSA drawing for an FSB Power Module, or substituting PM240 geometry for PM240-2 — the latter has different mounting depths because the heatsink fins are taller in the -2 series.

Primary Source: Siemens Support Entry 54109111

Siemens consolidates the official mechanical CAD data, CAE macros, and EPLAN Electric P8 project fragments for the MICROMASTER 4, SINAMICS G110, and SINAMICS G120 product families in a single Support document. Entry 54109111 is the canonical reference and is updated whenever a new frame size or a new Power Module variant is released.

Access path (verified URL):

1. Open https://support.industry.siemens.com/cs/document/54109111/micromaster-4-sinamics-g110-g120-cad-cae-and-eplan-electric-p8-macros.
2. Authenticate with a Siemens Support account (free of charge; the same login works for Industry Online Support and SiePortal).
3. Open the Downloads tab. Several ZIP archives are listed; each archive corresponds to a product family and a CAE platform.
4. Download the archive tagged CAD macros DXF/DWG (filename pattern: MM4_G110_G120_CAD_DXF.zip or similar). The same archive also contains EPLAN Electric P8 macro files (*.ema) and 2D DXF/DWG files for every frame size and a representative selection of Control Units (CU230P-2, CU240B-2, CU240E-2, CU250S-2).

Contents of the ZIP (typical layout):

Alternative Source: Drive Technology Configurator (DT-Configurator)

The DT-Configurator is the engineering tool used by Siemens sales engineers and by integrators to assemble a complete drive order, including the Power Module, Control Unit, optional Operator Panel (BOP-2, IOP-2, IOP-2 Handheld), and the appropriate line filter, line reactor, or braking resistor. Every assembled configuration can be exported as a 2D dimension bundle.

Access path:

1. Open the DT-Configurator web app at https://www.siemens.com/dt-configurator.
2. Select Drive Technology > Low-voltage converters > SINAMICS G120.
3. Configure the drive by clicking through the wizard: line voltage, power rating, motor current, Control Unit type, optional modules.
4. In the Result view, open the CAD data section. The configurator produces a ZIP containing a DXF for the Power Module and a separate DXF for the Control Unit. Both are drawn to scale 1:1 in millimetres.
5. Click Generate drawing — the configurator streams the DXF to the browser. Generation typically takes 20 – 90 seconds; older web connections occasionally time out at 60 seconds. Refresh once before re-issuing the request.

Alternative Source: SiePortal / Industry Mall Product Documentation

Engineers who do not need the configurator's BOM output can obtain the same dimension drawings through SiePortal (formerly the Industry Mall). The product page for any SINAMICS G120 article lists a Documentation tab; the CAD data / dimension drawings link is hosted at the bottom of that tab.

Access path:

1. Open SiePortal and search by the SINAMICS G120 order number (e.g., 6SL3210-1PE21-1UL0 for a PM240-2 1.5 kW 400 V 3AC Power Module).
2. Open the product page and click Documentation.
3. Scroll to CAD data and dimension drawings. The site offers a .zip per order number containing DXF and 3D STEP files.
4. Download the ZIP. Files are pre-rendered and typically 200 kB – 2 MB.

Limitations of the SiePortal channel:

• The ZIP contains elementary DXF views (front, side, top, mounting cutout) and the wiring diagram. It does not always contain the full EPLAN macro set; for that, fall back to entry 54109111.
• Drawings in this channel are not drawn to scale in the sense of being a panel layout; they are reference geometry only. Always confirm scale by measuring a known dimension (e.g., a 100 mm heatsink fin pitch) on import.

Importing DXF Files into AutoCAD and Verifying Scale

The most common integration problem reported with the 54109111 archive is a mis-scaled drawing after import into AutoCAD, BricsCAD, or ZWCAD. The cause is unit and insertion-point mismatch, not the source data.

Verification procedure in AutoCAD 2018 – 2024:

1. Open the DXF. The Import dialog prompts for insertion units. Set Millimeters.
2. Place the drawing at coordinates 0,0 in model space.
3. Use the DIST command to measure a known dimension. The heatsink fin pitch on every SINAMICS G120 Power Module is a uniform 10 mm centre-to-centre. The mounting-hole spacing for FSA is 50 mm vertical; for FSB–FSF it is documented in the dimension drawing itself.
4. Compare the measured value to the catalogue value. If a 100 mm catalogue feature measures 100 mm, the import is correct. If it measures 4 in or 254 mm, the import was performed with imperial default units and the drawing must be scaled by 25.4.
5. Save the corrected file as a DWG in your office standard template before adding panel annotations.

For non-AutoCAD CAD packages, use the same procedure. LibreCAD and ZWCAD both honour the $INSUNITS header variable; set it to 4 (millimetres) before opening the DXF if the package does not present a unit selection dialog.

Importing DXF Files into EPLAN Electric P8

The /EPLAN_P8 folder of the 54109111 archive is the recommended path for EPLAN users. The archive contains pre-built macro files that bind the 2D mechanical graphic, the terminal diagram, and the device tag into a single insertable part. Manual DXF import is only required when an EPLAN macro is not available for the specific frame size.

Manual DXF import into EPLAN Electric P8 2.9 / 2022 / 2024:

1. Open the target EPLAN project and navigate to the cabinet layout navigator.
2. Choose Insert > Graphic > DXF/DWG. Browse to the relevant .dxf from the 54109111 archive.
3. In the import dialog, set Unit of measurement to mm and Scale to 1:1.
4. Map layers. EPLAN's default DXF import maps 0 to EPLAN_GRAPHIC; Siemens drawings use the AutoCAD standard layers 0, OUTLINE, DIM, TEXT. Map OUTLINE to EPLAN_GRAPHIC and DIM to EPLAN_DIMENSION.
5. Place the graphic at the mounting location. The coordinates inside the DXF are absolute model-space coordinates; snap to the lower-left mounting hole for alignment with the cabinet layout grid.

Handling Specific Frame Sizes and Cooling Clearance

Cooling clearance is the dimension that is most often missed in cabinet design. The dimensional drawings in the 54109111 archive show only the device outline; the cooling clearance values are stated in the operating instructions, not the CAD macro. The two documents must be cross-checked before any layout is finalised.

Add these clearances as a keep-out zone in the panel layout. The CAD macro only supplies the device outline; the keep-out is a separate dimension that the engineer must apply at layout time.

Troubleshooting Matrix

Verification Checklist Before Releasing the Cabinet Layout

1. Frame size on the drawing matches the order number on the device label.
2. Drawing scale is 1:1 in millimetres, confirmed by measuring a known 10 mm fin pitch and a documented mounting-hole spacing.
3. Cooling clearance keep-out zone is present in the layout and matches the operating-instructions table for the specific frame size.
4. Front clearance (typically 100 mm) is sufficient to open the terminal cover and to insert / remove the Control Unit from the Power Module.
5. If the Control Unit is a CU250S-2 with a plugged-on encoder interface, the additional 30 mm behind the CU must be reserved for the encoder cable bend radius.
6. For push-through mounting (PM240-2 FSA – FSC with the heatsink outside the cabinet), the cutout dimension in the mounting plate is taken from the dimension drawing's panel cutout view, not the outline view.
7. The dimension drawing is from the same macro package revision as the device firmware described in the project BOM. Mixing drawings from a 2010 macro package with a 2023 PM240-2 device can produce a 5 – 10 mm mounting depth error.