Resolving CU240E-2 PM230 IP55 Pairing Failures in TIA Portal

1. Problem Summary

Engineers integrating a SINAMICS G120 PM230 IP55 Power Module with a CU240E-2 PN F Control Unit frequently report that the PM230 will not drop into the Control Unit slot inside the TIA Portal device view. The hardware combination is mechanically and electrically supported by Siemens through the so-called long-distance connector, yet the engineering tool refuses to commit the topology and the drive remains offline.

The symptom appears most often when:

• TIA Portal V13 SP1 (or V14 / V15) is used without an up-to-date SINAMICS Hardware Support Package (HSP).
• The Control Unit firmware is below V4.7.3.
• The PM230 IP55 article number was not added to the project device catalog after TIA was installed.

2. Affected Components and Article Numbers

Verify the exact article numbers of every component in the cabinet before applying the fix below. The PM230 IP55 series uses a separate catalog branch from the standard PM230 push-through modules, and this is the root reason older TIA catalogs cannot resolve it.

3. Root Cause Analysis

Three independent root causes can produce the same symptom. Diagnose all three before changing any setting.

3.1 TIA Portal Catalog Database

TIA Portal V13 SP1 shipped in March 2015 with the G120 device database frozen at firmware V4.5. The PM230 IP55 Power Module was released in production volume during 2016 and was added to the catalog only with HSP_0183. Until that HSP is installed, the PM230 IP55 article (6SL3223-0DE25-5AG1) does not exist in the hardware catalog and the device view cannot recognize the slot target.

3.2 Control Unit Firmware

According to the Siemens compatibility statement for the SINAMICS G120P PM230 Power Module IP55, the PM230 IP55 may be operated with a Control Unit from FW V4.4 and higher. However, the interoperability layer required by the TIA V13 SP1 device view was finalized only in CU FW V4.7.3. Operating a CU240E-2 at V4.4, V4.5, V4.6 or V4.7.0–4.7.2 against a PM230 IP55 yields a silent drop-out in the slot.

3.3 Long-Distance Connector (Mechanical)

The PM230 IP55 has an integrated heatsink and IP55 housing that prevents direct mounting of a standard CU240E-2. Siemens sells a "long-distance connector" (the 6SL3260-1DB00-0AA0 kit) that adapts the CU onto the PM230 housing with a 0.6 m shielded umbilical. This connector carries:

• 24 V power rail for the CU electronics
• STO enable loop (24 V safe torque off)
• Encoder interface (HTL/TTL depending on sensor)
• PE and signal shield bonding

The connector is mechanically and electrically sound. It does not affect PROFINET wiring, which still runs on a separate PROFINET cable from the CU to the field. Engineers frequently confuse a wiring problem on the long-distance connector with a TIA catalog problem; always verify the connector first.

4. SINAMICS G120 Control Unit / Power Module Compatibility Matrix

The matrix below summarizes the firmware state required for the CU240E-2 to accept each PM230 family in the TIA device view. Sourced from the official Siemens support entry for the SINAMICS G120P PM230 Power Module IP55.

Reference: SINAMICS G120P PM230 Power Module, IP55 – Siemens Support Entry 109744235.

5. Required Firmware Update – CU240E-2 to V4.7.3

If the on-board CU is below V4.7.3, the slot drop will still fail even after the HSP is installed. Update the Control Unit using a Siemens SINAMICS SD card (6SL3254-0AM00-0AA0) or via the integrated Web server.

5.1 Update Procedure via SD Card (recommended)

1. Download SINAMICS_G120_CU240E2_V473.zip from the Siemens Support website and unpack the firmware files to the SD card root. The folder must contain FW4.7.3 and a valid LGSEIM.0XX file.
2. Power down the drive and insert the SD card into the CU240E-2 slot.
3. Power up. The CU boots, recognizes the FW update, and the RDY LED flashes green/orange at 2 Hz. Status display reads UPD.
4. Wait for the LED to go steady green (typically 90–180 s). Do not remove power during the update.
5. Cycle power. Verify the new firmware with parameter r0018 = 4.7.3.

5.2 Update Procedure via Web Server

1. Connect a laptop to the CU240E-2 service port (X127) or to the PROFINET network.
2. Set the laptop IP to 192.168.0.10 / 24. Default CU address is 192.168.0.2.
3. Open a browser and navigate to https://192.168.0.2.
4. Navigate to Update Firmware → File Upload, choose the unpacked FW folder, and confirm the upload.
5. Wait for the upload progress bar to reach 100 % and the device to perform an automatic restart.

6. Installing the SINAMICS Hardware Support Package

The HSP injects the PM230 IP55 article number into the TIA hardware catalog and supplies the matching GSDML file for PROFINET.

6.1 Locate the Correct HSP

• HSP_0183 — first release supporting PM230 IP55 with CU240E-2 (TIA V13 → V15)
• HSP_0280 — required for TIA V16 → V18 and for PM230 IP55 frames FSB–FSC
• HSP_0293 — bundled into TIA V17 Update 4 and later

6.2 Install the HSP

1. Close all TIA Portal instances.
2. Run Siemens_TIA_Startdrive_HSP_xxxxx.exe as Administrator.
3. Follow the installer prompts. The package drops into C:\Program Files\Siemens\Automation\HSP.
4. Restart TIA Portal. Open Options → Manage HSP and confirm the new package is listed as Active.
5. Open Options → Install Device Description Files (GSD) and verify the PM230 IP55 GSD is present.

7. TIA Portal Device Configuration

Once the HSP is active and the CU is at V4.7.3, build the topology as follows.

7.1 Add Devices to the Project

1. Open the project in TIA Portal.
2. From the hardware catalog, navigate to Drives & Startdrive → SINAMICS → G120 → Control Units → CU240E-2 PN F. Drag 6SL3244-0BB12-1FA0 into the network view.
3. From the same catalog branch, navigate to Power Modules → PM230 IP55 → 3AC 380–480 V. Drag 6SL3223-0DE25-5AG1 into the device view of the CU240E-2, dropping it into the slot labeled "Power Module".
4. If the slot accepts the PM, the device view will show a green check mark. If it still refuses, the most common reason is a remaining FW mismatch — re-check r0018.

7.2 Configure PROFINET Topology

1. Assign the IP address (e.g. 192.168.0.10), subnet mask 255.255.255.0, and PROFINET device name (e.g. g120-pm230-ip55) on the CU properties dialog.
2. Select the appropriate standard telegram. For PM230 IP55 + CU240E-2 PN F, use Telegram 1 (speed setpoint, 16-bit) or Telegram 3 (speed setpoint + 2 process data words) as a safe default. For servo-class control, SIEMENS Telegram 352 is also valid but requires FW ≥ V4.7.
3. Assign the IO controller (S7-1500 / S7-1200 CPU) and download the hardware configuration.

7.3 Startdrive Commissioning

1. Right-click the G120 device and choose Startdrive → Online & Diagnostics.
2. Run the Commissioning Wizard. The wizard will detect the PM230 IP55 and apply the matching power-stack data automatically.
3. Verify the auto-populated parameters:
   • p0201 = 1 (power unit code recognized)
   • p0205 = 1 (line filter active)
   • p0206 = 380 to 480 (line voltage)
   • p0304 = 400 (default motor voltage)
   • p0305 = 11.6 (default motor current, derived from 5.5 kW rating)
4. Run Motor Identification (p1910) for best results.

8. Long-Distance Connector Wiring

The 6SL3260-1DB00-0AA0 connector kit ships with three sub-harnesses. Wire them per the table below; mis-wiring causes the CU240E-2 to log F08501 (encoder fault) or F30003 (DC-link undervoltage) at start-up.

9. Verification Procedure

1. In Startdrive, read r0018 — confirm 4.7.3 (or higher 4.7.x).
2. Read r0200 — confirm it returns the PM230 IP55 article number 602 (internal power-stack code).
3. Read r0019 — confirm the operating state is 0 (commissioning mode) or 1 (ready).
4. From the PLC, toggle the drive control word bits:
   • STW1.0 = ON/OFF1
   • STW1.1 = OFF2 (Coast stop)
   • STW1.2 = OFF3 (Fast stop)
   • STW1.3 = Enable operation
5. Read ZSW1 back to confirm the drive reaches 0x0317 (Ready, Enabled, Setpoint reached).
6. Execute a slow-speed jog (5 Hz) for 30 s and monitor r0021 (actual speed) and r0032 (active current).

10. Troubleshooting Matrix

11. Best-Practice Recommendations

• Pin TIA Portal version: lock the engineering environment to a single TIA version across the project. Mixing TIA V13 SP1 and V17 project files causes silent catalog mismatches.
• Pre-load the SD card: when commissioning multiple cabinets, flash the SD card once with FW V4.7.3 and insert into every CU before power-up. This removes the on-site FW update bottleneck.
• Document the long-distance connector wire map: print the table in Section 8 and tape it inside the cabinet door. Field engineers frequently swap encoder pairs during service.
• Maintain a parameter backup: after every successful commissioning, save the parameter set with Startdrive → Load to PG/PC. The parameter set is the only recovery path after a corrupted FW update.
• Use Telegram 3 by default: Telegram 3 carries the control word, status word, and one process data word in each direction. It is the lowest-risk starting telegram for PM230 IP55 applications.

12. Frequently Asked Questions