Sinamics G120 GSD Installation Issue in Step 7

You've installed the GSD file for the Sinamics G120 but it's not appearing in your Step 7 hardware configuration, and instead you only see G130/G150. This is a common issue often related to the GSD file version or hardware support package.

Here's how to resolve it:

1. Verify GSD File: Ensure you've downloaded the correct GSD file specifically for the G120 with CU240X and your Step 7 version. The file you mentioned (G120_CU240X_DP_V3_21.zip) is relatively old.
2. Download Latest GSD: Download the latest GSD file from the Siemens Support website: Sinamics G120 GSD Files.
3. Hardware Support Package: Ensure your Step 7 installation has the required Hardware Support Package (HSP) installed that supports the Sinamics G120. Check the HSP version compatibility with your Step 7 version.
4. Reinstall GSD: After downloading the latest GSD, completely remove the previously installed GSD file from your Step 7 project and PC. Then, reinstall the new GSD file.
5. Restart Step 7: Restart Step 7 after GSD installation.

Important Note: If you're using a very old version of Step 7, consider upgrading to a more recent version for better compatibility and support.

For further assistance, please refer to Siemens documentation or create a support request via SiePortal: Siemens Support

Sinamics Drive - Hidden Expert Parameters

Hello! As Siemens Self Support, integrated with SiePortal, I understand you're encountering issues with accessing all parameters in the BOP (Basic Operator Panel) of your Sinamics drive, specifically expert parameters like P2040 and P0700 related to PROFIBUS.

This is a common experience for new Sinamics users. Here's a breakdown of how to resolve this:

1. Parameter Visibility

Expert parameters are intentionally hidden in the BOP by default to prevent accidental modification. You need to explicitly enable their visibility.

2. Enabling Expert Mode

Follow these steps in the BOP:

1. Navigate to 1-0 Parameter Block
2. Set P1000 = 1 (Enable expert parameters)

Caution: Enabling expert parameters allows access to settings that, if changed incorrectly, can impact drive functionality or safety. Proceed with caution and consult relevant documentation.

3. Accessing Parameters

After setting P1000 = 1, restart the drive (power cycle). The previously hidden parameters, including P2040 and P0700, should now be visible in the BOP under the corresponding parameter groups.

4. Further Support & Documentation

• SiePortal: Sinamics Drive Commissioning - Overview
• Manuals: Access detailed manuals for your specific drive model via Siemens Industry Online Support.
• Knowledge Base: Search for specific parameter information and troubleshooting guides on SiePortal.

If you continue to experience issues, please provide your exact drive model (e.g., Sinamics S120, G120) and firmware version for more tailored assistance.

Sinamics G120 - Analog Speed Setpoint with Profibus Control

Hello! As Siemens Self Support, integrated with SiePortal, I can help you with your Sinamics G120 configuration.

Answers to your questions:

1. P1000 vs. P1070: Both parameters select the speed setpoint source. P1000 generally selects the source for the *main* speed setpoint, while P1070 is often used for a *secondary* or alternative setpoint. Using P1070 allows for easier switching/selection of setpoint sources without affecting core configuration.
2. PLC Setpoint Conflict: Yes, the PLC continuing to send speed setpoints *will* create a conflict. The inverter will likely prioritize whichever source is selected in P1000/P1070. You may see erratic behavior if not managed. It's recommended to either disable the speed setpoint transmission from the PLC for the specific drive, or scale the PLC setpoint to a value that won't interfere with the analog input range.
3. P0922 Protection: P0922 is the "Parameter Protection" setting. If set to a value other than 0, it can prevent modification of certain parameters, including P1070, through the Basic Operator Panel (BOP). This is to prevent accidental changes that could disrupt Profibus communication.
   To resolve this: You'll need to temporarily set P0922 to '0' (no protection) to modify P1070, then restore it to its original value afterward. Important: Note the original value of P0922 before changing it!

For detailed parameter descriptions and configuration guidance, please refer to the Sinamics G120 documentation on SiePortal: Sinamics G120 Documentation.

Sinamics G120 PM240 Modbus RTU - Limited Address Range

You are experiencing limited Modbus RTU address access with your Sinamics G120 PM240 (PM240E-2, 6SL3244-0BB12-1BA1) using Macro 15.

The issue of only seeing addresses 40340-40349 and inability to write to 40100 (Start/Stop - 1150/1151) is likely due to parameter P0700 (Modbus access mode) being incorrectly configured.

Resolution

1. Check P0700: Verify that P0700 is set to allow access to the relevant parameter group containing the Start/Stop command (40100). Typically, a setting allowing access to "Process Data" or "Parameter Access" is required.
2. P0701 - P0704: Ensure these parameters (Modbus Slave addresses) are appropriately set for your network configuration.
3. Macro Configuration: Confirm Macro 15 doesn't have any restrictions on Modbus access.
4. Refer to Documentation: Consult the Sinamics G120 documentation for detailed information on Modbus RTU configuration, specifically section regarding P0700 and parameter access: Sinamics G120 Firmware Manual

For further assistance, please provide your complete parameter configuration (P0700-P0704) and a description of your Modbus master device.

Regarding Dim SF LED and Capacitor Issues in Control Units

Dear Guest,

Thank you for reaching out. We understand you're experiencing issues with multiple control units exhibiting a dim SF LED, traced to swollen/burst electrolytic capacitors. This is a known issue that can occur, especially in environments with high operating temperatures or voltage fluctuations.

Known Issue & Potential Causes:

• Capacitor Aging: Electrolytic capacitors have a finite lifespan and degrade over time, particularly under stress.
• Temperature: Elevated ambient temperatures significantly reduce capacitor life.
• Voltage: Excessive or fluctuating voltage can lead to premature capacitor failure.

Recommendations:

• Preventative Maintenance: Implement a regular inspection schedule for the remaining 20 units, focusing on visual inspection of capacitors.
• Environmental Assessment: Evaluate the operating environment. Ensure adequate ventilation and stable power supply. Consider temperature monitoring.
• Capacitor Replacement: Replace the capacitors with high-quality, long-life equivalents. See Siemens Support Article for details on component selection.
• Power Supply Check: Verify the power supply voltage is within specified limits and is stable.

We are constantly collecting data on field issues. Your report helps us improve product reliability. Please report any further occurrences via SiePortal for tracking purposes.

Sincerely,

Siemens Self Support

Sinamics G120 - F3003 Error & Voltage Issue

The F3003 error typically indicates undervoltage. Receiving 380V with a 400V drive/motor setup can indeed trigger this fault.

Here's how to address this:

1. Verify Supply Voltage: Confirm the actual supply voltage at the drive terminals. Ensure it consistently stays within the acceptable range (typically 380V-415V, check drive documentation).
2. Drive Parameter Check: Using STARTER, verify the drive's voltage settings (P0700, P0701) are correctly configured for 400V operation.
3. Boost Voltage (P1000): Consider slightly increasing the boost voltage parameter (P1000) within acceptable limits to compensate for the voltage drop. Caution: Do not overboost.
4. Wiring Inspection: Check for loose connections, undersized cabling, or excessive cable length between the power supply and the drive/motor.
5. Network/Supply Issues: Investigate the power supply network for voltage dips or instability.

Important Resource: For detailed troubleshooting steps and parameter explanations, please refer to the Sinamics G120 Firmware Manual and the F3003 Fault Description in SiePortal.

If the problem persists, consider contacting Siemens Technical Support with your drive type and STARTER project file for further assistance.

Sinamics G120 Ramp Down Time Extension

Dear Customer,

You are correct to observe that the Sinamics G120 (CU240E-2 PN) can automatically extend the ramp-down time (P1121) even if it's above the minimum set in P1127. This behavior is by design and relates to braking power limitations, as you've noted in the documentation.

The drive prioritizes safe deceleration. If the calculated braking power based on your motor, load, and brake resistor is insufficient to decelerate within the set P1121 time, the drive automatically increases the ramp-down time to prevent overvoltage or other fault conditions.

Even if you believe you have the correct brake resistor, several factors can influence effective braking power:

• Load Inertia: Higher load inertia requires more braking torque.
• Motor Parameters: Incorrect motor parameters can lead to miscalculations.
• DC Link Voltage: High DC link voltage can reduce braking capacity.
• Brake Resistor Condition: Ensure the brake resistor isn't degraded.

Recommendations:

• Double-check all motor parameters in the drive (P0700-P0729) for accuracy.
• Verify the brake resistor is sized correctly for your application according to the Sinamics G120 Brake Resistor Selection Guide.
• Monitor the DC link voltage during braking.
• Consider increasing the brake resistor size if necessary.

For detailed assistance, please consult the Sinamics G120 Firmware Manual, section on braking choppers and brake resistors.

Sincerely,
Siemens Self Support

Sinamics G120 - Error F0350 Resolution

Error F0350 ("Error configuring the vector for the drive") coupled with r0949 = 1 indicates an internal error related to the hardware configuration vector on your CU240E.

Troubleshooting Steps:

1. Check Hardware Consistency: Verify the Power Module (6SL3224-0BE31-1UA0) is fully compatible with the Control Unit (6SL3244-0BA10-0BA0). Refer to the Siemens Compatibility Tool for verification.
2. Firmware Update: Ensure both the CU240E and Power Module have the latest firmware. Outdated firmware can cause configuration issues. Download from Siemens Support.
3. Parameter Reset: As a last resort (after backing up parameters!), perform a parameter reset to factory defaults on the CU240E. This can clear corrupted configuration data.
4. Hardware Fault: If the error persists, a hardware fault within the CU240E is likely. Contact Siemens Technical Support for repair or replacement.

Important: Four-digit error codes like F0350 indicate a more serious issue than three-digit codes. Carefully follow the troubleshooting steps and document all findings before contacting support.

For further assistance, please open a support request via the Siemens Industry Online Support portal, referencing this error code and your hardware versions.

Fault Value 11 in SINAMICS Drives

Fault value 11 in SINAMICS drives typically indicates a DC link undervoltage. This means the voltage on the DC link (the energy storage component) has dropped below a safe threshold.

While adjusting parameter P8840 (fieldbus off-time) can sometimes mitigate issues related to communication-induced voltage drops, it's crucial to address the root cause of the undervoltage.

Possible Causes & Suggestions:

• Insufficient Supply Voltage: Verify the incoming supply voltage is within the specified range.
• Large Loads/High Current Demand: Check if the application demands excessive current, causing a voltage drop.
• Line Impedance: Long or undersized supply cables can contribute to voltage drops.
• Brake Resistor Issue: A shorted or malfunctioning brake resistor can cause DC link issues.
• Drive Hardware Fault: In rare cases, a fault within the drive's power module may be the cause.

Where to find more information:

You can find detailed information regarding fault values, troubleshooting steps, and parameter explanations in the following resources on the Siemens Industry Online Support portal (SiePortal):

• SINAMICS G120C Fault Messages
• SINAMICS Manuals & Documentation (Search for your specific drive model)

Please consult the documentation specific to your SINAMICS drive model for the most accurate information.

G120 (CU240b-2DP) - Terminal Control & PROFIBUS Simultaneously

Yes, it is possible to control a G120 drive (with CU240b-2DP) from the terminal and simultaneously read parameters via PROFIBUS. The drive supports both modes of operation concurrently.

However, be mindful of potential conflicts if both interfaces attempt to write to the same parameters simultaneously. Typically, reading via PROFIBUS won't interfere with terminal control, but simultaneous writes might require careful consideration of priority and timing.

Relevant Documentation:

• SINAMICS G120 Firmware Manual: Refer to the section on "Communication" and "Parameter Setting" for details on both terminal operation and PROFIBUS integration. You can find it on SiePortal: SINAMICS G120 Documentation
• SINAMICS G120 Parameter List: Check parameter groups P0700 (Communication) and P1000 (Parameter Setting) for relevant settings. Available on SiePortal.
• Application Example: Search SiePortal for application examples demonstrating combined terminal and PROFIBUS usage: Siemens Industry Online Support

Important Note: Ensure your PROFIBUS configuration is correct (e.g., correct node address, baud rate) and that the drive is properly integrated into the PROFIBUS network before attempting simultaneous operation.