How To Fix EG491 - Check minimum primary voltage and maximum secondary voltage

SAP Error Message - Details

• Message type: E = Error

• Message class: EG - IS-U device management

• Message number: 491

• Message text: Check minimum primary voltage and maximum secondary voltage

What causes this issue?

The minimum primary current is lower than the maximum secondary
current.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Ensure that the minimum primary current is greater than the maximum
secondary current.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EG491 - Check minimum primary voltage and maximum secondary voltage ?

  The SAP error message EG491, which states "Check minimum primary voltage and maximum secondary voltage," typically relates to issues in the configuration of electrical equipment or systems within the SAP system, particularly in the context of energy management or electrical engineering modules.
  Cause:
  
  
  Voltage Configuration Issues: The error often arises when the primary and secondary voltage settings for a piece of equipment (like transformers or electrical devices) are not correctly configured. This could mean that the primary voltage is set below the minimum required level or the secondary voltage exceeds the maximum allowable level.
  
  
  Data Entry Errors: Incorrect data entry during the setup of equipment or during maintenance activities can lead to this error. 
  
  
  Incompatibility: The equipment being used may not be compatible with the specified voltage settings, leading to discrepancies.
  
  
  System Updates or Changes: Changes in system configurations or updates that affect voltage parameters can also trigger this error.
  
  
  Solution:
  
  
  Check Configuration Settings: Review the configuration settings for the equipment in question. Ensure that the primary and secondary voltage values are set correctly according to the specifications of the equipment.
  
  
  Verify Data Entries: Go through the data entries related to the equipment to ensure that there are no typographical errors or incorrect values.
  
  
  Consult Equipment Specifications: Refer to the manufacturer's specifications for the equipment to confirm the correct voltage ranges. Adjust the settings in SAP accordingly.
  
  
  System Testing: After making changes, conduct tests to ensure that the equipment operates within the specified voltage ranges without triggering the error.
  
  
  Consult Documentation: Check SAP documentation or help resources for any additional guidelines or troubleshooting steps specific to your version of SAP.
  
  
  Engage Technical Support: If the issue persists, consider reaching out to SAP support or your internal IT team for further assistance.
  
  
  Related Information:
  
  SAP Modules: This error is often encountered in modules related to Plant Maintenance (PM), Project System (PS), or other engineering-related modules.
  Documentation: SAP Help Portal and community forums can provide additional insights and user experiences related to this error.
  Training: Consider training sessions for users involved in data entry or configuration to minimize the risk of similar errors in the future.
  
  By addressing the configuration and ensuring that all data entries are accurate, you should be able to resolve the EG491 error effectively.