MELSEC-Q QY42P Output Module External Power Supply Change Technical Bulletin

This technical bulletin announces a change in the external power supply current for the MELSEC-Q series QY42P output module, increasing from 20mA to 40mA at 24VDC per common, effective from December 2024. Users are advised to check the hardware version (serial number prefix "2612" or later) and refer to the I/O Module Type Building Block User's Manual to assess potential impacts such as increased heat generation.