E13.

Power Recovery Restart Prevention (USP) Error

Omron · MX2 Series Type V2 Compact Inverter

What does E13. mean?

The USP error occurs when the inverter's power recovery restart prevention function is activated. This specific fault triggers if the power supply is turned on while the RUN command is already active, preventing unintended motor restarts after a power interruption. It's a safety feature designed to ensure controlled startup.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Check wiring for the RUN command input to ensure no unintended signal is present.

  2. 4

    Configure the system to reset STO input when the operator intentionally requests a restart, in compliance with EN/IEC 60204-1.

Source: Omron MX2 Series Type V2 Compact Inverter
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