Kuka · KR C4 Operating Instructions
The supply voltage for the KPP/KSP device has fallen below 300 V. This indicates an undervoltage condition on the power supply to the drive, which can prevent proper operation or lead to protective shutdown.
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Check the power lead connected to the KPP for disconnections or physical damage.
Inspect the KPP cabling for loose or damaged connections, ensuring secure contacts.
Reinitialize the drive bus by performing a Power Off / Power On cycle of the entire system.
Check the KPP module itself for internal faults if input voltage is verified correct.