Kuka · KR C4 Controller
This fault indicates that the supply voltage to the KPP/KSP drive has dropped below 300 V. Insufficient supply voltage can lead to unstable drive operation, undervoltage faults, and system shutdowns.
Click steps to track your progress.
Inspect the main power lead for continuity and proper connection.
Check the KPP cabling connecting to the power supply for damage or loose connections.
Reinitialize the drive bus by cycling Power Off / Power On.
Check the KPP module for any status indicators.