Hi5 controllermaintenanceHi5 Troubleshooting Manual1. Troubleshooting1.1. Troubleshooting Solution1.1.3. E0011 AMP overvoltage (P-N)1.1.3.1. OutlineOn this page1.1.3.1. Outline1.1.3.1. Outline Direct current voltage (P-N) of Servo Drive Unit that drives the motor exceeded the set value.