KEB COMBIVERT F5 Instruction Manual

Also see for COMBIVERT F5: INSTALLATION GUIDELINE Installation manual Instruction manual Instruction manual Installation manual

Contents

164Diagnostics and TroubleshootingProblem Cause/Solution/TroubleshootMotor Draws High Current Verify the brake picks and does not drag and that there are noother mechanical issues preventing the motor from rotating freely.Verify correct motor data.For PM motors, verify the correct relationship between the MotorRated Speed, Motor Rated Frequency and the number of motor polesRefer to Section 5.6 for further description.Perform a Motor Learn if this has not already been completed.For PM motors, verify the encoder/motor pole position is correct.Make note of the present LF.77 Encoder Pole Position value andrelearn as needed. Refer to Encoder slippage/mounting (PMmotors) for additional information.For PM motors, the encoder channel A/B phasing (LF.28 SwapEncoder Channels) must be correct and the encoder/rotor positionlearned with the correct setting.For induction motors, set LF.30 Control Mode to Open Loop V/Hz todetermine if the issue is due to encoder, encoder settings or speedcontrol settings.For open loop induction motors, the Low Speed Torque Boost may needto be decreased or increased.