Cause Possible SolutionsThe wrong password was entered.• If the password entered to A1-04 does not match the password saved to A1-05, then drivesettings cannot be changed.• Reset the password.If you cannot remember the password:• Scroll to A1-04. Press STOP and simultaneously. Parameter A1-05 will appear.• Set a new password to parameter A1-05.Undervoltage was detected. • Check the drive input power voltage by looking at the DC bus voltage (U1-07).• Check all main circuit wiring.u Motor Does Not Rotate Properly after Pressing RUN Button or after Entering ExternalRun Commandn Motor Does Not RotateCause Possible SolutionsThe drive is not in the Drive Mode.• Check if the DRV light on the digital operator is lit.• Enter the Drive Mode to begin operating the motor. Refer to The Drive, Programming, andClock Adjustment Modes on page 114.The LO/RE key was pushed.Stop the drive and check if the correct frequency reference source is selected. If the operator keypadshall be the source, the LO/RE key LED must be illuminated. If the source is REMOTE, it mustbe off.Take the following steps to solve the problem:• Push the LO/RE key.• If o2-01 is set to 0, then the LO/RE key will be disabled.Auto-Tuning has just completed.• When Auto-Tuning completes, the drive is switched back to the Programming Mode. The Runcommand will not be accepted unless the drive is in the Drive Mode.• Use the digital operator to enter the Drive Mode. Refer to The Drive, Programming, and ClockAdjustment Modes on page 114.A Fast Stop was executed and has not yet been reset. Reset the Fast Stop command.Settings are incorrect for the source that provides theRun command.Check parameter b1-02 (Run Command Selection).Set b1-02 so that it corresponds with the correct Run command source.0: Digital operator1: Control circuit terminal (default setting)2: MEMOBUS/Modbus communications3: Option cardThere is faulty wiring in the control circuit terminals.• Check the wiring for the control terminal.• Correct wiring mistakes.• Check the input terminal status monitor (U1-10).The drive has been set to accept the frequencyreference from the incorrect source.Check parameter b1-01 (Frequency Reference Selection 1).Set b1-01 to the correct source of the frequency reference.0: Digital operator1: Control circuit terminal (default setting)2: MEMOBUS/Modbus communications3: Option card4: Pulse train input (RP)The terminal set to accept the main speed reference isset to the incorrect voltage and/or current. Refer to Terminals A1, A2, and A3 Input Signal Selection on page 101.Selection for the sink/source mode and the internal/external power supply is incorrect. Check jumper S3. Refer to Sinking/Sourcing Mode for Digital Inputs on page 101.Frequency reference is too low. • Check the frequency reference monitor (U1-01).• Increase the frequency by changing the maximum output frequency (E1-09).Multi-function analog input is set up to accept gain forthe frequency reference, but no voltage (current) hasbeen provided.• Check the multi-function analog input settings.• Check if analog input A1, A2, or A3 is set for frequency reference gain (H3-02, H3-10, H3-06= 1). If so, check if the correct signal is applied to the terminal. The gain and the frequencyreference will be 0 if no signal is applied to the gain input.• Check if H3-02, H3-10, and H3-06 have been set to the proper values.• Check if the analog input value has been set properly. (U1-13 to U1-15)The STOP key was pressed when the drive was startedfrom a REMOTE source.• Pressing the STOP key will decelerate the drive to stop.• Switch off the Run command and then re-enter a new Run command.• Set o2-02 to 0 to disable the STOP key.6.10 Troubleshooting without Fault Display330 YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
