YASKAWA V1000 Series Technical Manual

Also see for V1000 Series: Option manual Quick start guide Installation & start-up manual Installation & start-up manual

Contents

YASKAWA V1000 Series Technical Manual Manual pdf 248 page image

6.9 Troubleshooting Without Fault DisplayThis section is for troubleshooting problems that do not trip an alarm or fault.u Cannot Change Parameter SettingsCause Possible SolutionsThe drive is running the motor (i.e., the Run command is present). • Stop the drive and switch over to the Programming Mode.• Most parameters cannot be edited during run.The Access Level is set to restrict access to parameter settings. • Set the Access Level to allow parameters to be edited (A1-02 = 2).The operator is not in the Parameter Setup Mode (the LED screen willdisplay “PAr”).• See what mode the LED parameter is current set for.• Parameters cannot be edited when in the Setup Mode (“STUP”). Switch modes so that “PAr” appears on the screen.A multi-function contact input terminal is set to allow or restrictparameter editing (H1-01 through H1-10 = 1B).• When the terminal is open, parameters cannot be edited.• Turn on the multi-function contact input set to 1B.The wrong password was entered.• If the password entered to A1-04 does not match the password saved to A1-05, then drive settings cannot be changed.• Reset the password.If you cannot remember the password:•Display parameter A1-04. Press the STOP button while pressing at the same time. Parameter A1-05 willappear.• 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 External Run Commandn Motor Does Not RotateCause Possible SolutionsThe drive is not in the Drive Mode. • Check if the DRV light on the LED operator is lit.• Enter the Drive Mode to begin operating the motor. Refer to The Drive and Programming Modes on page 61.The LO/RE button was pushed.Stop the drive and check if the correct frequency reference source is selected. If the operator keypad shall be the source, the LO/RE button LED must beon, if the source is REMOTE, it must be off.Take the following steps to solve the problem:• Push the LO/RE button.• If o2-01 is set to 0, then the LO/RE button will be disabled.Auto-Tuning has just completed.• When Auto-Tuning has completed, the drive is switched back to the Programming Mode. The Run command will not be accepted unless the drive isin the Drive Mode.• Use the LED operator to enter the Drive Mode. Refer to The Drive and Programming Modes on page 61.A Fast-Stop was executed and has not yetbeen reset. Reset the Fast-Stop command.Settings are incorrect for the source thatprovides the run command.Check parameter b1-02 (Run Command Selection).Set b1-02 so that it corresponds with the correct run command source.0: LED/LCD operator1: Control circuit terminal (default setting)2: MEMOBUS/Modbus communications3: Option cardOne of the Safety Inputs is open.• Check for a short-circuit between terminals H1 and HC.• See if one of the Safety Inputs is open.• Correct any faulty wiring.There is faulty wiring in the control circuitterminals.• 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 thefrequency reference from the incorrectsource.Check parameter b1-01 (Frequency Reference Selection 1).Set b1-01 to the correct source of the frequency reference.0: LED operator1: Control circuit terminal (default setting)2: MEMOBUS/Modbus communications3: Option card4: Pulse train input (RP)The terminal set to accept the main speedreference is set to the incorrect voltage and/or current. Check DIP switch S1. Next assign the correct input level to terminal A2 (H3-09). Refer to Terminal A2 Switch on page 50.Selection for the sink/source mode isincorrect. Check DIP switch S3. Refer to Sinking/Sourcing Mode Switch on page 48.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 toaccept gain for the frequency reference,but no voltage (current) has been provided.• Check the multi-function analog input settings.• Check if analog input A1 or A2 is set for frequency reference gain (H3-02/10 = 1). If so, check if the correct signal is applied to the terminal. The gainand the frequency reference will be 0 if no signal is applied to the gain input.• Check if H3-02 and H3-10 have been set to the proper values.• Check if the analog input value has been set properly.The STOP button was pressed when thedrive was started from a REMOTE source.• When the STOP button is pressed, the drive will decelerate to stop.• Switch off the run command and then re-enter a run command.• The STOP button is disabled when o2-02 is set to 0.6.9 Troubleshooting Without Fault Display248 YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)