Troubleshooting Without Fault Display; Troubleshooting Without Fault Display; Cannot Change Parameter Settings; Motor Does Not Rotate Properly After Pressing Run Button Or After Entering External Run Command - YASKAWA V1000 Series Technical Manual

6.9 Troubleshooting Without Fault Display

6.9

Troubleshooting Without Fault Display

This section is for troubleshooting problems that do not trip an alarm or fault.

Cannot Change Parameter Settings

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Cause
The drive is running the motor (i.e., the Run command is present).
The Access Level is set to restrict access to parameter settings.
The operator is not in the Parameter Setup Mode (the LED screen will
display "PAr").
A multi-function contact input terminal is set to allow or restrict
parameter editing (H1-01 through H1-10 = 1B).
The wrong password was entered.
Undervoltage was detected.
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Motor Does Not Rotate Properly after Pressing RUN Button or After Entering External Run Command

Motor Does Not Rotate
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Cause
The drive is not in the Drive Mode.
The LO/RE button was pushed.
Auto-Tuning has just completed.
A Fast-Stop was executed and has not yet
been reset.
Settings are incorrect for the source that
provides the run command.
One of the Safety Inputs is open.
There is faulty wiring in the control circuit
terminals.
The drive has been set to accept the
frequency reference from the incorrect
source.
The terminal set to accept the main speed
reference is set to the incorrect voltage and/
or current.
Selection for the sink/source mode is
incorrect.
Frequency reference is too low.
Multi-function analog input is set up to
accept gain for the frequency reference,
but no voltage (current) has been provided.
The STOP button was pressed when the
drive was started from a REMOTE source.
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• Stop the drive and switch over to the Programming Mode.
• Most parameters cannot be edited during run.
• Set the Access Level to allow parameters to be edited (A1-02 = 2).
• 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.
• When the terminal is open, parameters cannot be edited.
• Turn on the multi-function contact input set to 1B.
• 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
appear.
• Set a new password to parameter A1-05.
• Check the drive input power voltage by looking at the DC bus voltage (U1-07).
• Check all main circuit wiring.
• Check if the DRV light on the LED operator is lit.
• Enter the Drive Mode to begin operating the motor.
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 be
on, 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.
• When Auto-Tuning has completed, the drive is switched back to the Programming Mode. The Run command will not be accepted unless the drive is
in the Drive Mode.
• Use the LED operator to enter the Drive Mode.
Reset the Fast-Stop command.
Check parameter b1-02 (Run Command Selection).
Set b1-02 so that it corresponds with the correct run command source.
0: LED/LCD operator
1: Control circuit terminal (default setting)
2: MEMOBUS/Modbus communications
3: Option card
• Check for a short-circuit between terminals H1 and HC.
• See if one of the Safety Inputs is open.
• Correct any faulty wiring.
• Check the wiring for the control terminal.
• Correct wiring mistakes.
• Check the input terminal status monitor (U1-10).
Check parameter b1-01 (Frequency Reference Selection 1).
Set b1-01 to the correct source of the frequency reference.
0: LED operator
1: Control circuit terminal (default setting)
2: MEMOBUS/Modbus communications
3: Option card
4: Pulse train input (RP)
Check DIP switch S1. Next assign the correct input level to terminal A2 (H3-09).
Refer to Sinking/Sourcing Mode Switch on page
Check DIP switch S3.
• Check the frequency reference monitor (U1-01).
• Increase the frequency by changing the maximum output frequency (E1-09).
• 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 gain
and 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.
• 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.
Possible Solutions
STOP
button while pressing
Possible Solutions
Refer to The Drive and Programming Modes on page
Refer to The Drive and Programming Modes on page
Refer to Terminal A2 Switch on page
48.
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
at the same time. Parameter A1-05 will
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