Setup Troubleshooting And Possible Solutions - YASKAWA L1000A Technical Manual

4.7 Setup Troubleshooting and Possible Solutions

4.7 Setup Troubleshooting and Possible Solutions
This section describes troubleshooting problems that do not trip an alarm or fault.
Cannot Change Parameter Settings
Motor Does Not Rotate Properly after Pressing RUN Button or after Entering Exter-
nal Up/Down Command
Motor Gets Too Hot
Drive Does Not Allow Selection of Rotational Auto-Tuning
Encoder Offset (E5-11) Set During Auto-Tuning (Rotational or Stationary) Consistently Differs by 30 Degrees or More
Noise From Drive or Output Lines When the Drive is Powered On
Ground Fault Circuit Interrupter (GFCI)
The Safety Controller Does Not Recognize Safe Disable Monitor Output Signals (Terminals DM+ and DM-)
Riding comfort related problems
◆ Cannot Change Parameter Settings
Cause
The drive is running the motor (i.e., the Up/Down command is
present).
The Access Level is set to restrict access to parameter settings.
The operator is not in the Parameter Setup Mode.
The wrong password was entered.
Undervoltage was detected.
◆ Motor Does Not Rotate Properly after Pressing RUN Button or after Entering
External Up/Down Command
■ Motor Does Not Rotate
Cause
The drive is not in the Drive Mode.
The button is enabled (o2-01=1) and was pushed.
Auto-Tuning has just completed.
A Fast Stop was executed and is not reset.
Settings are incorrect for the source that provides the Up/Down
command.
There is faulty wiring in the control circuit terminals.
The speed reference source setting is incorrect.
152
Symptom
Motor Does Not Rotate
Motor Rotates in the Opposite Direction from the Up/Down Command
• 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 (A1-01 = 2).
• Verify the digital operator mode, Drive or Programming mode?
• Switch to the Programming Mode. Refer to
• 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 the password is unknown:
• Scroll to A1-04. Press and press
STOP
• Set a new password to parameter A1-05.
• Check the drive main input voltage by looking at the DC bus voltage (U1-07).
• Check all main circuit wiring.
• Check if the DRV on the digital operator is displayed.
• Enter the Drive Mode. Refer to The Drive and Programming Modes on page
Stop the drive and check if the correct frequency reference source is selected. If the digital operator is 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 button.
• o2-01 is set to 0 by default, i.e. the LO/RE button is disabled.
• When Auto-Tuning completes, the drive is switched back to the Programming Mode. The Up/Down command will
not be accepted unless the drive is in the Drive Mode.
• Use the digital operator to enter the Drive Mode.
Reset the Fast Stop command.
Check parameter b1-02 (Up/Down Command Selection).
Set b1-02 so that it corresponds with the correct Up/Down command source.
0: Digital operator
1: Control circuit terminal (default setting)
2: MEMOBUS/Modbus communications
3: Option card
• Check the wiring for the control terminal.
• Correct wiring mistakes.
• Check the input terminal status monitor (U1-10).
Check parameter b1-01 (Speed Reference Selection).
Set b1-01 to the correct source of the speed reference.
0: Digital operator
1: Control circuit terminal (default setting)
2: MEMOBUS/Modbus communications
3: Option card
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
Possible Solutions
The Drive and Programming Modes on page
at the same time. Parameter A1-05 will appear.
Possible Solutions
98.
Refer to The Drive and Programming Modes on page
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