152 YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - 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
External Up/Down Command
■ Motor Does Not Rotate
Symptom Page
Cannot Change Parameter Settings 152
Motor Does Not Rotate Properly after Pressing RUN Button or after Entering Exter-
nal Up/Down Command
Motor Does Not Rotate 152
Motor Rotates in the Opposite Direction from the Up/Down Command 153
Motor Gets Too Hot 153
Drive Does Not Allow Selection of Rotational Auto-Tuning 153
Encoder Offset (E5-11) Set During Auto-Tuning (Rotational or Stationary) Consistently Differs by 30 Degrees or More 153
Noise From Drive or Output Lines When the Drive is Powered On 153
Ground Fault Circuit Interrupter (GFCI) 154
The Safety Controller Does Not Recognize Safe Disable Monitor Output Signals (Terminals DM+ and DM-) 154
Riding comfort related problems 154
Cause Possible Solutions
The drive is running the motor (i.e., the Up/Down 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 (A1-01 = 2).
The operator is not in the Parameter Setup Mode.
• Verify the digital operator mode, Drive or Programming mode?
• Switch to the Programming Mode. Refer to The Drive and Programming Modes on page 98.
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 the password is unknown:
• Scroll to A1-04. Press and press at the same time. Parameter A1-05 will appear.
• Set a new password to parameter A1-05.
Undervoltage was detected.
• Check the drive main input voltage by looking at the DC bus voltage (U1-07).
• Check all main circuit wiring.
Cause Possible Solutions
The drive is not in the Drive Mode.
• Check if the DRV on the digital operator is displayed.
• Enter the Drive Mode. Refer to The Drive and Programming Modes on page 98.
The button is enabled (o2-01=1) and was pushed.
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.
Auto-Tuning has just completed.
• 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. Refer to The Drive and Programming Modes on page 98.
A Fast Stop was executed and is not reset. Reset the Fast Stop command.
Settings are incorrect for the source that provides the Up/Down
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
There 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 speed reference source setting is incorrect.
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
STOP
SIEP_C710616_38F_5_0.book 152 ページ ２０１５年１１月９日 月曜日 午後３時３６分
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