Yaskawa CIMR-LU Drives - Manual (Page 127)

4 Start-Up Programming & Operation
YASKAWA ELECTRIC TOEP C710616 38F YASKAWA AC Drive L1000A Quick Start Guide 127
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◆ Setup Troubleshooting and Possible Solutions
This section describes troubleshooting problems that do not trip an alarm or fault.
■ Cannot Change Parameter Settings
Symptom Page
Cannot Change Parameter Settings 127
Motor Does Not Rotate Properly after Pressing RUN Button or
after Entering External Up/Down Command
Motor Does Not Rotate 128
Motor Rotates in the Opposite Direction from the Up/Down
Command
128
Motor Gets Too Hot 129
Drive Does Not Allow Selection of Rotational Auto-Tuning 129
Encoder Offset (E5-11) Set During Auto-Tuning (Rotational or Stationary) Consistently Differs by 30 Degrees or More. 129
Noise From Drive or Output Lines When the Drive is Powered On 129
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 61 .
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.
STOP
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