Setup Troubleshooting And Possible Solutions - YASKAWA L1000A Quick Start Manual

◆ 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 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
The Safety Controller Does Not Recognize Safe Disable Monitor Output Signals (Terminals DM+ and DM-)
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.
YASKAWA ELECTRIC TOEP C710616 38H YASKAWA AC Drive-L1000A Quick Start Guide
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
page 63.
• 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
STOP
appear.
• 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.
4 Start-Up Programming & Operation
Possible Solutions
The Drive and Programming Modes on
and press at the same time. Parameter A1-05 will
Page
129
130
130
131
131
131
131
131
4
129