Setup Troubleshooting And Possible Solutions; Setup Troubleshooting And Possible Solutions; Cannot Change Parameter Settings; Command - YASKAWA L1000V Technical Manual

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 Gets Too Hot
Drive Does Not Allow Selection of Rotational Auto-Tuning
Noise From Drive or Output Lines When the Drive is Powered On
Residual Current Device (RCD, RCM)
Riding comfort related problems
u 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.
u Motor Does Not Rotate Properly after Pressing RUN Button or after Entering
External Up/Down Command
n
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.
An Emergency 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.
Selection for the sink/source mode and the internal/external power
supply is incorrect.
Speed reference is too low.
The brake does not release or motor contactor is not closed.
STOP
The button is enabled (o2-02=1) and was pressed
when the drive was started from a REMOTE source.
YASKAWA EUROPE SIEP

4.7 Setup Troubleshooting and Possible Solutions

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 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.
• Ensure that the drive is not being energized by the UPS, i.e. Rescue Operation.
• 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 Emergency 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)
• Check the wiring for the control terminal.
• Correct wiring mistakes.
• Check the input terminal status monitor (U1-10).
Check the position of jumper CN1.
• Check the speed reference monitor (U1-01).
• Increase the speed reference above the minimum output speed (E1-09).
Check the brake and motor contactor sequence.
STOP
• When the button is pressed, the drive will decelerate to stop.
• Switch off the Up/Down command and then re-enter a new Up/Down command.
• o2-02 is set to 0 by default, i.e. the Stop button is disabled.
YASKAWA AC Drive L1000V Technical Manual
Possible Solutions
The Drive and Programming Modes on page
and press at the same time. Parameter A1-05 will appear.
Possible Solutions
Refer to The Drive and Programming Modes on page
Refer to Control I/O Configuration on page 59
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