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.
Symptom
Page
Cannot Change Parameter Settings
1 2 6
Motor D oes N ot Rotate Properly after Pressing R U N Button or after Entering
External U p/Dow n Command
Motor D oes N ot Rotate
1 2 6
Motor Rotates in the Opposite Direction from the U p/D ow n Command
1 2 7
Motor Gets Too Hot
1 2 7
Drive D oes N ot A llow Selection o f Rotational Auto-Tuning
1 2 7
N oise From Drive or Output Lines W hen the Drive is Powered On
1 2 7
Residual Current D evice (RCD, RCM)
1 2 7
Riding comfort related problems
12 8
♦ Cannot Change Parameter Settings
Cause
Possible Solutions
The drive is running the motor (i.e., the U p/Dow n command is
present).
• Stop the drive and switch over to the Programming Mode.
• M ost parameters cannot be edited during run.
The A ccess Level is set to restrict access to parameter settings.
• Set the A ccess L evel 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 D rive a n d Program m ing M odes on p a g e 8 2 .
The wrong password was entered.
• If the password entered to A 1-04 does not match the password saved to A 1-05, then drive settings cannot be changed.
• R eset the password.
I f the password is unknown:
• Scroll to A1-04. Press 1 @ STOP and press
^
at the same time. Parameter A 1-05 w ill appear.
• Set a new password to parameter A 1-05.
Undervoltage was detected.
• Check the drive main input voltage by looking at the DC bus voltage (U1-07).
• Check all main circuit wiring.
♦ Motor Does Not Rotate Properly after Pressing RUN Button or after Entering
External Up/Down Command
■ Motor Does Not Rotate
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. R efer to The D riv e a n d Program m ing M odes on p a g e 8 2 .
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 follow ing 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.
• W hen Auto-Tuning completes, the drive is switched back to the Programming Mode. The U p/Dow n command w ill
not be accepted unless the drive is in the Drive Mode.
• U se the digital operator to enter the Drive Mode. R efer to The D rive a n d P rogram m ing M odes on p a g e 8 2 .
A n Emergency Stop was executed and is not reset.
R eset the Emergency Stop command.
Settings are incorrect for the source that provides the U p/Dow n
command.
Check parameter b1-02 (U p/Dow n Command Selection).
Set b1-02 so that it corresponds with the correct U p/Dow n command source.
0: D igital operator
1: Control circuit terminal (default setting)
2: MEM OBUS/M odbus 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 o f the speed reference.
0: D igital operator
1: Control circuit terminal (default setting)
2: MEM OBUS/M odbus communications
3: Option card
The settings for the analog speed reference are incorrect.
Check the settings (signal level, function, bias, gain) for the analog input that supplies the speed reference.
Selection for the sink/source m ode and the internal/external power
supply is incorrect.
Check the position o f the jumper and setting for S3. R efer to C on trol I/O C on figuration on p a g e 68
Speed reference is too low.
• Check the speed reference monitor (U1-01).
• Increase the speed reference above the minimum output speed (E1-09).
• Make sure speed references are set properly and the speed selection works properly. If using an analog signal make
sure the input signal is present at the tim e the U p/Dow n command is issued.
The brake does not release or motor contactor is not closed.
Check the brake and motor contactor sequence.
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YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual