Troubleshooting Without Fault Display; Troubleshooting Without Fault Display; Cannot Change Parameter Settings; Motor Does Not Rotate Properly After Pressing Run Button Or After Entering External Run Command - Omron JZA User Manual

6.8 Troubleshooting without Fault Display

6.8

Troubleshooting without Fault Display

This section describes troubleshooting problems that do not trip an alarm or fault.
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Cannot Change Parameter Settings

Cause
The drive is running the motor (i.e., the Run command
is present).
The Access Level is set to restrict access to parameter
settings.
The operator is not in the Parameter Setup Mode (the
LED screen will display "PAr").
The wrong password was entered.
Undervoltage was detected.
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Motor Does Not Rotate Properly after Pressing RUN Button or after Entering External
Run Command
n Motor Does Not Rotate
Cause
The drive is not in the Drive
Mode.
The button was pushed.
A Fast-Stop was executed and
has not yet been reset.
Settings are incorrect for the
source that provides the run
command.
There is faulty wiring in the
control circuit terminals.
The drive has been set to accept
the frequency reference from the
incorrect source.
The terminal set to accept the
main speed reference is set to the
incorrect voltage and/or current.
Selection for the sink/source
mode is incorrect.
Frequency reference is too low. • Check the frequency reference monitor (U1-01).
Multi-function analog input is set
up to accept gain for the
frequency reference, but no
voltage (current) has been
provided.
STOP
The button was pressed
when the drive was started from
a REMOTE source.
Motor is not producing enough
torque.
134
• 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).
• See what mode the LED parameter is current set for.
• Parameters cannot be edited when in the Setup Mode ("STUP"). Switch modes so that "PAr"
appears on the screen.
• 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 you cannot remember the password:
•
Display parameter A1-04. Press the
Parameter A1-05 will appear.
• Set a new password to parameter A1-05.
• Check the drive input power voltage by looking at the DC bus voltage (U1-07).
• Check all main circuit wiring.
• Check if the DRV light on the LED operator is lit.
• Enter the Drive Mode to begin operating the motor.
Stop the drive and check if the correct frequency reference source is selected. If the operator keypad shall be the
source, the LO/RE button LED must be on, if the source is REMOTE, it must be off.
Take the following step to solve the problem:
•
Push the button.
Reset the Fast-Stop command.
Check parameter b1-02 (Run Command Selection).
Set b1-02 so that it corresponds with the correct run command source.
0: LED operator
1: Control circuit terminal (default setting)
2: MEMOBUS/Modbus communications
• Check the wiring for the control terminal.
• Correct wiring mistakes.
• Check the input terminal status monitor (U1-10).
Check parameter b1-01 (Frequency Reference Selection 1).
Set b1-01 to the correct source of the frequency reference.
0: LED operator
1: Control circuit terminal (default setting)
2: MEMOBUS/Modbus communications
3: Potentiometer (option)
Check DIP switch S1. Next assign the correct input level to terminal A1 (H3-01).
Refer to DIP Switch S1 Analog Input Signal Selection on page
Check DIP switch S3. Refer to Sinking/Sourcing Mode Switch on page
• Increase the frequency by changing the maximum output frequency (E1-09).
• Check the multi-function analog input settings.
• Check if H3-02 has been set to the proper values.
• Check if the analog input value has been set properly.
•
STOP
When the button is pressed, the drive will decelerate to stop.
• Switch off the run command and then re-enter a run command.
•
STOP
The button is disabled when o2-02 is set to 0.
• Ensure the selected V/f pattern corresponds with the characteristics of the motor being used.
• Increase both the minimum and mid output frequency voltages (E1-08, E1-10).
Increase the frequency reference so that it is higher than the minimum frequency reference (E1-09).
Increase the torque compensation gain (C4-01).
Possible Solutions
STOP
button while pressing
Possible Solutions
Refer to The Drive and Programming Modes on page
46.
44.
SIEP C710606 33A OYMC AC Drive – J1000 User Manual
at the same time.
57.