6.8 Troubleshooting without Fault Display
This section describes troubleshooting problems that do not trip an alarm or fault.
u
Cannot Change Parameter Settings
Cause
Possible Solutions
The drive is running the motor (i.e., the Run 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 (the
LED screen will display “PAr”).
• 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.
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 you cannot remember the password:
•
Display parameter A1-04. Press the
STOP
button while pressing
at the same time.
Parameter A1-05 will appear.
• Set a new password to parameter A1-05.
Undervoltage was detected.
• Check the drive input power voltage by looking at the DC bus voltage (U1-07).
• Check all main circuit wiring.
u
Motor Does Not Rotate Properly after Pressing RUN Button or after Entering External
Run Command
n
Motor Does Not Rotate
Cause
Possible Solutions
The drive is not in the Drive
Mode.
• Check if the DRV light on the LED operator is lit.
• Enter the Drive Mode to begin operating the motor.
Refer to The Drive and Programming Modes on page 57
.
The
button was pushed.
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.
A Fast-Stop was executed and
has not yet been reset.
Reset the Fast-Stop command.
Settings are incorrect for the
source that provides the run
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
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 drive has been set to accept
the frequency reference from the
incorrect source.
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)
The terminal set to accept the
main speed reference is set to the
incorrect voltage and/or current.
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 46
.
Selection for the sink/source
mode is incorrect.
Check DIP switch S3.
Refer to Sinking/Sourcing Mode Switch on page 44
.
Frequency reference is too low. • Check the frequency reference monitor (U1-01).
• Increase the frequency by changing the maximum output frequency (E1-09).
Multi-function analog input is set
up to accept gain for the
frequency reference, but no
voltage (current) has been
provided.
• 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.
The
STOP
button was pressed
when the drive was started from
a REMOTE source.
•
When the
STOP
button is pressed, the drive will decelerate to stop.
• Switch off the run command and then re-enter a run command.
•
The
STOP
button is disabled when o2-02 is set to 0.
Motor is not producing enough
torque.
• 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).
6.8 Troubleshooting without Fault Display
134
SIEP C710606 33A OYMC AC Drive – J1000 User Manual
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