YASKAWA CIMR-JA Series Installation & Start-Up Manual page 144

5.8 Troubleshooting without Fault Display
Cause
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.
STOP
The button was pressed when
the drive was started from a REMOTE
source. .
Motor is not producing enough torque.
The drive is set for both 2-Wire and 3-Wire
sequence at the same time.
n Motor Rotates in the Opposite Direction from the Run Command
Cause
Phase wiring between the drive and motor
is incorrect.
144 YASKAWA ELECTRIC TOEP C710606 25B YASKAWA AC Drive J1000 Installation & Start-Up Manual
• 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
63.
Check DIP switch S3. Refer to Sinking/Sourcing Mode Switch on page
60.
• Check the frequency reference monitor (U1-01).
• Increase the frequency by changing the maximum output frequency
(E1-09).
•
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).
• The drive is set for a 3-Wire sequence when one of parameters H1-03
through H1-05 is set to 0.
• If the drive is supposed to be set up for a 2-Wire sequence, then ensure
parameters H1-03 through H1-05 are not set to 0.
• If the drive is supposed to be set up for a 3-Wire sequence, then H1-
oo must be set to 0.
• Check the motor wiring.
• Switch two motor cables (U, V, and W) to reverse motor direction.
• Connect drive output terminals U/T1, V/T2 and W/T3 in the right order
to the corresponding motor terminals U, V, and W.
Possible Solutions
Possible Solutions