6.10 Troubleshooting Without Fault Display
390 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Causes Possible Solutions
The settings for voltage input and current input of the
master frequency reference are incorrect.
Examine these analog input terminal signal level settings:
• Terminal A1: DIP switch S1-1 and H3-01 [Terminal A1 Signal Level
Select]
• Terminal A2: DIP switch S1-2 and H3-09 [Terminal A2 Signal Level
Select]
• Terminal A3: DIP switch S4, S1-3 and H3-05 [Terminal A3 Signal Level
Select]
The selection for the sinking/sourcing mode and the
internal/external power supply is incorrect.
• For sinking mode, close the circuit between terminals SC-SP with a wire
jumper.
• For sourcing mode, close the circuit between terminals SC-SN with a
wire jumper.
• For external power supply, remove the wire jumper.
The frequency reference is too low. • View U1-01 [Freq Reference].
• Increase the frequency reference to a value higher than E1-09 [Minimum
Output Frequency].
The MFAI setting is incorrect. • Make sure that the functions set to the MFAI are correct. The frequency
reference is 0 when H3-02, H3-10, H3-06 = 1 [MFAI Function Select =
Frequency Gain] and voltage (current) is not input.
• View U1-13 to U1-15 [Terminal A1, A2, A3 Input Voltage] to see if the
analog input values set to terminals A1, A2, and A3 are applicable.
was pushed.
Turn the Run command OFF then ON from an external input.
Note:
When you push during operation, the drive will ramp to stop. Set
o2-02 = 0 [STOP Key Function Selection = Disabled] to disable the
function.
The 2-wire sequence and 3-wire sequence are set
incorrectly.
• Set one of the parameters H1-03 to H1-08 [Terminals S3 to S8 Function
Select] to 0 [3-Wire Sequence] to enable the 3-wire sequence.
• If a 2-wire sequence is necessary, make sure that H1-03 to H1-08 ≠ 0.
◆ The Motor Rotates in the Opposite Direction from the Run Command
Causes Possible Solutions
The phase wiring between the drive and motor is incorrect. • Examine the wiring between the drive and motor.
• Connect drive output terminals U/T1, V/T2, and W/T3 in the correct
sequence to agree with motor terminals U, V, and W.
• Switch two motor cables U, V, and W to reverse motor direction.
The forward direction for the motor is set incorrectly. • Connect drive output terminals U/T1, V/T2, and W/T3 in the correct
sequence to agree with motor terminals U, V, and W.
• Switch two motor cables U, V, and W to reverse motor direction.
A - For
ward
Rota
tion
Direc
tion
B - Load
Shaft
Figure 6.1 Forward Rotating Motor
Note:
• For Yaskawa motors, the forward direction is counterclockwise when
looking from the motor shaft side.
• Refer to the motor specifications, and make sure that the forward
rotation direction is correct for the application. The forward rotation
direction of motors can be different for different motor manufacturers
and types.
To Next Page
Loading...
