Troubleshooting
6
6.5 Faults
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference 485
Code Name Causes Possible Solutions
The torque compensation gain is too large. Decrease the value set in C4-01 [Torque Compensation Gain] to
make sure that the motor does not stall.
Electrical interference caused a problem. Examine the control circuit lines, main circuit lines, and ground
wiring, and decrease the effects of electrical interference.
The gain during overexcitation operation is too large. • Find the time when the fault occurs.
• If the fault occurs at the same time as overexcitation operation,
decrease the value set in n3-13 [OverexcitationBraking (OEB)
Gain] and consider the motor flux saturation.
The drive received a Run command while the motor
was coasting.
• Examine the sequence and input the Run command after the
motor fully stops.
• Set b3-01 = 1 [Speed Search at Start Selection = Enabled] or set
H1-xx = 61, 62 [Speed Search from Fmax or Fref] to input speed
search commands from the MFDI terminals.
The motor main circuit cable is too long. Replace the drive with a larger capacity model.
The relay or contactor on the soft-charge bypass relay
is damaged.
• Re-energize the drive.
• If the fault stays, replace the control board or the drive.
An overcurrent condition occurred during
overexcitation deceleration.
• Decrease the value set in n3-13 [OverexcitationBraking (OEB)
Gain].
• Decrease the value set in n3-21 [HSB Current Suppression
Level].
Note:
• This fault occurs if the drive sensors detect a drive output current more than the specified overcurrent detection level.
• Do a Fault Reset to clear the fault.
Code Name Causes Possible Solutions
OD Output Disconnect
The output circuit between the drive and the motor is
open, and the drive output current is less than 5% of
E2-01 [Motor Rated Current (FLA)].
Close the disconnected output circuit between the drive and the
motor.
Note:
• Do a Fault Reset to clear the fault.
• If the drive detects this fault, it will respond as specified by the setting of Y4-42 [Output Disconnect Detection Sel].
Code Name Causes Possible Solutions
oFA00 Option Not Compatible with Port
The option card connected to connector CN5 is not
compatible.
Connect the option card to the correct connector.
Note:
Encoder option cards are not compatible with connector CN5.
Note:
• Do a Fault Reset to clear the fault.
• Fault trace is not available for this fault.
Code Name Causes Possible Solutions
oFA01 Option Fault/Connection Error
The option card connected to connector CN5 is not
compatible.
1. De-energize the drive.
2. Refer to the option card manual and correctly connect the
option card to the connector on the drive.
Note:
Do a Fault Reset to clear the fault.
Code Name Causes Possible Solutions
oFA05 Option A/D Error
A fault occurred in the option card. 1. De-energize the drive.
2. Make sure that the option card is correctly connected to the
connector.
3. If the problem continues, replace the option card.
Note:
Do a Fault Reset to clear the fault.
Code Name Causes Possible Solutions
oFA06 Option Communication Error
A fault occurred in the option card. 1. De-energize the drive.
2. Make sure that the option card is correctly connected to the
connector.
3. If the problem continues, replace the option card.
Note:
Do a Fault Reset to clear the fault.
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