19 Troubleshooting
112 YASKAWA TOEPC71061737B GA800 Drive Installation & Primary Operation
Code Name Causes Possible Solutions
A magnetic contactor was switched at the output. Set the operation sequence to not turn ON or OFF the magnetic
contactor while the drive is outputting voltage.
The V/f pattern settings are incorrect. • Examine the ratios between the V/f pattern frequency and
voltage. Decrease the voltage if it is too high compared to the
frequency.
• Adjust E1-04 to E1-10 [V/f Pattern Parameters]. For motor 2,
adjust E3-04 to E3-10.
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 code setting is incorrect for PM Control
Methods.
• Enter the correct motor code to E5-01 [PM Motor Code
Selection] as specified by the PM motor.
• For specialized motors, refer to the motor test report and set E5-
xx [PM Motor Settings] correctly.
If the drive detects the fault at start or in the low
speed range (10% or less) and n8-57 = 1 [HFI
Overlap Selection = Enabled] for PM Control
methods, the high frequency injection gain is too
high.
• Set E5-xx [PM Motor Parameters] correctly or do Rotational
Auto-Tuning.
• Decrease the value of n8-41 [HFI P Gain] in 0.5 unit increments.
Note:
Set n8-41 > 0.0 for an ordinary IPM motor.
The current flowing in the motor is more than the
value set in L8-27 [Overcurrent Detection Gain] for
PM Control Methods.
Correct the value set in L8-27.
The control method is set incorrectly for the motor. Set A1-02 [Control Method Selection] correctly.
The motor main circuit cable is too long. Replace the drive with a larger capacity model.
Speed search does not complete at start when A1-02
= 8 [EZ Vector Control] and you use an induction
motor.
When E9-01 = 0 [Motor Type Selection = Induction (IM)], set b3-
24 = 2 [Speed Search Method Selection = Current Detection Speed
Search].
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].
oFA00 Option Not Compatible with Port
The option card connected to connector CN5-A is not
compatible.
Connect the option card to the correct connector.
Note:
Encoder option cards are not compatible with connector CN5-A.
oFA01 Option Fault/Connection Error
The option card connected to connector CN5-A 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.
oFA02 Duplicate Options
The same option cards or the same type of option
cards are connected to connectors CN5-A, B, and C.
Connect the option card to the correct connector.
Note:
Use connectors CN5-C and CN5-B to connect two encoder
option cards.
oFA03 to
oFA06
Option Card Error Occurred at
Option Port CN5-A
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.
oFA10, oFA11
Option Card Error Occurred at
Option Port CN5-A
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.
oFA12 to
oFA17
Option Card Connection Error (CN5-
A)
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.
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