V/f setting is not operating as
expected.
• Check the ratios between the voltage and frequency.
• Set parameter E1-04 through E1-10 appropriately. Set E3-04 through E3-10
when using a second motor.
• Lower the voltage if it is too high relative to the frequency.
Excessive torque compensation.
• Check the amount of torque compensation.
• Reduce the torque compensation gain (C4-01) until there is no speed loss and
less current.
Drive fails to operate properly due
to noise interference.
• Review the possible solutions provided for handling noise interference.
• Review the section on handling noise interference and check the control circuit
lines, main circuit lines and ground wiring.
Overexcitation gain is set too high.
• Check if fault occurs simultaneously to overexcitation function operation.
• Consider motor flux saturation and reduce the value of n3-13 (Overexcitation
Deceleration Gain).
Run command applied while motor
was coasting.
• Enable Speed Search at start (b3-01 = “1”).
• Program the Speed Search command input through one of the multi-function
contact input terminals (H1-
oo
= “61” or “62”).
The wrong motor code has been
entered for PM Open Loop Vector
(Yaskawa motors only).
Enter the correct motor code to E5-01 to indicate that a PM motor is connected.
The motor control method and
motor do not match.
Check which motor control method the drive is set to (A1-02).
• For IM motors, set A1-02 = “0” or “2”.
• For PM motors, set A1-02 = “5”.
The motor cable is too long
Use a larger drive.
oFA00
Option Card Fault (Port A)
The option card is incompatible with the drive.
oFA01
Option Card Fault (Port A)
Replace the option card.
oFA03
Option Card Fault (port A)
Option card self-diagnostic error
oFA04
Option Card Fault (port A)
An error occurred attempting to write to the option card memory.
to
oFA30 to
oFA43
Option Card Fault (port A)
Communication ID error
oH
Heatsink Overheat
The temperature of the heatsink exceeded the value set to L8-02. Default value
for L8-02 is determined by drive capacity (o2-04).
Cause
Possible Solution
5.2 Fault Detection
YASKAWA ELECTRIC TOEP C710606 47A YASKAWA AC Drive – V1000 Quick Start Guide
137
5
Troubleshooting
