YASKAWA V1000 Series

5.5 Fault Detection
210 YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
Cause Possible Solution
The acceleration or deceleration
times are too short.
• Calculate the torque needed during acceleration relative to the load inertia and
the specified acceleration time.
• If the right amount of torque cannot be set, make the following changes:
• Increase the acceleration time (C1-01, -03, -05, -07)
• Increase the S-curve characteristics (C2-01 through C2-04)
• Increase the capacity of the drive.
The drive is attempting to operate a
specialized motor or a motor larger
than the maximum size allowed.
• Check the motor capacity.
• Ensure that the rated capacity of the drive is greater than or equal to the
capacity rating found on the motor nameplate.
Magnetic contactor (MC) on the
output side of the drive has turned
on or off.
Set up the operation sequence so that the MC is not tripped while the drive is
outputting current.
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 the fault occurs at the same time that the overexcitation function is
operating.
• 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- = “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”.
LED Operator Display Fault Name
oFA00
Option Card Fault (Port A)
The option card is incompatible with the drive.
Cause Possible Solution
The option card is incompatible with
the drive.
Use a compatible option card.