Motor Is Too Hot; Drive Does Not Allow Selection Of Rotational Auto-Tuning - YASKAWA FSDrive-MV1000 Series Instructions For Use Manual

Motor Rotates in the Opposite Direction from the Run Command
n
Cause
Phase wiring between the drive and motor is incorrect.
The connection is incorrect between the drive control
circuit terminals (forward/reverse) and forward/reverse
signals of control panel.
The forward direction for the motor is setup incorrectly.
Note: Check the motor specifications for the forward and reverse directions. The motor specifications will vary depending on the
manufacturer of the motor.
Motor Rotates in One Direction Only
n
Cause
The drive prohibits reverse rotation.
u Motor is Too Hot
Cause
The load is too heavy.
The air around the motor is too hot.
The drive is operating in a vector control mode but
Auto-Tuning has not yet been performed.
Insufficient voltage insulation between motor phases.
The motor fan has stopped or is clogged.
u Drive Does Not Allow Selection of Rotational Auto-Tuning
Cause
The desired Auto-Tuning mode is not available for the
selected control mode.
YASKAWA ELECTRIC TOEP C710687 02B FSDrive-MV1000 Instructions
5.11 Troubleshooting without Fault Display
• Check the motor wiring.
• Switch two motor cables (U, V, and W) to reverse motor direction.
• Connect drive output terminals U, V, and W in the right order to match motor
terminals U, V, and W.
• Check to see the wiring of control circuit.
• Correct the wiring.
Connect the drive's output terminals (U, V, and W) and motor terminals (U, V, and W)
properly.
When the wiring is correct, exchange two of cables U, V, and W connected to the motor.
1
1 Typically, forward is designated as being
2
2 Motor Shaft
Set b1-04 to allow the motor to rotate in reverse.
If the load is too heavy for the motor, the motor will overheat as it exceeds its rated
torque value for an extended period of time.
Keep in mind that the motor also has a short-term overload rating in addition to the
possible solutions provided below:
• Reduce the load.
• Increase the acceleration and deceleration times.
• Check the values set for the motor protection (L1-01, L1-02) as well as the motor
rated current (E2-01).
• Increase motor capacity.
• Check the ambient temperature.
• Cool the area until it is within the specified temperature range.
• Perform Auto-Tuning.
• Calculate the motor value and reset the motor parameters.
• Change the motor control method to V/f Control (A1-02 = 0).
When a motor is connected to the drive output terminals (U, V, W), a surge voltage is
generated between the motor coils and drive switching. Generally, the maximum surge
voltage is about 1.5 times the Power Cell input power supply voltage (1500 V with a
1200 V input).
Use a motor with a voltage tolerance higher than the max voltage surge.
Check the motor fan.
Check to see that A1-02 (Control Method Selection) is set to 0 (V/f control).
Select the correct control mode at A1-02.
Possible Solutions
counterclockwise when looking from the motor shaft.
Possible Solutions
Possible Solutions
Possible Solutions
5
185