YASKAWA FSDrive-MV1000 Instructions Manual page 124

5.4 Fault Detection
Digital Operator Display
IOV
Cause
Excessive rise of the power supply voltage
Digital Operator Display
LF
Cause
The output cable is disconnected.
The motor winding is damaged.
The output terminal is loose.
The rated current of the motor being used is
less than 5% of the drive rated current.
An output transistor is damaged.
Digital Operator Display
LIN
nn LINK FAULT
Cause
Optical fiber cable fault
Fault of the cell control board or control board
(CCB)
Digital Operator Display
oFA00
Cause
The option card installed into port CN5-A is
incompatible with the drive.
Digital Operator Display
oFA01
Cause
The option board connection to port CN5-A is
faulty.
Digital Operator Display
oFA02
Cause
The same or similar option cards are installed
in ports CN5-A, B, and C.
124
Input Overvoltage
The main circuit's power supply voltage has exceeded the setting in L2-41 in longer than
the time set to L2-42.
⇒Check if an appropriate power supply is used.
⇒Take measures to adjust the power supply voltage of the main circuit (for example,
changing the taps of the transformer).
⇒ Change the setting (L2-41) to appropriate value.
⇒If detection is faulty, replace the isolation board, which detects the power supply voltage
of the main circuit, or the control board.
Output Phase Loss
Phase loss on the output side of the drive.
Phase Loss Detection is enabled when L8-07 is set to 1 or 2.
Check for wiring errors and ensure the output cable is connected properly.
⇒Correct the wiring.
Check the resistance between motor lines.
⇒Replace the motor if the winding is damaged.
Apply the tightening torque specified in this manual to fasten the terminals.
⇒Retighten the terminals to the tightening torques specified in this manual (refer to page
64).
Check the motor capacities.
⇒Replace the board. For instructions on replacing it, contact Yaskawa or your nearest sales
representative.
CCB-MB Communication Error (Link Fault)
No response has not been returned within 1 ms or longer in the communication cycle.
⇒Replace the optical fiber cable.
⇒Replace the cell control board (CCB).
⇒Replace the control board.
Option Card Fault at Option Port CN5-A
⇒ Connect the option card properly.
Option Card Error Occurred at Option Port CN5-A
⇒Turn the control power off and reconnect the option card. Check if the option card is
properly plugged into the option port.
Option Card Error Occurred at Option Port CN5-A
⇒ Connect the option card properly.
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YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions