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5.2 Fault Detection
YASKAWA ELECTRIC
TOEP C710656 07A YASKAWA Power Regenerative Converter - D1000 Instruction Manual
111
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5
Digital Operator
Display
Fault Name
Details
oC
Overcurrent
converter sensors detected an output current greater than the specified overcurrent level.
Cause
Possible Solution
One of the cables has shorted out or there is a
grounding problem
• Check the motor cables.
• Remove the short circuit and reapply power to the converter.
• Check the resistance between the motor cables and the ground terminal
.
• Replace damaged cables.
The load is too heavy
• Measure the current flowing into the converter.
• Replace the converter with a larger capacity converter if the current value exceeds the rated
current.
• Determine if there is sudden fluctuation in the current level.
• Reduce the load to avoid sudden changes in the current level or switch to a larger converter.
converter fails to operate properly due to noise
interference
• Review the possible solutions provided for handling noise interference.
• Review the section on handling noise interference on page 393 and check the control circuit
lines, main circuit lines, and ground wiring.
The wiring of the power supply voltage
detection circuits (
) and
the wiring of the main circuit terminals
(R/L1, S/L2, and T/L3) is not correct.
• Correct the wiring.
The voltage on the power supply side is very
low.
Check the wiring.
• Correct the wiring.
Check the load on the power supply of peripheral devices that are connected to the same power
supply line.
• Reduce the load.
Digital Operator
Display
Fault Name
Details
oFA00
Option Card
Connection Error at
Option Port CN5-A
Option compatibility error
Cause
Possible Solution
The option card installed into port CN5-A is
incompatible with the converter.
Check if the converter supports the option card to be installed. Contact Yaskawa for assistance.
Digital Operator
Display
Fault Name
Details
oFA01
Option Card Fault at
Option Port CN5-A
Option not properly connected
Cause
Possible Solution
The option card connection to port CN5-A is
faulty
• Turn off the power and reconnect the option card.
Digital Operator
Display
Fault Name
Details
oFA02
Same Type of Option
Card Already
Connected
The combination of the option cards that are connected is not correct.
Cause
Possible Solution
The same option cards or the same type of
option cards are connected to CN5-A, CN5-B,
and CN5-C.
• Connect the option cards correctly.
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