YASKAWA V1000 - Page 138

Surrounding temperature is too
high.
• Check the temperature surrounding the drive. Verify temperature is within
drive specifications.
• Improve the air circulation within the enclosure panel.
• Install a fan or air conditioner to cool the surrounding area.
• Remove anything near the drive that might be producing excessive heat.
Load is too heavy.
• Measure the output current.
• Decrease the load.
• Lower the carrier frequency (C6-02).
Internal cooling fan is stopped.
• Replace the cooling fan. .
• After replacing the drive, reset the cooling fan maintenance parameter (o4-03
= “0”).
oH1
Overheat 1 (Heatsink Overheat)
The temperature of the heatsink has exceeded 10 °C plus the default value of
L8-02.
Cause Possible Solution
Surrounding temperature is too
high.
• Check the temperature surrounding the drive.
• Improve the air circulation within the enclosure panel.
• Install a fan or air conditioner to cool the surrounding area.
• Remove anything near the drive that might be producing excessive heat.
Load is too heavy.
• Measure the output current.
• Lower the carrier frequency (C6-02).
• Reduce the load.
The internal cooling fan has
reached its performance life or has
malfunctioned.
• Check the maintenance time for the cooling fan (U4-04).
• If U4-04 exceeds 90%, replace the cooling fan. .
• After replacing fan, reset the fan maintenance time (o4-03 = “0”).
Current flowing to control circuit
terminal +V exceeded the tolerance
level.
• Check the current level of the terminal.
• Set the current to the control circuit terminal to be 20 mA or less.
oH3
Motor Overheat Alarm (PTC Input)
• The motor overheat signal to analog input terminal A1 or A2 exceeded the
alarm detection level.
• Detection requires multi-function analog input H3-02 or H3-10 be set to “E”.
oH4
Motor Overheat Fault (PTC Input)
• The motor overheat signal to analog input terminal A1 or A2 exceeded the
fault detection level.
• Detection requires that multi-function analog input H3-02 or H3-10 = “E”.
Cause Possible Solution
5.2 Fault Detection
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YASKAWA ELECTRIC TOEP C710606 47A YASKAWA AC Drive – V1000 Quick Start Guide