YASKAWA A1000 Technical Manual page 134

5.2 Fault Detection
to oFC03 to oFC11
to oFC12 to oFC17
Cause
Surrounding temperature is too high
Load is too heavy
Internal cooling fan is stopped
Digital Operator Display
Cause
Surrounding temperature is too high
Load is too heavy
Digital Operator Display
Cause
Motor has overheated
Digital Operator Display
<2>
Cause
Motor has overheated.
134
Option Card Fault at Option Port CN5-C
oFC01
Option not properly connected
Option Card Fault at Option Port CN5-C
oFC02
Same type of option card already connected
Option card error occurred at option port CN5-C
Heatsink Overheat
oH
The temperature of the heatsink exceeded the overheat pre-alarm level set to L8-02. Default value for
L8-02 is determined by drive capacity (o2-04).
• 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.
• Measure the output current.
• Decrease the load.
• Lower the carrier frequency (C6-02).
• Replace the cooling fan.
• After replacing the drive, reset the cooling fan maintenance parameter (o4-03 = 0).
Overheat 1 (Heatsink Overheat)
oH1
The temperature of the heatsink exceeded the drive overheat level. The overheat level is determined by
drive capacity (o2-04).
• 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.
• Measure the output current.
• Lower the carrier frequency (C6-02).
• Reduce the load.
Motor Overheat Alarm (PTC Input)
oH3
• The motor overheat signal to analog input terminal A1, A2, or A3 exceeded the alarm detection level.
• Detection requires setting multi-function analog inputs H3-02, H3-06, or H3-10 to E.
Motor Overheat Fault (PTC Input)
oH4
• The motor overheat signal to analog input terminal A1, A2, or A3 exceeded the fault detection level.
• Detection requires setting multi-function analog inputs H3-02, H3-06, or H3-10 to E.
• Check the size of the load, the accel/decel times, and the cycle times.
• Decrease the load.
• Increase the acceleration and deceleration times (C1-01 through C1-08).
• Adjust the preset V/f pattern (E1-04 through E1-10) by reducing E1-08 and E1-10.
• Do not set E1-08 and E1-10 too low. This reduces load tolerance at low speeds.
• Check the motor rated current.
• Enter the motor rated current as indicated on the motor nameplate (E2-01).
• Ensure the motor cooling system is operating normally.
• Repair or replace the motor cooling system.
Motor Overheat (NTC Input)
oH5
The motor temperature exceeded the level set to L1-16 (or L1-18 for motor 2)
• Reduce the load.
• Check the ambient temperature.
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
YASKAWA ELECTRIC TOEP C710616 41B YASKAWA AC Drive - A1000 Quick Start Guide