YASKAWA U1000 Series Technical Manual page 361

Digital Operator Display
Cause
An option card of the same type is already installed in
option port CN5-A or CN5-B.
An input option card is already installed in option port
CN5-A or CN5-B.
Three PG option boards are installed.
Digital Operator Display
oFC03 to oFC11
to
oFC12 to oFC17
to
Cause
Option card or hardware is damaged.
Digital Operator Display
oFC50 to oFC55
to
Cause
Option card or hardware is damaged.
Digital Operator Display
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
Cause
Motor has overheated.
YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual
Option Card Fault at Option Port CN5-C
oFC02
Same type of option card already connected
Except for PG options, each option card type can only be installed once. Make sure only one type of option card is connected.
Make sure that a comm. option, a digital input option, or an analog input option is installed. The same type of card cannot be
installed twice.
Maximum two PG option boards can be used at the same time. Remove the PG option board installed into option port CN5-A.
Option Card Error Occurred at Option Port CN5-C
• Cycle power to the drive.
• If the problem continues, replace either the control board or the entire drive. For instructions on replacing the control board,
contact Yaskawa or your nearest sales representative.
Option Card Error Occurred at Option Port CN5-C
Refer to the option manual for details.
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 the
drive model selection (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 selection (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 selection (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 multi-function analog input H3-02, H3-10, or H3-06 be set 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). This will mainly involve reducing E1-08 and E1-10.
• Be careful not to lower E1-08 and E1-10 too much, as 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 Fault (PTC Input)
oH4
• The motor overheat signal to analog input terminal A1, A2, or A3 exceeded the fault detection level.
• Detection requires that multi-function analog input H3-02, H3-10, or H3-06 = "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). This will mainly involve reducing E1-08 and E1-10. Be careful not to lower
E1-08 and E1-10 too much because 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.
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Refer to Cooling Fan Component Names on page
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
6.4 Fault Detection
399.
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