YASKAWA HV600 Installation & Startup page 139

Code Name
OD Output Disconnect
Note:
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
• If the drive detects this error, it will respond as specified by the setting of Y4-42 [Output Disconnect Detection Sel].
Code Name
oH Heatsink Overheat
Note:
• The drive detects this error if the heatsink temperature of the drive is more than L8-02.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
• Use L8-03 [Overheat Pre-Alarm Selection] to the stopping method for this fault.
Code Name
oH2 External Overheat (H1-XX=B)
Note:
If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name
oH3 Motor Overheat (PTC Input)
Note:
• When H3-02 or H3-10 = E [MFAI Function Selection = Motor Temperature (PTC Input)], the drive detects this fault if the motor overheat signal entered to analog input terminals
A1 and A2 is more than the alarm detection level.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
• If the drive detects this error, it will operate the motor as specified by the stopping method set in L1-03 [Motor Thermistor oH Alarm Select].
YASKAWA TOEPYAIH6B01A HV600 AC Drive Narrow Bypass Installation & Startup
Causes
The output circuit between the drive and the motor is
open, and the drive output current is less than 5% of
E2-01 [Motor Rated Current (FLA)].
Causes
The ambient temperature is high and the heatsink
temperature is more than the L8-02 [Overheat Alarm
Level].
There is not sufficient airflow around the drive.
The internal cooling fan or fans stopped.
Causes
An external device sent an oH2 alarm.
Causes
The thermistor wiring that detects motor temperature
is defective.
A fault occurred on the machine.
Example: The machine is locked.
The motor has overheated.
5.6 Minor Faults/Alarms
Possible Solutions
• Close the disconnected output circuit between the drive and the
motor.
• If you do not use a motor disconnect, set Y4-42 = 0 [Disabled].
Possible Solutions
• Measure the ambient temperature.
• Increase the airflow around the drive.
• Install a cooling device (cooling fan or air conditioner) to
decrease the ambient temperature.
• Remove objects near the drive that are producing too much heat.
• Give the drive the correct installation space as shown in the
manual.
• Make sure that there is sufficient circulation around the control
panel.
• Examine the drive for dust or other unwanted materials that
could clog the cooling fan.
• Remove unwanted materials that prevent air circulation.
1. Replace the cooling fan.
2. Set o4-03 = 0 [Fan Operation Time Setting = 0 h] to reset the
cooling fan operation time.
Possible Solutions
1. Find the external device that output the overheat alarm.
2. Remove the cause of the problem.
3. Clear the Overheat Alarm (oH2) [H1-xx = B] in MFDI
terminals S1 to S7.
Possible Solutions
Correct wiring errors.
Examine the machine and remove the cause of the fault
• Check the load level, acceleration/deceleration time, and motor
start/stop frequency (cycle time).
• Decrease the load.
• Increase the values set in C1-01 to C1-04 [Acceleration/
Deceleration Times].
• Set E2-01 [Motor Rated Current (FLA)] correctly to the value
specified by the motor nameplate.
• Make sure that the motor cooling system is operating correctly,
and repair or replace it if it is damaged.
• Adjust E1-04 to E1-10 [V/f Pattern Parameters]. Decrease the
values set in E1-08 [Mid Point A Voltage] and E1-10 [Minimum
Output Voltage].
Note:
If the values set in E1-08 and E1-10 are too low, the overload
tolerance will decrease at low speeds.
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