YASKAWA GA800 Series, Техническое описание

Страница: 343 / 1016

T
roubleshooting
7
7.5 Minor Faults/Alarms
YASKAWA SIEPC71061737B GA800 Drive Technical Reference 343
Code Name Causes Possible Solutions
oH Heatsink Overheat
The ambient temperature is high and the heatsink
temperature is more than the
L8-02 [Overheat Alarm
Level] .
• Measure the ambient temperature.
• Increase the airflow around the drive.
• Install a cooling device (cooling fan or air conditioner) to lower
the ambient temperature.
• Remove objects near the drive that are producing too much heat.
There is not sufficient airflow around the drive.
•
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.
The internal cooling fan or fans have stopped. 1. Use the procedures in this manual to replace the cooling fan.
2. Set o4-03 = 0 [Fan Operation Time Setting = 0 h] to reset the
cooling fan operation time.
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 assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
•
Set the stopping method for this fault in L8-03 [Overheat Pre-Alarm Selection] .
Code Name Causes Possible Solutions
oH2 External Overheat (H1-XX=B) An external device sent an oH2 . 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] that was set to
MFDI terminals S1 to S8.
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name Causes Possible Solutions
oH3 Motor Overheat (PTC Input)
The thermistor wiring that detects motor temperature
is defective. Correct wiring errors.
A fault occurred on the machine.
Example: The machine is locked.
Examine the machine and remove the cause of the fault
The motor has overheated.
•
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 C1-08 [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] . For motor 2,
adjust E3-04 to E3-10 . 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.
Note:
• When H3-02, H3-10, or H3-06 = E [MFAI Function Select = Motor Temperature (PTC Input)] , the drive detects this fault if the motor overheat signal entered to analog input
terminals A1 to A3 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 Select = 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] .
Code Name Causes Possible Solutions
oL3 Overtorque 1
A fault occurred on the machine.
Example: The machine is locked.
Examine the machine and remove the cause of the fault.
The parameters are incorrect for the load. Adjust L6-02 [Torque Detection Level 1] and L6-03 [Torque
Detection Time 1] settings.
Note:
• The drive detects this fault if the drive output current is more than the level set in L6-02 for longer than L6-03 .
•
If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
• Set the conditions that trigger the minor fault using L6-01 [Torque Detection Selection 1] .