YASKAWA ELECTRIC
SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
369
Code
Name
Causes
Possible Solutions
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 any wiring errors.
A fault occurred on the machine side.
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 Time]
.
•
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
E1-08
and
E1-10
are set too low, the overload
tolerance will decrease at low speeds.
Note:
•
The drive detects this error if the motor overheat signal that was entered to an analog input terminals A1, A2, or A3 is more than the
alarm detection level. (If
H3-02, H3-10, or H3-06 = E [MFAI Function Select = Motor Temperature (PTC Input)]
was set.)
•
If the drive detects this error, the terminal assigned to
H2-01 to H2-03 = 10 [MFDO Function Select = Alarm]
will be ON.
•
If the drive detects this fault, 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]
.