370
YASKAWA
SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Code
Name
Causes
Possible Solutions
oL5
Overload Detection (oL5)
A fault occurred on the machine.
Example: Overload occurred.
Examine the machine and remove the cause of the fault.
The parameters are incorrect for the load.
Adjust the overload detection parameters.
Note:
•
The drive detects this error in these conditions.
–
The drive detects this fault if the motor current and torque are more than the value set in
S5-02 [OverL Detect Operation Select 1]
for longer than
S5-03 [Overload
Detection Time 1]
.
–
The drive detects this fault if the motor current and torque are more than the value set in
S5-05 [OverL Detect Operation Select 2]
for longer than
S5-06 [Overload
Detection Time 2]
.
•
If the drive detects this error, the terminal assigned to
H2-01 to H2-05 = 10 [MFDO Function Select = Alarm]
will be ON.
•
Set the conditions that trigger detection of a minor fault using
S5-01 [OverL Detect Operation Select 1]
and
S5-04 [OverL Detect Operation Select 2]
.
Code
Name
Causes
Possible Solutions
oL6
Light-load Accel 2 Fault (oL6)
The setting for hold level and fault detection level
of Light-load 2 functions are not appropriate.
Output frequency >
S4-08 [Light-load 2 Activation
Freq]
.
Adjust
S4-10 [L-L 2 Motoring Hold Level]
,
S4-12 [L-L 2 Regen
Hold Level]
, and
S4-15 [L-L 2 Fault Detection Level]
settings.
Note:
•
The drive detects this fault if the output current is more than the value set in
S4-15
for longer than
S4-16 [L-L 2 Fault Detection Time]
.
•
If the drive detects this error, the terminal assigned to
H2-01 to H2-05 = 10 [MFDO Function Select = Alarm]
will be ON.
•
Set the conditions that trigger detection of a minor fault using
S4-14 [L-L 2 Fault Operation Selection]
.
Code
Name
Causes
Possible Solutions
oS
Overspeed
Overshoot is occurring.
Decrease
C5-01 [ASR Proportional Gain 1]
and increase
C5-02
[ASR Integral Time 1]
.
Note:
•
The drive detects this error if the motor speed is more than the value set in
F1-08 [Overspeed Detection Level]
for longer than
F1-09 [Overspeed Detection Delay Time]
.
•
If the drive detects this error, the terminal assigned to
H2-01 to H2-05 = 10 [MFDO Function Select = Alarm]
will be ON.
•
Set the stopping method for this fault in
F1-03 [Operation Select at Overspeed]
.
Code
Name
Causes
Possible Solutions
ov
DC Bus Overvoltage
There are surge voltages in the input power supply.
Connect a DC reactor to the drive.
Note:
If you turn the phase advancing capacitors ON and OFF and
use thyristor converters in the same power supply system,
there can be surge voltages that irregularly increase the input
voltage.
The drive output cable or motor is shorted to
ground. (The current short to ground is charging the
main circuit capacitor of the drive through the
power supply.)
1. Examine the motor main circuit cable, terminals, and motor
terminal box, and then remove ground faults.
2. Re-energize the drive.
The power supply voltage is too high.
Decrease the power supply voltage so that it matches the drive
rated voltage.
A drive malfunction occurred due to electrical
interference.
•
Check the control circuit lines, main circuit lines, and ground
wiring, and minimize the effects of electrical interference.
•
Check whether a magnetic contactor is the electrical
interference source, and use Surge Protective Device if
necessary.
Note:
•
The drive detects this error if the DC bus voltage is more than the
ov
detection level when the Run command has not been input (while the drive is stopped).
•
The
ov
detection level is approximately 410 V with 200 V class drives. The detection level is approximately 820 V with 400 V class drives.
•
If the drive detects this error, the terminal assigned to
H2-01 to H2-05 = 10 [MFDO Function Select = Alarm]
will be ON.
Code
Name
Causes
Possible Solutions
PASS
Modbus Communication Test
The MEMOBUS/Modbus communications test is
complete.
The
PASS
display will turn off after communications test mode is
cleared.
Code
Name
Causes
Possible Solutions
PF
Input Phase Loss
There is a phase loss in the drive input power.
Examine for wiring errors or disconnected wires in main circuit
drive input power, and repair problems.
Loose wiring in the input power terminals.
Correctly tighten the terminals according to the specified
tightening torque.
The drive input power voltage is changing too
much.
Examine the voltage from the drive input power and review the
possible solutions for stabilizing the drive input power.
Unsatisfactory balance between voltage phases.
•
Examine the voltage from the drive input power and review
the possible solutions for stabilizing the drive input power.
•
Disable input phase loss detection.
Содержание CR700
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Страница 422: ...7 7 Storage Guidelines 422 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
Страница 426: ...8 2 Disposal Instructions 426 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
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