62
YASKAWA
TOEPC71061723A YASKAWA AC Drive CR700 Quick Start Guide
Code
Name
Causes
Possible Solutions
oC
Overcurrent
The load is too heavy.
•
Measure the current flowing into the motor.
•
Replace the drive with a larger capacity model if the current
value exceeds the drive rated current.
•
Reduce the load or switch to a larger drive to avoid sudden
changes in the current level.
The motor is damaged from overheat or the motor
insulation is deteriorated.
Measure the motor insulation resistance, and replace the motor if
there is electrical conduction or unserviceable insulation.
The motor main circuit cable is contacting ground
to make a short circuit.
•
Examine the motor main circuit cable for damage, and repair
short circuits.
•
Measure the resistance between the motor main circuit cable
and the ground terminal. If there is electrical conduction,
replace the cable.
The output transistor of the drive has been damaged
due to a short circuit or ground fault on the drive
output side.
•
Make sure terminal B1 and terminals U/T1, V/T2, and W/T3
are not shorted. Also make sure terminal - and terminals U/T1,
V/T2, and W/T3 are not shorted.
•
If a short circuit has occurred, contact Yaskawa or your nearest
sales representative.
The acceleration/deceleration time is too short.
•
Calculate the torque necessary during acceleration related to
the load inertia and the specified acceleration time.
•
Increase the value set in
C1-01, C1-03, C1-05, or C1-07
[Acceleration Time]
until the necessary torque is achieved.
•
Increase the value set in
C2-01 to C2-04 [S-Curve
Characteristics]
until the necessary torque is achieved.
•
Replace the drive with a larger capacity model.
The drive is trying to operate a specialized motor or
a motor that is larger than the maximum applicable
motor output of the drive.
•
Examine the motor nameplate and reevaluate the motor and
drive to make sure that the drive rated current is larger than the
motor rated current.
•
Replace the drive with a larger capacity model.
A magnetic contactor was switched at the output.
Set up the operation sequence so the magnetic contactor is not
turned ON/OFF while the drive is outputting voltage.
The V/f pattern settings are incorrect.
•
Examine the ratios between the V/f pattern frequency and
voltage. Decrease the voltage if it is too high compared to the
frequency.
•
Adjust
E1-xx [V/f Pattern Parameters]
settings. For motor 2,
adjust
E3-xx [V/f Pattern for Motor 2]
settings. For motor 3,
adjust
E7-xx [V/f Pattern for Motor]
settings.
Torque compensation gain is too large.
Decrease the value set in
C4-01 [Torque Compensation Gain]
so
that the motor does not stall.
A malfunction occurred due to noise.
Check the control circuit lines, main circuit lines, and ground
wiring, and minimize the effects of electrical interference.
The gain during overexcitation operation is set too
large.
•
Identify the timing under which the fault occurs.
•
If the fault occurs simultaneously with overexcitation
operation, reduce the value set in
n3-13 [Overexcitation
Deceleration Gain]
, considering the motor flux saturation.
The drive received a Run command while the motor
was coasting.
Reevaluate the sequence to ensure that the stop command is input
after the motor has come to a complete stop.
The control method is not set correctly for the
motor being used.
Set
A1-02 [Control Method Selection]
correctly.
The motor main circuit cable is too long.
Replace the drive with a larger capacity model.
oFA00
Option Not Compatible with Port
The option connected to connector CN5-A is not
compatible.
Connect the option to the correct connector.
Note:
Encoder options are not compatible with connector CN5-A.
oFA01
Option Fault/Connection Error
The option card connected to connector CN5-A is
not compatible.
1.
De-energize the drive.
2.
Refer to the option card manual and correctly connect the
option card to the connector on the drive.
oFA02
Duplicate Options
The same option cards or the same type of option
cards are connected to connectors CN5-A, B, and C.
Connect the option card to the correct connector.
Note:
Use connectors CN5-C and CN5-B to connect two encoder
option cards.
oFA03 to
oFA06
Option Card Error Occurred at
Option Port CN5-A
A fault occurred in the option card.
1.
De-energize the drive.
2.
Make sure that the option card is correctly connected to the
connector.
3.
If the problem continues, replace the option card.
oFA10, oFA11
Option Card Error Occurred at
Option Port CN5-A
A fault occurred in the option card.
1.
De-energize the drive.
2.
Make sure that the option card is correctly connected to the
connector.
3.
If the problem continues, replace the option card.
oFA12 to
oFA17
Option Card Connection Error
(CN5-A)
A fault occurred in the option card.
1.
De-energize the drive.
2.
Make sure that the option card is correctly connected to the
connector.
3.
If the problem continues, replace the option card.