YASKAWA
SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
357
Code
Name
Causes
Possible Solutions
Overload occurred while running at low speed.
•
Decrease the load when running at low speed.
•
Raise the motor speed.
•
If the motor is run frequently at low speeds, either replace it
with one that is a size larger or use a drive dedicated motor.
Note:
If a general-purpose motor is used, overload may occur while
running at low speed even when operating at below the rated
current.
L1-01 [Motor Overload Protection Select]
is not set
correctly.
Set
L1-01
in accordance with the motor characteristics if a drive
dedicated motor is used.
The V/f pattern does not fit the motor qualities.
•
Examine the ratios between the V/f pattern frequency and
voltage. Decrease the voltage if it is too high compared to the
frequency.
•
Adjust
E1-04 to E1-10 [V/f Pattern Parameters]
. For motor 2,
adjust
E3-04 to E3-10 [V/f Pattern for Motor 2]
. 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.
Set
E1-06 [Base Frequency]
correctly.
Set
E1-06
correctly to the rated frequency that indicated on the
motor nameplate.
Multiple motors are running off the same drive.
Set
L1-01 = 0 [Motor Overload Protection Select = Disabled]
,
and then configure a circuit to protect the motors by connecting a
thermal overload relay to each motor.
The characteristics of the electronic thermal
protector and the characteristics of the motor
overload do not match.
•
Examine the motor characteristics and set
L1-01 [Motor
Overload (oL1) Protection]
correctly.
•
Connect a thermal overload relay to the motor.
The electronic thermal protector is operating at the
wrong level.
Set
E2-01 [Motor Rated Current (FLA)]
correctly to the value
specified by the motor nameplate.
Motor loss due to overexcitation operation is
increasing.
•
Lower the value set in
n3-13 [Overexcitation Deceleration
Gain]
.
•
Set
L3-04 ≠ 4 [Decel Stall Prevention Selection ≠
Overexcitation/High Flux]
.
•
Set
n3-23 = 0 [Overexcitation Operation Select = Enabled in
both directions]
.
The output current is fluctuating due to input power
supply phase loss.
Make sure that there is no phase loss, and repair problems.
Note:
•
The drive detects this fault if the electronic thermal protector of the drive triggered the motor overload protection.
•
Do a Fault Reset to clear the fault.
Code
Name
Causes
Possible Solutions
oL2
Drive Overload
The load is too heavy.
Decrease the load.
The acceleration/deceleration time or cycle time is
too short.
•
Examine the acceleration/deceleration times and the motor
start/stop frequency (cycle time).
•
Increase the values set in
C1-01 to C1-08 [Acceleration/
Deceleration Time]
.
The V/f pattern does not fit the motor qualities.
•
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. Decrease the
values set in
E1-08 [Mid Point A Voltage]
and
E1-10
[Minimum Output Voltage]
. For motor 2, adjust
E3-xx [V/f
Pattern for Motor 2]
settings. Decrease the values set in
E3-08
[Motor 2 Mid Point A Voltage]
and
E3-10 [Motor 2 Minimum
Output Voltage]
. For motor 3, adjust
E7-xx [V/f Pattern for
Motor 3]
settings. Decrease the values set in
E7-08 [Motor 3
Mid Point A Voltage]
and
E7-10 [Motor 3 Minimum Output
Voltage]
.
Note:
If
Ex-08
and
Ex-10
are set too low, the overload tolerance will
decrease at low speeds.
The drive capacity is too small.
Replace the drive with a larger capacity model.
Overload occurred while running at low speed.
•
Decrease the load when running at low speed.
•
Replace the drive with a larger capacity model.
•
Decrease the value set in
C6-02 [Carrier Frequency
Selection]
.
Torque compensation gain is too large.
Decrease the value set in
C4-01 [Torque Compensation Gain]
so
that the motor does not stall.
The output current is fluctuating due to input power
supply phase loss.
•
Examine for wiring errors or disconnected wires in main
circuit drive input power, and repair problems.
•
Make sure that there is no phase loss, and repair problems.
Note:
•
The drive detects this fault if the electronic thermal protector of the drive started the motor overload protection.
•
Do a Fault Reset to clear the fault.
Содержание CR700
Страница 1: ......
Страница 2: ...This Page Intentionally Blank 2 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
Страница 244: ...3 13 Test Run Checklist 244 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual ...
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 ...
Страница 837: ...EZZ023535 2 35 1 Revision History Revision Revised Content Date First Edition 2017 08 ...
Страница 872: ...EZZ023536 2 16 Revision History Revision Revised Content Date First Edition 2017 08 ...