YASKAWA
SIEPC71061737B GA800 Drive Technical Reference
673
This function stops then restarts a coasting motor and increases motor flux to make high starting torque (a process
called initial excitation). Set this parameter to 0.00 to disable the function.
Note:
•
To restart a coasting motor, use DC Injection Braking to stop and then restart the motor, or enable Speed Search. Enable DC Injection
Braking or Speed Search to prevent
ov [Overvoltage]
and
oC [Overcurrent]
faults.
•
Sets the time of Initial Excitation at start when
A1-02 = 4 [AOLV]
and
n4-72 = 1 [Speed Feedback Mode = With Encoder]
.
■
b2-04: DC Inject Braking Time at Stop
No.
(Hex.)
Name
Description
Default
(Range)
b2-04
(018C)
DC Inject Braking Time at
Stop
Sets the DC Injection Braking Time at stop. Sets the time of Zero Speed Control at stop when
A1-02
= 3, 7 [Control Method Selection = CLV, CLV/PM]
.
Determined by A1-02
(0.00 - 10.00 s)
This function fully stops a motor with a large inertia during deceleration and will not let the inertia continue to rotate
the motor.
Set this parameter to 0.00 to disable the function.
When a longer time is required to stop the motor, increase the value.
Note:
Sets the time of Zero Speed Control at stop when
A1-02 = 4 [AOLV]
and
n4-72 = 1 [Speed Feedback Mode = With Encoder]
.
■
b2-08: Magnetic Flux Compensation Value
No.
(Hex.)
Name
Description
Default
(Range)
b2-08
(0190)
Magnetic Flux
Compensation Value
Sets how much current the drive injects when DC Injection Braking at Start starts (Initial Excitation)
as a percentage of
E2-03 [Motor No-Load Current]
.
0%
(0 - 1000%)
This parameter is effective when you start a high-capacity motor (a motor with a large secondary circuit time
constant). This function can quickly increase motor flux to make high starting torque (a process called initial
excitation).
The current level for DC Injection Braking at start changes linearly from the setting of
b2-08
to the setting of
b2-03
as
shown in
Figure 12.27 DC Current Level during DC Injection Braking at Start
Note:
•
If
b2-08 < 100%
, flux will develop very slowly.
•
When
b2-08 = 0%
, the DC current level will be the DC Injection current set in
b2-02 [DC Injection Braking Current]
.
•
If
b2-08
is set too high, DC Injection Braking at start can cause a large noise. Adjust
b2-08
to decrease the volume to the permitted level.
■
b2-12: Short Circuit Brake Time @ Start
No.
(Hex.)
Name
Description
Default
(Range)
b2-12
(01BA)
Short Circuit Brake Time @
Start
Sets the Short Circuit Braking time at start.
0.00 s
(0.00 - 25.50 s)
V/f
CL-V/f
OLV
CLV
AOLV
OLV/PM
OLV/PM AOLV/PM CLV/PM
EZOLV
V/f
CL-V/f
OLV
CLV
AOLV
OLV/PM
OLV/PM AOLV/PM CLV/PM
EZOLV
V/f
CL-V/f
OLV
CLV
AOLV
OLV/PM
OLV/PM AOLV/PM CLV/PM
EZOLV
Содержание GA800 Series
Страница 2: ...This Page Intentionally Blank 2 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 20: ...i 3 Warranty Information 20 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 30: ...1 3 Features and Advantages of Control Methods 30 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 58: ...2 9 Installation Methods 58 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 144: ...4 4 Start up Procedures 144 YASKAWA SIEPC71061737B GA800 Drive Technical Reference Figure 4 8 Basic Steps before Startup...
Страница 268: ...5 6 Safe Disable Input 268 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 306: ...6 3 MEMOBUS Modbus Communications 306 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 370: ...7 10 Troubleshooting Without Fault Display 370 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...
Страница 426: ...8 7 Storage Guidelines 426 YASKAWA SIEPC71061737B GA800 Drive Technical Reference...