B2: Dc Injection Braking And Short Circuit Braking; B3: Speed Search - YASKAWA A1000 Technical Manual

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b2: DC Injection Braking and Short Circuit Braking

No.
(Addr. Name
Hex)
b2-01 DC Injection Braking Start
(189) Frequency
b2-02 DC Injection Braking
(18A) Current
b2-03 DC Injection Braking Time
(18B) at Start
b2-04 DC Injection Braking Time
(18C) at Stop
b2-08 Magnetic Flux
(190) Compensation Value
b2-12 Short Circuit Brake Time at
(1BA) Start
b2-13 Short Circuit Brake Time at
(1BB) Stop
b2-18 Short Circuit Braking
(177) Current
<1> Default setting is determined by parameter A1-02, Control Method Selection.
<2> A coasting motor may require a braking resistor circuit to bring the motor to a stop in the required time.
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b3: Speed Search

No.
(Addr Name
Hex.)
b3-01 Speed Search Selection at
(191) Start
b3-02 Speed Search Deactivation
(192) Current
b3-03 Speed Search Deceleration
(193) Time
b3-04 V/f Gain during Speed
(194) Search
b3-05
Speed Search Delay Time
(195)
b3-06 Output Current 1 during
(196) Speed Search
b3-10 Speed Search Detection
(19A) Compensation Gain
b3-14 Bi-Directional Speed Search
(19E) Selection
b3-17 Speed Search Restart
(1F0) Current Level
YASKAWA ELECTRIC TOEP C710616 41B YASKAWA AC Drive - A1000 Quick Start Guide
Description
Sets the frequency at which DC Injection Braking starts when "Ramp to stop"
(b1-03 = 0) is selected.
Sets the DC Injection Braking current as a percentage of the drive rated current. Default: 50%
Sets DC Injection Braking (Zero Speed Control when in CLV and CLV/PM)
time at start. Disabled when set to 0.00 seconds.
Sets DC Injection Braking (Zero Speed Control when in CLV and CLV/PM)
time at stop.
Sets the magnetic flux compensation as a percentage of the no-load current
value (E2-03).
Sets the time for Short Circuit Braking operation at start.
Sets the Short Circuit Braking operation time at stop.
Determines the current level for Short Circuit Braking. Set as a percentage of
the motor rated current.
Description
0: Disabled
1: Enabled
Sets the current level at which the speed is assumed to be detected and Speed
Search is ended. Set as a percentage of the drive rated current.
Sets output frequency reduction time during Speed Search.
Determines how much to lower the V/f ratio during Speed Search.
Output voltage during Speed Search equals the V/f setting multiplied by b3-04.
When using an external contactor on the output side, b3-05 delays executing
Speed Search after a momentary power loss to allow time for the contactor to
close.
Sets the current injected to the motor at the beginning of Speed Estimation
Speed Search. Set as a coefficient for the motor rated current.
Sets the gain which is applied to the speed detected by Speed Estimation Speed
Search before the motor is reaccelerated. Increase this setting if ov occurs
when performing Speed Search after a relatively long period of baseblock.
0: Disabled (uses the direction of the frequency reference)
1: Enabled (drive detects which way the motor is rotating)
Sets the Speed Search restart current level as a percentage of the drive rated
current.
B.2 b: Application
Values
Default:
Min.: 0.0 Hz
Max.: 10.0 Hz
Min.: 0
Max.: 100
Default: 0.00 s
Min.: 0.00
Max.: 10.00
Default:
Min.: 0.00 s
Max.: 10.00 s
Default: 0%
Min.: 0
Max.: 1000
<2> Default: 0.00 s
Min.: 0.00
Max.: 25.50
<2> Default: 0.50 s
Min.: 0.00
Max.: 25.50
Default: 100.0%
Min.: 0.0
Max.: 200.0
Values
Default:
Range: 0, 1
Default:
Min.: 0%
Max.: 200%
Default: 2.0 s
Min.: 0.1
Max.: 10.0
Default:
Min.: 10%
Max.: 100%
Default: 0.2 s
Min.: 0.0
Max.: 100.0
Default:
Min.: 0.0
Max.: 2.0
Default: 1.05
Min.: 1.00
Max.: 1.20
Default:
Range: 0, 1
Default: 150%
Min.: 0
Max.: 200
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