Yaskawa Z1000 AC Drive HVAC - Manual (Page 265)

No.
(Addr.
Hex)
Name LCD Display Description Values Page
b2-12
(1BA)
Short Circuit Brake
Time at Start
SC Brake T@Start
OLV/PM OLV/PM
Sets the time for Short Circuit Braking operation at start.
Default: 0.00 s
Min.: 0.00
Max.: 25.50
–
b2-13
(1BB)
Short Circuit Brake
Time at Stop
SC Brake T@Stop
OLV/PM OLV/PM
Sets the Short Circuit Braking operation time at stop.
Default: 0.50 s
Min.: 0.00
Max.: 25.50
–
b2-18
(177)
Short Circuit Braking
Current
Shrt Cir Brk
OLV/PM OLV/PM
Determines the current level for Short Circuit Braking. Set as a
percentage of the motor rated current.
Default: 100.0%
Min.: 0.0
Max.: 200.0
–
<1> Default setting is determined by parameter A1-02, Control Method Selection.
u b3: Speed Search
No.
(Addr
Hex.)
Name LCD Display Description Values Page
b3-01
(191)
Speed Search Selection
at Start
SpdSrch at Start
0: Disabled
1: Enabled
0: Disabled
1: Enabled
Default: <1>
Range: 0, 1
153
b3-02
(192)
Speed Search
Deactivation Current
SpdSrch DeactCur
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.
Default: <1>
Min.: 0%
Max.: 200%
153
b3-03
(193)
Speed Search
Deceleration Time
SpdSrch Dec Time
Sets output frequency reduction time during Speed Search. Default: 2.0 s
Min.: 0.1
Max.: 10.0
153
b3-04
(194)
V/f Gain during Speed
Search
SpdSrch V/f
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.
Default: <2>
Min.: 10%
Max.: 100%
153
b3-05
(195)
Speed Search Delay
Time
Search Delay
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.
Default: 0.2 s
Min.: 0.0
Max.: 100.0
b3-06
(196)
Output Current 1 during
Speed Search
Srch Im Lvl1
Sets the current injected to the motor at the beginning of Speed
Estimation Speed Search. Set as a coefficient for the motor rated
current.
Default: <2>
Min.: 0.0
Max.: 2.0
153
b3-08
(198)
Current Control Gain
during Speed Search
(Speed Estimation
Type)
Srch ACR P Gain
Sets the proportional gain for the current controller during
Speed Search.
Default: <1> <2>
Min.: 0.00
Max.: 6.00
–
b3-10
(19A)
Speed Search Detection
Compensation Gain
Srch Detect Comp
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.
Default: 1.05
Min.: 1.00
Max.: 1.20
154
b3-14
(19E)
Bi-Directional Speed
Search Selection
Bidir Search Sel
0: Disabled
1: Enabled
0: Disabled (uses the direction of the frequency reference)
1: Enabled (drive detects which way the motor is rotating)
Default: <1>
Range: 0, 1
154
b3-17
(1F0)
Speed Search Restart
Current Level
SrchRestart Lvl
Sets the Speed Search restart current level as a percentage of the
drive rated current.
Default: 150%
Min.: 0
Max.: 200
154
b3-18
(1F1)
Speed Search Restart
Detection Time
SrchRestart Time
Sets the time to detect Speed Search restart. Default: 0.10 s
Min.: 0.00
Max.: 1.00
154
b3-19
(1F2)
Number of Speed
Search Restarts
Num of SrchRestr
Sets the number of times the drive can attempt to restart when
performing Speed Search.
Default: 3
Min.: 0
Max.: 10
154
b3-24
(1C0)
Speed Search Method
Selection
SpdSrch Method
0: CurrentDetection
1: Speed Estimation
0: Current Detection
1: Speed Estimation
Default: 0
Range: 0, 1
154
b3-25
(1C8)
Speed Search Wait Time SpdSrch WaitTime
Sets the time the drive must wait between each Speed Search
restart attempt.
Default: 0.5 s
Min.: 0.0
Max.: 300.0
155
B.2 b: Application
YASKAWA ELECTRIC TOEP YAIZ1U 03A YASKAWA AC Drive – Z1000 User Manual 265
B
Parameter List