Parameters a - 6, Speed search, Delay timers – Yaskawa F7 Drive User Manual User Manual
Page 171: Table a.1 f7 parameter list (continued)
Parameters A - 6
Speed Search
b3-01
Speed Search Selection
SpdSrch at Start
Enables/disables and selects the speed search function at start.
0:
Speed Estimation Speed Search Disable - Speed search at start
is disabled (however the estimated speed method is used for
multi-function input, power loss ridethrough, auto fault retry)
1:
Speed Estimation Speed Search Enable - The speed estimation
method of speed search is enabled at run command.
2:
Current Detection Speed Search Disable - Speed search at start
is disabled (however the current detection method is used for
multi-function input, power loss ride through, auto fault retry)
3:
Current Detection Speed Search Enable - The current detection
method of speed search is enabled at run command.
Speed Estimation Method:
Motor speed and direction are
measured using residual motor flux.
Current Detection Method:
Motor speed is measured using
current feedback levels
(unidirectional only).
0 to 3
2
A
A
A
-
b3-02
Speed Search Deactivation
Current
SpdSrch Current
Used only when b3-01 = 2 or 3. Sets the speed search operation
current as a percentage of Drive rated current.
0 to 200
120%
A
-
A
-
b3-03
Speed Search Deceleration
Time
SpdSrch Dec Time
Used only when b3-01 = 2 or 3. Sets the deceleration time during
speed search.
0.1 to
10.0
2.0sec
A
-
A
-
b3-05
Speed Search Delay Time
Search Delay
Delays the speed search operation after a momentary power loss to
allow time for an external output contactor to re-energize.
0.0 to
20.0
0.2sec
A
A
A
A
b3-10
Speed Search Detection Com-
pensation Gain
Srch Detect Comp
Sets the gain for the frequency at which the Drive starts speed
estimation speed search. Use only when b3-01 = 0 or 1.
1.00 to
1.20
1.10
A
-
A
-
b3-14
Bi-directional Speed Search
Selection
Bidir Search Sel
This parameter enables the Drive to detect the direction of rotation
of the motor during speed search.
0: Disable - Drive uses frequency reference direction.
1: Enable - Drive uses detected direction
0 to 1
1
A
A
A
-
b3-17
<3021>
Speed Search Restart
Current Level
SrchRestart Lvl
Sets the current level to retry a speed search as a percentage, taking
the Drive rated current as 100%.
0 to 200
150%
*
A
No
A
No
b3-18
<3021>
Speed Search Detection Time
SrchRestart Time
Sets the time for speed search detection in seconds.
0.00 to
1.00
0.10 sec
A
No
A
No
b3-19
<3021>
Number of Speed Search
Restarts
Num of SrchRestr
Sets the number of times that a speed search can be restarted.
0 to 10
0
A
No
A
No
Delay Timers
b4-01
Timer Function ON-Delay
Time
Delay-ON Timer
Used in conjunction with a multi-function digital input and a multi-
function digital output programmed for the timer function. This sets
the amount of time between when the digital input is closed, and the
digital output is energized.
0.0 to
3000.0
0.0sec
A
A
A
A
b4-02
Timer Function
OFF-Delay Time
Delay-OFF Timer
Used in conjunction with a multi-function digital input and a multi-
function digital output programmed for the timer function. This sets
the amount of time the output stays energized after the digital input
is opened.
0.0 to
3000.0
0.0sec
A
A
A
A
Denotes that parameter can be changed when the Drive is running.
* For Heavy Duty (HD) Rating (C6-01=0): Factory Setting = 150% For Normal Duty (ND) Rating (C6-01=2): Factory Setting = 120%.
Table A.1 F7 Parameter List (Continued)
Parameter
No.
Parameter Name
Digital Operator Display
Description
Setting
Range
Factory
Setting
Control Method
V/F
V/F
w/PG
Open
Loop
Vector
Flux
Vector