Yaskawa F7 Drive Programming Manual - Manual (Page 164)

Programming 156
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 ridethru, 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
Compensation 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 -
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
PID Control
b5-01
PID Function Setting
PID Mode
This parameter determines the function of the PID control.
0: Disabled
1: D = Feedback
2: D = Feed-Forward
3: Freq. Ref. + PID output (D = Feedback)
4: Freq. Ref. + PID output (D = Feed-Forward)
0 to 4 0 A A A A
b5-02 Proportional Gain Setting
PID Gain
Sets the proportional gain of the PID controller.
0.00 to
25.00
1.00 A A A A
b5-03 Intregral Time Setting
PID I Time Sets the integral time for the PID controller. A setting of zero
disables integral control. 0.0 to
360.0
1.0sec A A A A
b5-04 Intregral Limit Setting
PID I Limit Sets the maximum output possible from the integrator. Set as a
percentage (%) of maximum frequency. 0.0 to
100.0
100.0% A A A A
b5-05 Derivative Time
PID D Time Sets D control derivative time. A setting of 0.00 disables
derivative control. 0.00 to
10.00
0.00sec A A A A
b5-06 PID Output Limit
PID Limit Sets the maximum output possible from the entire PID controller.
Set as a percentage (%) of maximum frequency. 0.00 to
100.0
100.0% A A A A
Denotes that parameter can be changed when the Drive is running.
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