YASKAWA P7 User Manual page 179

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Parameter
Parameter Name
No.
Digital Operator Display
Speed Search Selection
b3-01
SpdSrch at Start
Speed Search Deactivation
b3-02
Current
SpdSrch Current
Speed Search Deceleration
b3-03
Time
SpdSrch Dec Time
Speed Search Delay Time
b3-05
Search Delay
Bidirectional Speed Search
b3-14
Selection
Bidir Search Sel
Timer Function ON-Delay
b4-01
Time
Delay-ON Timer
Timer Function OFF-Delay
b4-02
Time
Delay-OFF Timer
PI Mode Setting
b5-01
PI Mode
b5-02
Proportional Gain Setting
!
P Gain
b5-03
Integral Time Setting
!
PI I Time
b5-04
Integral Limit Setting
!
PI I Limit
b5-06
PI Output Limit
!
PI Limit
b5-07
PI Offset Adjustment
!
PI Offset
PI Primary Delay Time
b5-08
Constant
!
PI Delay Time
PI Output Level Selection
b5-09
Output Level Sel
!Denotes that parameter can be changed when the drive is running.
Table 1: Parameter List (Continued)
Description
Speed Search
Enables/disables and selects the speed search function at start.
0: SpdsrchF Disable - Speed search at start is disabled
(estimated speed method is used at other times)
1: SpdsrchF Enable - Speed search is enabled
(estimated speed method)
2: SpdsrchI Disable - Speed search at start is disabled
(current detection method is used at other times)
3: SpdscrhI Enable - Speed search is enabled
(current detection method)
Estimated Speed Method:
Actual motor speed and direction is estimated, then the motor is
ramped from that speed to the commanded speed.
Current Detection Method:
Current level is monitored while output frequency is ramped down.
Used only when b3-01 = 3. Sets the speed search operation current
as a percentage of drive rated current.
Used only when b3-01 = 3. Sets the deceleration time during speed
search.
Delays the speed search operation after a momentary power loss to
allow time for an external output contactor to re-energize.
0: Disabled
1: Enabled
Delay Timers
Used in conjunction with a multi-function digital input and a multi-
function digital output. This sets the amount of time between when
the digital input is closed, and the digital output is energized.
Used in conjunction with a multi-function digital input and a multi-
function digital output. This sets the amount of time the output
stays energized after the digital input is opened.
PI Control
This parameter enables / disables the closed loop (PI) controller.
0: Disabled
1: Enabled (commanded speed becomes PI setpoint)
3: Fref+PI
Sets the proportional gain of the PI controller.
Sets the integral time for the PI controller. A setting of zero
ables integral control.
Sets the maximum output possible from the integrator. Set as a %
of fmax.
Sets the maximum output possible from the entire PI controller.
Set as a % of fmax.
Sets the amount of offset of the output of the PI controller. Set as a
% of fmax.
The PI Offset Adjustment parameter has two different uses. Param-
eter b5-07 serves different functions depending on whether it is
used on a standard PI loop or a Differential PI loop.
1: Parameter b5-07 causes an offset to be applied to the output of
the PI function in a non-Differential PI loop. Every time the PI
output is updated, the offset is summed with the PI output. This
can be used to artificially kick-start a slow starting PI loop.
2: If the Drive is configured for Differential PI Regulation
(H3-09=16), then the PI Offset is the targeted maintained differ-
ential between the signal measured on analog input A1 and the
signal measured on analog input A2.
Sets the amount of time for a filter on the output of the PI
controller.
Determines whether the PI controller will be direct or reverse
acting.
0: Normal Output (direct acting)
1: Reverse Output (reverse acting)
Parameters A - 5
Setting
Factory
Range
Setting
0 to 3
2
0 to 200
120%
0.1 to 10.0
2.0sec
0.0 to
0.2sec
20.0sec
0 or 1
1
0.0 to
0.0sec
3000.0
0.0 to
0.0sec
3000.0
0, 1, 3
0
0.00 to
2.00
25.00
dis-
0.0 to 360.0
5.0sec
0.0 to
100%
100.0
0.00 to
100.0%
100.0
–100.0 to
0.0%
+100.0
0.00 to
0.00sec
10.00
0 or 1
0
Menu
Location
Programming
Programming
Programming
Programming
Programming
Programming
Programming
Quick Setting
Quick Setting
Quick Setting
Quick Setting
Quick Setting
Quick Setting
Quick Setting
Quick Setting

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