Yaskawa P7 Drive User Manual - Manual (Page 180)

Parameters A - 6
PI Control
b5-01
PI Mode Setting
PI Mode
This parameter enables / disables the closed loop (PI) controller.
0: Disabled
1: Enabled (commanded speed becomes PI setpoint)
3: Fref+PI
0, 1, 3 0 Quick Setting
b5-02 Proportional Gain Setting
P Gain
Sets the proportional gain of the PI controller.
0.00 to
25.00
2.00
Quick
Setting*
b5-03 Integral Time Setting
PI I Time Sets the integral time for the PI controller. A setting of zero dis-
ables integral control.
0.0 to 360.0 5.0sec
Quick
Setting*
b5-04 Integral Limit Setting
PI I Limit Sets the maximum output possible from the integrator. Set as a %
of fmax. 0.0 to
100.0
100% Programming
b5-06 PI Output Limit
PI Limit Sets the maximum output possible from the entire PI controller. Set
as a % of fmax. 0.00 to
100.0
100.0% Programming
b5-07 PI Offset Adjustment
PI Offset
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.
–100.0 to
+100.0
0.0% Programming
b5-08
PI Primary Delay Time
Constant
PI Delay Time
Sets the amount of time for a filter on the output of the PI
controller. 0.00 to
10.00
0.00sec Programming
b5-09
PI Output Level Selection
Output Level Sel
Determines whether the PI controller will be direct or reverse
acting.
0: Normal Output (direct acting)
1: Reverse Output (reverse acting)
0 or 1 0 Programming
b5-10
PI Output Gain Setting
Output Gain
Sets the output gain of the PI controller. 0.0 to 25.0 1.0 Programming
b5-11
PI Output Reverse Selection
Output Rev Sel
0: 0 limit (when PI output goes negative Drive stops)
1: Reverse (when PI goes negative Drive reverses)
0 limit automatic when reverse prohibit is selected using b1-04
0 or 1 0 Programming
b5-12
PI Feedback Reference
Missing Detection Selection
Fb los Det Sel 0: Disabled
1: Alarm
2: Fault
0 to 2 0 Programming
b5-13
PI Feedback Loss Detection
Level
Fb los Det Lvl
Sets the PI feedback loss detection level as a percentage of
maximum frequency (E1-04).
0 to 100 0% Programming
b5-14
PI Feedback Loss Detection
Time
Fb los Det Time
Sets the PI feedback loss detection delay time in terms of seconds. 0.0 to 25.5 1.0sec Programming
b5-15
Sleep Function Start
Level
Sleep Level
Sets the sleep function start frequency. 0.0 to 200.0 0.0Hz Programming
b5-16
Sleep Delay Time
Sleep Time
Sets the sleep function delay time in terms of seconds. 0.0 to 25.5 0.0sec Programming
b5-17
PI Accel/Decel Time
PI Acc/Dec Time
Applies an accel/decel time to the PI setpoint reference. 0.0 to 25.5 0.0sec Programming
b5-18
PI Setpoint Selection
PI Setpoint Sel 0: Disabled
1: Enabled
0 or 1 0 Programming
b5-19 PI Setpoint Value
PI Setpoint
Depends on b5-20.
(Continued on following page)
0.00 to
100.00
0.00% Programming
Denotes that parameter can be changed when the drive is running. * Menu location is Quick Setting when b5-01=1, and Programming when b5-01=0.
Table 1: Parameter List (Continued)
Parameter
No.
Parameter Name
Digital Operator Display
Description
Setting
Range
Factory
Setting
Menu
Location