YASKAWA Z1000 Technical Manual page 137

Setting 0: "WC (Inch of Water)
Setting 1: PSI (Pounds per Square Inch)
Setting 2: GPM (Gallons per Minute)
Setting 3: F (Degrees Fahrenheit)
Setting 4: CFM (Cubic Feet per Minute)
Setting 5: CMH (Cubic Meters per Hour)
Setting 6: LPH (Liters per Hour)
Setting 7: LPS (Liters per Second)
Setting 8: Bar (Bar)
Setting 9: Pa (Pascal)
Setting 10: C (Degrees Celsius)
Setting 11: Mtr (Meters)
Setting 12: Ft (Feet)
Setting 13: LPM (Liters per Minute)
Setting 14: CMM (Cubic Meters per Minute)
n b5-47: Reverse Operation Selection 2 by PI Output
Determines whether a negative PI output reverses the direction of drive operation. When the PI function is used to trim the
frequency reference (b5-01 = 3), this parameter has no effect and the PI output will not be limited
(same as b5-11 = 1).
No.
b5-47
Setting 0: 0 Limit (Reverse Disabled)
Negative PI output will be limited to zero and the drive output will be stopped.
Setting 1: Reverse Enabled
Negative PI output will cause the drive to run in the opposite direction.
n Fine-Tuning PI
Follow the directions below to fine tune PI control parameters:
Goal
Suppress overshoot
Achieve stability quickly while
allowing some overshoot
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
Name
Reverse Operation Selection 2 by PI Output
Table 5.5 PI Fine Tuning
Tuning Procedure
Increase the integral time (b5-03)
Decrease the integral time (b5-03)
Setting Range
0, 1
Result
Response
After adjustment
Response
5.2 b: Application
Default
1
Before adjustment
After adjustment
Time
Before adjustment
Time
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