YASKAWA Z1000 - 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)
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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. Name Setting Range Default
b5-47 Reverse Operation Selection 2 by PI Output 0, 1 1
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.
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Fine-Tuning PI
Follow the directions below to fine tune PI control parameters:
Table 5.5 PI Fine Tuning
Goal Tuning Procedure Result
Suppress overshoot Increase the integral time (b5-03)
Response
Before adjustment
After adjustment
Time
Achieve stability quickly while
allowing some overshoot
Decrease the integral time (b5-03)
Response
Before adjustment
After adjustment
Time
5.2 b: Application
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
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5
Programming