Yaskawa Z1000 AC Drive HVAC User Manual
Page 268
No.
(Addr.
Hex)
Name
LCD Display
Description
Values
Page
b5-26
(1E8)
PI Maximum Boost
Time
SetpointBoostTim
Sets the maximum boost time when PI feedback does not reach
boost level.
The Snooze Function starts when the PI feedback exceeds the
boost setting level or when the boost time expires.
Default: 0s
Min.: 0
Max.: 2600
b5-27
(1E9)
PI Snooze Feedback
Level
Snooze Reset Lvl
Sets the PI feedback level above which Snooze mode is
activated. Set as a percentage of the maximum frequency.
Default: 60%
Min.: 0
Max.: 100
b5-28
(1EA)
PI Feedback Function
Selection
PI Fdbk Sqrt Sel
0: Disabled
1: Enabled
0: Disabled
1: Square root
Default: 0
Range: 0, 1
b5-29
(1EB)
PI Square Root Gain
PI Fdbk SqrtGain
A multiplier applied to the square root of the feedback.
Default: 0.00
Min.: 0.00
Max.: 2.00
b5-30
(1EC)
PI Feedback Offset
PI Fdbk Offset
PI feedback offset set as a percentage of the maximum
frequency.
Default: 0.00
Min.: 0.00
Max.: 100.00
b5-34
(19F)
PI Output Lower Limit PID Out Low Lim
Sets the minimum output possible from the PI controller as a
percentage of the maximum output frequency.
Default: 0.0%
Min.: -100.0
Max.: 100.0
b5-35
(1A0)
PI Input Limit
PID Input Limit
Limits the PI control input (deviation signal) as a percentage of
the maximum output frequency. Acts as a bipolar limit.
Default:
1000.0%
Min.: 0.0
Max.: 1000.0
b5-36
(1A1)
PI Feedback High
Detection Level
Fb High Det Lvl
Sets the PI feedback high detection level as a percentage of the
maximum output frequency.
Default: 100%
Min.: 0
Max.: 100
b5-37
(1A2)
PI Feedback High
Detection Time
Fb High Dly Time
Sets the PI feedback high level detection delay time.
Default: 1.0 s
Min.: 0.0
Max.: 25.5
b5-38
(1FE)
PI Setpoint User Display PID UsrDspMaxVal
Sets the display value of U5-01 and U5-04 when the maximum
frequency is output.
Default:
<3>
Min.: 1
Max.: 60000
b5-39
(1FF)
PI Setpoint Display
Digits
PID UsrDspDigits
0: No Dec (XXXXX)
1: 1 Dec (XXXX.X)
2: 2 Dec (XXX.XX)
3: 3 Dec (XX.XXX)
0: No decimal places
1: One decimal place
2: Two decimal places
3: Three decimal places
Default:
<3>
Range: 0 to 3
b5-40
(17F)
Frequency Reference
Monitor Content during
PI
Fref Mon Sel@PID
0: Fref Mon w PID
1: Fref Mon w/o PID
0: Display the frequency reference (U1-01) after PI
compensation has been added.
1: Display the frequency reference (U1-01) before PI
compensation has been added.
Default: 0
Range: 0, 1
b5-41
(160)
PI Unit Selection
PI Mon Unit Sel
0: WC
1: PSI
2: GPM
3: °F
4: CFM
5: CMH
6: LPH
7: LPS
8: Bar
9: Pa
10: °C
11: Mtr
12: Ft
13: LPM
14: CMM
0: WC (Inch of water)
1: PSI (Pounds per square inch)
2: GPM (Gallons per minute)
3: F (Degrees Fahrenheit)
4: CFM (Cubic feet per minute)
5: CMH (Cubic meters per hour)
6: LPH (Liters per hour)
7: LPS (Liters per second)
8: Bar (Bar)
9: Pa (Pascal)
10: C (Degrees Celsius)
11: Mtr (Meters)
12: Ft (Feet)
13: LPM (Liters per minute)
14: CMM (Cubic meters per minute)
Default: 0
Range: 0 to 14
b5-42
(161)
PI Output Monitor
Calculation Method
PI Out Calc Mode
0: Linear
1: Square root
2: 1/f2
3: 1/f3
0: Linear - the monitor displays PI output
1: Square root - the monitor displays square root PI output
2: Quadratic - the monitor displays 1/(PI output)
3: Cubic - the monitor displays 1/(PI output)
Default: 0
Range: 0 to 3
B.2 b: Application
268
YASKAWA ELECTRIC TOEP YAIZ1U 03A YASKAWA AC Drive – Z1000 User Manual