Yaskawa iQpump Controller Programming Manual - Manual (Page 35)

YASKAWA TM.iQp.07 iQpump Controller Programming Manual 35
Figure 1.28
Figure 28. Dual Zone PI Operation
Table 8 Related Parameters <0034>
Table 9 Parameters <0034>
Table 10 Fault <0034>
◆ b5-02 Proportional Gain Setting
Setting Range: 0.00 ~ 25.00
Factory Default: 2.00
The proportional gain will apply a straight multiplier to the calculated difference (error) between the PI Setpoint and the measured
transmitter feedback at terminal A2. A large value will tend to reduce the error but may cause instability (oscillations) if too high. A small
value may allow to much offset between the setpoint and feedback (See
Figure 29. on following page).
Parameter
No.
Addr. Hex
Parameter Name
Digital Operator Display
Description
Setting
Range
Factory
Setting
Menu
Location
d1-02

281
Setpoint 2
Setpoint 2
Digital preset setpoint 2. Used when b1-01 = 0. Setting units are
affected by P1-02 and P1-03. Also is the Zone 1 PI reference when
b5-01 = 2. 0.00 ~
P1-02
value
0.00 Programming
d1-03

282
Setpoint 3
Setpoint 3
Digital preset setpoint 3. Used when b1-01 = 0. Setting units are
affected by P1-02 and P1-03. Also is the Zone 2 PI reference when
b5-01 = 2. 0.00 ~
P1-02
value
0.00 Programming
d1-04

283
Setpoint 4
Setpoint 4
Digital preset setpoint 4. Used when b1-01 = 0. Setting units are
affected by P1-02 and P1-03. Also is the Zones 1 and 2 PI reference
when b5-01 = 2. 0.00 ~
P1-02
value
0.00 Programming
 Denotes that parameter can be changed when the drive is running.
Parameter
No.
Addr. Hex
Parameter Name
Digital Operator Display
Description
Setting
Range
Factory
Setting
Menu
Location
P4-17
<0034>
830
Dual Zone PID Feedback
Bandwidth Range
Dual Zone Range
Determines the detection bandwidth for the dual zone PI control.
0 ~ 6000.0
(system
units
P1-02)
10.0
(system
units
P1-02)
Programming
Fault Display Description Cause Countermeasures
oPE13
Terminal A1
Programming error
Terminal A1 is being assigned to more than one of the following
functions:
- Frequency Reference (b1-01 = 1)
- Dual Zone PI is enabled (b5-01 = 2)
- Flow Meter Enabled (P6-01 > 0)
- Level Control Enabled (P8-01 = 1)
Reprogram b1-01, b5-01, P6-01,
or P8-01.
Run Cmd.
PI Setpoint
PI
Feedback
Zone 1
(Term A1)
PI Feedback
Zone 2
(Term A1)
PI Feedback
5 sec 5 sec
Short
Disturbance
Zone 1 Valve
Is closed
5 sec
Zone 2 Valve
Is opened
5 sec
Zone 2 Valve
Is closed
5 sec
Zone 1 Valve
Is opened
d1-04 d1-04 d1-04
d1-02
d1-03