Yaskawa iQpump Micro - Manual (Page 158)

PID
feedback
Output
frequency
“Pre-charge
Active”
Message &
Digital Output
(H2-0
☐ = A4)
Run
command
b5-01 PID Select = 1 (Enabled) AND b5-09 Output Level Sel = 1 (Rev Character)
P4-01 Pre-charge Level
P4-02 Pre-charge Frequency
P4-03 Pre-charge Time
Pre-Charge
Complete via PID Feedback (Reverse Acting PID)
Figure 4.61 Pre-Charge Inverse Acting PID
Low Water
digital input
(N.O.)
Output
frequency
“Pre-charge
Active”
Message &
Digital Output
(H2-0
☐ = A4)
Run
command
P1-30 Low Water Digital Input = 0 (Normally Open)
Closed
P4-02 Pre-charge Frequency
P4-03 Pre-charge Time
Pre-Charge
Complete via “Low Water” Digital Input (N.O.)
Open
Figure 4.62 Pre-Charge via Low Water DI
PID
feedback
Output
frequency
“Pre-charge
Active”
Message &
Digital Output
(H2-0
☐ = A4)
Sleeping
b5-01 PID Select = 1 (Enabled) AND b5-09 Output Level Sel = 1 (Rev Character)
P4-01 Pre-charge Level
P1-04 Start/Draw-Down Level
P4-03 Pre-charge Time
Pre-Charge & Sleep
Wake Below Pre-charge Level then Wake Above Pre-charge Level
Sleeping
P1-05
Start
Delay
b5-01 PID Select = 1 (Enabled) AND b5-09 Output Level Sel = 0 (Direct Acting)
NOTE A: Feedback is below the P4-01 level, Pre-charge is performed.
NOTE B: Feedback is above the P4-01 level, Pre-charge is NOT performed.
NOTE A
NOTE B
Figure 4.63 Pre-Charge and Sleep
4.8 Detailed iQpump Parameter Descriptions
158 YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual