Yaskawa iQpump Controller User Manual - Manual (Page 84)

4.2 iQpump Drive Quick Start-Up Procedures
84 YASKAWA TM.iQp.06 iQpump Controller User Manual
Figure 4.9
START LEVEL
Start Pump System Start
Delay
200 PSI
Start Level P1-04 (Absolute)
(Example 100 PSI)
System Set-Point
(Example 150 PSI)
Feedback Signal from
pressure transducer
(4 – 20 mA)
0
Time
Pr
e
s
s
u
re
Start Level Delay (P1-05)
(Example 5.0 sec.)
Feedback Scaling (P1-03)
(Example 200 PSI)
SLEEP MODE (Example)
Minimum Speed P1-06
(Example 40.0 Hz)
Output
Frequency
(pump motor
speed)
0
Sleep Delay Time (P2-03)
(Example 5.0 sec.)
Ramp or Coast to Stop, b1-02
O
u
tp
ut
F
requenc
y
60 Hz
Pump Running Go to Sleep
Time
WAIT FOR PRESSURE TO FALL BELOW
START LEVEL (P1-04)
WAIT
SYSTEM STARTS WHEN
PRESSURE SIGNAL
FALLS BELOW 100 PSI
SYSTEM GOES TO SLEEP
WHEN PUMP MOTOR SPEED
DROPS BELOW 2400 RPM
2
3
Start Pump System Start
Delay
200 PSI
System Set-Point
(Example 150 PSI)
Feedback Signal from
pressure transducer
(4 – 20 mA)
0
Time
Pr
e
s
s
u
re
Start Level Delay (P1-05)
(Example 5.0 sec.)
Feedback Scaling (P1-03)
(Example 200 PSI)
WAIT
SYSTEM STARTS WHEN
PRESSURE SIGNAL
FALLS BELOW 100 PSI
Start Level P1-04 (Delta)
(Example -50 PSI,
Start Level = 150 – 50 = 100 PSI)
Example: Absolute Level (Positive Start Level)
Example: Delta Level (Negative Start Level)
Note: When System Set-point is changed, the start level is automatically adjusted .
-50 PSI
100 PSI
100 PSI
150
150