YASKAWA iQpump Series Programming Manual page 164

P4-03 Pre-Charge Time
■
Setting Range: 0.0 to 3600.0 min
Factory Default: 0.0 min
The iQpump drive can be configured for a pre-charge function. The maximum allowable time for the pre-charge function is programmed
in the Pre-Charge Time (P4-03). Setting P4-03 to a value of 0 will disable the pre-charge function.
Refer to Pre-Charge Level (P4-01) for further description.
The Pre-Charge Time (P4-03) works in conjunction with the Pre-Change Level (P4-01).
P4-04 Thrust Bearing Acceleration Time
■
Setting Range: 0.0 to 6000.0 sec
Factory Default: 1.0 sec
The iQpump drive can be configured for a thrust bearing function. The acceleration time, when the thrust bearing function is enabled (P4-
05 > 0), is programmed in the Thrust Bearing Acceleration Time (P4-04).
Refer to Thrust Bearing Frequency (P4-05) for further description.
The Thrust Bearing Acceleration Time (P4-04) works in conjunction with the Thrust Bearing Frequency (P4-05).
Figure 1.127
Thrust Freq.
P4-05
0 Hz
Auto Mode Run
164
<0032>
PI Disabled
Acceleration
Time P4-04
Auto Mode Run Command
Stop
PI Enabled, Continue Normal Auto Operation
TIME
Figure 132
YASKAWA TM.iQp.02 iQpump Drive Programming Manual