YASKAWA iQpump Series Programming Manual page 163

Figure 1.126
Thrust Bearing Mode and Pre-Charge Function with Alternating Auto and Hand Mode.
Hand
Mode
Run
Command
Hand Frequency
Pre-Charge
Frequency P4-02
Thrust Bearing
Frequency P4-05
Output Frequency
Pre-Charge
Frequency P4-02
Thrust Bearing
Frequency P4-05
Pre-Charge
Level P4-01
P4-02 Pre-Charge Frequency
■
Setting Range: 0.0 to 120.0 Hz
Factory Default: 0.0 Hz
The iQpump drive can be configured for a pre-charge function. The frequency reference used by the pre-charge function is programmed
in the Pre-Charge Frequency (P4-02).
Refer to Pre-Charge Level (P4-01) for further description.
The Pre-Charge Frequency (P4-02) works in conjunction with the Pre-Change Level (P4-01).
YASKAWA TM.iQp.02 iQpump Drive Programming Manual
Standard
Accel Time
C1-01
Thrust
Pre-Charge
Bearing Accel
Complete
Time P4-04
PI Feedback
Figure 131
@ Hand
Frequency
Frequency Reference
Limited because
Hand Frequency < P4-05
TIME
Standard
Decel Time
C1-02
Thrust Bearing
Decel Time P4-06
Stop due to Run
Command Removed
163