Yaskawa iQpump Controller Programming Manual - Manual (Page 191)

YASKAWA TM.iQp.07 iQpump Controller Programming Manual 191
Figure 1.142
Figure 146.
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Function Description:
<0034>
Disable Low Pressure and Transducer Loss during Pre-charge. During the Pre-charge function, the low pressure and / or transducer loss
conditions will be ignored.
Two Stage Pre-charge. In order to get the Two Stage Pre-charge to operate, the normal Pre-charge function needs to be enabled, AND
parameter P4-12 needs to be set to a value greater than zero, AND parameter P4-13 must be set to a value greater than zero. When the
drive starts and is in Pre-charge Mode and the normal Pre-charge Timer expires (P4-02), the drive will switch to the P4-12 value for the
P4-13 time set. The functionality of the “Low Water” and “Disable Pre-charge” digital inputs are un-effected by the Two Stage
Pre-charge.
Run
Command
Hand Frequency
Pre-Charge
Frequency P4-02
Thrust Bearing
Frequency P4-05
Pre-Charge
Level P4-01
TIME
Thrust Bearing Mode and Pre-Charge Function with Alternating Auto and Hand Mode.
PI Feedback
Hand
Mode
Pre-Charge
Frequency P4-02
Thrust Bearing
Frequency P4-05
Standard
Accel Time
C1-01
Thrust
Bearing Accel
Time P4-04 Pre-Charge
Complete
Standard
Decel Time
C1-02
Thrust Bearing
Decel Time P4-06
Stop due to Run
Command Removed
Output Frequency
Frequency Reference
Limited because
Hand Frequency < P4-05
@ Hand
Frequency