Yaskawa iQpump Manual Supplement - Manual (Page 77)

YASKAWA TM.iQp.10 Technical Manual Supplement 77
Pump Advanced
P4-01

0115
Pre-charge Level
Pre-charge Level
Sets the level when the drive will run at the pre-charge frequency
(P4-02). The drive will stop when one of the following conditions occurs:
Feedback signal rises above P4-01 level, pre-charge timer
P4-03 expires, or low water digital input is deactivated (H1-†† = 85).
The pre-charge function can only be activated while in a stop condition.
The function is enabled by setting P4-03 to a value greater than 0. When
the function is activated, the drive’s operator display indicates a “Pre-
charge” alarm.
Note: This function is only active in the stopped mode.
If P1-01 = 3, the function is active when there is only one drive running on
the network.
<0034>
Thrust Mode: The pre-charge level is used when the thrust mode is active
for the feedback check. The thrust mode is deactivated when the feedback
exceeds the programmed level in P4-01. A value of 0 disables the thrust
mode feedback check function.
0.0 ~
6000.0
(system
units
P1-02)
0.0 (system
units
P1-02)
Programming
P4-02

0116
Pre-charge Frequency
Pre-charge Freq
Sets the frequency reference used when the pre-charge function is active.
0.00 ~
120.00 Hz
0.00 Hz Programming
P4-03

0117
Pre-charge Time
Pre-charge Time
Sets the maximum allowed pre-charge time.
A value of 0 disables this function. If P1-01 = 3, the function is active
when there is only one drive running on the network.
<0034>
0.0 ~
3600.0 min
0.0 min Programming
P4-04

0118
Thrust Bearing
Acceleration Time
Thrust Acce Time
Sets the thrust bearing acceleration time. When enabled (P4-05 > 0), the
drive output frequency will ramp up to the specified thrust bearing
frequency reference in P4-05 using an acceleration time as specified in P4-
04. The PI mode is automatically disabled.
Once the output frequency reaches the programmed thrust bearing
frequency, the drive automatically switches to PI control and the original
acceleration time (C1-01), and will continue in the normal operation (auto)
mode, unless Pre-charge is enabled, in which case Pre-charge mode occurs.
This function active in the Hand Mode and Auto Mode.
Note: In Auto Mode, the Minimum Pump Frequency will become the
thrust bearing frequency if smaller than the thrust bearing frequency in P4-
05.
In Hand Mode, the minimum frequency is P4-05 when the thrust mode is
enabled. The Pre-charge level is not active in the hand mode.
0.0 ~
600.0 sec
1.0 sec Programming
P4-05

0119
Thrust Bearing Frequency
Thrust Freq Sets the frequency reference used when the thrust bearing function is
active. A value of 0 disables this function. 0.0 ~
120.0 Hz
30.0 Hz Programming
P4-06

<0032>
011A
Thrust Bearing
Deceleration Time
Thrust Dec Time
This deceleration time will be used to bring the drive from Thrust
Frequency (P4-05) to stop when Thrust Mode is active. Any time the Run
Command is removed while the drive is operating in the Thrust Mode
above the Thrust Frequency, this deceleration time will be used once the
frequency reference is at or below the Thrust Frequency.
Note: In Auto Mode, the Minimum Pump Frequency (P1-06) will become
the thrust bearing frequency if smaller than the thrust bearing frequency in
P4-05.
In Hand Mode, the minimum frequency is P4-05 when the thrust mode is
enabled. The Pre-charge level is not active in the hand mode.
0.0 ~
600.0 sec
1.0 sec Programming
P4-07
<0032>
011B
Feedback Fault Auto
Restart Enable
Fdback Flt Rstrt
Setting to enable/disable Auto Restart for the following iQpump
transducer/feedback faults (N = disable/Y = enable):
LL: Low Level Feedback (P1-07)
HL: High Level Feedback (P1-09)
TL: Transducer Loss (b5-12)
0: TL = N HL = N LL = N
1: TL = N HL = N LL = Y
2: TL = N HL = Y LL = N
3: TL = N HL = Y LL = Y
4: TL = Y HL = N LL = N
5: TL = Y HL = N LL = Y
6: TL = Y HL = Y LL = N
7: TL = Y HL = Y LL = Y
Note: Parameter L5-01 must be set to “1” and program L5-03 must be set
to the applicable time.
0 ~ 7 0 Programming
 Denotes that parameter can be changed when the drive is running.
Parameter
No.
Addr.
Hex
Parameter Name
Digital Operator
Display
Description
Setting
Range
Factory
Setting
Menu
Location