• When the “Disable Pre-Charge” digital input (H1-
oo
= 8C) is closed, even momentarily
• When the PID feedback satisfies Pre-Charge level (P4-01):
Feedback is greater than Pre-Charge Level (P4-01) (forward-acting PID, b5-09 = 0)
Feedback is less than Pre-Charge Level (P4-01) (reverse-acting PID, b5-09 = 1)
• When the “Low Water” digital input (H1-
oo
= 8C) deactivates. A digital input must be programmed to “Low Water”
(H1-0
o
= 8F). The input is configured in P1-30 (0: normally open, 1: normally closed).
n
Related Parameters
No.
Parameter Name
Setting Values
P4-01
Pre-Charge Level
Default: 0.0 PSI
Minimum: 0.0
Maximum: 6000.0
P4-02
Pre-Charge Frequency
Default: 0.0 Hz
Minimum: 0.0
Maximum: [E1-04]
P4-03
Pre-Charge Time
Default: 0.0 min
Minimum: 0.0
Maximum: 3600.0
P4-05
Pre-Charge Loss of Prime Level
Default: 0.0 A
Minimum: 0.0
Maximum: 1000.0
P4-06
Pre-Charge Frequency 2
Default: 0.0 Hz
Minimum: 0.0
Maximum: [E1-04]
P4-07
Pre-Charge Time 2
Default: 0.0 min
Minimum: 0.0
Maximum: 3600.0
P4-08
Pre-Charge Loss of Prime Level 2
Default: 0.0 A
Minimum: 0.0
Maximum: 1000.0
H1 Multi-Function Digital Input Settings
H1-
oo
Setting
Function
Description
8C
Disable Pre-Charge
Closed: Pre-Charge disabled.
H2 Multi-Function Digital Output Settings
H2-
oo
Setting
Function
Description
A4
Pre-Charge
Closed: Drive is in Pre-Charge mode.
R un
C omm an d
P re-C ha rge
Sing le speed – C om plete via tim er
“Pre-cha rge
Active”
M essage &
D igital Ou tpu t
(H 2-0x = A4)
Ou tpu t
F requen cy
P 4-03
Pre-cha rge T im e
P4-02 – Pre-cha rge F requen cy
P4-01 Pre-cha rge level = 0.0 AND P4-07 Pre-cha rge T im e 2 = 0.0 m in
PID N OT
disab led
Figure 4.8 Pre-Charge Single Speed Complete via Timer
4.6 U1000 iQpump Presets and Functions
120
YASKAWA TOEPYAIUPW01A YASKAWA AC Drive - U1000 iQpump Matrix Drive User Manual
