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INVT CHV160A Series - Page 138

INVT CHV160A Series
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C.TY TNHH TỰ ĐỘNG HÓA VIỆT TRUNG 02413.281.181-
0989.984.666
Website:www.viet-trung.com.vn Đ/c:194-Nguyễn Trãi-Võ Cường-
TP.Bắc Ninh
Name
Description
PUMP
REDU
Setting
Range
Factory
Setting
P8.15
TOLERA
0.0~30.0%
0.0~30.0
10.0%
P8.16
PUMP
REDU
FRQ
P8.08~P8.11
P8.08~P8.11
5.00Hz
PUMP
REDU
P8.17
DELAY
0~3600s
0~3600
5s
The
three
parameters
set
the
conditions
of
reducing
pump.
1:
W
hen
frequency
of
variable-frequency
pump
reach
the
frequency
(determined
by
P8.16),
at
the
same
time,
feedback
pressure
>setting
pressure+pressure
toleranceand
it
lasts
for
delay
time
(determined
by
P8.17),
then
system
starts
to
reduce
pump.
2:
100%
of
the
pressure
tolerance
is
corresponding
to
P3.02
(Maximum
of
PID).
3:
Running
frequency
of
pump
reduced
When
there
are
some
grid-frequency
pumps
running,
what
is
more
variable-frequency
pump
decelerate
to
the
frequency
of
pump
reduced,
and
it
last
for
delay
time
(determined
by
P8.17),
when
these
conditions
are
satisfied,
it
starts
to
reduce
pump.
Reduce
grid-frequency
pump:
Resect
the
pump
with
programmable
relay,
and
the
current
variable-frequency
pump
accelerate
to
the
frequency
of
pump
reduced
according
to
the
setted
acceleration
(determined
by
P8.18),
and
go
on
running
with
PID
control.
It
can
stabilize
fluctuate
of
system
pressure
when
reduces
pumps.

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