The PZi4/8.,32'S2 models has a high-grade chemical
injection amount control function and an LCD display
integrated into its compact body. It allows easy and
reliable setup by key operation, control of injection
amount by external input signals, and operation by
level switch inputs, for example.
The PZi8 is provided with an interval function and other
additional modes.
2
2-2
Layout of Operation/Display
Panel
2-1
Overview
.1Q2,
I~
~
Pump head view
/"""1~ 0"'-+~~~
"-*-
I
!
Side view
Important:
In text descriptions, individual operations on dual-func-
tion keys are referred to by the required function.
(Example) .
To start pump operation
START key (START .STOP key)
To determine setting values
SET key (MODE.SET.RESET key)
To change the mode
MODE key (MODE.SET.RESET key)
r[~!
Bottom view
Note: The pump can be mounted within a mounting
pitch of 87 to 110 mm.
-1-
3
pziD.;.D-DDD-DDw-DD
(1) (2) (3) (4) (5) (6) (7) (8) (9)
(1) Series name
(9) Cable specifications
None: Lead wire type 3: UL plug
1: Euro plug 4: Australia plug
2: Swiss plug 5: U.K. plug
.Power supply can be used in a wide range of 100 to
240 V AC. (Wide range voltage supply) The pumlp is
free from the power voltage fluctuation.
.Operation keys and LCD display offer high-precision
setup and a variety of control modes.
.Injection amount can be controlled and pump opera-
tion/stop can be controlled by input signals. An;alog
signals of 4-20 mA DC (0-20 mA DC is available in
the case of PZi8 model), pulse signals (flow meter
signal, open collector, etc.), or open collector si!gnal
can be used for controlling the injection amount.
.Contact signals such as a level switch can be il1put
directly as the operation/stop signal.
4-2 PZi8 (input/output control modlel)
Provided with a control signal output function in addition to the input control functions of PZi4. Signal dulring
operation, operation synchronous pulse signals, and
alarm signals can be output.
.An input port is provided for extensive control.
.Counter and interval functions are provided as the
self control function as standard.
(6) Hose size
1 : dia. 4 x 9 mm
2: dia. 6 x 8'mm
3: dia. 6 x 11 mm
4: dia. 10 x 12mm
5: dia. 1/4 x 3/8 inch
(7) Joint specification
W: Standard
(8) Standards
None: Standard
CE: CE marking compatible
UL: UL standard-compatible
CSA: CSA standard-compatible
6: dia. 9 x 12 mm
7: dia. 3/8 x 1/2 inch
8: dia 12 x 15 mm
9: dia. 12 x 18 mm
.Parameter settings are open to users to enable
detailed setup.
.InpuUoutput port assignment is possible to provide
many selections for functions.
4-3 Special Function Model
PZiP: pH control can be achieved by combination with
a pH meter without the need to use a controller.
PZiR: Residual chlorine control can be achievecj by
combination with a residual chlorine meter \Nith-
out the need to use a controller.
PZiN: Provided with an internal non-linearizer fum::tion
to achieve non-linear control.
":'2-
5
Refer to the "PZD Series Operation Manual."
Check the installation state of the PZi, hoses on the
discharge and suction sides, and power supply and
signal lead connections. If there are no problems for
installation, turn the power ON.
7
.Manual operation:
The number of strokes (spm) can be set directly on
the operation panel.
(Set within the range 1 to 300 spm digitally in singlestep increments.)
.Automatic operation:
Control is performed by changing the number of
strokes per minute by external signals (analog signal,
pulse signal).
.Timer operation
The interval function is automatically turned ON/OFF
according to an internal timer.
(The PZi4 is not provided with this function.)
.Stop input signal control:
Pump operation is controlled by non-voltage contact
signals from a level switch or other device. (External
stops and control by alarms can be set.) (PZi4/8)
7-1 Manual mode
1. Basic operation
(1) The number of strokes can be set digitally in
single-step increments within the range 1 to 300
spm by the UP, DOWN key on the operation
panel.
(2) With the PZiB and special function models, the
display unit (spm) can be switched to % or
mUmin.
2. Purpose of use
.Test operation after pump installation
.Temporary operation, for example, when an error
occurs during automatic operation (e.g. signals
are not output)
.The stroke speed during automatic operation
(multiplication, count, interval) can be changed.
-3-
..r
,
i.
l
~
!
LCD display
During a pump stoppage
During pump operation
During setting
* .)~$:. indicates blinking display.
4.
Operation control signal
Basically, there is no need to supply signals from
the outside in the manual mode. However, operation can be paused by a stop input (continuous signal) from the outside.
7-2Analog mode
2. Purpose of use
Flowrate proportional injection, etc.
3. LCD display
During a pump stoppage
During pump operation
Pressing the UP key
During setting a proportional band
STP P , ..,
~~n","
, .~U..
ANG
During setting a shift
STP S ;SO~
ANG
, . \
I
. \
1
Basic operation
(1) Analog input signals from the outside are
received. and automatic operation is performed
within the range 0 to 300 spm according to the
setting value (proportional band and shift
amount).
(2) The ramp for the number of strokes in response
to analog input can be set by proportional band
(1 to 999% for increments and -1 to -999% for
decrements). This propor- Shift function
tional curve can be shifted Sh~t can be set wiUlln
in parallel towards the verti-
cal axis by a shift amount
(z100%).
(3) The number of strokes
changes linearly in
response to the analog
input signal from the out-
side. -100%! !
Ule range i100%.
c
0
I
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E
~
Analog input (mAl
-50%
4. Operation control signal
4t020mADC
0 to 20 mA DC (PZi8 and special function models only)
7-3
1. Basic operation
Frequency-dividing ratio (1/1 to 1/9999)
(Example) 1/5 dividing ratio
Frequency-division mode
(1) Pulse signals from the outside are received, and
automatic operation IS performed according to
the frequency-dividing ratio setting value.
(2) The frequency-dividing ratio can be set within
the range 1/1 to 1/9999.
S i g na I JlnnnnruuUlnJU1JUlnnruulJillJl1l.118.
Jl JL__Jl l-
Purpose of use
.This mode is used for flowrate proportional injec-
tion, etc. The pump operates proportionally to the
number of input pulses from the outside.
3.
2.
-4-
.Used when there is a large number of pulses
from a flow meter or other instrument, and thla
chemical infection amount is too great. (settirlg in
direction for reducing injection amount)
.Fine-adjustment of discharge volume is per-
formed by the stroke adjustment dial. (See 10.
Setup Examples.)
LCD display
During a pump stoppageC
~~JTP I
DIY
During pump operation
[=~~~~
During setting
-I I I , .-
ISTP -,'9999:-
DI' i II I \
4.
Operation control signal
No-voltage contact or open collector signal input
2. Purpose of use
.This mode is used for flowrate proportional injec-
tion, etc. The pump operates proportionally to the
number of input pulses from the outside.
.Used when there are a few number of pulses
from a flow meter or other instrument, and the
chemical injection amount is too small. (setting
in direction for increasing injection amount)
.Fine-adjustment of discharge volume is per-
formed by the stroke adjustment dial. (See 10.
Setup Examples.)
3.
LCD display
During a pump stoppage
Fp II
I lOUt 'J
During pump operation
I -8 I
3.
7-4
1. Basic operation
Multiplication (can be set within range 1 to 9999)
As the default setting, external signals are canceled when an
external pulse input signal is input again during pump operation. External pulse input si~nals can also be held and stored
to memory by setting in this mode. (PZi8 type special function model only)
(A) Operates five times at 300 spm (fixed)
(8) Operates five times at any value within range 1 to 300 spn
Multiplication mode
(1) Pulse signals from the outside are received, and
automatic operation is performed by the number
of strokes corresponding to the multiplication.
(2) The multiplication can be set within the range 1
to 9999. At this time, the pump operates at the
number of operation strokes (spm) set in the
manual mode.
S i g n a I -] Jl j nnnnn ~no:sec. nnnnn
When set to JUUUULJUUUULJUUUUL
300 spm (A)
ON lime (0.2 to 60 sec.) set in
manual mode
(B)
.Liquids are mixed more uniformly
during inline injection.
4.
Operation control signal
No-voltage contact or open collector signal input
7-5
1. Basic operation
(1) The start signal is received and the pump oper-
(2) The setting value can be set by a combination
(3) Start signal can be selected from an external
(4) The end signal (100 msec one-shot signal) can
2.
Purpose of use
This mode is used in sites where fixed amounts are
repeatedly injected. Operation can be easily
instructed or confirmed from the outside by the
start and end signals, for example, during batch
injection to a container on a conveyor belt.
-5-
During setting
Count mode
ates for the number of preset times. (batch processing)
of 1 to 9999 times and X1, X10, X100, X1000
multiplication. (1 to 9999, 10 to 99990,100 to
999900, 1000 to 9999000)
input and START-STOP key.
be output when operation for the preset count
ends.
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