Tacmina PZi Series User manual

"
i
-Applicable Models-
PZi4-32.52
PZi8-32.52

-Outline SettingParameters-
119Setting Up Parameters 12
9-1 Parameter Setup Flow 12
9-2 Setting the Parameters 12
Outline
2External Dimensions 1
2-1 Overview 1
2-2 Layout of Operation/Display Panel 1
3Model Selection Guide 2
4Features 2
4-1 Common Terms 2
4-2 PZi8 (inpuUoutput control model) 2
4'"3 Special Function Model 2
5Installation , 3
10 Setup Examples 13
10-1 Example of Flow Rate Proportional
Control in Chlorine Sterilization by a
Pulse Transmitting Flow Meter 13
10-2 Control by 2-point Level Switch 14
10-3 Pulse Signal Noise Countermeasures 15
10-4 Flowrate Display 15
10-5 Control of Multiple Pumps by a Single
Signal 15
6Preparing for Operation .. .3 11 Input/Output Port Assignments Change 16
11-1 InpuUOutput Signals (Port Assignments)16
Setting Modes -
Specifications
7 Mode Functions7-1 Manual mode7-2 Analog mode7-3 Frequency-division mode
7-4 Multiplication mode7-5 Count mode7-6 Interval mode ' '
12 Specifications 17
12-1 Functions 17
12-2 Display 17
12-3 Alarm Display, External Alarm Output 17
12-4 I/O Signal Specifications (number of
ports) 17
12-5 Terminal Block Connections 17
8
-Data -
13 Data 18
13-1 List of Parameters 18
13-2 Table 1: Input Signal Assignments 19
13-3 Table 2: Output Signal Assignments ..19
13-4 Alarm 19
13-5 Display Details in Different Statuses in
Each Mode 20
Setting Up Operation 7
8,.1 Changing the Operation Mode 7
8-2 Basic Operation Flow 7
8-3 How to Change the Operation Mode 8
8-4 Setting Manual Mode
(changing the number of strokes) 9
8-5 Setting the Analog Mode 9
8-6 Setting the Frequency-Division Mode 10
8-7 Setting the Multiplication Mode 10
8-8 Setting the Count Mode 11
8-9 Setting the Interval Mode 11
-(1)-
,
3
3
4,
4
5
5
6

Connecting Signal Leads
Signal Specifications page 17
Signal Wiring and Terminal Block Diagram page 17
InpuUOutput Port Assignments Change page 16
InpuUOutput Signal Assignments page 19
Trial Operation
Changing the Mode page 8
Setting Manual Mode page 9
Setting Up Operation
Basic Operation Flow page 7
Changing the Mode page 7
Setting Individual Modes page 9
Setting Up Parameters
Parameter Setup Flow page 12
Setting the Parameters page 12
List of Parameters page 18
System Design
Functions in Each Mode page 3
Basic Operation Flow , page 7
Setup Examples page 13
Data
Specifications page 17
List of Parameters page 18
Error Codes : page 19
Display Details page 20
-(2)-

2-2 Layout of Operation/Display
Panel
1
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
2-1 Overview
.1Q2, I
I~!
r[~!
~
Pump head view 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)
/"""1~0"'-+~~~
"-*-
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)
(9) Cable specifications
None: Lead wire type 3: UL plug
1: Euro plug 4: Australia plug
2: Swiss plug 5: U.K. plug
(1) Series name
PZi: PZi series 4
4-1 Common Terms
.Power supply can be used in a wide range of 100 to
240 VAC. (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.
(2) Pump model
4: Input control
8: Input/output control
(3) Model type
I I
~[lJ=300 mL/min
I-.::T
Number of 0 digits
32: Rated discharge volume 360 mL/min
52: Rated discharge volume 540 mUmin
(4) Liquid end materials
Type Pump head
FTC: PVdF
VEC: PVC
VFC: PVC
STC: SUS304
6TC: SUS316
Valve seat
PTFE
EPDM
Fluro rubber
PTFE
PTFE
Check ball
Ceramic
Ceramic
Ceramic
Ceramic
Ceramic
(5) Hose material
H: Soft PVC
T:PE
F:PTFE
(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
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
4-2 PZi8 (input/output control modlel)
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.
(7) Joint specification
W: Standard
(8) Standards
None: Standard
CE: CE marking compatible
UL: UL standard-compatible
CSA: CSA standard-compatible
":'2-
Provided with a control signal output function in addi-
tion 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.
.Parameter settings are open to users to enable
detailed setup.
.InpuUoutput port assignment is possible to provide
many selections for functions.

57
Refer to the "PZD Series Operation Manual."
.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 single-
step 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)
,i.
l
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.
~
..r!
-3-
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.

3.
LCD displayDuring apump stoppage 2. Purpose of use
Flowrate proportional injection, etc.
3. LCD display During a pump stoppage
During pump operation
During pump operation
During setting
Pressing the UP key
4. Duringsettinga proportionalband
STPP , ..,
~~n","
, .~U..
,.\
ANG
* .)~$:.indicates blinking display.
Operation control signal
Basically, there is no need to supply signals from
the outside in the manual mode. However, opera-
tion can be paused by a stop input (continuous sig-
nal) from the outside.
During setting a shift
STPS ;SO~
I.\
ANG
7-2 Analog mode
14. Operation control signal
4t020mADC
0 to 20 mA DC (PZi8 and special function models only)
7-3 Frequency-division mode
1. Basic operation
(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.
Frequency-dividing ratio (1/1 to 1/9999)
(Example) 1/5 dividing ratio
SignaI JlnnnnruuUlnJU1JUlnnruulJillJl1l.118.
Jl JL__Jl l-
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- Shiftfunction
tional curve can be shifted Sh~tcanbesetwiUlln
Ulerangei100%.
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%! !
Analoginput(mAl
c
0
I
"
E
~-50%
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 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)
-4-

.Fine-adjustment of discharge volume is per-
formed by the stroke adjustment dial. (See 10.
Setup Examples.)
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 stoppageC
~~JTPI
DIY
During pump operation
[=~~~~ 3. LCD display
During setting
-I I I , .-
ISTP-,'9999:-
DI' i II I \
During a pump stoppage
Fp II
I lOUt 'J
4. Operation control signal
No-voltage contact or open collector signal input
During pump operation
I -8 I
During setting
7-4 Multiplication mode
1. Basic operation
(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.
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 opera-
tion. External pulse input si~nals can also be held and stored
to memory by setting in this mode. (PZi8 type special func-
tion model only)
(A) Operates five times at 300 spm (fixed)
SignaI -] Jl jnnnnn ~no:sec. nnnnn
When set toJUUUULJUUUULJUUUUL
300 spm (A)
(8) Operates five times at any value within range 1 to 300 spn
ONlime (0.2 to 60 sec.) setin
manualmode
4. Operation control signal
No-voltage contact or open collector signal input
7-5 Count mode
1. Basic operation
(1) The start signal is received and the pump oper-
ates for the number of preset times. (batch pro-
cessing)
(2)The setting value can be set by a combination
of 1 to 9999 times and X1, X10, X100, X1000
multiplication. (1 to 9999, 10 to 99990,100 to
999900, 1000 to 9999000)
(3)Start signal can be selected from an external
input and START-STOP key.
(4)The end signal (100 msec one-shot signal) can
be output when operation for the preset count
ends.
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.
(B)
.Liquids are mixed more uniformly
during inline injection.
-5-

3. LCD display
During a pump stoppageL:=::I!?J
;;;;:
Duringpumpoperation
[=:~J
2, Purpose of use
This mode can be used in sites where control is
performed by alternate ON/OFF operation.
.Can be used for skipped operation atsites, for
example, small amounts of chemicals are
injected for air conditioning.
.Small amounts can be injected by operation
control by combining intermittent operation
and stop input.
During setting
ISTP :ij~: I
I ~T'r'xI~'I
3. LCD display During a pump stoppage
ISTPmt ! I
l_= 'NT I m::_J
During setting (Multiple)
During pumpoperation
I -ISm," I
I !NT' -' m'"I
When the ON time is set
STP , \ " "
IS'-1m -
..blin
'NT I I \
4. Operation control signal
[Start signal]
No-voltage contract or open collector signal input
START-STOP key
7-6 Interval mode
4. Operation control signal
Stop input: Operation is paused by input of an
external stop signal.
1. Basic operation
(1) Intermittent operation by the preset ON and
OFF times is repeated.
* The ON/OFF state during a start can be
changed by parameters.
(2) The setting values of each of the ON and OFF
times is set from 1 to 9999 minutes (in 1-minute
increments).
(3} Operation can be paused by input of an external
stop signal.
IChemical injection pump output ON/OFF state
Stop input ION(continuousOFF
si i I
I ,--, I
I ON r,T2r--1T2.r-1 h~.~
OFFJ' T1 ~O~ T1 ~~~~-.b~
T1 T1
Operation Time Chart
1) T1 = ON time setting (1 to 9999 min)
T2 = OFF time setting (1 to 9999 min)
2) When the stop signal turns ON, counting of both T1 and T2
is discontinued.
* When an external stop is applied, timers in the interval mode
also are paused.
-6-

8 Setting Up Operation
8.1 Changing the Operation Mode
For PZi, the manual and automatic (pulse, analog, etc.)
control methods can be switched by changing the
operation mode. To change the operation mode, hold
down the MODE key for at least 0.5 seconds with the
pump stopped. This sets the pump to the setup mode.
If the MODE key is held dow~ longer, the screen
enters setup screen for each mode. Do not hold the
MODE key down longer when changing the operation
mode.
Remarks:
0 If the key is not pressed for five seconds at [Setting
state], the newly set value is canceled, and the STP
state is returned to.
0 In the [Setting state], the setting value blinks, and
lights by pressing the ..~ keys. The value is
scanned.
I:t
8-2
*1: The parameter setup screen is moved by pressing the key for three seconds with the SET key pressed only
during a manual pump stoppage.
*2: In the manual mode only, the setting value can be changed by pressing the'" ...keys during both a pump stop-
page and operation" and the setting value determined by pressing the SET key.
*3: The MODE key and the SET key are the same. To change the operation mode with pump operation stopped,
release the MODE key within 0.5 seconds. Holding the MODE key down for 0.5 seconds or longer sets the pump
to the setup mode. -7-

8-3 How to Change the Operation Mode
Mode Display Operation
(Power ON)
Explanation
Manual
SET/RST
e
The display shows the default state. (manual mode) When the power is next turned OIN,
the previous operation is stored to memory. (If the power is turned OFF and then bacl;
ON again during operation. the pump starts up in the run mode.)
"MAN" is displayed at the bottom of the screen.
To change the mode, press the MODE key. (The manual mode changes to the analog
mode.)
This is the display screen for the analog mode.
"ANG" is displayed at the bottom of the screen.
The current input mode (4-20mA) is displayed.
Analog
SET/RST
ePressing the MODE key changes the mode as follows:
Manual --Analog --Frequency-division --Multiplication.
This is th~ display screen for the frequency-division mode.
"DIV" is displayed at the bottom of the screen.
Pulse
Frequency-
division
SET/RST
eThis is the display screen for the multiplication mode,
"MUL" is displayed at the bottom of the screen,
Pulse
multipli-
cation
SET/RST
ePressing the MODE key while the pulse multiplication mode is stopped returns the PZi4
to the manual mode.
On the PZi8 and special function model, the mode changes to the count mode.
This is the display screen for the count mode.
"CNT" is displayed at the bottom of the screen.
Count
SET/RST
eThis is the display screen for the interval mode.
"INT" is displayed at the bottom of the screen.
The ON lime is displayed.
Interval
SET/RST
ePressing the MODE key while the interval mode is stopped returns to the manual mode.
Note 1:The mode can be changed only when pump operation has stopped.
Note 2: The currently set mode is displayed abbreviated as MAN, ANG, etc. at the bottom of ttJescreen.
Note 3: When changing the operation mode, do not hold the MODE key down for 0.5 seconds or longer.
-8-

8-4 8-5 Setting the Analog Mode
&1
Setting Manual Mode
(changing the number ofstrokes)
Display I Operation Explanation
c~~~ Default is 300 spm.
"MAN" is displayed at the
bottom ofJhe screen.
c~~~
1MAN 138 1
ebe changed during operation @:.!)MOD Change the number of strokes
by the UP. DOWN keys. and
determine the setting value by
the SET key.
.The number of strokes (spm) set here is reflected in the multiplication. count and
interval modes.
~[:~=~
[:~::::~:::~~~:!~~~!:~=J
.Settings cannot be changed during operation. To change a selling, first stop pump
operations.
.The current analog input value is displayed by pressing the@or(!)<ey during a
pump stoppage.
.Set a minus (-) value to set a decrease in the proportional band selling.
-9-

8-6 Setting the Frequency~Division
Mode 8-7 Setting the Multiplication Mode
Explanation
Default is "1"
I (When the display indicates 1,
the setdividing ratio is 1/1.)
"01V" is displayed atthe bottom
of thescreen.
Holding down SET key for at
least 0.5 seconds with pump
stopped enters the dividing
ratio setup screen.
The current value starts
blinking.
I::::~'::~~~~~::!::::~]
Display
ISTP Il
I MI"- 'I
SET/RST
eC==~:LJTP: I ..
I .\
MUL
C==~]JTP- 8-
IIUL '. \
SET/RST
e
Press the UP,DOWN key to set
Ine dividing ratio wiUlin the
range 111to 119999 (In Ulis
setup, setthe denominator of
dividing ratio.)
The setting value is displayed
but not yetdetermined.
I (The example in this screen is
1115)
Press Ule SET key to determine
Ine setting value.
(To cancel the setting value, do
not operate Ule key for five
seconds.)
I The stop state in the frequency-
! division mode is returned to.
This completes the setting, and
me display stops blinking and
stays lit.
~
'"iP DIV IS I I::~::::~::~~~:~~~~:::J
START Press the START key to start
pump operation.
STP goes out and pump
operation starts.
The pump starts to operate
according to external signals. I 81
I MOL"" I
.After setting the above, fine-adjust the discharge volume using the stroke
adjustment dial matched to the calculated dividing ratio value .After selling the above, fine-adjust the discharge volume using the stroke
adjustment dial matched to the calculated multiplication value.
-10-

8-8 Setting the Count Mode 8-9 Setting the Interval Mode
~isplav ! Operation Ex
"lNr' is displayed at the bottom
of the screen. ON or OFF is
displayed at the left.
If the start operation state is
ON, ON is displayed.
(This can be changed In
parameter P-30.)
SET/RST
eSET/RST
eHolding down SET key for at
least 0.5 seconds with pump
stopped enters the ON time
setup screen.
ON is displayed at the left of
the screen, and the present
value of the ON time blinks.
Ex lanation
"CNr' and the multiplication
factor (X1, X10, X100, X1000)
are displayed at the bottom of
thescreen.
Holding down SET key for at
least 0.5 seconds with pump
stopped enters the strokes
setup screen. ,
! The present value starts to Iblink.
Press the UP,DOWN key to
set the number of strokes
within the range 1 to 9999.
Press the UP,DOWN key to set
the ON time within the range 1
to 9999 minutes.
The setting value is displayed
but not yetdetermined. ~
The setting value is displayed
but not yetdetermined.
Press the SET key to determine
the selling value.
[To cancel the setting value, do
notoperate the key for five
seconds)
The selling value isdetermined,
and the multiplication factor
setup screen isentered.
The number of strokes lights.
and multiplication starts to blink
SET/RST
eSET/RST
e
..."" 1-STP -
m"'"
~ --' I .'
Press the SET key to
determine the setting value.
(To cancel the setting value. do
notoperate the key for five
seconds)
After the setting value is
determined, the display moves
to the OFF time setup screen.
The ON display goes out, and
I OFF is displayed.
I Also, the present value of the
I OFF time blinks.
Press the UP.DOWN key to set
the OFF time within the range
1to 9999 minutes.
Press the UP,DOWN key to
change the multiplication in
fourstages: X1, X10, X100 or
X1000.
The multiplication factor setting
value is displayed but not yet
determined.
The setting value is displayed
but not yetdetermined.
SET/RST
eSET/RST
e
Press the SET key to determine
the setting value.
(To cancel the setting value, do
npt operate the key for five
seconds.)
The setting value is determined, i
and stop state in the count:
mode isentered. I
The number of strokes and
muttiplication factor light 10
indicate that the settings are
determined.
Press the START key to start
pump operation. In thisstate,
the pump starts to operate by
the start signal from the outside.
(The pump startup mode can be
changed in parameter P-31.)
Press the SET key to
determine the setting value.
(To cancel the setting value, do
notoperate the key for five
seconds.)
The setting value is
determined, and the interval
stop slate is returned to.
ON is displayed at the left, and
I the setting value of the ON
lime is displayed
START
,
Press the START key 10 start
pump operation.
Note: This function is not provided on the PZi4 Counting starts
is decremented
setting value.
,15.1~::~."'1
ON lime
and the display
from the
138 137...
1--===-:
OFF lime
Note: This function is not provided on the PZi4.

9-2 Setting the Parameters
9-1 Parameter Setup Flow
Display
C=~~J
Remarks:
For meanings of parameters, refer to "13-1 List of
Parameters",
;1~;
'::1
:
~~~
.
c==~~
Important:
.Do not change the parameters that are not explained
in the parameter list. They are used for internal pro-
cessing. Note: Parameters can be continuously changed luntil
the STOP key is pressed.
Remarks:
.To return the parameters to the values at the factory
shipment time, select 1 in P-80 and then press the
SET key.
~~~k~~
-12-

2) Calculate the actual injection rate.
* The following example assumes that undilut-
ed chemical is injected as dilution is not desir-
able as a gas lock countermeasure or to
ensure uniform mixing
Actual injection rate Q mL/min
= Undiluted chemical injection rate Q'mL/min X dilution ratio
= 13.9X 1.0
= 13.9 (mUmin) = 834 (mUhr)
Accordingly. the injection rate should be 13.9
mUmin (12% sodium hypochlorite solution) by the
PZi pump at the maximum flow rate.
10 Setup Examples
--
10-1 Example of Flow Rate Proportional
Control in Chlorine Sterilization by a
Pulse Transmitting Flow Meter
PZi model pumps receive the no-voltage contact pulse
signal from the outside to control the pump injection
amount (number of strokes) of the pump.
The following describes two examples of pump control
achieved by combination with a pulse generating type
flow meter.
3) Set the frequency-dividing ratio.
Calculate the frequency-dividing ratio N by the fol-
lowing formula:
Frequency-dividing ratio N
Numberofpulses on flow Dischargevolume per
-meter per unittime n (pulses/hr) X pump stroke V (mUstroke)
-.. Actual injection rate Q per unit time (mUhr)
n = Max. flow rate of raw water (Uhr)
Flow rate (L) per pulse of flow meter (from flow meter
specifications)
10000
10-1-1 Using the frequency-division mode
[Conditions]
Max. flow rate of raw water 10 m3/hr (167 L/min)
Target chlorine injection rate 10 mg/L
Sodium hypochlorite concentration 12%
Pump model pZiD-32 type
(injection amount per stroke: 1.0 mL)
(1) Select the flow meter.
TACMINA provides the pulse generating type flow
meters shown in the following table. Select the
optimum model of flow meter according to the pipe
aperture and the flow rate of rawwater.
In this example, NVW-50RC is selected.
-5
= 2000 (pulses/hr)
v = 1.2 (mL/stroke) (from PZiD-32 type pump specifications)
N= 2000X 1.~ = 2.9
83.4
ModeJ Pulse (UP) As the frequency-dividing ratio must be an integer
not greater than the calculated value, discard the dig-
its pastthe decimal point. The resulting value is "2".
LN-13DRC
LN-20RC
LN-25RC
VWK-30RC
VWK-40RC
VWK-50RC
NVW-50RC
VW-65HRC
NYW-75RC
NVW-100RC
I,".; ,...IVW-125RC'YW-150RC'VW-200RC
VW-250RC
VW-300RC
Flow rate I
range (m'/hr)
0.15101.2
0.2100.16
0.23 101.8
0.4 106
0.4106.5
0.8 109.6
1.251015
1.151020
2.5 1030
41048
51060
1.51090
1310156
11.510210
22.510210
0.1
0.1
0.1
1
1
5
5
5
5
5
50
50
50
50
50
Connection
aperture
R1/2
R3/4
R1
R1 1/4
R11/2
R2
JIS10K 50A
JIS1,OK65A
JIS10K BOA
JIS10K 100A
JIS10K 125A
JIS10K 150A
JIS10K 200A
JIS10K 250A
JIS10K 300A
4) Set the frequency-dividing ratio.
'SIP 2 I
I DIY '- I
5) Set the stroke adjustment dial.
As digits for the frequency-dividing ratio past the
decimal point have been discarded, the injection
rate will be too great if this value is left as it is. To
compensate for this, fine-adjust using the stroke
adjustment dial.
Calculate the setting value by the following formula.
(2) Set the dilution ratio.
1) Calculate the logical injection rate with undiluted
chemical (Q') Frequency-dividing
Stroke adjustment dial ratio setting value
setting value (%) = Frequency'-dividing (5)
ratio calculated value
= -L X 100 (%)
2.9
= 69.0 (%)*
.This numerical value is for reference purposes only.
Injection rate Q' mL/min Max. flow rate of
= Target injection rate (mg/L) X raw water (m3/hr)
60 X
=10X..:!!:.-X~
100
Sodium hypochlorite
concentration (%)
60
= 13.9 mL/min 12

10-1-2 Using the pulse multiplication mode
As the pulse-generating unit (per pulse) of the flow
meter is large, it is more convenient to use the "multi-
plication mode" in the following instances with the undi-
luted chemical injection method that uses the "frequen-
cy-division mode" as in 7-3.
.When the injection interval is too wide. which may
cause uneven concentration, or
.When diruted chemical is used
* This numerical value is for reference purposes only.
(5) Set the number of strokes (spm).
If the flowmeter signal is input at the default setting,
liquid will be injected at a rate of 300 spm.
However, increasing the interval up to the rlext
pulse will result in uneven injection.
On PZi pumps, the number of strokes (spm) carl be
changed in the manual mode setting.
10000
Injection unevenness can be reduced by setting to
as small a value above 17spm.
In this example, a value between 17 to 20 spm is
suitable.
10-2 Control by 2-point Level Switch
[Conditions]
Assume that a flow meter having a large pulse-gener-
ating unit is selected in 10-1-1.
Transmission unit of flow meter (UP) 50(UP): 0.05 (m3/P)
Target chlorine injection rate 10 mg/L
Sodium hypoch)orite concentration 12%
Pump model pziD-32
(injection rate per pulse: 1.0 mL)
(1) Calculate the logical injection rate Q (mL) per flow
meter pulse.
: Flow rate (m3)per flow meter pulse X Target
injection rate (mg/L) X 100/Sodium hypochlorite
concentration (%)
: 0.05 X 10 X 100/12
':.4.17
{2} Set the multiplication factor.
: Logical injection rate (mL) per pulse /Injection
rate (mL) per pump pulse
: 4.17/1.0
.=.4.17times
Remarks:
.The advantages of this method include the following:
-The concentration is more likely to be uniform in
raw water the higher the dilution ratio increases.
-Response during control is faster and accuracy
increases.
-There is less clogging of injection points.
(3) Set the pulse multiplication factor.
Set the multiplication factor as a value greater than
the calculated value and as the integer closest to
the calculated value. In this example, set "5".
(4) Set the stroke adjustment dial.
As the numerical value for the multiplication factor
has been rounded up. the injection rate will be too
great if this value is left as it is. To compensate for
this, fine-adjust using the stroke adjustment dial.
(1) Change the parameters.
Change P-06 (IN3) to "6: Level switch input".
Set P-12 to "0" (operation is continuedwherl an
alarm occurs).
Set P-Q8to "5" (level error alarm is output).
(2) Connect the signals.
.Connect the lower limit signal (IN3) across pirls 7
(IN3) and 8 (COM1) on the 8-pin connector.
.Connect the lower/lower limit signal (IN2) across
pins 6 (IN2) and 8 (COM1).
.Connect the alarm output signal (OUT1) acro:ss
pins 9 (OUT1) and 11 (COM2).
-14-
Shortest pulse interval:
Max. flow rate of raw water (Uhr)
n = = = 200 (pulsle/hr)
Flow rate (L) per pulse of flow meter 50
= 3.3 (pulse/mln) = 1 pulse/18 seconds
Number of pump strokes (spm):
As the pump should operate by five strokes per 18-second interval

* On the PZiB and special function model, two signals
can be output.
* After receiving the operation sync pulse, the PZi can
also perform frequency-division and multiplication on
that signal.
* When the dividing ratios differ, connection is per-
formed using the lower of the two dividing ratios
(larger number of pump operations).
10-3 Pulse Signal Noise
Countermeasures
If the influence of power supply frequency causes the
pump to malfunction during pulse input, this noise influ-
ence can be reduced by switching to the low-speed
port. (In the case of the signal less than 600
pulse/sec. )
* See "12-4 I/O Signal Specifications."
(1) Change the parameters.
Change P-04 (IN1) to "0: Unused".
Change P-04 (IN2) to "1: Pulse input signal".
(2) Connect the signal.
Connect the pulse signal (IN2) across pins 7 (IN2)
and 8 (COM1) on the 8-pin connector.
(1) Set the parameters.
Set P-8 and P-9 of the PZi8 (1) pump to "2:
Operation sync pulse output".
* The operation sync pulse output is set for both
OUT1 and OUT2.
* Pumps (2) and (3) are used in the frequency-divi-
sion (multiplication) mode.
10-4 Flowrate Display
The indication (setting) in each mode can be set to
mUmin by setting the maximum discharge volume (at
300 spm) of the pump in parameters.
(1) Set the parameters.
.Set P-10 to 0.1 to 600 (mUmin).
* Set according to the pump specifications or
actual measured value.
.Set P-11 to "2: mUmin"
* Changing the strpke adjustment dial causes the
indicated value to deviate.
The indicated value is the value calculated
from the number of strokes (spm).
10-5 Control of Multiple Pumps by a
Single Signal
In the following kind of application, a pulse divider is
generally used. This, however, is not required on the
PZi8.
IOperationsync, Operationsync r---
PZi8 I Dulse PZi8 pulse .PZiD
(1) (2) (3)
\-.

Input/Output Signals (Port
Assignments)
The PZi8 and special function model has three pulse
input ports and two pulse output ports. However, these
functions are not assigned in the standard specifica-
tion. In this case, the ports can be switched to make
effective use of the limited number of I/O ports.
Note. however. that functions other than "0: Unusable"
cannot be assigned in duplicate on input ports.
* See "13-2 Table 1: Input Signal Assignments" and
"13-3 Table 2: Output Signal Assignments."
2) Setting of output signals (The following functions
can be assigned to outputs 1 and 2.)
O.Unused
Disables use of the output signal port.
1.Package alarms
The signal is output when an alarm signal is
input. This signal is canceled when the alarm is
reset by the alarm reset signal or RESET key.
2.0peration sync pulse output
A single pulse signal (pulse width 40 msec) is
output per stroke synchronized with solenoid
drive.
3.0peration signal output
This signal is output continuously during opera-
tion.
Output is also stopped during a stop performed
on the operation panel and a pause from the out;.
side.
4.End signal output
When the count preset in the count mode is
exceeded, the end signal (100 msec width) is
output.
5. to 8. Individual alarm outputs
Alarms are output individually. See "13-3 Table
2: Output Signal Assignments."
3) How to assign ports
Set the respective function No. to parameters F'-O4
to P-O6and P-O8to P-O9.
4) Cautions when Assigning Ports
1.Pulse input port
.The input port cannot be assigned in duplicate
except for assignme~t of "Unusable."
First, set the duplicate assigned port to "0:
Unused" and then set the function No. to thE~
desired port.
.Input control functions on the PZi4 are fixed
and cannot be changed.
1) High-speed port
Pulse transmitting flow meter signals carl be
used only on the high-speed port.
2) Low-speed port
Malfunction caused by noise can be pre-
vented by using the low-speed port if maJ-
function occurs by pulse input.
2.0utput ports
.All assignments for output ports can be
assigned twice or more.
.Two output ports provided.
1) Setting of input signals (The following functions can
be assigned to inputs 1 to 3.)
O.Unused
Disables use of the input signal port.
(This function is used, for example, when chang-
ing ports to avoid duplicate assignments.)
1.Pulse input signal
Performs pulse input for frequency-division and
multiplication.
2.Stop input
Pump operation can be paused by inputting this
signal during operation.
(Pump operation is stopped by shorting across
terminals, and pump operation is started by leav-
ing terminals open.)
When this signal is input, only the STOP keY1s
enabled and pump operation is stopped. The
function of other keys is not accepted.
3.Present value reset input
Resets and restarts the current value of the count
mode and interval modes.
4.Alarm reset input
Cancels alarm output that is output when an
alarm occurs, or pump stoppage according to the
setting when an alarm occurs. Ifthe alarm re-
occurs even after performing a reset, the alarm
cannot be cancelled unless the alarm-reset sig-
nal is entered once more.
5.Unused (setting prohibited)
6.Level switch signal input
Alarms are displayed and output when the signal
input is ON.
The pump operating state when an alarm occurs
can be set by parameter P-12. (default: pump
pause) -16-

12 Specifications
-
Specifications
12-1 Functions PZi4 PZi8 Special Function Mode!
Manual operation (0 to 300 spm setting) KeyOperation Key Operation KeyOperation
Automatic operation (Analog signal input)
Proportional band setting, shift setting 000
Automatic operation (Pulse signal input)
Frequency-dividing ratio 1/1 to 1/9999
Multiplication 1 to 9999 0a0
0
ISpecialFunction Mode! *1
12-2 Display
Ispm display spm
0
0
spm, %, mL/min spm, %, mL/min
Mode state display (current mode, unit) 0
00
0
Setup screen, parameters, and error display
12-3 Alarm Display, External Alarm Qu'
IExternal stop input I
tput
Display
Display
Display
Display, output Display, output
Input analog signal Out-of-range error *2 Display, output Display, output
Input pulse s!gnal Memory over *2 Display, output Display, output
12-4 110Signal Specifications (number of ports)
1 port
(IN1) 1 port
(IN1) 1 port
(IN1)
1) Digital input (high-speed port)
No-voltage pulse or open collector
Input resistance Approx. 2k,Q.
Max. number of pulses 7500 pulse/min
Min. width of pulses 4 msec (whenON time)
1 port
(IN2) 2 ports
(IN2, 3) 2 ports
(IN2, 3)
2) Digital Input (low-speed port)
No-voltage pulse or open collector
Input resistance Approx. 2k.Q.
Max. number of pulses 600 pulse/min
Min. width of pulses 50 msec (whenONtime)
3) Analog input
Input resistance 1 port
4 to 20 mA DC 1 port
4t020mADC
0 to 20 mA DC
1 port
4 to 20 mA DC
0 to 20 mA DC
Approx. 110 .0.
2 ports
(QUT1.2) 2 ports
(OUT1, 2)
None
4) Digital output
3 mA DC, 25 V or less
*1 See "4-3 Special Function Model"
*2 Automatic operation during the signal input
12-5 Terminal Block Connections * Use shielded cable for the signal lead, and connect
the shield to terminal No.8. (input side) Leave the
shield on the signal source lead on the output side
connected to terminal No.11 open. (The shielded
cable must be of a cross-sectional area of 0.5 mm20r
more, and be extended up to 100 meters only.)
-17-