Pump Solutions Group PZiG Series - Manual (Page 21)

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Operation
●Proportional band (PB)
With the proportional
band (PB), set the
inverse number of the
line's ramp.
Example: When the PB
is 100%
Proportional band (PB) = ( X / Y) ✕ 100
= (1/1) ✕ 100 = 100%
●Purpose of use
These settings are used for proportional injection, for
example.
●Operation panel display (when scaled by pH)
●Set point (SP)
For the set point (SP),
set a target value on the
X-axis (horizontal axis).
Set Point/Proportional Band in the Analog Mode
Setting the Discharge Volume
Setting the Set Point/Proportional Band in the Analog Mode
●Operation control signal
4 to 20 mA DC
Display Operation Explanation
If the pump is operating, press the
STOP key to stop pump operation.
Press the SET key to enter the set
point setting screen.
"S" is displayed so that you can tell
that the screen is the set point
setting screen.
Press the UP/DOWN key to set the
set point.
The setting range is the same as the
selected scaling range.
The following instance is for scaling
No.1 0.0 to 14.0 (for pH).
To operate the pump at 100%
capacity at pH 0 and stop operation
at pH 7.0 in alkali injection, set 7.0 as
the SP and -50% as the PB.
The screen on the left shows that the
set point is set to 7.0.
The setting value is displayed but not
yet applied.
To apply the value, press the SET
key. After the value is applied, the
screen enters the proportional band
(PB) setting screen.
The default is 100%.
"P" is displayed so that you can tell
that the screen is the proportional
band setting screen.
Press the UP/DOWN key to set the
proportional band.
The setting range is -999 to 999%
(excluding 0).
The setting value is displayed but not
yet applied.
To apply the value, press the SET
key.
The state returns to the stopped
state in the analog mode.
Press the START key to start pump
operation.
The upper row displays the number
of strokes.
If the screen on the left is not
displayed, press the MODE key until
it is displayed.
MODE
START
STOP
START
STOP
SET
RESET
SET
RESET
SET
RESET
(300spm)
100%
0%
(0spm)
0
0.0
0.00
50
7.0
1.00
100%
14.0 pH
2.00 mg/L
PB:-75%
75
PB:-150%
PB:25%
PB:50%
Ex:
Set point
(SP)
300spm
0spm
PB:-50%
PB:-100%
PB:50%
PB:100%
1.0 ( Y)
1.0 ( X)
(300spm)
100%
(150spm)
50%
0%
(0spm)
0
0.0
0.0
Ex:
Set point
(SP)
50
7.0
1.00
100%
14.0 pH
2.00 mg/L
PB:-50%
PB:-100%
PB:50%
PB:100%
Example: When the SP
is 75% (scaling
No.0)
When the pump is stopped During setting of SP
During pump operation During setting of PB
05-45_PZiG Series(2)English 06.8.4 9:39 AM y [ W 20