Master
Slave
(Max. 10 units)
Unit 1 Unit 2 Unit 10
DC (+)
OUT1
OUT2
FUNC
DC (–)
DC (+)
OUT1
OUT2
FUNC
DC (–)
DC (+)
OUT1
OUT2
FUNC
DC (–)
DC (+)
OUT1
OUT2
FUNC
DC (–)
Brown
Gray
(Line for copying)
Blue
Brown
Gray
(Line for copying)
Blue
Brown
Gray
(Line for copying)
Blue
Brown
Gray
(Line for copying)
Blue
Power
Slave-side sensor
Unit 1 Unit 2
Unit
n
(Max. 10 units)
ZS-38-5L (n + 1 pc.)
or
ZS-38-U
Master-side
sensor
Function Details
Note) When the precision indicator setting function is used,
set pressure value may change ±1 digit.
C
Precision indicator setting function (F6)
0
Applied pressure
+
Displayed value at the time of shipment
Adjustable range of display calibration function
±5% R.D.
Display pressure value
D
Peak and bottom display function
E
Key lock function
This function prevents incorrect operations such as accidentally
changing the set-value.
F
Zero-out function
This function clears and resets the zero value on the display of mea-
sured pressure.
For the pressure switch with analogue output, the analogue output
shifts according to the indication. A displayed value can be adjusted
within ±7% F.S. of the pressure when ex-factory (±3.5% F.S. for
ZSE30AF).
B
Auto-preset function (F5)
Auto-preset function, when selected in the setting, calculates and stores the set-value from the measured pressure.
The optimum set-value is determined automatically by repeating vacuum and break with the target workpiece several times.
Fine adjustment of the indicated value of the pressure sensor can be
made within the range of ±5% of the read value. The scattering of
the indicated value can be eliminated.
Suction Verification
Work 1 Work 2
Work 1 Work 2 Work n
Work n
High
Vacuum
Max.
A
P
-
1
n
-
1
Min.
B
Atmosphere
Suction
Released
H
-
1
P_1 (P_2) = A – (A-B)/4
n_1 (n_2) = B + (A-B)/4
P_1 or P_2 H_1 or H_2
H_1 (H_2) = (A-B)/2
Formula for Obtaining the Set-Value
A
Copy function (F97)
The settings of the master sensor can be copied to several slave sensors, which
reduces the time taken for setting and prevents the input of wrong values.
Settings can be copied to up to 10 slave sensors at once.
(Max. transmission distance: 4 m)
This function constantly detects and updates the maximum minimum
value and allows to hold the maximum/minimum pressure value.
When the buttons are simultaneously pressed for 1 second
or longer, while “holding”, the held value will be reset.
2) Force one sensor to be the master by button operation ini-
tially all sensors are set as slaves.
3) Press the button on the master sensor to start copying.
Steps to follow:
1) The sensors are connected by a dedicated lead wire
(ZS-38-5L for master and one slave or ZS-38-U for master
and up to 10 slaves). Copying is performed through a de-
dicated communication line.
Series ZSE30A
(
F
)
/ISE30A
H
Anti-chattering function (F3)
A large bore cylinder or ejector consumes a large volume of air in operation and may expe-
rience a temporary drop in the supply pressure. This function prevents detection of such
temporary drops in the supply pressure as an error.
Principle
This function averages pressure values measured during the response time set by the user and then compares the average pressure value with
the pressure set point value to output the result on the switch.
If the switch does not recover to normal even after all of the above-mentioned solutions have been applied, consult SMC for investigation.
Pressure ↑
Momentary change
t (ms) t (ms)
Time
→
Time
→
Time
→
Averaging Averaging
Switch output
operation in
normal
conditions
ON
OFF
Switch output
operation when
anti-chattering
function is on.
ON
OFF
Pressure range
P
-
1
H
-
1
Available response time settings
20 ms, 100 ms, 500 ms, 1000 ms, 2000 ms
I
Unit display switching function (F0)
Display units can be switched with this function.
Note) For the ZSE30A (vacuum pressure) and ZSE30AF (compound pressure), when
the display unit is MPa, setting and display resolutions are changed.
Display unit
Min. unit setting
0.1
kPa
0.001
MPa
Note)
PA
0.001
kgf/cm
2
GF
0.001
bar
bAr
0.01
psi
PSi
0.1
inHg
inH
1
0.1 0.001 0.001 0.001 0.01 0.1 1
1 0.001 0.01 0.01 0.1
mmHg
mmH
ZSE30A
(Vacuum pressure)
ZSE30AF
(Compound pressure)
ISE30A
(Positive pressure)
G
Error indication function
Condition
Error code
(LCD display)
Error description
Overcurrent
error
Residual
pressure error
Applied
pressure error
System error
Solution
Load current of switch output (OUT1) exceeds 80 mA.
Shut off the power supply. After eliminating the out-
put factor that caused the excess current, turn the
power supply back on.
Reduce/increase supply pressure to within the re-
gulating pressure range.
Bring the pressure back to atmospheric pressure
and try using the zero-out function.
Load current of switch output (OUT2) exceeds 80 mA.
Supply pressure exceeds the maximum regulating pressure.
Supply pressure is below the minimum regulating pressure.
Internal data error
A pressure of ±7% F.S. of atmospheric pressure is applied in the
zero-out function (±3.5% F.S. or more for ZSE30AF). however,
the switch will automatically return to measuring mode in 1 se-
cond. Due to individual product differences, the setting range of
the zero-out function varies within ±1% F.S.
Shut off the power supply and turn the power
supply back on. If the power does not come back
on, please contact SMC for an inspection.
J
Power-saving mode (F7)
It shifts to the power-saving mode without button operation for 30
seconds. It is set to the normal mode (power-saving mode is
OFF) when ex-factory (decimal points and operation indicator
light, only when the switch output is turned ON, blink in the po-
wer-saving mode.
K
Secret code setting (F8)
It can be set whether code number input is required or not when
key is locked. It is set to input no code number when ex-factory.
F in brackets stand for the function codes. Refer to the operating
manual for how to operate and function codes in detail.
Series ZSE30A
(
F
)
/ISE30A
2-Colour Display
High-Precision Digital Pressure Switch
11
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