Datasheet

Function Details
A
Auto-shift function (F4)
C
Precision indicator setting function (F7)
0
Applied pressure
+
Displayed value at the time of shipment
Adjustable range of display calibration function
±5% R.D.
Display pressure value
Supply pressure
normal
P
-
1
(P
-
3)
ON
OFF
Hi
Lo
Auto-shift
input
H
-
1
(H
-
2)
A
Supply pressure
drop
B
Supply pressure
increase
Switch output
response time
when auto-
shift is input.
When there are large fluctuations in the supply pressure, the switch
may fail to operate correctly. The auto-shift function compensates
such supply pressure fluctuations. It measures the pressure at the
time of auto-shift signal input and uses it as the reference pressure
to correct the set-value on the switch.
∗ Rectified value
When the auto-shift is selected, “ooo” will be displayed for approxi-
mately 1 second, and the pressure value at that point will be saved
as a rectified value “C_5”. Based on the saved rectified values, the
set-value
Note)
of “P_1”, “H_1”, “P_2”, and “H_2” will likewise be recti-
fied.
Note) When an output is reversed, “n_1”, “H_1”, “n_2”, “H_2” will be
rectified.
Auto-shift zero
The basic function of auto-shift zero is the same as the function for
auto-shift. Also, it corrects values on the display, based on a pres-
sure value of 0, when the auto-shift is selected.
D
Peak and bottom display function
E
Key lock function
This function prevents incorrect operations such as accidentally chang-
ing the set-value.
F
Zero-out function
This function clears and resets the zero value on the display of
measured pressure.
For the pressure switch with analog output, the analog output shifts
according to the indication. A displayed value can be adjusted within
±10% F.S. of the pressure when ex-factory.
B
Auto-preset function (F8)
Auto-preset function, when selected in the initial setting, calculates
and stores the set-value from the measured pressure.
The optimum set-value is determined automatically by repeating va-
cuum and break with the target workpiece several times.
Fine adjustment of the indicated value can be made within the range
of ±5% of the read value. The scattering of the indicated value can
be eliminated.
Note) When the precision indicator setting function is used, the set pres-
sure value may change ±1 digit.
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
Set-value correction by auto-shift function
H
-
1
5 ms or more 10 ms or less
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
This function constantly detects and updates the maximum (mini-
mum) value and allows to hold the maximum (minimum) pressure
value.
When the buttons are simultaneously pressed for 1 second or
longer, while “holding”, the hold value will be reset.
F in brackets stand for the function codes. Refer to the operating
manual for how to operate and function codes in detail.
Compound pressure
Vacuum pressure
Positive pressure
Regulating pressure range
–110.0 to 110.0 kPa
10.0 to –111.0 kPa
–0.105 to 1.100 MPa
–0.105 to 2.20 MPa
Possible set range
Possible Set Range for Auto-Shift Input
–220 to 220 kPa
121.0 to –121.0 kPa
–1.205 to 1.205 MPa
–2.31 to 2.31 MPa
(Differential)
Pressure
Rectified
value∗
Rectified value∗
Switch
output
1·(2)
741
Series ZSE80/ISE80
2-Color Display Digital Pressure Switch
For General Fluids
ZSP
PS
ISA
PSE
IS
ISG
ZSM
ZSE
ISE
P0694-P0755-E.qxd 08.8.27 6:29 PM Page 741