Workpiece 1
Workpiece 2
Workpiece 1
Workpiece 2
Workpiece n
Workpiece n
High
Vacuum
Max. A
P
_
1
n
_
1
Min. B
Atmosphere
Suction
Released
H_1
0
Applied pressure
+
±
5 % R.D.
Indicated value of pressure
Function Details
Note) When the display value fi ne
adjustment function is used,
the set pressure value may
change
±
1 digit.
B
Display value fi ne adjustment function (F6)
Indicated value at the time of shipment
Adjustable range of display
value fi ne adjustment function
C
Peak/Bottom value indication function
D
Keylock function
Prevents operation errors such as accidentally changing setting values.
This function is to display error location and content when a problem or error has occurred.
E
Zero-clear function
This function clears and resets the zero value on the display of measured pressure.
The indicated value can be adjusted within
±
7 % F.S. of the pressure when ex-factory. (ZSE20F (for compound pressure)
±
3.5 % F.S.)
A
Auto-preset function (F4)
Auto-preset function, when selected in the initial setting, calculates and stores the set value from the measured pressure. For example, if this function is
used for suction verifi cation, the optimum set value is determined automatically by repeating vacuum and break with the target workpiece several times.
The F
쏔
in ( ) shows the function code number. Refer to the Operation
Manual for details about operation procedures and function codes.
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 Verifi cation
Formula for Obtaining the Set Value
This function constantly detects and updates the maximum
(minimum) pressure when the power is supplied, and allows to hold
the maximum (minimum) pressure value.
The held value is maintained even if the power supply is cut.
When the
buttons are simultaneously pressed for 1 second
or longer, while “holding”, the held value will be reset.
P_1 or n_1
H_1
P_1=A–(A–B)/4
n_1=B+(A–B)/4
H_1=
앚
(A–B)/2
앚
F
Error indication function
Error name
Error code
Description
Action
Over current
error
Load current of 80 mA or more is applied to the switch output.
Turn the power off and remove the
cause of the over current. Then
supply the power again.
Residual
pressure error
During zero-clear operation, pressure over
±
7 % F.S. (
±
3.5 % F.S. for compound pressure)
is present. Note that the mode is returned to measurement mode automatically 1 second
later. The zero clear range varies by
±
1 % F.S. due to variation between individual products.
Perform zero-clear operation again
after restoring the applied pressure to
an atmospheric pressure condition.
Applied
pressure error
Supply pressure exceeds the maximum set pressure.
Reset applied pressure to a level
within the set pressure range.
Supply pressure is below the minimum set pressure.
System error
Internal data error
Turn off the power supply and then
turn on it again. If the failure cannot
be solved, please contact SMC for
investigation.
If the error cannot be reset after the above measures are taken, or errors other than above are displayed, please contact SMC.
13
Series
ZSE20(F)/ISE20
