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PROGRAMMING PROCEDURE
1. OUTPUT MODES
Hysteresis mode:
Adjustment of switch point H and hysteresis range h.
Ex.: H = 6 bar - h = 0.5 bar
N.O. (Normally Open)
OFF
ON
OFF
H
h
0
OFF
ON
OFF
0
At 0 bar, the output signal is turned "OFF". Whenever
pressure crosses above the switch point, the output si-
gnal is turned "ON". As long as the pressure is above 5.5
bar (= 6 bar – 0,5 bar), the output signal remains "ON".
Whenever pressure decreases and crosses below
5.5 bar, the output signal is turned "OFF". In the N.C.
(Normally Closed) as opposed to the N.O. (Normally
Open) configuration, ON becomes OFF and vice-versa.
Factory setting: outputs 1 & 2 in the hysteresis mode.
psi
kgf/cm²
H - 1
71
5.00
h - 1
14
1.00
H - 2
99
7.00
h - 2
14
1.00
Window comparator mode:
Adjustment of lower limit A and upper limit b.
Ex.: A = 4 bar - b = 6 bar
N.O. (Normally Open)
OFF
b
ON
ON
A
OFF
0
0
At 0 bar, the output signal is turned "OFF". Whenever
pressure crosses above the lower limit, the output signal
is turned "ON". As long as the pressure level remains
within the upper and lower limits of the window, the out-
put signal remains "ON". Whenever the pressure crosses
above the upper limit, the output signal is turned "OFF".
In the N.C. (Normally Closed) as opposed to the N.O.
(Normally Open) configuration, ON becomes OFF and
vice-versa.
Factory setting:
psi
kgf/cm²
A - 1
42
3.00
b- 1
71
5.00
A - 2
85
6.00
b - 2
113
8.00
2. FRONT PANEL
LED 1
Mode
--
Display : Values previously set in setting mode
Pressure level in measurement mode
Mode : Key to select the different modes
Up & Down : Keys to change settings
Output LED : Indication of output status
Output 1 ON = red, Output 2 ON = green.
3. ELECTRICAL CONNECTION
- Outputs: N.C. or N.O. at choice, max. 125 mA
- pin 1 = V+ = 10.8 to 30 VDC
- pin 2 = output 2
- pin 3 = V--
- pin 4 = output 1
Display sequence when power is switched on.
Type
Selected
unit of
measure
E S D
ELECTRONIC PRESSURE SWITCH WITH DIGITAL DISPLAY
Hysteresis and comparator functions
4. CONFIGURATION OF N.O. / N.C. OUTPUTS AND
UNIT OF MEASURE
Factory setting:
PNP
ON
To store the settings in the integrated EEPROM, press
the "mode" and the "arrow up" keys simultaneously.
ON
1x
MPa
bar
0.49
4.9
0.10
1.0
0.68
6.8
0.10
1.0
1x
ON
1x
5. ZERO-POINT ADJUSTMENT
To reset to zero without connecting to pressure supply.
Pressure
display
6. LOCKOUT
Press the "mode" and "arrow down" keys simultaneously
to lock the pressure switch to prevent unwanted chan-
MPa
bar
ges to the adjustments. Repeat the above procedure to
0.29
2.9
unlock the pressure switch and change the settings.
0.49
4.9
7. SETTING MODE
0.59
5.9
Initial settings: Output 1 & 2 = Normally Open
0.78
7.8
Desired setting for output 1 : Hysteresis mode;
LED 2
■ Selection of mode for output 1:
+
Pressure
display
1x
Display of
measured
pressure
OBSERVE PRECAUTIONS FOR HANDLING ELECTROSTATIC SENSITIVE DEVICES
Installation and operation
Unit
Output 1
Output 2
bar
HYS, N.O.
HYS, N.O.
Select N.O. or N.C. for output 1
Select N.O. or N.C. for output 2
psi
bar
MPa
kgf/cm²
Select desired unit of measure
Pressure
display
Hold for
Pressure
min. 3 sec
display
Unit of measure: bar
switching at 6 bar;
hysteresis 0.5 bar.
2x
Select hysteresis or
window comparator mode
(e.g. hysteresis)
CAUTION
■ Setting of values for output 1:
Display
1x
1x
1x
■ Selection of mode for output 2:
Desired setting for output 2 : Window comparator mode;
Display
4x
1x
■ Setting of values for output 2:
Display
3x
1x
1x
8. DISPLAY OF PEAK VALUE AND BOTTOM VALUE
The highest (max.) and lowest (min.) pressure values
measured from the time the outputs are connected to
power supply are stored in the integrated memory. The
values are displayed as follows:
Display
1x
Display
1x
9. ERROR MESSAGES
Error
Message
Pressure during zero-
point adjustment
exceeds ±3% F.S.
Pressure
Overcurrent at output 1
display
Overcurrent at output 2
Applied pressure is
above calibrated
pressure range.
Select switch point for output 1
with "up" or "down" arrow keys
Select hysteresis for output 1
with "up" or "down" arrow keys
Pressure
display
switching in 4 to 6 bar range
(lower limit A = 4, upper limit b = 6)
Select hysteresis or
window comparator mode
(e.g. window comparator)
Pressure
display
Select lower limit for output 2
with "up" or "down" arrow keys
(e.g.: 4 bar)
Select upper limit for output 2
with "up" or "down" arrow keys
(e.g.: 6 bar)
Pressure
display
Higest measured
Pressure
pressure (e.g.: 7 bar)
display
Lowest measured
Pressure
pressure (e.g.: 2 bar)
display
Troubleshooting
Readjust the zero
point in a different
pressure environment
Keep the current
below 125 mA at
maximum.
Check cabling.
Apply pressure
within the calibrated
pressure range.
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