USER MANUAL
S W I T C H
Electronic
Temperature Switch
SERIES
850
All rights to these operating instructions are reserved. These operating instructions, including
extracts thereof, must not be copied or translated into other languages without our written
Safety Instructions and Warnings
Please read these instructions before installing and starting up the pressure switch. Failure to
follow the instructions will make all guarantee, warranty and compensation claims null and
connection, and the correct tools must always be used.
• Damaged devices must not be started up. If damage occurs during operation, suitable
measures must be taken to prevent persons or property from being put at risk by the damaged
• The switch must only be repaired by NOSHOK.
temperature
temperature
The accepted technical regulations and all national guidelines must always be observed and
complied with.
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NOSHOK guarantees that the pressure switch is in perfect working condition when it is delivered.
The basis consists of the technical data in the data sheet and these operating instructions.
Liability cannot be accepted for the suitability of the pressure switch.
Electrical and Mechanical Connection
The technical regulations must be complied with during installation and dismantling.
The system must be depressurized prior to installation and dismantling.
Safety regulations must be complied with, particularly when working on the electrical
system. All connections to external electrical equipment must be made in accordance with
The power to system must always be swit tch is being connected.
Temperature Switch Description
The temperature switch has one analog output and one switching output or two switching outputs. The switching output(s) is (are) adjusted using the two buttons: set point, reset point
(hysteresis), switching function (normally closed/normally open contact).
The programmable analog output is a special feature. It can be adjusted in 0.1° steps within a
span of at least 20% of the temperature range.
2
+Supply
S1
1
-Supply
2
3
4
R
L
Sig
+Supply
S1
1
-Supply
2
3
4
S2
R
1
R
2
Round Connector M 12 x 1 (4-pin)
Signal Connector Colors of
Optional Wires
Supply: + 1 brown
Supply: - 3 blue
Switch output S 1 4 black
Switch output S 2 or
2 white
analog output
Recommended accessories:
M12x1 socket with 2m cable
• straight version, order no.: FS-2-4P
• angled version, order no.: FA-2-4P
switching to p potential
1 switching output and 1 analog output 2 switching outputs
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Switching On and Off
Status-LED Switching Output
The temperature switch is switched on when the supply voltage is applied. There is no on/o
switch. A brief initialization phase occurs when the supply voltage is applied to the switch. The
display and the set point LED illuminate. The measuring range (min- and max. temperature) and
the unit are indicated briey. The outputs are inactive during this time.
After initialization the switch is in normal operating mode. The temperature appears on the display,
the switching outputs are active and the LED’s indicate the status of the switching outputs.
Programming
Briey pressing button S1 or S2 causes the relevant set point to be displayed.
The status LED’s ash for as long as the set points are being displayed.
Pressing the buttons for longer (press and hold down button until display ashes) causes the
current temperature to be taken over as the set point. The hysteresis remains unchanged. The
switching output(s) can be programmed using the control buttons independently from the present
temperature, per the programming sequence on page 6.
The programming sequence must run without interruptions. If delays of about 20 seconds or
more occur, the switch automatically exits programming mode and switches to normal mode.
All previous changes are lost.
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