Submittal Sheet

© Danfoss | DCS (rm) | 2019.12 IC.PD.P10.F9.02 | 4
Data sheet | Pressure switch and Thermostat, KP and KPI
Contact system
and application
Setting
Switch type – single pole double throw Switch action Application
1. Terminal 1 – 4 close high and open low
Terminal 1 – 2 can be used as low
pressure alarm
1. Low pressure cut-out
SPDT
2. Terminal 1 – 2 open high and close low
Terminal 1 – 4 can be used as high
pressure alarm
2. High pressure cut-out
Cut-in and cut-out pressures of the system
should always be checked with an accurate
pressure gauge.
Pressure setting for switches with automatic
reset.
1. Set the cut-in pressure on the “CUT-IN”
scale (range scale).
2. Set the differential on the “DIFF” scale.
The cut-out pressure must be above absolute
vacuum (p
e
= -1 bar).
For high pressure switches the restart pressure
is equal to cut-out pressure minus differential.
Pressure switches with manual reset
Set the cut-out presure on the “CUT-OUT”
scale (range scale).
High pressure limiters can be manually reset
when the pressure is equal to the stop pressure
minus the differential.
Note:
For low pressure switches
the restart pressure is equal
to cut-out pressure plus
differential value.
Range
Diff.