CP ositive opening travel:
minimum travel the switch actuator, from the
free position, ensure positive opening opera
tion the normally closed contact (N.
PR Release position:
position the itch ctu ato when the
contacts return their initial free position.
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1SBC141157C0202
.
C Pre-travel (average travel):
distance between the free position and
the operating position PA.).
C3 iffe tia tra 1-C (average
travel):
travel difference the switch actuator between
the operating position PAand the release posi
tion PR. travel position L.
CL ax.Limit Switches Plastic Metal Casing
Travel and Operation Diagrams
PO Free position:
position the switch actuator when exter
nal force exerted it.C. travel (maximum travel):
distance between the free position POand the
max.
PA perating position:
position the switch actuator, under the effect
of force F1, when the contacts leave their initial
free position.
C2 ver-travel (average travel):
distance between the operating position PAand
the max.
Note: for slow action contacts, 1-1 pre-travel contact 21-22, 1-2 pre-travel contact 13-14.
PP Positive opening position:
position the switch actuator from which
positive opening ensured.
L Max.
C4 Release travel (average travel):
distance between the release position PRand
the free position PO. travel position L. travel position:
maximum acceptable travel position the
switch actuator under the effect force F1
