Agromatic ESR-NK Series, Installation And Operating Manual, Page: 49 / 98

5 Assembly 5.4 Setting the position switches
Actuators NK and VK, Position Controller ESR-NK 43
5.4.1 Control cam shapes and switches
In addition to the 330° standard cam (see Fig. 5.14) other control cam shapes
are available on request, e.g. the 180° cam (see Fig. 5.15).
Fig. 5.14: 330° cam (left-hand: switch not activated, right-hand: switch activated)
Fig. 5.15: 180° cam (left-hand: switch not activated, right-hand: switch activated)
The switches are equipped with a changeover contact.
Switch activated:
make contact (NO) closed,
break contact (NC) open
Switch not activated: make contact (NO) open,
break contact (NC) closed
The control cams described below are always used for actuating the position
switches that are dependent on the rotational angle.