Samson EB 3773 Series, Монтаж и эксплуатация

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EB 3773 EN 3-1
Design and principle of operation
3 Design and principle of
operation
The Type 3773 Limit Switch is suitable for
mounting on rotary actuators according to
VDI/VDE 3845, level 1 and level 2. It is fit -
ted with two inductive proximity switches or
two electric microswitches.
An adapter is used to connect the shaft (1) of
the limit switch to the actuator shaft. For most
applications the contacts are adjusted to is-
sue a signal when the actuator has reached
one of its end positions. Two adjustment
screws (3) are used to continuously adjust
the switching point to any position within the
angle of rotation to signalize an intermedi -
ate position.
Version with inductive proximity switches
The limit switch has adjustable metal tags (5)
on the shaft. When the tag is inside the mag-
netic field of the proximity switch (4), the
proximity switch is attenuated and the output
has a high impedance (switching function
“Contact open”). When the tag leaves the
magnetic field, the proximity switch is unat -
tenuated and the output has a low imped-
ance (switching function "Contact closed").
The tag can be adjusted to a switching point
between 0 and 100° at the adjustment screw
(3).
Version with electric microswitches
The limit switch has two adjustable cam disks
(7) on the shaft. The cam disk activates the
electric microswitch (6) over the roller on the
switch lever. The cam disks can be adjusted
to a switching point between 0 and 100° at
the adjustment screws (3).
Terminal versions
Depending on the ordering specifications,
the limit switch has screw terminals or cage
clamp terminals.
3
2
1
2
3
Fig. 3-1: Operating controls of the Type 3773
Limit Switch