3
T 335 AS
T 336 AS
Operating instructions
Position switch with safety function
EN
3. Mounting
3.1 General mounting instructions
The mounting dimensions are mentioned at the rear of the enclosure
The fixing screws must be protected against unauthorised tampering
The enclosure must not be used as an end stop Any mounting position
To ensure a proper functioning, the switch must be installed so that
the required switch travel is obtained For safety functions, at least the
positive break travel indicated in the switch travel diagram (refer to
catalogue) must be obtained All components have sufficient after-
travel to compensate for inaccuracies in the guidance of the actuating
system The actuation of the switch beyond its end stop however must
be avoided
Please observe the remarks of the standards EN ISO 12100,
EN 953 and EN 1088
3.2 Dimensions
All measurements in mm
T.. 335 AS
9.5
Ø
5.3
60
66.5
7.3
30
16.5
76
M12x1
20
30
30.5
17
38
23
24
22
24
FK
T.. 336 AS
9.5
Ø
5.3
60
66.5
30
7.3
M12x1
40.5
16.5
76
30.5
15.5
17
38
24
23
FK
24
Actuator heads T.. 335 / 336 AS
Selection and dimensions refer to SCHMERSAL Main catalogue "Safety
Technology"
3.3 Changing the switching function (4VH, 4V7H, 4V10H)
Position switches with "4V" actuating head can be set so that they
are switched either only clockwise, only counterclockwise or in both
directions The following steps are required:
1 Unscrew the screws and remove the actuating head
2 Change the position of both inner plastic parts
3 Put back the actuating head and tighten the screws
Switching in both directions
Switching only clockwise
Switching only counterclockwise
3.4 Mounting of the actuating heads
Repositioning the actuating head (R, 1K, 3K, V, 4V.H)
The actuating head can be repositioned by 4 x 90°. Unscrew the screws
of the actuating head Reposition the actuating head in the desired
position and retighten the four screws
Repositioning the roller lever (H)
The (offset) roller arm may be reversed, so that the roller faces the
inside of the arm
