Retrofitting An Inductive Limit Switch - Samson 3730 Series Mounting And Operating Instructions

Adjusting the limit switch
For CLOSED position:
1. Initialize positioner.
2. Use the MAN function to move the
positioner to 5 % (see LC display).
3. Adjust the tag using the yellow adjust-
ment screw (2) until the tag enters or
leaves the field and the switching ampli-
fier responds. You can measure the
switching voltage as an indicator.
Contact function:
Tag leaving the field > contact is made.
Tag entering the field > contact is opened.
For OPEN position:
1. Initialize positioner.
2. Use the MAN function to move the
positioner to 95 % (see LC display).
3. Adjust the tag (1) using the yellow ad-
justment screw (2) until the tag enters or
leaves the field of the proximity switch
(3).
You can measure the switching voltage
as an indicator.
Contact function:
Tag leaving the field > Contact is made.
Tag entering the field > Contact is opened.
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EB 8384-4 EN
9.1 Retrofitting an inductive limit
switch
Required retrofit kit:
Limit switch Order no. 1400-7460
Note: The same requirements apply to retro-
fitting an inductive limit switch as to servic-
ing the positioner. For explosion-protected
devices, the requirements in section 11 need
to be kept.
Check the "Limit switch, inductive" box on
the nameplate after retrofitting the limit
switch.
1. Take off the rotary pushbutton (3) and
cap (1), unthread the five fixing screws
(2) and lift off the plastic cover (9) to-
gether with the display, taking care not
to damage the ribbon cable (between
PCB and display).
2. Use a knife to cut an opening at the
marked location (4).
3. Push the connector (11) with cable
through the opening and secure the
proximity switch (7) on the cover with a
dot of glue.
4. Remove the jumper (8801-2267) at the
socket X7 of the top board and insert the
cable connector (11).
5. Guide the cable in such a manner that
the plastic cover can be placed back
onto the positioner. Insert the fixing
screws (2) and screw tight. Attach the
clamping plate (8) onto the proximity
switch.
6. Attach the rotary switch (5). Make sure
the flattened side of the positioner shaft