Installation Procedure For Mechanic Limit Switches (Mls) - Siemens SIPART PS2 Series Operating Instructions Manual

Installing/mounting
4.5 Installing option modules
4.5.5.2

Installation procedure for Mechanic Limit Switches (MLS)

Procedure
1. Open the positioner as described in Opening the standard and intrinsically safe version
(Page 52).
2. Remove the ribbon cable from the basic electronics.
3. Tighten the two fixing screws of the basic electronics. Remove the basic electronics.
4. Insert the Mechanic Limit Switches (MLS) from the top to the upper printed circuit board
guide of the adapter.
5. Slide the Mechanic Limit Switches (MLS) in the printed circuit board of the adapter approx.
3 mm to the right.
6. Screw the special screw
shaft. Tighten the special screw
Note
Pin in the actuating disk bearing
A pin
1. Align pin
2. Rotate the actuating disk bearing
7. An insulating cover (yellow) is required over the Mechanic Limit Switches (MLS). This
insulating cover is supplied with the Mechanic Limit Switches (MLS). Place the insulating
cover on one side under the basic electronics seat of the rack. The recesses of the insulating
cover must fit in the corresponding webs of the rack. To tighten the insulating cover, bend
the walls of the adapter slightly outwards.
Firmly press the other end until the insulating cover is underneath the contact surface of the
basic electronics. The recesses of the insulating cover must fit in the corresponding webs
of the rack.
8. Place the basic electronics onto the four holders of the rack.
9. Tighten the two fixing screws of the basic electronics. Tighten the screws.
10.Reestablish all electrical connections between the basic electronics and the option modules.
11.Connect the basic electronics with the option modules and the potentiometer. Use the
corresponding ribbon cables.
12.Put on the supplied module cover. Make sure that the ribbon cable is not trapped.
Note
Module cover
Do not use the standard module cover. The provided module cover has a larger recess.
66
②
③
is pressed in the actuating disk bearing
③
with the groove of the special screw before inserting the head of the special
②
screw into the actuating disk bearing
③
pin is inserted into the groove of the special screw
through the Mechanic Limit Switches (MLS) into the positioner
②
with a torque of 2 Nm.
①
①
.
①
and the special screw
Operating Instructions, 11/2019, A5E00074631-AE
.
②
simultaneously so that the
②
.
SIPART PS2 with 4 to 20 mA/HART