Wieland SMS 3 Série Mode D'emploi page 9

Actuator
Secure the actuator form-fit. It must not be possible to dismantle the
actuator with simple tools.
The SMS 9002 and 9003 actuators are mounted with two M5
screws in accordance with DIN 912.
M4 × 8 screws with one-way head are to be used to mount the
SMS 9001 and 9004 actuators and prevent tampering.
When mounting, the switch and the actuator are to be aligned in
such a way as to ensure no transverse forces act on the actuating
head even after several opening/closing operations. The minimum
radii apply to a pivot point on the level of the upper edge of the
enclosure S0. Radius actuation (see Page 8) may reduce the me-
chanical service life. The switch can be fitted in any position that
enables the switch to be inspected and, if necessary, exchanged by
authorised technical personnel. The installation position should be
selected such that no foreign particles can enter the opening of the
actuating device.
Close off the unused cap slot with the snap-in insert.
A T T E NT I ON
After mounting, the cap must be fitted on to the actuator.
The cap prevents the actuator from being dismantled and
also prevents the safety facility moving over the switching
device in the event of poorly fitted mechanical limit stops.
7 Circuit symbols and circuit diagrams
SMS xx40
On
Off
Doc. # BA000777 – 05/2017 (Rev. C)
SMS xx70
Actuator inserted
Actuator withdrawn
SMS 3xxx/ SMS 4xxx
Press-out blank
At least one of the three press-out blanks must be removed in order
to feed in a cable.
Screw in the required screw connection (SMS 4xxx = M20 × 1.5,
SMS 3... = M16 × 1.5). In so doing the press-out blank is separated
and pressed into the enclosure. Open the cover with a screwdriver
(see Fig. below). Remove the press-out blank. It must not be left in
the enclosure (see Fig. below).
The position switches must not be used as a mechanical stop.
The switch is opened by releasing the cover with a screwdriver (see
illustration below).
The electrical contacts of the contact elements SMS xx10 have two
M3.5 screw connections. Tightening torque M = 0.8 Nm.
The electrical contacts of the contact elements SMS xx20 and
SMS xx40 have four M3.5 screw connections.
Tightening torque M = 0.8 Nm.
The electrical contacts of the contact element SMS xx70 have six
M3 screw connections. Tightening torque M = 0.6 Nm.
See "Circuit Symbols and Circuit Diagram" for contact assignments.
The connection requires a stranded wire with ferrule or a solid wire
with a cross section of 0.5–1.5 mm
As a safety switch in accordance with EN 60204, the NC contacts
are to be used.
SMS xx10
Tolerance:
Switching point ± 0,25mm
Switching force: Switching force ± 10%
2 .
SMS xx20
EN 9