Siemens SIRIUS ACT 3SU1 System Manual page 206

3SU14 modules
8.2 Mounting
Procedure
1. Insert the actuating or signaling element (A) from the front through the mounting opening
of the front plate (B).
2. Fit the holder (C) from behind onto the actuating or signaling element and lock it into
place.
3. You must align the unit before you finally tighten and secure it against twisting. You will
find information on this in Chapter "Alignment (Page 117)").
4. Turn the screw at the holder until the actuating or signaling element is fixed securely and
cannot vibrate or twist (screwdriver according to DIN ISO 8764-1-PZ1; tightening torque
1.0 ... 1.2 Nm).
5. Snap the PCB carrier (D) from behind onto the holder. To do this, hold the PCB carrier so
that it is tilted downwards slightly and place it onto the holder from behind and then press
it upwards until you feel the PCB carrier latch in the holder.
6. Equip the PCB (G) with the components.
7. Screw the PCB securely onto the PCB carrier.
Note
Number of PCB carriers
Make sure there is sufficient stability. Use several PCB carriers if necessary.
If the PCB is attached, one PCB carrier is sufficient. For an unattached PCB, at least two
PCB carriers must be used.
206
SIRIUS ACT 3SU1 pushbuttons and signaling devices
System Manual, 08/2018, A5E03457306020A/RS-AK/010