Siemens SIRIUS ACT 3SU1 System Manual page 110

3SU10 pushbuttons and indicator lights
5.3 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 (wiring side) onto the actuating or signaling element and
lock it into place.
3. The unit must be aligned before it is finally tightened and secured against twisting (see
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 contact module(s) (D) from behind onto the holder. To do this, hold the modules
so that they are tilted downwards slightly and place them onto the holder from behind and
then press them upwards until you feel the module latch in the holder.
Single- or two-pole contact modules can be mounted on the holder.
The modules can be stacked (max. 2 modules behind one another).
6. Mount an LED module (E), if necessary. You can mount the LED module on the holder
only in position 3/6 (center position).
110
SIRIUS ACT 3SU1 pushbuttons and signaling devices
System Manual, 08/2018, A5E03457306020A/RS-AK/010