Siemens SQN72 Series Manual page 6

Design
Housing
Actuator motor
Coupling
Switching point
adjustment
Position display
Connection technology
Gear
Drive shaft
Mounting and fixing
Versions for potentiometer installation
Potentiometer
installation
6/20
Smart Infrastructure

The lower housing is made of dark gray, impact-proof and heat-resistant plastic

The housing cover is made of light gray, impact-proof and heat-resistant plastic
The housing encloses:
– the synchronous motor with the disengageable reduction gear
– the camshaft of the control section
– the relays – depending on the type
– the switch section – connected to the plug-in spaces of the connection terminals via an
assembled PCB

Synchronous motor

Shaft can be disengaged from the gear and motor by manually actuating the
coupling (pressure pin (K))

Automatic reset

Via rotating cam disks

Scales adjacent to the cams indicate the angle of the switching point

Cam disks with fine adjustment, adjustable with standard screwdriver

Assignment of the cam disks to the color-coded end switches and auxiliary
switches, refer to Circuit diagrams
Internal: Scale at the beginning of the camshaft on the gear side.
Refer to Technical data.
Maintenance free.

Burnished steel

Fixed on one side on the front of the gear

Available as an actuator variant in different versions

Front of gear as bearing surface

Fastening with through holes
Some actuators are directly suitable for potentiometer installation ex works. They are
manufactured to accommodate the potentiometer and do not require any other further
parts. The chosen potentiometer must be ordered separately , refer to Accessories.
Detailed mounting instructions M7921 (4 319 9604 0) are included in the scope of
delivery of the ASZ.
CC1N7802en
8/11/2021