CM2N4625E / 02.1999
Siemens Building Technologies
6/10
Landis & Staefa Division
All information and steps to properly prepare and mount the actuator are listed in the
Mounting Instruction guide M4626 delivered with the actuator. The shaft adapter as well
as all other individual parts are not pre-mounted as the actuator components are put
together differently depending the damper shaft length. Refer to "Mechanical design" in
this data sheet.
Select the mounting position so that you can easily access the cables as well as the
setting dials on the front of the actuator. Refer to "Dimensions".
In order to satisfy the requirements as per IP54, the following mounting conditions must
be fulfilled:
•
Mount the actuators only vertically (cabling see below) for air dampers with horizontal
shafts.
•
When the actuator is mounted directly on the damper shaft, the mounting angle my be
a maximum of +/- 45 °.
•
Use the ASK75.1 weather shield for mounting in any other position.
If you mount the actuator directly on the damper shaft, the mounting bracket must be
used. The insertion depth for the shaft into the housing must be sufficient and
guaranteed.
Information on minimum length and diameter for the damper shaft is listed in "Technical
data".
The actuator comes with a factory setting of + 2,5° which ensures a tight close-off for
the air dampers.
To ensure a tight close-off function for the dampers and the exact switching position for
switches A and B, the actuator can only be adjusted with a mounted shaft adapter and
position indicator in accordance with the mounting instructions.
If necessary, you can limit the rotational angle in increments of 5° for the entire span by
positioning the shaft adapter in the respective position.
The mounting sets which are used to change the rotational movement into a linear
stroke as described in "Type summary" are mounted separately.
All information necessary for commissioning is contained in the following:
•
This data sheet 4625
•
Mounting instructions M4626
•
Job diagram
Check to ensure that all permissible values as contained in "Technical data" are
observed.
•
Check for proper mounting and to ensure that all mechanical settings are in
accordance with the plant-specific requirements. Additionally, ensure that the
dampers are shut tight when in the closed position.
•
Fasten the actuator securely to avoid side load.
•
Check the rotation direction: The dampers must be able to be moved by pushing the
button "PUSH”.
•
Check to ensure that the cables are connected in accordance with the plant wiring
diagram (see "Diagrams").
•
The operating voltage AC 24 V (SELV/PELV) or AC 230 V must be within the
tolerance values.
Mounting notes
Mounting instructions
Mounting position
Housing protection
Mounting bracket
Damper shafts
Actuator factory setting
Manual adjustment
Mechanical limitation of
the rotational angle
Using the mounting sets
Commissioning
notes
References
Environmental conditions
Mechanical check
Electrical check
