Document No. 129-401
Installation Instructions
January 18, 2008
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CAM DRUM
RELEASE BUTTON
GEAR END
EA0561R3
ACTUATOR
POSITION SCALE
SWITCH CAM I
SET AT MAXIMUM
SWITCH CAM II
SET AT ZERO ("ECONOMY")
SWITCH CAM III
SET AT MINIMUM
ACTUATOR POSITION
INDICATING POINTER
CAM DRUM
ASZ... (1000 Ohm)
FEEDBACK POTENTIOMETER
DIAL POINTER
ACTUATOR POSITION
INDICATING DIAL
SINGLE SWITCH
CAM POINTER
DOUBLE SWITCH CAM POINTER
Figure 3. Component Identification on the Cam Drum Side of the SQM5…Actuator.
NOTE:
The single switch cam pointers are used
together with the black scales when
configured for ccw operation.
The double switch cam pointers are used
together with the red scales when
configured for cw operation.
The individual switch cams can be adjusted by hand
or with the use of the tool attached to the outside of
the hinged switch terminal protection lid.
The adjustable range of the switches is limited by
the potentiometer range.
SQM5x.xxxRxZ
3
actuators have a 90° potentiometer
and the switches must be adjusted between 0° and
90°.
SQM5x.xxxRxZ
4
actuators have a 135°
potentiometer and the switches must be adjusted
between 0° and 135°.
Shaft Adjustment
The actuator shaft can be disengaged by pressing
the silver shaft release button. The shaft release
button is located above the grounding screw, under
the hinged terminal protection cover, and to the right
of the auto/manual switch. After pressing the shaft
release button in and slightly upward, the shaft can
be manually rotated. After the shaft has been
manually aligned to the closed position, re-engage
the shaft by pushing the shaft release button
downwards.
Cam Drum Adjustment
Once the shaft has been set to the closed position,
the cam drum must be manually aligned by pressing
and holding the black cam drum release button (see
Figure 3). Rotate the cam drum until the “0” mark on
the actuator position scale (left scale on the cam
drum) is aligned with the gray actuator position
indicating pointer.
Position Indicating Dial Adjustment
The actual position of the SQM5… actuator is
indicated by the gray actuator position indicating
pointer (see Figure 3). The position is also displayed
by the indicating dial through the housing’s window.
Ensure that the actuator position indicating dial is
aligned with the actuator position scale. If
necessary, rotate the dial in the clockwise direction.
CAUTION:
Turning the dial in the counterclockwise
direction may loosen the potentiometer
locking screw.
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Siemens Building Technologies, Inc.
