Document No. 129-399
Installation Instructions
January 18, 2008
Page 2 of 4
Siemens Building Technologies, Inc.
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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.
SQM5x.xxxRxA actuators without
potentiometer must be adjusted only
between 0° and 160°.
If a potentiometer is installed, the
adjustable range of the switches depends
on the range of the potentiometer.
SQM5x.xxxRxA
3
actuators have a 90°
potentiometer and the switches must be
adjusted between 0° and 90°.
SQM5x.xxxRxA
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 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, 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.
