Rotational Direction Verification; Actuator Mounting; Switch Adjustment - Siemens SQM5 Series Technical Instructions

SQM5... Reversing Actuators
Rotational Direction
Verification

Actuator Mounting

POSITION SCALE
ACTUATOR POSITION
INDICATING POINTER
CAM DRUM
RELEASE BUTTON
GEAR END
Figure 6. Component Identification on the Cam Drum Side of the SQM5... Actuator.

Switch Adjustment

See Figure 6.
Siemens Building Technologies, Inc.
8. Place the second washer onto the "insert end" of the shaft. Using spreading pliers,
install the "C" clip.
Most SQM5... actuators are factory configured for counterclockwise (ccw), minimum to
maximum rotation when facing the gear end of the actuator, or clockwise (cw) rotation
when facing the other end of the actuator. SQM5.xxxxxxxR model numbers, ending with
R are factory configured for clockwise (cw) operation. To field reverse the direction of
rotation, see Service Guide, "Reversing Rotational Direction".
SQM5... actuators can be mounted in any orientation using the four 1/4"-20 UNC tapped
holes located on the bottom corners of the actuator base. Optional base mounting
brackets are available. See Table 2 - Product Numbers for Accessories. SQM5...
actuators can also be face mounted using self tapping screws in combination with the
various holes on the face of the actuator gear end.
ACTUATOR
SWITCH CAM I
SET AT MAXIMUM
SET AT ZERO ("ECONOMY")
50
10
0
30
10
30
10
0
50
0
70
SINGLE SWITCH
CAM POINTER
DOUBLE SWITCH CAM POINTER
All SQM5...actuators are factory wired with Switch I (maximum), Switch II (full closed
"economy position") and Switch III (minimum). The individual switch cams I, II, and III
are factory set to 90°, 0° and 30° respectively.
NOTE: The single switch cam pointers are used together with the black scales when
configured for counterclockwise (ccw) operation.
The double switch cam pointers are used together with the red scales when
configured for clockwise (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.
SWITCH CAM II
CAM DRUM
SWITCH CAM III
FEEDBACK POTENTIOMETER
SET AT MINIMUM
50
50
30 30
10 10
0
0
0 0
ACTUATOR POSITION
DIAL POINTER INDICATING DIAL
ASZ... (1000 Ohm)
BOARD
Technical Instructions
155-517P25
Rev. 1, July, 2000
Page 7