Position Indicating Dial Adjustment; Cover Installation - Siemens SQM5 Series Technical Instructions

SQM5... Reversing Actuators
Figure 13. Switch cam and trim
Position Indicating Dial
Adjustment

Cover Installation

Siemens Building Technologies, Inc.
Example of limit switch I and III
and trim potentiometer settings
potentiometer setting.
See Figure 6.
The actual position of the SQM5... actuator is indicated by the gray actuator position
indicating pointer. The position is also indicated by the dial pointer. Ensure that the
actuator position indicating dial is aligned with the actuator position scale by rotating the
dial in the clockwise direction if necessary.
CAUTION:
Turning the dial in the counterclockwise direction may loosen the
potentiometer locking screw.
Lift the two screws on the cover corners and slide the cover end into the groves at the
gear end of the actuator. See Figure 14.
Press the cover into place and then press the screws inward and tighten. See Figure 15.
Figure 14.
NOTE: The actual minimum and maximum
modulating range is determined either
by the setting of the MIN and MAX trim
potentiometers or the setting of Switch
Cam III (Minimum) and Switch Cam I
(Maximum). The actuator can never
modulate outside of the range set by
switch cam I and III. If the MIN and MAX
trim potentiometers are set outside the
setting range of switch cams I and III,
then the switch cam settings determine
the modulating range. If a soft stop is
desired, the modulating range can be
defined by the trim potentiometers if the
MIN and MAX trim potentiometers are
set inside the setting range of switch
0 deg.
cams I and III. See the example in
Figure 13.
Technical Instructions
155-517P25
Rev. 1, July, 2000
Figure 15.
Page 13