Siemens SQM50.484R8A Owner's manual

SQM5…
Technical Instructions
Document No. 155-517P25
Jan 25, 2022
Reversing Actuators
Siemens Building Technologies, Inc.
Description
SQM5... reversing actuators are used for the positioning of flow control valves, butterfly
valves, dampers, or any application requiring rotary motion. The SQM5… actuators
accommodate control input signals of 4 to 20 mA, 0 to 135 , 0 to 10 Vdc, 0 to 20 mA,
position proportional and floating control. The available output signals include
4 to 20 mA, 0 to 135 , 0 to 10 Vdc, 0 to 20 mA, and 0 to 1000 . SQM5… actuators
are available with up to six internal, easily adjustable switches.
A selection of exchangeable circuit boards provide a variety of functions including
auto/manual selector switch, manual forward/reverse toggle switch, zero and span
adjustment, parallel or master/slave operation, split range control, input signal override,
and selectable electronic linearization.
The SQM5… is engineered for precision. It is particularly well suited for applications
requiring a high degree of modulating accuracy and repeatability.
The SQM5… actuator may be mounted in any position. A selection of mounting
brackets and shafts provides installation flexibility and allows for the simple replacement
of most competitive actuators.
Features
•Two limit switches, plus up to four internal auxiliary switches
•Fully closed “economy position”switch
•Drive shaft and cam drum disengagement clutches
•Auto/manual switch, manual control forward/reverse toggle switch
•UL, CSA approved 24 and 110 Vac versions
•CE approved 220 Vac versions
•Field reversible clockwise (cw) or counterclockwise (ccw) operation
•Various torque ratings and running times available
•Selection of field exchangeable single-ended and dual-ended shafts
•Mounting brackets to replace competitive actuators

Technical Instructions SQM5… Reversing Actuators
Document No. 155-517P25
Jan 25, 2022
Page 2 Siemens Building Technologies, Inc.
Features, Continued
•Connections for both base and face mounting
•Low hysteresis actuator and potentiometer gearing
•Externally visible position indication
•Selection of input and output signals
•Zero and span adjustment
•Field exchangeable circuit boards and potentiometers
•Electronic damper linearization function
•Split range and selectable parallel or master/slave operation
•Adjustable input signal override function
Application
SQM5… actuators are uniquely suited for both industrial and commercial
applications. The high level of accuracy permits precise modulating control of
industrial process and process heating applications, often significantly enhancing
performance and product quality.
In commercial and industrial burner applications requiring high turndown and
reliable ignition, the auxiliary switches can be applied to create separate positions
for burner ignition and low fire. In dual fuel applications, additional switches can be
used to create separate high fire, low fire and ignition positions for each fuel. The
economy position switch is used to drive the actuator to the full closed position
when the burner is off.
In all applications, commissioning is simplified. Shaft and cam drum disengagement
clutches allow for the quick manual alignment of the actuator shaft and switch
cams. The forward/reverse toggle switch in combination with the auto/manual
selector switch provides direct manual control.

SQM5… Reversing Actuators Technical Instructions
Document No. 155-517P25
Jan 25, 2022
Siemens Building Technologies, Inc. Page 3
Table Of Contents
Application Page 2
Product Numbers
Table 1. Product numbers for pre-assembled UL/CSA/CE-approved
actuators Page 4
Table 2. Product numbers for accessories Page 5
SQM5… Product Number Identification Legend Page 6
Installation and Operating Instructions
Shaft Installation Page 7
Rotational Direction Verification Page 8
Actuator Mounting Page 8
Switch Adjustment Page 8
Shaft Adjustment Page 9
Cam Drum Adjustment Page 9
Wiring
Electrical Connection Page 9
Grounding Page 9
Wiring Connections
AGA56.1… circuit boards Page 10
AGA56.41/42/43… circuit boards Page 11
AGA56.9… circuit boards Page 13
Commissioning
Modulation Adjustment Page 15
Zero Adjustment Page 15
Span Adjustment Page 15
Cover Installation Page 16
Features
SQM5x.xxxxxZx actuators Page 16
SQM5x.xxxxxGx actuators Page 18
SQM5x.xxxxxHx actuators Page 18
SQM5x.xxxxxKx actuators Page 18
SQM5x.xxxxxAx actuators Page 18
Service Guide
Reversing Rotational Direction Page 18
Shaft Installation Page 20
Circuit Board Installation Page 20
AGA56.41/42/43… Page 20
AGA56.9A Page 22
AGA56.1A97 Page 24
Potentiometer Removal/Installation Page 25
Specification Data Page 26
Dimensions Page 29

Technical Instructions SQM5… Reversing Actuators
Document No. 155-517P25
Jan 25, 2022
Page 4 Siemens Building Technologies, Inc.
Product Numbers
Table 1. Product Numbers for Pre-assembled Actuators.
Line
Voltage
4-20 mA
0-135 W
0-10 Vdc
110 V 220 V 24 V
90 8ccw x x SQM50.261R1G3
90 8cw x x SQM50.261R1G3R
90 8ccw x x x x SQM50.261R1Z3
90 8ccw x SQM50.264R1A SQM50.264R2A
90 8cw x SQM50.264R1A0R
90 8ccw x SQM50.264R1A3
90 8cw x x SQM50.264R1G3R
90 8ccw x x SQM50.264R1G4 SQM50.264R2G4
90 8ccw x x x x SQM50.264R1Z3
140 12 ccw x x SQM50.361R1G3
140 12 cw x x SQM50.361R1G3R
140 12 ccw x x SQM50.361R1G7
140 12 ccw x x x x SQM50.361R1Z3
140 12 ccw x x SQM50.364R1G3
140 12 cw x x SQM50.364R1G3R
140 12 cw x x SQM50.364R1G4R
140 12 ccw x x x x SQM50.364R1Z3
140 25 ccw x SQM50.461R1A
140 25 ccw x SQM50.461R1A3
140 25 ccw x x SQM50.461R1G3
140 25 cw x x SQM50.461R1G3R
140 25 ccw x x SQM50.461R1H3
140 25 ccw x x x x SQM50.461R1Z3
140 25 ccw x x x x SQM50.461R1Z7
140 25 ccw x SQM50.464R1A SQM50.484R8A
140 25 cw x SQM50.464R1A0R
140 25 ccw x SQM50.464R1A3
140 25 cw x SQM50.464R1A3R
140 25 ccw x x SQM50.464R1G3 SQM50.464R2G3 SQM50.484R8G3
140 25 ccw x x SQM50.464R1G4
140 25 cw x x SQM50.464R1G3R SQM50.464R2G3R
140 25 ccw x x SQM50.464R1G7
140 25 cw x x SQM50.464R1G7R
140 25 ccw x x SQM50.464R1H3 SQM50.484R8H3
140 25 cw x x SQM50.464R1H3R
140 25 ccw x x x x SQM50.464R1Z3 SQM50.464R2Z3 SQM50.484R8Z3
140 25 cw x x x x SQM50.464R1Z3R
140 25 cw x x x x SQM50.467R1Z3R
200 25 ccw x x x x SQM53.461R1Z3
200 25 ccw x SQM53.464R1A
200 25 ccw x SQM53.464R1A3
200 25 ccw x x SQM53.464R1G3
200 25 ccw x x SQM53.464R1G7
200 25 cw x x SQM53.464R1G7R
200 25 ccw x x x x SQM53.464R1Z3 SQM53.464R2Z3
200 25 ccw x x x x SQM53.467R1Z3
200 25 cw x x x x SQM53.467R1Z3R
200 25 ccw x SQM53.467R2A3
310 37 ccw x SQM56.564R1A
310 37 ccw x x SQM56.564R1G4
310 37 ccw x x SQM56.564R1G7
310 37 ccw x x SQM56.564R1H4
310 37 ccw x x x x SQM56.564R1Z3
Product Number
Torque1
[lb-in]
Running
Time 2
90°@ 60
Hzsec
Rotation
Direction
Input Control Signals3

SQM5… Reversing Actuators Technical Instructions
Document No. 155-517P25
Jan 25, 2022
Siemens Building Technologies, Inc. Page 5
Product Numbers
Table 1. Product Numbers for Pre-assembled Actuators, Continued.
Line
Voltage
4-20 mA
0-135 W
0-10
Vdc
110 V 220 V 24 V
400 50 ccw x x SQM56.664R1G3
400 50 cw x x SQM56.664R1G3R SQM56.664R2G3R
400 50 ccw x x SQM56.664R1H3
400 50 cw x x SQM56.664R1H3R
400 50 ccw x x x x SQM56.664R1Z3
400 50 cw x x x x SQM56.664R1Z3R
400 50 cw x SQM56.667R1A3R
400 50 ccw x x SQM56.667R1G3
400 50 cw x x SQM56.667R1G7R
400 50 ccw x x x x SQM56.667R1Z3
Torque1
[lb-in]
Running
Time 2
90°@ 60
Hzsec
Rotation
Direction
Input Control Signals3
Product Number
1. Torque will vary with the selection of the shaft. See Specifications.
2. Running time for 135° →multiply by 1.5. For 50 Hz →multiply by 1.2
3. SQM5x.xxxxxZx models also accept a 0 to 20 mA input signal.
Table 1 above lists the most common configurations of SQM5… series actuators. Many other configurations are
possible. See Product Number Identification Legend on the following page or contact SCC Inc. to inquire about
configurations not listed in Table 1.
Table 2. Product Numbers for Accessories.
Electronic Circuit Boards
AGA56.1A97 24-250 Vac (A) board for SQM5x.xxxxxAx
AGA56.9A87 24 Vac (Z) board for SQM5x.xxxxxZx
AGA56.9A17 110 Vac (Z) board for SQM5x.xxxxxZx
AGA56.9A27 220 Vac (Z) board for SQM5x.xxxxxZx
AGA56.41A87 24 Vac (G) board for SQM5x.xxxxxGx
AGA56.41A17 110 Vac (G) board for SQM5x.xxxxxGx
AGA56.41A27 220 Vac (G) board for SQM5x.xxxxxGx
AGA56.42A87 24 Vac (H) board for SQM5x.xxxxxHx
AGA56.42A17 110 Vac (H) board for SQM5x.xxxxxHx
AGA56.42A27 220 Vac (H) board for SQM5x.xxxxxHx
AGA56.43A87 24 Vac (K) board for SQM5x.xxxxxKx
AGA56.43A17 110 Vac (K) board for SQM5x.xxxxxKx
AGA56.43A27 220 Vac (K) board for SQM5x.xxxxxKx
See Figure 1. Product Number Identification Legend.
Mounting Brackets & Adapters
AGA57.3 for replacement of Honeywell MOD III, IV
actuators
AGA57.4 for replacement of Honeywell M640/740/940 and
Barber Colman EA20/40/50/60 actuators. Directly
adaptable to Eclipse butterfly valves.
ASK33.9 mounting kit for direct attachment to Siemens
VKF41... butterfly valve. (Shaft AGA58.1 required)
Shafts
AGA58.1 10 mm round with key. Gear end only.
AGA58.2 12 mm round with key. Gear end only.
AGA58.3 9 mm square. Dual-ended.
AGA58.4 3/8 inch square. Dual-ended.
AGA58.5 10mm D-shaped. Gear end only.
AGA58.7 14 mm round with key. Gear end only.
For exact shaft sizes, see Dimensions.
Shaft Seals
AGA55.5 NEMA shaft seal kit. (Shaft AGA58.4 required)
Potentiometers
ASZ12.803 and ASZ12.30 1000, 90°
ASZ12.833 and ASZ12.33 1000, 135°
ASZ22.803 and ASZ22.30 1000/1000double
potentiometer, 90°
ASZ22.833 and ASZ22.33 1000/1000double
potentiometer, 135°
ASZ16.703 135, 90° (wire wound)
ASZ16.733 135, 135° (wire wound)
ASZ66.733 135/135, double potentiometer 135° (wire
wound)
Additional potentiometer models available. See Siemens
technical data sheet 7921.

Technical Instructions SQM5… Reversing Actuators
Document No. 155-517P25
Jan 25, 2022
Page 6 Siemens Building Technologies, Inc.
Product Number Identification Legend
For actuator identification only. To select product numbers for ordering, see Table 1.
Figure 1. SQM5… Product Number Identification Legend.
.
Actuator family
Torque in-lb @ 60 (50) Hz.
090 for 8 (10) sec. running time
0140 for 12 (15), 25 (30), 37 (45) sec.
3200 for 25 (30) sec.
6310 for 37 (45) sec.
6
400 for 50 (60), 75 (90) sec.
Running time for 90°
Not all actuator running times are
available in each torque.
Refer to table 1
60 Hz. 50 Hz.
28 sec. 210 sec.
312 sec. 315 sec.
425 sec. 430 sec.
537 sec. 545 sec.
650 sec. 660 sec.
Number of SPDT switches
62 limit and 4 auxiliary switches
Shaft selection
0
no shaft (shaft must be ordered separately)
1round 10 mm, single ended
4square 3/8 inch, dual ended
5D-shaped 10mm, single ended
7round 14 mm, single ended
Approvals
RUL recognized, CSA certified
Operating voltage (Vac @ 50-60 Hz)
1110-120 Vac
2220-240 Vac
824 Vac
Internal circuit board (SQM5x.xxxxx G, H, K, Zx actuators require potentiometer ASZ…)
AAGA56.1A97 (position proportional control)
GAGA56.41A... (4 to 20 mA input)
HAGA56.42A... (0 to 135 Ohminput)
KAGA56.43A... (0 to 10 Vdc input)
ZAGA56.9... (all inputs/outputs, linearization, split ranging, override, and pre-set positioning)
Potentiometer
(1000 Ohmrequired when using SQM5x.xxxxx G, H, K, Zx actuators)
3ASZ12.30 (1000 Ohm, 90°)
4
ASZ12.33 (1000 Ohm, 135°)
7ASZ22.30 (1000/1000 Ohm, 90°)
8ASZ22.33 (1000/1000 Ohm, 135°)
BASZ16.703 (135 Ohm, 90°)
C
ASZ16.733 (135 Ohm, 135°)
LASZ66.733 (135/135 Ohm, 135°)
Rotational direction
(Product numbers ending without R are ccw)
R
Clockwise (when facing gear end. See Figure 6.)
Shaft seal (Only available with AGA58.4 3/8 inch square shaft)
Blank No shaft seal kit provided
-N4 Shaft seal kit AGA55.5 installed on actuator
6
4
0
SQM5
-N4
R
3
Z
1
R
4

SQM5… Reversing Actuators Technical Instructions
Document No. 155-517P25
Jan 25, 2022
Siemens Building Technologies, Inc. Page 7
Installation and
Operation
Instructions
SQM5… actuators are sometimes shipped without the shaft installed. To install the
selected shaft:
1. Loosen the two screws on the actuator cover corners. See Figure 2.
2. Lift the screws and raise the cover. See Figure 3.
Shaft Installation
Figure 2.
Figure 3.
3. Each shaft is supplied with two washers and a “C” clip. See Figure 4. Using
spreading pliers, remove the “C” clip and the washers from the shaft.
Figure 4.
4. Insert the “insert end” of the shaft into the “gear end” of the actuator.
5. Push the shaft until the “insert end” reaches just short of the brass bushing at the
other end of the actuator.
6. Put one of the washers on the insert end of the shaft. See Figure 5.
Figure 5.
7. Line up the “shaft key” with the key slot on the “gear end” of the actuator and slide
the shaft until the “insert end” is completely through the brass bushing.
8. Place the second washer onto the “insert end” of the shaft. Using spreading pliers,
install the “C” clip.

Technical Instructions SQM5… Reversing Actuators
Document No. 155-517P25
Jan 25, 2022
Page 8 Siemens Building Technologies, Inc.
Rotational Direction
Verification
Actuator model numbers that end with “R” are factory configured for clockwise (cw),
minimum to maximum rotation when facing the gear end of the actuator, or
counterclockwise (ccw) rotation when facing the other end of the actuator. The gear end
of the actuator is the side opposite of the visual position indicator.
To field reverse the direction of rotation, see Service Guide, “Reversing Rotational
Direction”.
Actuator Mounting
SQM5… actuators can be mounted in any orientation using the four holes located on
the bottom corners of the actuator base. Optional base mounting brackets are available.
See Table 2.
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.
Figure 6. Component Identification on the Cam Drum Side of the SQM5… Actuator.
Switch Adjustment
See Figure 6.
All SQM5…actuators are factory wired with Switch I (maximum), Switch II (fully closed
“economy position”) and Switch III (minimum). The individual switch cams I, II, and III
are factory set to 90, 0and 10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.

SQM5… Reversing Actuators Technical Instructions
Document No. 155-517P25
Jan 25, 2022
Siemens Building Technologies, Inc. Page 9
Switch Adjustment,
Continued
NOTE: If a potentiometer is installed, the adjustable range of the switches depends
on the range of the potentiometer.
SQM5x.xxxxxAx actuators may be adjusted between 0and 160.
SQM5x.xxxxxx3actuators have a 90potentiometer and the switches must be
adjusted only between 0 and 90.
SQM5x.xxxxxx4actuators have a 135potentiometer and the switches must
be adjusted only between 0 and 135.
Shaft Adjustment
See Figure 6.
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
See Figure 6.
Position Indicating Dial
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 6). 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.
The actual position of the SQM5… actuator is indicated by the gray actuator position
indicating pointer (see Figure 6). 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.
Wiring
Electrical Connection
SQM5… actuators are equipped with two removable conduit connection plates located
on the upper corner of the gear housing. Each plate is provided with two threaded
connections for 1/2" NPSM conduit connectors. The use of flexible stranded wire is
recommended.
Grounding
CAUTION:
To avoid electro-magnetic interference, the SQM5… actuators must be
grounded.
The ground terminal is located to the right of the auto/manual switch.
Disconnect the circuit board wire marked 51 during high voltage testing.
Reconnect it to the grounding terminal after the test.

Technical Instructions SQM5… Reversing Actuators
Document No. 155-517P25
Jan 25, 2022
Page 10 Siemens Building Technologies, Inc.
Wiring Connections
NOTE: SQM5… actuators require a single source, single phase power supply.
Wiring connections vary depending on which AGA56…. circuit board is installed.
AGA56.1… circuit boards.
See Figures 7 and 8.
Manual Operation
1. Set the AUTO/MAN switch in the MAN position.
2. Connect ground to the screw located below the shaft release button.
3. Connect neutral to the double terminal block, located on the left side of the gray
switch housing.
4. Only terminal "L" must be to enable manual operation. The actuator can now be
driven to the maximum position (switch cam I) or the fully closed "economy
position" (switch cam II) by using the toggle switch located to the left of the
AUTO/MAN switch.
Automatic Operation
1. Set the AUTO/MAN switch in the AUTO position.
2. Connect ground to the screw located below the shaft release button.
3. Connect neutral to the double terminal block located on the left side of the gray
switch housing.
4. Connect line voltage to terminal A to drive the actuator in the opening direction.
5. Connect line voltage to terminal Z to drive the actuator in the closing direction.
CAUTION:
Do not power terminals A and Z simultaneously. Actuator damage will occur.
Figure 7. Basic Functional Diagram of AGA56.1…

SQM5… Reversing Actuators Technical Instructions
Document No. 155-517P25
Jan 25, 2022
Siemens Building Technologies, Inc. Page 11
Wiring, Continued
Figure 8. AGA56.1A97 Terminal/Auto-Manual Board.
AGA56.41/42/43…
Circuit Boards.
See Figures 9 and 10.
Manual Operation
1. Set the AUTO/MAN switch in the MAN position.
2. Connect ground to the screw located below the shaft release button.
3. Connect neutral to terminal N.
4. Only terminal "L" must be powered to enable manual operation. The actuator can
now be driven to the maximum (high fire) position (switch cam I) or the fully closed
"economy position" (switch cam II) by using the toggle switch located to the left of
the AUTO/MAN switch.
Automatic Operation
1. Set the AUTO/MAN switch in the AUTO position.
2. Connect ground to the screw located below the shaft release button.
3. Connect neutral to terminal N.
4. Connect line voltage at all times to terminal L to provide power to the electronic
circuit board.
5. Connect line voltage to terminal LR to provide power when modulating. Connect
line voltage to Terminal LR only after removing power on terminals A and Z
(otherwise actuator damage may result).
6. Connect line voltage to terminal A to drive the actuator to the maximum (high fire
purge) position.
Once the maximum position is reached, terminal 11 (on switch I) will be energized
to provide position feedback.
7. Connect power to terminal ZL to drive the actuator to the minimum (low-fire)
position. Once the minimum position is reached, terminal 23 (on switch III) will be
energized to provide position feedback. Adjustment of switch III will determine the
low-fire stop position. Switch III (low fire) must be set at a higher position than
switch II (fully closed). Terminal ZL may be energized only after removing power
from terminals A, Z, 13, and LR.
8. Connect line voltage to terminal Z to drive the actuator to the fully closed/economy
position (switch II).
9. Connect the input control signal wires to the appropriate terminals. See Figure 9.
CAUTION:
Do not power terminals A and Z simultaneously. Actuator damage will
occur.

Technical Instructions SQM5… Reversing Actuators
Document No. 155-517P25
Jan 25, 2022
Page 12 Siemens Building Technologies, Inc.
Wiring, Continued
Figure 9. Basic Functional Diagram of AGA56.4…
Figure 10. AGA56.41/42/43… Terminal and Trim Potentiometer Boards.

SQM5… Reversing Actuators Technical Instructions
Document No. 155-517P25
Jan 25, 2022
Siemens Building Technologies, Inc. Page 13
AGA56.9… Circuit
Boards
See Figures 11 and 12.
Manual Operation
1. Set the AUTO/MAN switch in the MAN position.
2. Connect ground to the screw located below the shaft release button.
3. Connect neutral to terminal N.
4. Only terminal "L" must be powered to enable manual operation. The actuator can
now be driven to the maximum (high fire) position (switch cam I) or the fully closed
"economy position" (switch cam II) by using the toggle switch located to the left of
the AUTO/MAN switch.
Automatic Operation
1. Set the AUTO/MAN switch in the AUTO position.
2. Connect ground to the screw located below the shaft release button.
3. Connect neutral to terminal N.
4. Connect line voltage at all times to terminal L to provide power to the electronic
circuit board.
5. Connect line voltage to terminal L1 to provide power when modulating. Connect line
voltage to terminal L1 only after removing power on terminals A and Z (otherwise
actuator damage may result).
6. Connect line voltage to terminal A to drive the actuator to the maximum (high fire
purge) position. Once the maximum position is reached, terminal 11 (on switch I)
will be energized to provide position feedback.
7. Connect power to terminal ZL to drive the actuator to the minimum (low-fire)
position. Once the minimum position is reached, terminal 23 (on switch III) will be
energized to provide position feedback. Adjustment of switch III will determine the
low-fire stop position. Switch III (low fire) must be set at a higher position than
switch II (fully closed). Terminal ZL may be energized only after removing power
from terminals A, Z, 13, and LR.
8. Connect line voltage to terminal Z to drive the actuator to the fully closed/economy
position (switch II).
9. Connect the input control signal wires to the appropriate terminals. See Figure 11.
CAUTION:
Do not power terminals A and Z simultaneously. Actuator damage will
occur.

Technical Instructions SQM5… Reversing Actuators
Document No. 155-517P25
Jan 25, 2022
Page 14 Siemens Building Technologies, Inc.
Wiring, Continued
Figure 11. Basic Functional Diagram of AGA56.9…
Figure 12. AGA56.9… Terminal and Trim Potentiometer/Jumper Board.

SQM5… Reversing Actuators Technical Instructions
Document No. 155-517P25
Jan 25, 2022
Siemens Building Technologies, Inc. Page 15
Modulation Adjustment
See Figures 10 and 12.
The blue trim potentiometers allow the adjustment of the minimum (zero) and
maximum (span) positions.
The factory setting of the MIN trim potentiometer is rotated fully counter clockwise.
The factory setting of the MAX trim potentiometer is rotated fully clockwise.
Zero Adjustment
Set the OPE/MAX/MIN slide switch to MIN. The blue MIN trim potentiometer can now
be gently adjusted to the required minimum position. Return the OPE/MAX/MIN slide
switch to OPE for operation.
NOTE: Do not set switch cam I higher than:
90
when using feedback potentiometers ASZxx.30
135
when using feedback potentiometers ASZxx.33
Span Adjustment
Set the OPE/MAX/MIN slide switch to MAX. The blue MAX trim potentiometer can now
be gently adjusted to the required maximum position. Return the OPE/MAX/MIN slide
switch to OPE for operation.
Figure 13. Switch Cam and Trim
Potentiometer Setting.
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
cams I and III. See the example in
Figure 13.

Technical Instructions SQM5… Reversing Actuators
Document No. 155-517P25
Jan 25, 2022
Page 16 Siemens Building Technologies, Inc.
Cover Installation
1. Lift the two screws on the cover corners and slide the cover end into the grooves at
the gear end of the actuator. See Figure 14.
2. Press the cover into place and then press the screws inward and tighten. See
Figure 15.
Figure 14.
Figure 15.
Features of
SQM5x.xxxxxZx
Actuators
SQM5xx.xxxxxZx actuators contain the AGA56.9A… multi function circuit board. This
circuit board provides the following features:
Multiple Input Signals
The AGA56.9A… circuit board accepts the following input signals:
Line voltage
•Power to A drives the actuator open to the setting of switch cam I (Maximum).
•Power to ZL drives the actuator closed to the setting of switch cam III (Minimum).
•Power to Z drives the actuator closed to the setting of switch cam II (Economy).
•4 to 20 mA (Signal to Y3, common to M)
•0 to 135 (Slide wire signal to Y0, potentiometer connected to M and U4)
•0 to 10 Vdc (Signal to Y1, common to M)
•0 to 20 mA (Signal to Y2, common to M)
Multiple Output Signals
The AGA56.9A… circuit board provides the following output signals:
•4 to 20 mA (Signal from U3, common to M)
•0 to 10Vdc (Signal from U1, common to M)
•0 to 20mA (Signal from U2, common to M)
Double potentiometers ASZ22… provide additional output signals.

SQM5… Reversing Actuators Technical Instructions
Document No. 155-517P25
Jan 25, 2022
Siemens Building Technologies, Inc. Page 17
Electronic Linearization
Function
Butterfly valves have non-linear flow characteristics. Near the fully closed position, a small
change in the valve’s position will produce a very large change in flow. Near the fully open
position, a large position change will produce a relatively small change in flow.
The linearization function is intended to minimize the initial steep flow curve
characteristics of a typical butterfly valve. The linearization function is enabled when
Jumper J1 is in position 1 (upper position). Consequently, the actuator will make smaller
rotational movements when subjected to lower input signals and larger rotational
movements when subjected to higher input signals.
For example (based on a 90modulating range), a change in input signal from 4 to 8 mA
will cause a rotational movement of 11.25. An equal change from 16 to 20 mA will cause
a rotational movement of 45. Thus, with the linearization function enabled, the change in
flow is closely proportional to the change in input signal.
The linearization function is disabled when Jumper J1 is in position 2 (lower position).
When disabled, the rotational movement of the shaft is proportional to the input signal.
Input Signal Override
Line voltage to terminal P will drive the actuator to a pre-set adjustable position,
overriding all modulating input signals. Use the potentiometer marked POS to adjust the
override position to any setting within the setting range of switch cams I and III.
NOTE: The input
signal override can also be used for the ignition position of burners if different
from the low fire position.
Parallel Operation
Set Jumper J2 in position 1 (upper position) to configure the actuator for parallel
operation. Input signals Y0, Y1, Y2 or Y3 are directly shunted to output signals U1, U2
and U3. All output signals are available regardless of which input signal is applied.
Master/Slave Operation
Set J2 in position 2 (lower position) to configure the actuator for master/slave operation.
The output signals U1, U2 and U3 reflect actual shaft position.
Split Ranging
AGA56.9… circuit boards have a modulating signal shift feature which can be used for
split ranging. If no signal is present on Y0, Y1, Y2 or Y3, the actuator will modulate
through the full rotational range in response to a 12 to 20 mA signal applied at ZF. If a
maximum signal is present on Y0, Y1, Y2, or Y3, then the actuator will modulate through
the full rotational range in response to a 4 to 12 mA signal applied at ZF. (Maximum
signal can be easily achieved by bridging terminals U4 and Y0.) See Figure 16.
NOTE: It is possible to configure the actuator for split range operation 12 to 4 mA and
20 to 12 mA. Consult your authorized Siemens Building Technologies
combustion products sales representative for details.
Figure 16. Split Ranging.

Technical Instructions SQM5… Reversing Actuators
Document No. 155-517P25
Jan 25, 2022
Page 18 Siemens Building Technologies, Inc.
Features of
SQM5x.xxxxxGx,
SQM5x.xxxxxHx,
SQM5x.xxxxxKx
Actuators
SQM5x.xxxxxGx actuators contain the AGA56.41A… circuit board with terminals Y- and
Y+ for 4 to 20 mA modulating input.
SQM5x.xxxxxHx actuators contain the AGA56.42A… circuit board with terminals Y, M
and U for 0 to 135 modulating input.
SQM5x.xxxxxKx actuators contain the AGA56.43A… circuit board with terminals Y and M
for 0 to 10 Vdc modulating input.
Input Signals
The AGA56.4xA… circuit boards accept the following additional input signal:
Line voltage
•Power to A drives the actuator open to the setting of switch cam I (Maximum).
•Power to Z drives the actuator closed to the setting of switch cam II (Economy).
•Power to ZL drives the actuator closed to the setting of switch cam III (Minimum).
Output Signals
The AGA56.4xA… circuit boards do not provide output signals. Install a double
potentiometer ASZ22…to obtain a 0 to 1000 actuator position output signal.
Features of
SQM5x.xxxxxAx
Actuators
Input Signals
The AGA56.1A97… circuit boards accept the following additional input signal:
Line voltage
•Power to A drives the actuator open to the setting of switch cam I (Maximum).
•Power to Z drives the actuator closed to the setting of switch cam II (Economy).
•Power to switch III, terminal 3 drives the actuator to the setting of switch cam III
(Minimum).
Output Signals
The AGA56.1A97 circuit board provides no output signals. Install an ASZ… potentiometer
to obtain an actuator position output signal.
Service Guide
WARNING:
Disconnect the power supply to the actuator before performing any service
functions.
Reversing Rotational
Direction
1. Disconnect the wires marked 21 and 12, and reverse.
2. Adjust all switch cams to the desired settings (see Figure 6):
•For CCW rotation use the black cam drum scales and the single switch cam
pointers.
•For CW rotation, use the red cam drum scales and the double switch cam pointers.
NOTE: Press and hold the black cam drum release button to rotate the cam drum.
This will give easy access to the switch cams and a better view of the cam
drum scales.
If no potentiometer ASZ… is installed, the reversing procedure is complete. If a
potentiometer ASZ… is installed, complete Steps 3 through 9.

SQM5… Reversing Actuators Technical Instructions
Document No. 155-517P25
Jan 25, 2022
Siemens Building Technologies, Inc. Page 19
Reversing Rotational Direction,
Continued
Counterclockwise
Clockwise
Figure 17. Reversing Rotational Direction on the ASZ Potentiometer.
Figure 17a. Reversing Rotational Direction on the ASZ Potentiometer (Gear Models).
3. Disconnect the blue and brown wires from the terminal block located on the ASZ…
potentiometer circuit board and reverse. The black wire remains connected to the
middle terminal. See Figures 17 and 17a.
4. Remove the white plastic actuator position-indicating dial by gently pulling while rotating
in the clockwise direction. See Figure 6.
5. The actuator position indicating pointer, located near the actuator gear end of the cam
drum, must point to the “0” mark on the actuator position scale (scale on the cam drum
nearest to the actuator gear end). Press and hold the black cam drum release button
while manually rotating the cam drum.
6. Loosen the black potentiometer cam attachment screw approximately one turn. Gently
wedge a small screwdriver between the potentiometer and the gray plastic housing.
Gently twist the screwdriver until the potentiometer releases from the cam drum shaft.
7. Change potentiometer end position:
•Manually rotate the potentiometer position indication pointer exactly to the other
end mark (see Figure 17).
•Gear models (see Figure 17a):
For clockwise rotation, manually rotate the potentiometer gear until the white line
next to the “0” mark on the potentiometer gear face is exactly in alignment with the
potentiometer gear alignment pointer.
For counterclockwise rotation, manually rotate the potentiometer gear until the
white line next to the “1” mark on the potentiometer gear face is exactly in
alignment with the potentiometer gear alignment pointer

Technical Instructions SQM5… Reversing Actuators
Document No. 155-517P25
Jan 25, 2022
Page 20 Siemens Building Technologies, Inc.
Reversing Rotational
Direction, Continued
8. Firmly tighten the black potentiometer cam attachment screw while manually
holding the potentiometer position indication pointer in alignment. Check the
alignment again.
9. Re-install the white actuator-indicating dial by gently pressing it onto the
potentiometer cam attachment screw. Align scale position “0” on the actuator
position indicating dial with the dial pointer by rotating the dial in the clockwise
direction to avoid loosening the potentiometer cam attachment screw.
Shaft Installation
See Installation and Operation Instructions.
Preparation Before
Circuit Board Installation
WARNING:
Disconnect the power supply to the actuator before replacing the circuit
boards.
The black circuit board mounting
bracket, installed on the inside base of
the SQM5… actuator has four vertical,
slotted circuit board supports. Remove
the terminal section and circuit board(s)
from the mounting bracket.
The actuator motor capacitor is
attached to the lower section of the gray
plastic switch housing using snap-on
holding clips. Gently pull the capacitor
forward until it unclips and temporarily
place it on top of the gear housing. See
Figure 18.
Figure 18.
CAUTION:
Do not disconnect any capacitor wiring.
AGA56.41/42/43
Circuit Board
Installation
Remove the AGA56.41/42/43… circuit
board from the packaging. The circuit
board is shipped as one board.
Separate the board at the perforation by
holding the circuit board at both ends
and gently bending the board until it
separates.
Move the terminal section containing the
auto/manual switch to the opposite
end of the base circuit board.
From the switch housing side of the
actuator, guide the base circuit board
into the bottom of the circuit board
mounting bracket. See Figure 19.
Figure 19.