Siemens SSC161.05UT User manual

Electromotoric actuator
SSC161.05UT
For pressure independent zone valves, small globe valves and 3-party valves
●Operating voltage AC/DC 24 V, positioning signal DC 0...10 V
●Self calibrating to the valve stroke
●Direct mounting with coupling nut, no tools required
●Manually override
●Position and actuator motion indication (LED)
●Positioning force 300 N
●Parallel operation of multiple actuators possible
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Use
●For zone valves VVP.., VXP.., VMP..: compatible with SSC161.05UT
●For 2-/3-port valves: compatible with SSC161.05UT
●Typically in chilled ceiling, VAV and fan coil unit applications
●Max.10 units of SC161.05UT can operate in parallel, provided the controller output
suffices.
Technical design
When the actuator is driven by DC 0…10 V positioning signal, it produces a stroke, which is
transmitted to the valve stem.
DC 0…10 V positioning signal
●The valve opens / closes in proportion to the
positioning signal at Y.
●At DC 0 V, actuator stem is retracted, the normally
closed valve is fully closed.
●When there is no operating voltage, the actuator
maintains its current position.
●This actuator provides a DC 0…10 V position
feedback signal proportional to the stroke of the
actuator stem.
Y = Positioning signal Y [V]
H = Percentage of calibrated valve stroke
LED indication
Status
LED indication patterns
Variants
SSC161.05UT
Stroke movement: Stem retracting
Flashing green in sequence: LED1-->LED2-->LED3 (500 ms each)
Stroke movement: Stem extending
Flashing green in sequence: LED3-->LED2-->LED1 (500 ms each)
Stem position
At H0 - H40: Constant green (LED3)
At H40 - H60: Constant green (LED2)
At H60 - H100: Constant green (LED1)
Calibration
Flashing green (LED2): 100 ms on, 100 ms off
Error
Constant red (LED2)
Manual operation
Flashing green/red alternatively (LED2): Green 500 ms, red 500 ms
Type summary
Type
Stock number
Operating
voltage
Running
speed
Running time
5.5 mm
Positioning
signal
Actuator
characteristic
SSC161.05UT
S55180-A149
AC/DC 24 V
5 s/mm
27.5 s ±25 %
DC 0…10 V
Linear

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Ordering
When ordering, specify both type and quantity.
Example:
Type
Stock number
Designation
Quantity
SSC161.05UT
S55180-A149
Electromotoric actuator
2
Delivery
Valves and actuators must be ordered separately. For easier valve assembly, actuators
ordered separately have the actuator stem fully retracted.
Equipment combinations
Combinable valves
Type reference
Valve type
Kvs [m3/h]
PN class
Data sheet
VVP45..
2-port valves
0.25…25
PN 16
N4845
VXP45..
3-port valves
VMP45..
3-port valves with T-bypass
0.25…4.0
VVG45..1)
2-port valves
0.63…25
Retrofitting to former Landis & Gyr
valves
VXG45..1)
3-port valves
X3i..1)
3-port valves
0.7…14
1)With ASK30 mounting kit
Note: To ensure trouble-free operation of
third-party valves with the actuator, the
valves must satisfy the following
requirements:
●Threaded connections with coupling nut:
¾” inch
●Nominal force: > 300 N
●Dimension X ≥ 8.3 mm
●Dimension Y ≤ 14.8 mm
Controllers
Type
AC/DC 24 V; DC 0…10 V
DXR2
DXR2..
RXB..
RXB39.1..

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Combinable room thermostats
Type
Detail
RDG..
RDG160KN, RDG160T, RDG260, RDG405KN
RDU..
RDU340
RCU..
RCU50..
Product documentation
Topic
Title
Document ID
Mounting and installation
Mounting instructions
A6V13463377
Standards and directives
CE declarations
A5W00254962A
RCM conformity
A5W00254983A
Environmental compatibility
Environmental declarations
A5W00244689A
Related documents such as the environmental declarations, declarations of conformity, etc.,
can be downloaded from the following Internet address:
www.siemens.com/bt/download
Notes
Engineering
The actuators must be electrically connected in accordance with local regulations (see
"Connection diagram [▶13]").
CAUTION
National safety regulations
Failure to comply with national safety regulations may result in personal injury and property
damage.
●Observe national provisions and comply with the appropriate safety regulations.
Observe permissible temperatures (see "Technical data [▶10]").
Mounting
WARNING
●Do not use pipe wrenches, pliers or similar tools.
●Avoid lateral pressure or (cable) tension on the mounted actuator!
Valve and actuator are easy to assemble on site before commissioning:
●Remove protective cover from the valve body.
●Position the actuator and tighten the union nut manually.
●See "Mounting instruction" for graphical instructions.

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Orientation
Installation
A [mm]
B [mm]
C [mm]
5.5
6.0
35
Crimp ferrule on stripped wire of connecting cable.
●Observe all admissible temperatures (see "Technical data [▶10]").
●Do not twist the cable.
●Magnets can damage the actuator.
●Provide a means for isolation from the power supply, e.g., connecting a circuit breaker or
switch fuse upstream of the control unit.
CAUTION
National safety regulations
Failure to comply with national safety regulations may result in personal injury and property
damage.
●Observe national provisions and comply with the appropriate safety regulations.
CAUTION
Phase cut and pulse-duration-modulated (PDM) signals are not suitable.
Regulations and requirements to ensure the safety of people and property must be
observed at all times!
Commissioning
When commissioning, check both wiring and functioning of the actuator.
●Actuator stem extends
Normally open valve closes, normally closed valve opens
●Actuator stem retracts
Normally open valve opens, normally closed valve closes
NOTICE
The actuator must be commissioned only with a correctly mounted valve in place!
Self-calibration
When operating voltage is applied, the actuator self-calibrates (fully retracted ➙fully
extended ➙setpoint).

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CAUTION
Never intervene manually during self-calibration.
NOTICE
●Correct calibration is only possible with valve stroke > 1.2 mm. Valve stroke < 1.2 mm
results in calibration failure.
●If calibration fails, the actuator performs another calibration automatically after
10 seconds.
●After three failed calibration attempts, the actuator stem remains in the extended
position and the valves are open.
Power
On
Calibration Y
t
Fully retracted
Fully extended

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Manual operation
A 3-mm Allen wrench can be used to move the actuator to any position.
To move the actuator stem manually
1. Open the cover using a proper screwdriver.
2. Press and hold down button (a) illustrated below for at least three seconds.
–The actuator ignores any positioning signal from the controller.
3. Adjust the position of the actuator stem by rotating Allen wrench (b) illustrated below
clockwise or anti-clockwise.
–The actuator stem moves down if you rotate clockwise; it moves up if you rotate anti-
clockwise. The manually set position is retained.
4. To exit manual operation mode, press and hold down button (a) illustrated below again
for at least three seconds.
–The actuator runs a self-calibration automatically. Positioning signal sent from the
controller takes effect.
5. Close the cover.
NOTICE
If operating voltage is applied to actuator, press button (a) before and after manually
adjusting the position of the actuator stem. If no operating voltage and positioning
signal are applied, manual operation can be done without pressing button (a).
Cabling operation
1. Unscrew cover screw
2. Remove cover
3. Connect or disconnect wire terminals
4. Install the cover
5. Screw in the cover screw
3 mm
(b)
(a)
>3s
A6V13359034Z00

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Maintenance
The actuators require no maintenance.
WARNING
Operating voltage must be switched off during any maintenance!
NOTICE
When carrying out service work on the plant, note the following:
●Switch off operating voltage.
●If necessary, disconnect electrical connections from the terminals.
●The actuator must be commissioned only with a correctly mounted valve in place!
Disposal
The device is considered an electronic device for disposal in accordance
with European guidelines and may not be disposed of as domestic waste.
●Dispose of the device through channels provided for this purpose.
●Comply with all local and currently applicable laws and regulations.
Warranty
Technical data on specific applications are valid only together with Siemens products listed
under "Equipment combinations". Siemens rejects any and all warranties in the event that
third-party products are used.
Open Source Software (OSS)
Software license overview
These devices use Open Source Software (OSS). All Open Source Software components
used in the product (to include copyrights and licensing agreement) are available at
http://siemens.com/bt/download.

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Firmware version
OSS document
Device
Document ID
Title
2.10.0 or above
A6V13503690
Readme OSS for Modulating Room Actuator 200N, 300N
All

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Technical data
Power supply
Operating voltage
AC 24 V (±15 %) or DC 24 V (±20 %)
Frequency
50/60 Hz
Power consumption
3.5 VA
Primary fuse or breaker rating
External, 2 A quick blow
Signal input
Positioning signal
DC 0…10 V to Y
Input impedance
100 kOhm
Parallel operation (number of actuators)
Max. 101)
1) Provided that the controller output is sufficient.
Signal output
Feedback signal
DC 0…10 V
Max. output current
1 mA
Max. output voltage
-
Resolution
1:100
Operating data
Position with de-energized contact Y
See "Technical design [▶2]"
Running speed
5 s/mm ±25 %
Positioning force
300 N
Stroke
1.2…6.5 mm
Permissible temperature of medium in the connected
valve
1…120 °C
Electrical connection (connecting cable integral)
Permissible length for signal lines
<20 m
Wire cross section
0.5...0.75 mm²
Cable diameter
<5.5 mm
Mounting
Connection to valve
Brass coupling nut ¾” inch
Orientation
360°