Unassociated Document



Exhibit 4.8.44 - Self-Control Components - Actuator - SKB Series


 





	


	
4566







 








 








 



	
Electro-hydraulically Operated Valve Actuator

	
SKB62  SKC62


	 	 
	
Stroke: 20mm or 40mm

	
SKB60  SKC60













	
l

	
SK...62...:

	
AC 24V operating voltage, DC 0...10V control signal


	  	  	
4...20mA or 0...1000Ω, with spring returning function


	
l

	
SK...60:

	
Same as SK...62, but without spring returning function


	
l

	
SK...62U:

	
Same as SK...62, but certified by UL


	
l

	
SK...62UA:

	
Same as SK...62U, but functionality is improved (stroke limit control, sequence control of adjustable starting point and operating range and selection of operating direction)


	
l

	
Selection of linear or equally proportional flow characteristics


	
l

	
Valve position feedback


	
l

	
Stroke checking


	
l

	
Display of LED status


	
l

	
Compulsory control function


	
l

	
Designed with manual adjustment and position indicating functions


	
l

	
Regulating force up to 2800N


	
l

	
Directly installed onto valve body without adjustment


	
l

	
To improve the functionality by additional auxiliary switch, valve stem heating element and mechanical stroke inverter ( For SKB...only)


	
l

	
SK...62U and SK...62UA certified by UL (American Appliance Quality Standard)











  





  











  








Application


Used for Siemens made series of two-way valve, three-way valve WF...and VXF..., with a driving stroke of 20mm or 40mm



	
l

	
Field of application in accordance with IEC 721-3-3 (Provisions by   International Electro-technical Commission 721-3-3) , Class 3K5








	
l

	
Ambient temperature: -15...+55°C








	
l

	
Temperature of medium flowing through the valve: -25...+220°C







>220...350°C: For special extension of valves


<0°C: Required to be used for heating element ASZ6.5 of the valve stem







Function



	
l

	
Electro-hydraulically actuator, maintenance free








	
l

	
Open the valve using pump, pressure cylinder and piston








	
l

	
Close the valve using spring return and by-pass valve








	
l

	
Designed with manual adjustment and position indicating function








	
l

	
SK...62...is designed with spring returning function, in accordance with DIN 32730








	
l

	
Standard electronic variant:








	 	
-

	
Selective control signal (DC 0 ... 10 V / 4 ... 20 mA / 0 ... 1000 Ω)








	 	
-

	
Selective  flow characteristics (proportional / linear)








	 	
-

	
Valve position feedback








	 	
-

	
Stroke checking








	 	
-

	
Display of LED status








	 	
-

	
Compulsory control through terminal Z








	
l

	
SK...62UA variant with improved functionality:








	 	
-

	
Stroke limit control








	 	
-

	
Sequence control of adjustable starting point and Operating range








	 	
-

	
Selection of Operating direction (forward/reverse)








	
l

	
Installation space with auxiliary switch








	
l

	
Use valve stem heating element if necessary








	
l

	
Install mechanical stroke inverter if necessary (For SKB...only)








	
l

	
SK...62U and SK...62UA certified by UL (American Appliance Quality Standard)











  





  











  








Type








	
SKB...stroke 20mm

	
Model

	
Operating


Voltage

	
Control


(Control Signal)

	
Spring Return


Function Time

	
Running


Time


On              Off

	
Improved


Functionality


	
Standard variant

	
SKB62


SKB62U*

	
AC 24V

	
DC 0...10V,


4...20mA  or


0...1000 Ω

	
Yes

	
15s

	
120s

	
15s

	
No


	
SKB60

	
No

	
-


	
Improved variant

	
SKB62UA*

	
AC24V

	
DC 0...10V,


4...20mA  or


0...1000 Ω

	
Yes

	
15s

	
120s

	
15s

	
Stroke limit control


Sequence control


Signal convariant













	
SKC...stroke 40mm

	
Model

	
Operating


Voltage

	
Control Mode


(Control Signal)

	
Spring Return


Function Time

	
Running


Time


On              Off

	
Improved


Functionality


	
Standard

	
SKC62


SKC62U*

	
AC 24V

	
DC 0...10V,


4...20mA  or


0...1000 Ω

	
Yes

	
20s

	
120s

	
20s

	
No


	
SKC60

	
No

	
-


	
Improved

	
SKC62UA*

	
AC24V

	
DC 0...10V,


4...20mA  or


0...1000 Ω

	
Yes

	
20s

	
120s

	
20s

	
Stroke limit control


Sequence control


Signal convariant


	 	* Certified by UL 





 


Accessories



	
Model

	
Description


	
ASC1.6

	
Auxiliary switch


	
ASZ6.5

	
Valve stem heating element AC 24V


	
ASK51

	
Mechanical stroke inverter (For SKB...only)












Placing an Order


Please indicate quantity, product name, model of the actuator when placing an order.


For example: 1 actuator, Model SKC62, and


    1 auxiliary switch, Model ASC1.6.


Transportation


The actuator, valve and accessories are packed separately and are not assembled together during transportation.







Compatibility


Controller


The actuator can be driven by AC 24V SELV/PELV power supply and all the control systems running control signal of DC 0...10V or 4...20mA .






  





  











  








Installed on the linear valve


The actuator is used for the following Siemens made two-way valves and three-way valves, with a driving stroke of 20mm or 40mm;




	
Valve

	
DN[mm]

	
PN[Bar]

	
Technical Literation


	
Two-way valve VV... (control valve or safety shut-off valve)


	
VVF21...(Flanged)


VVF31...(Flanged)


VVF40...(Flanged)


VVF41...(Flanged)


VVF45...(Flanged)


VVF52...(Flanged)


VVF61...(Flanged)

	
25...100


25...150


15...150


50...150


50...150


15...40


15...150

	
6


10


16


16


16


25


40

	
4310


4320


4330


4340


4345


4373


4382


	
Three-way valve VX... ( For control valve with functions of “confluence” and “split flow”)


	
VXF21...(Flanged)


VXF31...(Flanged)


VXF40...(Flanged)


VXF41...(Flanged)


VXF61...(Flanged)

	
25...100


25...150


15...150


15...150


15 and 25

	
6


10


16


16


40

	
4410


4420


4430


4440


4482









 


 Refer to the valve technical data accordingly for permissible pressure differential ΔPmax and OFF pressure differential ΔPa.







Note: Actuators with a stroke from 6mm through 20mm (SKB...) and from  12mm through 40mm (SKC...) can match with valves supplied by any third party if  as long as this party can provide materials to prove that their valves are of fail-safe mechanical design and can “shut off without applying voltage” and materials regarding required mechanical coupling.







For more information please contact your local Siemens office.











  





  











  








Technology


Principle of electro-hydraulically operated actuator




	





	





	
 


 


 


1.    Manual Regulator


2.    Pressure Cylinder


3.    Piston


4.    Oil Reservoir


5.    Pressure Chamber


6.    Pump


7.    Returning Spring


8.    By-pass Valve


9.    Coupler


10.  Valve Rod


11.  Inner Valve


12.  Valve Positioner (0-1)


	
Closed

	
Opened

	  







 



	
l

	
Signal input Y, increased voltage: pump (6) drives the hydraulic oil in the oil reservoir (4) to the pressure chamber (5), this action will produce a stroke: valve stem (10) contracts and valve head (11) opens.








	
l

	
Signal input Y, decreased voltage: by-pass valve (8) opens to allow the hydraulic oil return to the oil reservoir (4) from the pressure chamber (5) through returning spring (7), valve stem (10) extends and valve head (11) closes.








	
l

	
Signal input Y, constant voltage: the actuator and valve maintain at current stroke position.












Electronic diagram of SKB...and SKC...actuators


 








 




  





  











  






 


Function of Spring Return


All SK...62...actuators are designed with spring return function in the factory. In case of power failure or lack of control signal, the spring may return to let the actuator return to the “0%” stroke position.


SK...60 actuators are not designed with spring return function. In case of power failure the actuator will stay at current stroke position.







Compulsory Control Function


There are three operating modes of the compulsory control input point (Z):








	
w/o such function

	
Compulsory control for 0...1000 Ω signal


	
 








 


-     Disconnected Contact Z


-     Valve stroke following control signal Y

	
 








 


-     Z is connected to Contact M through resistor R


-     Characteristics of linear or equally proportional flow


-     Starting from 50 Ω / Ending at 900 Ω


-     Point Y not to function


	
Fully opened valve

	
Fully closed valve


	



 


-     Contact Z directly connecting to G


-     Point Y not to work

	



 


-     Z Contact directly connecting to G0


-     Point Y not to work







Note: For Mode Z, assumption is made for setting of FORWARD in the factory.







Stroke Checking


Checking is required upon the first match between the valve and the actuator to determine the 0% and 100% stroke position of the valve. To this regard, mechanical connection is required between the valve and the actuator (See Section of Compatibility); the power supply is AC 24V. The checking process can be described repeatedly.


 



	


	
Prior to checking, make sure that the manual regulator is changed over “Auto” mode for recording an actual valve.







 




  





  











  






 



	
In order to commence the checking, the inside of the lockhole in the actuator’s typeplate must be short-circuited (for example, with screwdriver).


Auto checking procedures are as follows:

	
     













	
l Change the actuator over 0 stroke (Position (1)), the valve closes and the green LED light flashes.


l Then change the actuator over 100% stroke (Position (2)), the valve opens and the green LED light is ON.


l Save the measurements. The checking process ends. The green LED light is ON (Running normally).


l Change the actuator over positions controlled by control signal Y or Z(3).


l This process shows that Output Point U does not work, for example, the valve only act to represent the actual position when the green LED stops flickering or continues to keep shining

	
     












Display of LED Status



	
LED

	
Displays

	
Function

	
Correction


	
Green

	
ON

	
l Operate in normal

	
Running automatically, all in normal


	  	
Flickering

	
l In process of stroke checking

	
Wait to end of checking


(LED stop flickering)


	
Red


 

	
ON


 

	
l Stroke checking error


 


 


l Internal error

	
Check installation


Restart the checking process


(check holes by short circuiting)


Replace electronic elements


	  	
Flickering

	
l Clogged internal valve

	
Check valves


	
OFF

	
l No power supply


l Defective electronic elements

	
Check the power supply


Replace electronic elements











  





  











  






 




	
Standard


Electronic


Variant


SKB62, 


SKC62


SKB60, 


SKC60


SKB62U,


SKC62U

	

















	  	
DIL Switch

	  	  
	  	
ON

	
DC 4...20mA

	
Linear


	  	
*OFF

	
DC 0...10V

	
Equally proportional
















	
Functionality


Improved


Electronic


Variant 


SKB62UA,


SKC62UA


 

	














  





  











  












	
DIL Switch

	  	  	  	  
	
ON

	
Forward

	
Sequence control

	
DC 4...20mA

	
Linear


	
*OFF

	
Reverse

	
Stroke limit control

	
DC 0...10V

	
Equally Proportional







* All the switches are set as OFF in the factory.


Selection of operating direction



	
l

	
For normally closed valves, FORWARD indicates an input signal of 0 V and valve closed (for all Siemens valves as listed in the Section “Compatibility” in Page 3).








	
l

	
For normally opened valves, FORWARD indicates an input signal of 0 V and valve opened.













	
Forward

	
Reverse

	  
	






 


- input   DC 0...10V


             DC 4...20mA


             0...1000 Ω

	






 


- input   DC 10...0V


              DC 20...4mA


              1000...0 Ω

	
 










 


Note: function of mechanical spring return is unaffected by the operating direction.






  





  











  








Stroke limit control and sequence control


 



	
Setup Stroke Limit Control

	  	
Setup Sequence Control


	
Use the scroll switch LO and UP to adjust the stroke position up and/or down, with increased by 3% and a maximum of 45%


 





 

	  	
Use the scroll switch LO and UP to determine the starting point and the sequence within the operating range


 





 


	
LO Posi.   Min Stroke Limit

	
UP Posi.   Max Stroke Limit

	
LO Posi. Starting Point of Sequence Control

	
UP Posi.  Operating range of Sequence Control


	
0               0 %

	
0          100 %

	
0              0 V

	
0             10 V


	
1               3 %

	
1            97 %

	
1              1 V

	
1               3 V  *


	
2               6 %

	
2            94 %

	
2              2 V

	
2               3 V  *


	
3               9 %

	
3            91 %

	
3              3 V

	
3               3 V  *


	
4             12 %

	
4            88 %

	
4              4 V

	
4               4 V


	
5             15 %

	
5            85 %

	
5              5 V

	
5               5 V


	
6             18 %

	
6            82 %

	
6              6 V

	
6               6 V


	
7             21 %

	
7            79 %

	
7              7 V

	
7               7 V


	
8             24 %

	
8            76 %

	
8              8 V

	
8               8 V


	
9             27 %

	
9            73 %

	
9              9 V

	
9               9 V


	
A            30 %

	
A           70 %

	
A           10 V

	
A            10 V


	
B            33 %

	
B            67 %

	
B            11 V

	
B            11 V


	
C            36 %

	
C            64 %

	
C            12 V

	
C            12 V


	
D            39 %

	
D            61 %

	
D           13 V

	
D            13 V


	
E            42 %

	
E            58 %

	
E            14 V

	
E            14 V


	
F            45 %

	
F            55 %

	
F            15 V

	
F            15 V







*The minimum regulating variable is 3V;


 0...30V control is only for Y.







Accessories



	
 


Auxiliary Switch ASC1.6


 


- Switchpoint 0...5% stroke


 




	
 


Valve Stem Heating Element ASZ6.5


  


- Medium is below 0oC


 


- Installed between the valve and the actuator

	
 














  





  











  








Engineering Precautions


Electrical connection of actuators must meet the requirements of local regulations and the wiring diagram in Page 12.



	


	
Strictly follow all the safety regulation and requirements to prevent from damage and injury.







Valve Stem Heating Element ASZ6.5 can generate a heat output of 30VA, and valve stem must avoid freezing when Operating in refrigerating range 0...-25°C.


In this case, the actuator bracket and valve stem need not be insulated to ensure proper air circulation.


The body in contact with the non-insulated hot element may possibly be scalded.


Failing to follow the above-mentioned recommendations may possibly result in accidents or fire.


Follow the permissible temperature range (See Application and Technical Data).







 Instructions of Installation


Direction







	  	
Allowed

	
Not allowed









The guidelines of installation for assembling the valves and actuators can be found in the actuator packing box and the instruction manual of the accessories and the installing accessories can be found in the packing box.







Commissioning Precautions


During commissioning of system, you should check the cables and functions, set auxiliary switch, potentiometer and stroke limit device or check the setting values of existing parameters.



	



 


Cylinder with valve rod connectors contracts completely →stroke=0%

	



 


Cylinder with valve rod connectors projects completely →stroke=100%







The manual regulator must be rotated counterclockwise to the end to completely close the Siemens valve VVF...and VXF...(stroke =0%).






  





  











  








Automatic Operation


For automatic operation, manually adjust the handle (1) on the crank (2). It must be interlocked, if not, rotate the crank counterclockwise until the Display Window (3) will neither display the scale (4) nor display crank interlocking rack.








	



 


Interlocking crank(2) on the manual regulating handle (1)

	



 


Display window without scale and crank interlocking rack












Manual Operation


For manual operation, turn the crank (2) until Display Window (3) appears. The display window will show the interlocking rack and/or the dial with stroke indicators by rotating the crank or manual regulating handle (1).



	



 


Turn the crank


Display Window (3)

	



 


Display window with dial (4) and stroke indicator












Maintenance



	


	
When repairing valves:







l   Stop the pump and switch of the power supply. Close the main valves on the pipeline. Relieve pressure in the system. Cool the system down completely. If necessary, disconnect electrical wires and cables..


l   Commissioning must be made again when the valve can correctly be matched with the actuator.







Disposal



	


	
Actuators cannot be disposed as domestic wastes because they are provided with electronic and electrical components.


Disposal of actuator must comply with local laws, rules, and regulations.


 











  





  











  








Guarantee


Relevant technical data (ΔPmax, ΔPs, leak rate, noise level and service life) regarding application are valid for Siemens actuators and valves listed in matched “Compatibility” only.


 



	
  

	
Matching of the actuator to valves from a third party must be approved by Siemens Building Technologies’ in prior; otherwise, all guarantees are in void.












Technical Data



	
Power supply

	
Operating Voltage (SELV, PELV)

	
AC 24V -20%/+30%


	
Frequency

	
50 or 60 Hz


	
Power Consumption

	  
	
SKB62...

	
17 VA / 12 W


	
SKB60

	
13 VA / 10 W


	
SKC62...

	
28 VA / 20 W


	
SKC60

	
24 VA / 18 W


	
Fuse of Power Supply Cable

	  
	
SKB...

	
Min. 1 A


	  	
Max. 10 A


	
SKC...

	
Min. 1.6 A


	  	
Max. 10 A


	
Operating Parameter

	
Type of Control (proportional)

	
DC 0...10 V, DC 4...20mA


	  	
or 0...1000 Ω


	
Running Time (50 Hz)

	
        ON           OFF


	
SKB...

	
120 s            15 s


	
SKC...

	
120 s            20 s


	
Spring Returning Time (Closed)

	  
	
SKB...

	
15 s


	
SKC...

	
20 s


	
Standard Stroke

	  
	
SKB...

	
20 mm


	
SKC...

	
40 mm


	
Regulating Force

	
2800 N


	
Flow Characteristics

	
Linear / Equally Proportional


	  	
Optional*


	
Signal Input Point

	
Terminal Y


 Voltage


    Impedance Input


 Current


    Impedance Input


 Signal resolution


 Hysteresis phenomenon

	
 


DC 0...10 V


100 kΩ


DC 4...20mA


240Ω


< 1%


1%


	
Terminal Z


     Resistance


Compulsory control function Disconnected Z


     Z directly connected to G


     Z directly connected to G0


     Z connected to M through 0...1000 Ω

	
 


0...1000 Ω


 


No (prioritized terminal Y)


Max. stroke 100%


Min. stroke 0%


Linear / Equally proportional


	
 Signal Output Point

	
Terminal Y


 Voltage


   Load impedance


 Current


   Load impedance

	
 


DC 0...9.8 V ±2 %


>500 Ω


DC 4...19.6 mA ±2 %


<500 Ω







Corresponding to valves listed in the Section of “Compatibility”  in Page 3.


 




  





  











  












	
General Ambient


Conditions

	
Permissible highest operating temperature of valve inner medium

	
 


≤220 °C


	
Operation


Ambient conditions


Temperature


Humidity

	
Accord with IEC 721-3-3


Grade 3K5


–15 ... +50 °C


5 ... 95 % rh


	
Transportation


Ambient conditions


Temperature


Humidity

	
Accord with IEC 721-3-2


Grade 2K3


–30 ... +65 °C


<95 % rh


	
Storage


Ambient conditions


Temperature


Humidity

	
Accord with IEC 721-3-1


Grade 1K3


–15 ... +50 °C


5 ... 95 % rh


	
Industrial Standard

	
In compliance with CE Standard


EMC directive


Low voltage protection directive

	
 


89/336/EEC


73/23/EEC


	
Electromagnetic Compatibility


Radiation interference


Immunity interference

	
 


EN 61000-6-3 (Residential)


EN 61000-6-2 (Industrial)


	
Electronic Auto Control Product Standard

	
EN 60 730-2-14


	
C-tick

	
N474


	
Protection Degree

	
EN 60529 ,IP54


	
Safety Degree

	
EN 60730, III


	
UL certification

	
UL 873


	
Dimensions

	  	
See “Dimensions”


	
Weight

	
SKB...


SKC...


ASK51 Stroke Inverter

	
8,60 kg (packaging included)


10,00 kg (packaging included)


1,10 kg (packaging included)


	
Material

	
Actuator case and bracket


Shell and manual regulator

	
Casting aluminum


Plastic


	
Piston-leading Cable

	
SK...62, SK...60


SK...62U, SK...62UA

	
Pg 11 (4 x)


Pg 16 (4 x)


	
Improved Functions


SK...62UA

	
Forward / Reverse

	
DC 0...10 V / DC 10 ... 0 V


DC 4...20mA / DC 20 ... 4 mA


0 ... 1000 Ω / 1000 ... 0 Ω


	
Stroke Limit Control

	
Control lower limit range


Control upper limit range

	
 0 ... 45 %, Adjustable


100 ... 55 %, Adjustable


	
Sequence Control

	
Terminal Y


Sequence staring point


Sequence operating range

	
 


0...15V, Adjustable


3...15V, Adjustable


	
Accessories

	  	  
	
Auxiliary Switch


ASC1.6

	
 


Convariant capacity

	
 


AC 24 V, 10 mA ... 4 (2) A


	
Valve Stem Heating


Element ASZ6.5

	
Operating voltage


Power consumption (heat output)

	
AC 24 V ±20 %


30 VA











  





  











  








Wiring Diagram



	





	
B1 Sensor


F1 Temperature Limiter


N1 Controller


Y1 Actuator












Connection Terminals



	





	
G0: Operating voltage AC 24V  Neutral Line of the System (SN)

G: Operating voltage AC 24C  Earth Line of the System (SP)

Y: Control signal DC 0 ... 10 (30) V or DC 4 ... 20 mA


M: Neutral line of measurement (=G0)


U: Position display DC 0 ... 10 V or DC 4 ... 20 mA


Z: Compulsory input (See Functions in Page 5)












Auxiliary Switch ASC1.6












  





  











  








Dimensions


Dimensions in mm








 



	
* 

	
Height of actuator without stroke inverter ASK51=300mm







    Height of actuator with stroke inverter ASK51=357mm



	
** 

	
Socket dia. of actuator SK...62U...corresponds to cable leading plug Pg16.







 



	
▲

	
= >100 mm (minimum distance from the wall or ceiling).







 


▲▲ = >200 mm (for connection, operation or maintenance, etc.).







Stroke Inverter ASK51





 


* Max. stroke =20mm