Document:

Unassociated Document

Exhibit 4.8.45 - Self-Control Components - Actuator - SKC 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 covariant

	
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 covariant

	 	* 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 Reservior

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

	
Reverse

	
Sequence control

	
DC 4...20mA

	
Linear

	
*OFF

	
Forward 

	
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 resulti 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 =20mmUnassociated Document

Exhibit 4.8.46 - Self-Control Components - Actuator - SKD 62

 

	

	
4563

	
Electro-hydraulically Operated Valve Actuator

	
SKD62

	  	 
	
Stroke: 20mm

	
SKD60

	
l

	
SKD62...:

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

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

	
l

	
SKD60:

	 	
Same as SKD62, but without spring returning function

	
l

	
SKD62U:

	 	
Same as SKD62, but certified by UL

	
l

	
 SKD62UA:

	 	
Same as SKD62U, 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 1000N

	
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

	
l

	
SKD62U and SKD62UA certified by UL (American Appliance Quality Standard)

 

  

  

  

 

Application

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

	
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...+140°C

	
  

	
 >140°C: Use SKB...actuators

	
  

	
 <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

	
SKD62...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

	
SKD62UA 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

	
SKD62U and SKD62UA 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

	
SKD62

SKD62U*

	
AC 24V

	
DC 0...10V,

20mA  or

0...1000 Ω

	
Yes

	
15s

	
30s

	
15s

	
No

	
SKD60

	
No

	
-

	
Improved variant

	
SKD62UA*

	
AC24V

	
DC 0...10V,

4...20mA  or

0...1000 Ω

	
Yes

	
15s

	
30s

	
15s

	
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

Placing an Order

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

	
For example:

	
1 actuator, Model SKD62, 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;

 

  

  

  

 

	
Valve

	
DN[mm]

	
PN[Bar]

	
Technical Literation

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

	
VVF21...(Flanged)

	
25...80

	
6

	
4310

	
VVF31...(Flanged)

	
25...80

	
10

	
4320

	
VVF40...(Flanged)

	
15...80

	
16

	
4330

	
VVF41...(Flanged)

	
50...50

	
16

	
4340

	
VVF45...(Flanged)

	
50...50

	
16

	
4363

	
VVF52...(Flanged)

	
15...40

	
25

	
4373

	
VVF61...(Flanged)

	
15...25

	
40

	
4382

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

	
VXF21...(Flanged)

	
25...80

	
6

	
4410

	
VXF31...(Flanged)

	
25...80

	
10

	
4420

	
VXF40...(Flanged)

	
15...80

	
16

	
4430

	
VXF41...(Flanged)

	
15...50

	
16

	
4440

	
VXF41...(Threaded)

	
15...50

	
16

	
4463

	
VXF61...(Flanged)

	
15 and 25

	
40

	
4482

	
Assembled valve VP...(integrated by two-way valve and pressure differential controller);

	
VPF52...(Flanged)

	
15...40

	
25

	
4374

 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, can match with valves supplied by any third party 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 SKD...actuators

 

  

  

  

Function of Spring Return

All SKD62...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.

SKD60 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

	
lOperate in normal

	
Running automatically, all in normal

	  	
Flickering

	
lIn process of stroke checking

	
Wait to end of checking

(LED stop flickering)

	
Red

 

	
ON

 

	
lStroke checking error

 

 

lInternal error

	
Check installation

Restart the checking process

(check holes by short circuiting)

Replace electronic elements

	  	
Flickering

	
lClogged internal valve

	
Check valves

	
    OFF

	
lNo power supply

lDefective electronic elements

	
Check the power supply

Replace electronic elements

 

  

  

  

 

	
 

Standard 

Electronic 

Variant

SKD62,

SKD60,

SKD62U

	

 

	  	
DIL Switch

	  	  
	  	
ON

	
DC 4...20mA

	
Linear

	  	
*OFF

	
DC 0...10V

	
Equally proportional

	
 

Functionality 

Improved 

Electronic 

Variant

SKD62UA

 

 

 

 

	

 

 

 

 

  

  

  

 

	
DIL Switch

	  	  	  	  
	
ON

	
Reverse

	
Sequence control

	
DC 4...20mA

	
Linear

	
*OFF

	
Forward

	
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

	
LOPosi. 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 11.

	

	
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, until the indicator marking red MAN disappears, to completely close the Siemens valve VVF..., VVG..., VPF..., VXF...and VXG...(stroke =0%).

 

  

  

  

 

	

 

	
Manual

	
Operation

	  

Automatic Operation

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%

	
Frequency

	
50 or 60 Hz

	
Power Consumption

	
17 VA / 12 W

	
Fuse of Power Supply Cable

	
Min. 1 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:30s / OFF:15s

	
Spring Returning Time (Closed)

	
15s

	
Standard Stroke

	
20mm

	
Regulating Force

	
1000 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

 

  

  

  

 

	
General Ambient Conditions

	
Permissible highest operating temperature of valve inner medium

	
 

≤140 °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

	
3.60 kg (packaging included)

3.85 kg (packaging included)

1,10 kg (packaging included)

	
Material

	
Actuator case and bracket

Shell and manual regulator

	
Casting aluminum

Plastic

	
Piston-leading Cable

	
SKD62, SKD60

SKD62U, SKD62UA

	
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 SKD62U...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 ASK50

* Max. stroke =20mm

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