Data Sheet for Product

ManualsBrandsSiemens ManualsLarge Stroke (BC1)Electrohydraulic actuators SKB..

CM1N4564en Smart Infrastructure

2021

ACVATIX™

Electro-hydraulic actuators for valves

SKB..

with a

20 mm

stroke

● SKB32.. Operating voltage AC 230 V, 3-position control signal

● SKB82.. Operating voltage AC 24 V, 3-position control signal

● SKB6.. Operating voltage AC 24 V

– Control signal DC 0...10 V, 4...20 mA or 0...1000 Ω

– SKB62/MO RS-485 for Modbus RTU communication

– Selection of flow characteristic, position feedback, stroke calibration, LED

status indication, override control

– SKB62UA with selection of direction of operation, stroke limit control,

sequence control with adjustable start point and operation range, operation of

frost protection monitors QAF21.. and QAF61..

● Positioning force 2800 N

● Versions with or without spring-return function

● For direct mounting on valves; no adjustments required

● Manual adjuster and position indicator

● Optional functions with auxiliary switches, potentiometer, stem heater and

mechanical stroke inverter

● SKB..U are UL-approved

Summary of content (32 pages)

PAGE 1
ACVATIX™ Electro-hydraulic actuators for valves SKB.. with a 20 mm stroke ● ● ● ● ● ● ● ● ● CM1N4564en 2021-06-07 SKB32.. Operating voltage AC 230 V, 3-position control signal SKB82.. Operating voltage AC 24 V, 3-position control signal SKB6.. Operating voltage AC 24 V – Control signal DC 0...10 V, 4...20 mA or 0...
PAGE 2
Use For the operation of Siemens 2-port and 3-port valves of the types VVF.., VVG.., VXF.. and VXG.. with a 20 mm stroke as control and safety shut-off valves in heating, ventilation and air conditioning plants.
PAGE 3
Automatic operation mode For automatic operation, turn the manual adjuster clockwise to the end stop. The pressure cylinder moves upwards to the 0% stroke position of the valve. In the display window, the read scale disappears. Afterwards, swing the crank closed. Minimal volumetric flow The actuator can be manually adjusted to a stroke position > 0%, allowing its use in applications requiring a constant minimal volumetric flow.
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Electronics SKB60 1) 1) 1 Connection terminals 2 DIL switches 3 LED status indication 4 Stroke calibration From version ..L onward DIL switches Direction of operation Fail-in-place (behaviour in case of control signal loss) ** Positioning signal Y Flow characteristic Positioning feedback U ON Reverse acting Stops at current position DC 4...20 mA lin = linear OFF * Direct acting Closes DC 0...
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DIL switches Positioning signal Y Flow characteristic Positioning feedback U ON DC 4...20 mA lin = linear OFF * DC 0...
PAGE 6
SKB62/MO The Modbus converter is designed for analog control at 0...10 V. Keep the analog signal setting on the actuator as is (switch 1 to OFF); adjustment not permitted. The actuators are factory configured for equal-percentage characteristic. DIL switch (internal actuator characteristic changeover) to "log" (switch 2 to OFF). Functions Spring-return function The SKB32.51, SKB82.51.. and SKB62..
PAGE 7
The LED on the SKB62/MO cable adapter flashes red during the calibration, as the positioning signal Y and the positioning feedback U do not correspond anymore. This is interpreted as a blockage and thus indicated as an error. If necessary, the calibration can be repeated any number of times. LED indication of operational status SKB60, SKB62.., SKB62/MO The dual-colored LED indicating the operational status is visible when the cover is removed.
PAGE 8
Override control Z SKB60, SKB62..
PAGE 9
Stroke limit control and sequence control SKB62UA Setting the stroke limit control Setting the sequence control The rotary switches LO and UP can be used to apply a lower and upper limit to the stroke in increments of 3%, up to a maximum of 45%. The rotary switches LO and UP can be used to determine the start point or the operating range of a sequence.
PAGE 10
Type summary Operating voltage Type SKB32.50 Positioning signal Spring-return Function Time - - yes 10 s 1) SKB32.50/F 1), 3) Opening Closing AC 230 V SKB32.51 1) SKB32.51/F 1), 3) - SKB82.50 1) 3-position 120 s SKB82.50U 2) SKB82.51 1) SKB82.51U 2) SKB60 1), 4) SKB62 1) Standard electronics SKB62/F 1), 3) AC 24 V SKB62U 2) SKB62UA 2), 5) SKB62/MO 2) Positioning time DC 0...10 V 4...20 mA 0...
PAGE 11
SKB.. ASZ6.6 (S55845-Z108) Stem heater SKB32.. SKB82.. ● For media below 0 °C ● Mount between valve and actuator ASC9.3 ASZ7.3 ASK51 Double auxiliary switch Potentiometer Mechanical stroke inverter Adjustable switching points 0…1000 Ω 0% actuator stroke corresponds to 100% valve stroke Mount between valve and actuator Note: ASZ7.3 For the combination SIMATIC S5/S7 and use of positioning feedback, we recommend actuators with DC 0...9.8 V feedback signals.
PAGE 12
Ordering (example) Type / Stock number 1) Designation Number of pieces SKB62/MO / S55195-A127 Actuator Modbus RTU 1 ASC1.6 Auxiliary switch 1 1) Specify stock number if available. Spare parts Actuator Cover Hand control 1) Clamp Stem connection Control unit SKB32.50, SKB32.50/F SKB32.51, SKB32.51/F 410355768 SKB82.50 SKB82.50U 410356058 SKB82.51 410355768 SKB82.
PAGE 13
3-port valves VX.. (control valves for “mixing” and “distribution”) Valve type DN PN class kvs Data sheet [m3/h] VXF21.. 1) 25...80 VXF22.. VXF32.. VXF41.. 1) 15...80 Flansch 15...50 VXF42.. 10 16 15...80 VXF53.. 25 VXF61.. 15...50 VXF63.. VXG41.. 1.9...100 N4410 N4401 2.5...100 VXF31.. 1) VXF40.. 1) 6 Gewinde 40 16 N4420 1.6...100 N4402 1.9...100 N4430 1.9...31 N4440 1.6...100 N4403 1.6...40 N4405 1.9...31 N4482 0.2...36 A6V11459527 1.6...
PAGE 14
Notes Safety 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. WARNING Tensioned spring return Opening the actuator housing can release the highly tensioned return spring, which can cause flying parts and injuries. ● Do not open the actuator housing.
PAGE 15
Engineering Conduct the electrical connections in accordance with local regulations on electrical installations as well as the section Connection diagrams [➙ 26]. NOTE Using a safety limiter Failure to comply with applicable regulations for cable insulation may result in the suspension of the safety limiter function. ● Compliance with all applicable regulations for cable insulation must be ensured by the plant operator.
PAGE 16
Mounting Mounting Instructions 74 319 0324 0 for fitting the actuator to the valve and A5W00027551 for SKB62/MO are enclosed in the actuator packaging. The instructions for accessories are enclosed with the accessories themselves (see Product documentation [➙ 13]). Mounting positions Commissioning When commissioning the system, check the wiring and functions, and set any auxiliary switches and potentiometers as necessary, or check the existing settings.
PAGE 17
Manual operation For manual operation, swing out the crank [2] so that the display window [3] becomes visible. By rotating the crank or the manual adjustment knob [1], the display window shows the engagement bar and/or the scale dial [4] with stroke indication.
PAGE 18
Recommendation SKB6..: Trigger stroke calibration after maintenance. Repair: See Spare parts [➙ 12] WARNING Risk of injury through broken housing or cover Dismounting the actuator with broken housing from the valve can release the highly tensioned spring return, which can cause flying parts and injury. ● NEVER dismount actuator from valve. ● Dismount valve-actuator combination (control device) as complete unit. ● Disassembly only by qualified personnel.
PAGE 19
Technical data Power supply Operating voltage SKB32.. AC 230 V ± 15 % SKB82.. SKB6.. AC 24 V ± 20 % (SELV/PELV) SKB62/MO Frequency 50 / 60 Hz Maximum power consumption at 50 Hz SKB32.50, SKB32.50/F 10 VA / 8 W SKB32.51, SKB32.51/F 16 VA / 12 W SKB82.50, SKB82.50U 8 VA / 7 W SKB82.51, SKB82.51U 12 VA / 9 W SKB60.. 10 VA / 8 W SKB62.. 14 VA / 10 W External supply cable fuse SKB32.. Min. 0.5 A, slow Max. 6 A slow SKB82.. Min. 1 A, slow SKB6.. Max.
PAGE 20
Signal inputs / signal outputs Override control Z SK6.. Resistor 0…1000 Ω Z not connected, priority terminal Y No function Z connected directly to G Max. stroke 100 % Z connected directly to G0 Min. stroke 0 % Z connected to M via 0...1000 Ω Stroke proportional to R Position feedback U SK6.. Load impedance DC 0…9.8 V > 10 kΩ DC 4…19.6 mA < 500 Ω Enhanced functions SKB60 2), SKB62UA Selection of direction of operation SKB60, SKB62UA Direct-acting / reverseacting DC 0...10 V / DC 10...
PAGE 21
Electrical connections and connecting cable Wire cross-sectional area 0.5...2.5 mm2, AWG 21...14 3) Cable entries 4 x M20 (∅ 20.5 mm) SKB..U With knockouts for standard ½" conduit connectors (∅ 21.5 mm) SKB62/MO Fixed connection cable Cable length 0.9 m Number of cores 5 x 0.
PAGE 22
Dimensions / weight Dimensions See Dimensions [➙ 30] Weight SKB32.50, SKB32.50/F 9.15 kg SKB32.51, SKB32.51/F 9.20 kg SKB82.50 9.15 kg SKB82.50U 9.45 kg SKB82.51 9.20 kg SKB82.51U 9.50 kg SKB60 SKB62, SKB62/MO External Modbus converter SKB62U SKB62UA Stroke inverter ASK51 9.20 kg 0.15 kg 9.50 kg 1.0 kg Materials Housing Die-cast aluminium Bracket Housing box Plastic Manual adjuster Accessories Auxiliary switch ASC1.6 SKB6.. Switching capacity AC 24 V, 10 mA....
PAGE 23
Connection diagrams Internal diagrams SKB32.. SKB32.51 SKB32.50 AC 230 V 3-position Cm1 End switch n Solenoid valve for spring-return c1, c2 ASC9.3 double auxiliary switch a, b, c ASZ7.3 potentionmeter Y1 Positioning signal „open“ Y2 Positioning signal „close“ 21 Spring-return function N Neutral conductor SKB82.. SKB82.51 SKB82.50 AC 24 V 3-position Siemens Smart Infrastructure Cm1 End switch n Solenoid valve for spring-return c1, c2 ASC9.3 double auxiliary switch a, b, c ASZ7.
PAGE 24
SKB6.. SKB60, SKB62 SKB62U, SKB62UA AC 24 V DC 0...10 V 4...20 mA 0...
PAGE 25
Connection terminals SKB6.. AC 24 V DC 0...10 V 4...20 mA 0...1000 Ω System neutral (SN) System potential (SP) Positioning signal DC 0...10 (30) V or DC 4...20 mA Measuring neutral (= G0) Position indication DC 0...10 V oder DC 4...20 mA Override control (Functions [➙ 8]) SKB62/MO AC 24 V Modbus RTU Connention cable System neutral (SN) Black System potential (SP) Red Reference line (Modbus RTU) Violet Bus + (Modbus RTU) Gray Bus - (Modbus RTU) Pink Auxiliary switch ASC1.
PAGE 26
Connection diagrams SKB32.. SKB32.51 SKB32.50 AC 230 V 3-position F1 26 Siemens Smart Infrastructure Safety limiter (e.g.
PAGE 27
SKB82.. SKB82.51, SKB82.51U SKB82.50, SKB82.50U AC 24 V 3-position F1 Safety limiter (e.g.
PAGE 28
SKB6.. SKB60 DC 0...10 V AC 24 V 4...20 mA 0...1000 Ω SKB62, SKB62U, SKB62UA DC 0...10 V AC 24 V 4...20 mA 0...1000 Ω Y1 Actuator F3 Temperature detector N1 Controller F4 Frost protection monitor with 0...1000 Ω signal output, e.g. QAF21.. or QAF61.. (only SKB62UA) *) F1 Safety limiter (e.g.
PAGE 29
SKB62/MO AC 24 V Modbus RTU A Actuator N1 Controller G System potential G0 System neutral REF Reference line (Modbus RTU) + Bus + (Modbus RTU) - Bus - (Modbus RTU) NOTE Using safety limiter F1 When using the safety limiter F1, ensure that no mistakes may occur on cable insulation that may cancel out the temperature limiter function (applies to both 230 V as well as 24 V types). ● For SN earthing (e.g. PELV) comply under all circumstances with the note above.
PAGE 30
Dimensions Actuator All dimensions in mm * Height of actuator from plate with stroke inverter ASK51 = 432 mm ** SKB..U: with knockouts for standard ½" conduit connectors (∅ 21.5 mm) > 100 mm, minimum clearance form ceiling or wall for mounting > 200 mm, connection, operation, maintenance, etc.
PAGE 31
External Modbus converter All dimensions in mm X Siemens Smart Infrastructure 250 mm 31 CM1N4564en 2021-06-07
PAGE 32
Revision numbers Type Valid from rev. no. Type Valid from rev. no. SKB32.50 ..D SKB62 ..G SKB32.50/F ..D SKB62/F ..G SKB32.51 ..D SKB62U ..G SKB32.51/F ..D SKB60 ..G SKB82.50 ..D SKB62UA ..G SKB82.50U ..D SKB62/MO ..H SKB82.51 ..D SKB82.51U ..D Issued by Siemens Switzerland Ltd Smart Infrastructure Global Headquarters Theilerstrasse 1a CH-6300 Zug Tel. +41 58 724 2424 www.siemens.