SISTO SK-i LED User manual

Operating manual
8676.81/6-10 - ORIGINAL
SISTO-SK-i LED
SISTO-SK-i LED AS-i
Intelligent Actual-position Feedback Unit
for Linear Valves
Stroke: 5 - 45 mm

Contents
Glossary...................................................................................................................................................................3
1 General.....................................................................................................................................................................4
1.1 Principles.......................................................................................................................................................4
1.2 Contact data ..................................................................................................................................................4
1.3 Target group...................................................................................................................................................4
1.4 Other applicable documents..........................................................................................................................4
1.5 Key to safety symbols/markings.......................................................................................................................... 4
2 Safety information...................................................................................................................................................4
2.1 General..........................................................................................................................................................4
2.2 Intended use..................................................................................................................................................4
2.3 Consequences and risks caused by non-compliance with these manual...................................................... 5
2.4 Safety awareness..........................................................................................................................................5
2.5 Safety information for the operator/user........................................................................................................5
2.6 Safety information for maintenance, inspection and installation....................................................................5
 2.7 Unauthorisedmodicationandmanufactureofspareparts ..........................................................................5
2.8 Unauthorised modes of operation..................................................................................................................5
3 Productinfomation (REACH)..................................................................................................................................5
4 Delivery/Storage/Disposal......................................................................................................................................5
4.1 Checking the condition upon delivery............................................................................................................5
4.2 Storage..........................................................................................................................................................5
4.3 Disposal.........................................................................................................................................................5
5 Marking ....................................................................................................................................................................6
6 Exploded View.........................................................................................................................................................6
7 Technical Data.........................................................................................................................................................7
7.1 Technical Data SISTO-SK-i LED 24V............................................................................................................7
7.2 Additional technical data for SISTO-SK-i LED with solenoid valve................................................................8
7.3 Technical Data SISTO-SK-i LEDAS-i............................................................................................................9
7.4 Additional technical data for SISTO-SK-i LEDAS-i with solenoid valve......................................................10
7.5 Inputs and Outputs of SISTO-SK-i LEDAS-i...............................................................................................10
7.6 Dimensions and weights...............................................................................................................................11
8 Mounting/Installation............................................................................................................................................12
8.1 Mounting of the actual-position feedback unit on the valve actuators of the SISTO-C LAP........................12
8.2 Mounting of the actual-position feedback unit on the valve actuators of the SISTO-C LAP.520/.530 ......... 13
8.3 Accessories .................................................................................................................................................13
8.4 Mounting on valves from other manufactures..............................................................................................14
8.5 Electrical installation....................................................................................................................................14
8.6 Pneumatically installation (only for actual-position feedback unit with solenoid valve) ...............................15
9 Commisioning/Start-up/Shutdown/Removing.................................................................................................... 16
9.1 Commissioning the actual-position feedback unit SISTO-SK-i LED/SISTO-SK-i LED AS-i without
an integrated solenoid valve - on site..........................................................................................................16
9.2 Commissioning the actual-position feedback unit SISTO-SK-i LED/SISTO-SK-i LED AS-i without
an integrated solenoid valve - remote initialisation......................................................................................16
9.3 Commissioning the actual-position feedback unit SISTO-SK-i LED/SISTO-SK-i LED AS-i with an
integrated solenoid valve - on site...............................................................................................................17
9.4 Commissioning the actual-position feedback unit SISTO-SK-i LED/SISTO-SK-i LED AS-i with an
integrated solenoid valve - remote initialisation...........................................................................................17
9.5 Reset of the actual-position feedback unit...................................................................................................17
9.6 Shutdown.....................................................................................................................................................17
9.7 Removing the actual-position feedback unit................................................................................................17
10 Trouble-shooting...................................................................................................................................................18
10.1 Error messages/operating status SISTO-SK-i LED/SISTO-SK-i LED AS-i...............................................18
10.2 Aditional error messages/operating status SISTO-SK-i LED AS-i..............................................................19
11 Maintenance/Cleaning ..........................................................................................................................................19
Declaration of incorporation ...........................................................................................................................................20
Declaration of conformity (RoHS/EMC).......................................................................................................................... 21
2

3
Glossary
Type Series Booklet
The Type Series Booklet can be downloaded at:
http://sisto-aseptic.com/downloads/
or
https://products.ksb.com/
SISTO-C LAP
SISTO-C diaphragm valve with pneumatic piston actua-
tor, stainless steel
SISTO-C LAP.520
SISTO-C diaphragm valve with pneumatic piston actua-
tor, stainless steel
SISTO-C LAP.530
SISTO-C diaphragm valve with pneumatic piston actua-
tor, aluminium, hard anodised
SISTO-SK-i LED
SISTO intelligent actual-position feedback unit
SISTO-SK-i LED AS-i
SISTO intelligent actual-position feedback unit with
AS Interface

1 General
1.1 Principles
This operating manual describes the proper and safe use of the
SISTO-SK-i LED intelligent actual-position feedback unit, or for the
SISTO-SK-i LED AS-i intelligent actual-position feedback unit in all
phases of operation.
The actual-position feedback unit SISTO-SK-i LED/SISTO-SK-i LED
AS-i is used to measure the stroke of pneumatic valve actuators and
to control them (optional).
In the event of damage, discrepancies and questions, immediately
contact SISTO Armaturen sales organisation responsible in order to
maintain the right to claim under warranty.
Only correct installation, maintenance or repair will ensure smooth
operation of the actual-position feedback unit.
The manufacturer shall not accept any liability for the actual-position
feedback unit if the manual set forth in this manual are not complied
with.
In the case of any deviations or questions contact SISTOArmaturen.
1.2 Contact data
SISTO Armaturen S.A.
After-Sales-Services
18, rue Martin Maas
L-6468 Echternach Luxembourg
Tel.: [phone]
Fax: [phone]
Email: [email protected]
www.sisto-aseptic.com
1.3 Target group
This operating manual is aimed at the target group of trained and
qualiedspecialisttechnicalpersonnel.
1.4 Other applicable documents
Document Description
Type series booklet
8676.5 SISTO-SK-i LED Description of the SISTO-SK-i LED/ SISTO-SK-i LED AS-i actual-position
feedback unit
Operating manual
0570.822 Installation/operating manual of the SISTO-C/SISTO-B diaphragm valves
1.5 Key to safety symbols/markings
Symbol Description
DANGER
In conjunction with the signal word DANGER
this symbol indicates a high-risk hazard, which
if not avoided, will result in death or serious
injury.
WARNING
In conjunction with the signal word WARNING
this symbol indicates a medium-risk hazard,
which if not avoided, could result in death or
serious injury.
CAUTION
In conjunction with the signal word CAUTION
this symbol indicates a low-risk hazard, which
if not avoided, could result in minor injury.
Electrical hazard
In conjunction with one of the signal words this
symbol indicates a hazard involving electrical
voltage and identies information about pro-
tection against electrical voltage.
4
Symbol Description
CAUTION
In conjunction with the signal word CAUTION
this symbol indicates a hazard for the machine
and its functions.
NOTE
This symbol indicates recommendations and
important information on how to handle the
product.
2 Safety information
All the information contained in this section refers to hazardous situ-
ations.
In addition to the present general safety information the action-related
safety information given in the other sections must be observed.
2.1 General
This operating manual contains general installation, operating and
maintenanceinstructionsthatmust be observed toensuresafeproduct
operation and prevent personal injury and damage to property.
Comply with all the safety instructions given in the individual sections
of this operating manual.
Theoperatingmanual must be readandunderstood by the responsible
specialistpersonnel/operators prior to installation and commissioning.
Thecontentsofthisoperatingmanual mustbeavailabletothespecialist
personnel at the site at all times.
Information attached to the actual-position feedback unit, the valve
or accessories must always be complied with and kept in a perfectly
legible condition at all times.
This operating manual does not take into account:
• Anyeventualitiesorincidentswhichmayoccurduringinstallation,
operation and maintenance performed by the customer.
• Localregulations;theoperatormustensurethatsuchregulations
areobserved by all, including thepersonnel called in for installation.
The operating manual must be kept for the entire life cycle of the
equipment.
Foranyqueriesyou may have orinthecase of damage, pleasecontact
SISTO Armaturen.
2.2 Intended use
▪ The actual-position feedback unit SISTO-SK-i LED/SISTO-SK-i
LED AS-i is used to measure the stroke of pneumatic valve actua-
tors and to control them (optional).
▪ Theactual-positionfeedbackunitmustonlybeoperatedinperfect
technical condition.
▪ Onlyoperatetheactual-positionfeedbackunitwithintheoperating
limits described in the other applicable documents.
▪ Othermodesofoperation,ifnotmentionedinthedocumentation,
must be coordinated with SISTOArmaturen.
2.2.1 Prevention of foreseeable misuse
▪ Itisnotallowedtoenterfollowinguidsintheairsupplyportsofthe
actual-position feedback unit:
 -noliquidsuids
 -nouidscontainingsolids
 -noaggressiveuids
 -nocombustibleuids.
▪ Theactual-positionfeedbackunitmustnotbeoperatedinpotentially
explosive atmospheres.
!
DANGER

▪ Iftheactual-positionfeedbackunitistobeusedinadampenvi-
ronment, steps must be taken to ensure that any liquid that collects
drains away from and does not penetrate the housing.
▪ Theunitmustneverbecleanedwithawaterjetand/oraggressive
cleaning agents (observe the requirements of the type of enclosure
Section 7.2, Page 8/Section 7.4, Page 10).
▪ Thehousingoftheactual-positionfeedbackunitmustnotbesub-
jectedtomechanicalloads. Connection and pneumatic lines mustbe
routed in such a way that no forces act on the actual-position feed-
back unit.
▪ Protect actual-position feedback unit against source of radiation
(e.g. the sun).
▪ Protectactual-positionfeedbackunitagainstvibrations.
▪ Regularly check that the electrical and pneumatic connections
are correctly seated and that the connection to the pneumatic valve
actuator is correct.
▪ Neverexceedthepermissibleapplicationandoperatinglimitsspeci-
 edintheproductliteratureregardingpressure,temperature,etc.
2.3 Consequences and risks caused by non-compliance
with this manual
Non-compliancewiththisoperatingmanualwillresultinlossofwarranty
and forfeiture of any and all rights to claims for damages.
Non-compliance can have the following consequences for example:
• Failureofimportantfunctionsoftheproduct,
• Failureofprescribedmaintenanceandservicingpractices,
• Hazardtopersonsbyelectricalandmechanicale󰀨ects.
2.4 Safety awareness
Inaddition to the safety information contained in thisoperating manual
and the intended use, the following safety regulations shall be com-
plied with:
• Accidentprevention,healthregulationsandsafetyregulations,
• Explosionprotectionregulations,
• Safetyregulationsforhandlinghazardoussubstances,
• Applicablestandards,directivesandlaws.
2.5 Safety information for the operator/user
Theactual-positionfeedbackunit with valve isintendedforuse in areas
whichcannotbeaccessedbyunauthorisedpersons.Operationofthese
valves in areas, which can be accessed by unauthorised persons, is
onlypermittedifappropriateprotectivedevicesarettedatthesite.
This must be ensured by the operator.
• Fit protective equipment (e.g. contact guards) supplied by the
operatorfor hot, cold or movingparts, and check that theequipment
functions properly.
• Do not remove any protective equipment (e.g. contact guards)
during operation.
• Bringtheplantandplantsectionintoasafestatethatallowssafe
switching on the actual-position feedback unit and the valve.
• Electrical hazards must be eliminated. (For details, refer to VDE
regulations and the safety regulations laid down by the local energy
supply companies, for instance).
• Theoperatorhastoensurethattheguardsforlivecomponentsare
regularly checked for any damage. The valve must never be ope-
rated without appropriate protection.
2.6 Safety information for maintenance, inspection and
installation
• Theoperatorensuresthatmaintenance,inspectionandinstallation
 areperformedbyauthorised,qualiedspecialistpersonnelwhoare
thoroughly familiar with the manual
• Alwaysusesuitabletoolstoensureproperfunctioningoftheactual-
position feedback unit.
5
• CarryoutworkontheSISTO-SK-iLED/SISTO-SK-iLEDAS-iactual-
position feedback unit and the valve during standstill only.
• Generallyrecognisedsafetyandtechnicalrulesmustbeadhered
to when planning deployment and during operation.
• Prior to commissioning/start-up of the actual-position feedback
unit observe the Section 9.1-9.4, Page 16.
• For shutdown of the actual-position feedback unit observe the
Section 9.6, Page 17.
2.7 Unauthorisedmodicationandmanufactureof
spare parts
Modicationsoralterationsoftheactual-positionfeedbackunit and
the valve are only permitted with the manufacturer‘s prior consent.
Use only original spare parts and accessories authorised by the
manufacturer. The use of other parts can invalidate any liability of the
manufacturer for resulting damage.
2.8 Unauthorised modes of operation
The warranty relating to the operating reliability and safety of the
SISTO-SK-i LED/SISTO-SK-i LED AS-i actual-position feedback unit
supplied is only valid if the equipment is used in accordance with its
intended use as described in Section 2.2. The limits stated in the
technical literature must not be exceeded under any circumstances.
3 Product information (REACH)
ProductinformationasperRegulationNo.1907/2006(REACH):
For information as per chemicals Regulation (EC) No. 1907/2006
(REACH),seehttp://www.ksb.com/reach.
4 Delivery/Storage/Disposal
4.1 Checking the condition upon delivery
Upon receipt of the goods, check immediately that the goods are
complete and undamaged.
If the actual-position feedback unit was ordered together with a pneu-
matic valve actuator, the combined unit will come fully assembled.
In the case of any deviations contact the manufacturer.
4.2 Storage
Storage/temporary storage must ensure that even after a prolonged
period of storage the function of the actual-position feedback unit will
not be impaired. The following requirements must be met:
▪ Storeinoriginalpackaging,
▪ Dry,
▪ Dark,
▪ Dust-freeenvironment,
▪ Storagetemperaturemustbebetween+10°Cand+30°C.
4.3 Disposal
Comply with applicable legal requirements and regulations.

6
5 Marking
The actual-position feedback unit is marked with:
▪ Manufacturer
▪ Serialnumber
▪ Type
Not listed:
Metal inserts 1.4404
NBR sealing elements
Cover (PA6)
Holder (PA66GF30)
Slide (POM)
Bottom section (PA66GF30)
(optional 1.4404)
Socket (PBT)
(model LAP.520 = PA)
Printed circuit board
(Elektronics)
Stroke sensor
(Elektronics)
Spring
(Stainless steel)
Connector M12
(Elektronics)
Rod
(only for LAP.520)
6 Exploded view

7
7 Technical data
7.1 Technical data of SISTO-SK-i LED 24 V
Permissibleoperatingtemperature:-30°Cto+60°C
Electrical data
____________________________________________________________
1) Binary output
2) Binary input
3) With integrated solenoid valve only
Characteristic Value
Electrical connection 8-pin M12 round plug connector
Supply voltage [V] 24 +/- 10 %
Current input [mA] Approx. 45
Duty ratio 100 %
Digital outputs 24V,max.100mA;short-circuit-proof
Open
Closed
Fault
Digital inputs 24V,Low:0-3V;High:18-24V
Remote initialisation
Pin Assignment
1 +24 V
2 DO Open 1)
3 0 V
4 DO Closed 1)
5DI Teach in 2)
6 DI Solenoid valve 2) 3)
7 DO Fault 1)
8 Not used
Threaded port Assignment
1 Air supply
2 Actuator
3 Air outlet
1
2
3
1)
2)
Indicator and operating elements of
SISTO-SK-i LED Connector pin assignment of SISTO-SK-i LED
Pneumatic connection of SISTO-SK-i LED
1) Magnetic sensor
2) High-visibilityLED
Colour code of high-visibility LED
Colour code of
high-visibility LED Operating status
Orange Valve in open position
Green Valve in closed position
Red Fault
Yellow Initialising
Blue Not initialised

7.2 Additional technical data of SISTO-SK-i LED with solenoid valve
Electrical data
Pneumatic data
Materials
8
Characteristic Value
Current input [mA] Approx. 90
Additional digital input Solenoid valve
Characteristic Value
Threaded port Internal thread M5
Flow rate [lN/min] 15
P max. [bar] 10
Compressed air quality ISO 8573-1 3/3/3
Standards
Enclosure to EN 60529 IP65
Safety class to EN 61140 Safety class III
Directives
Electromagnetic Compatibility Directive (EMC) 2014/30/EU
RoHSDirective 2011/65/EU
Machinery Directive 2006/42/EG
Description Material Material number
Pneumatic connection X2CrNiMo17-12-2 1.4404

7.3 Technical data of SISTO-SK-i LED AS-i
Permissibleoperatingtemperature:-30°Cto+60°C
Electrical data
ASInterfaceprole
9
Characteristic Value
Electrical connection 5-pin M12 round plug connector
Supply voltage [V] 26,5 - 31,6
Current input [mA] Approx. 85
Duty ratio 100 %
AS-ispecication V3.0
Feature Value
I/Oconguration 7
ID-Code A
ID1-Code *
ID2-Code E
1)
2)
3)
4)
Indicator and operating elements of
SISTO-SK-i LED AS-i Connector pin assignment of SISTO-SK-i LED AS-i
Pin Assignment
1 AS-i +
2 Not used
3 AS-i -
4 Not used
5 Not used
1) Magnetic sensor 2) High-visibilityLED
3) AS-i Fault 4) AS-i Power
Pneumatic connection of SISTO-SK-i LED AS-i
1
2
3
Threaded port Assignment
1 Air supply
2 Actuator
3 Air outlet
Colour code of
high-visibility LED Operating status
Orange Valve in open position
Green Valve in closed position
Red Fault
Yellow Initialising
Blue Not initialised
Colour code of LED Operating status
Green AS-i-Power
Red AS-i-Fault
Colour code of high-visibility LED

7.4 Additional technical data for SISTO-SK-i LED AS-i with solenoid valve
Electrical data
Pneumatic data
Materials
7.5 Inputs and Outputs of SISTO-SK-i LED AS-i
Inputs of SISTO-SK-i LED AS-i (AS-i master perspective)
Outputs of SISTO-SK-i LED AS-i (AS-i master perspective)
10
Characteristic Value
Current input [mA] Approx. 135
Characteristic Value
Threaded port Internal thread M5
Flow rate [lN/min] 15
P max. [bar] 10
Compressed air quality ISO 8573-1 3/3/3
Standards
Enclosure to EN 60529 IP65
Safety class to EN 61140 Safety class III
Directives
Electromagnetic Compatibility Directive (EMC) 2014/30/EU
RoHSDirective 2011/65/EU
Machinery Directive 2006/42/EG
Bit Function Logic
DO0 Operate valve 0=Pilotvalvenotoperated(iftted)
1 = Pilot valve operated
DO1 Not connected -
DO2 Activate teach-In 0 = Normal operation
1 = Initialisation mode
DO3 Not connected -
Description Material Material number
Pneumatic connection X2CrNiMo17-12-2 1.4404
Bit Function Logic
DI0 OPEN position 0 = „Not open“ position
1 = „Open“ position
DI1 CLOSED position 0 = „Not closed“ position
1 = „Closed“ position
DI2 Ready 0 = Normal operation
1 = Initialisation mode
DI3 Fault 0 = Normal operation
1 = Fault
Alternatingat1Hz=valvenotinitialised

11
7.6 Dimensions and weights
Mechanical data
Dimensions table of SISTO-SK-i LED/SISTO-SK-i LED AS-i
Weights
Linear valves, variants 4)
_______________________________________________
4) Further mounting variants available on request.
Actuator SISTO-C LAP SISTO-C
LAP.520/530
Ordering code for
mounting options 00 01 02 03
L [mm] - 38 38 59
GG1/4in. M12 x 1 M18 x 1 M18 x 1
H [mm] 6 6 6 6
Diaphragm diameter [MD] 30 - 168 30 - 65 92 - 115 168
Material Material number Weight [kg]
Plastic, black PA66-GF30 0,170
X2CrNiMo17-12-2 1.4404 0,380
Dimensions [mm]
Diameter 55
Height 87
Stroke 5-45
SISTO-C LAP SISTO-C LAP.520

12
8 Mounting/Installation
8.1 Mounting of the actual-position feedback unit on the valve actuators of the SISTO-C LAP type series:
2. Screw the actual-position
feedback unit into the tread
and hand-tight.
1. Remove the guide bush on
the pneumatic valve actuator. 3. To adjust the connections exactly, the actual-position feedback unit can
be rotated further in clockwise direc-
tion.
After adjusting the actual-position feed-
back unit can be tightened with the help
of a wire pin (Section 8.3, Page 13).
DANGER
Risk of serious injury or death due to explosion!
The actual-position feedback unit must not be operated in potentially explosive atmospheres.
ATTENTION
Itisnotallowedtoenterfollowinguidsintheairsupplyportsoftheactual-positionfeedbackunit:
-noliquidsuids -nouidscontainingsolids
-noaggressiveuids -nocombustibleuids.
ATTENTION
▪ Protectactual-positionfeedbackunitagainstsourceofradiation(e.g.thesun).
▪ Protectactual-positionfeedbackunitagainstvibrations.
NOTE
▪ Iftheactual-positionfeedbackunitistobeusedinadampenvironment,stepsmustbetakentoensurethatanyliquidthat
collects drains away from and does not penetrate the housing.
▪ Thehousingoftheactual-positionfeedbackunitmustnotbesubjectedtomechanicalloads.Connectionandpneumatic
lines must be routed in such a way that no forces act on the actual-position feedback unit
NOTE
Regularly check that the electrical and pneumatic connections are correctly seated and that the connection to the pneumatic
valve actuator is correct.

8.2 Mounting of the actual-position feedback unit on the valve actuators of the SISTO-C LAP.520/.530 type series:
8.3 Accessories
13
1. Remove the guide bush
and the actual-position feed-
back unit on the pneumatic
valve actuator.
2. Screw the actual-position
feedback unit into the tread and
hand-tight.
With connection thread M18 x 1
in the actuator screw in thread
adapterrst.
3. To adjust the connections
exactly, the actual-position feed-
back unit can be rotated further in
clockwise direction.
After adjusting the actual-position
feedback unit can be tightened
with the help of a wire pin (Section
8.3, Page 13).
WARNING
Risk of injuries, damage to equipment or damage to the environment due to incorrect assembly!
Theassemblingmustbeperformedbyqualiedspecialistpersonnelwithsuitabletools.
Carry out work on the SISTO-SK-i LED/SISTO-SK-i LED AS-i actual-position feedback unit during standstill only.
Prior to commissioning/start-up of the actual-position feedback unit observe the Section 9.1-9.4, Page 16.
Adapter
M18 x 1
NOTE
Whenassemblingtheactual-positionfeedbackunit,asu󰀩cientdistancetoelectromagneticsourcesofinterferencemustbe
maintained.
Wire pin
NOTE
The bottom housing section and the adapter can be interlocked. To do this, insert
awirepin(diameter≈1mm)throughtheopeninginthehousingintotheholein
the adapter.
This wire pin is an accessory available as a set with programming magnet and
lanyard with the article no. 42493506.

8.4 Mounting on valves from other manufactures
NOTE
On demand SISTO-SK-i LED actual-position feedback unit can also be mounted on valves from other manufactures. It is
advisable to clarify the technical details in advance by consulting SISTOArmaturen.
8.5 Electrical installation
1. Check the supply voltage and voltage of the digital inputs.
2. GentlyconnecttheM12sockettotheM12plugontheactual-positionfeedbackunitandscrewthemrmly.
Ensure that the anti-rotation device is positioned correctly.
14
DANGER
Danger from electrical voltage!
Thesystemmustbede-energisedandsafeguardedagainstrestartinganditmustbeveriedthatitisde-energisedbeforeit
is accessed. All applicable accident prevention, health and safety regulations must be observed when working on electrical
equipment.
WARNING
Danger to life resulting, damage to equipment or damage to the environment from incorrect assembly!
Themountingisperformedbyqualiedspecialistpersonnelwithsuitabletools,only.
Carry out work on the SISTO-SK-i LED/SISTO-SK-i LED AS-i actual-position feedback unit during standstill only.
Prior to commissioning/start-up of the actual-position feedback unit observe the Section 9.1-9.4, Page 16.
DANGER
Danger from electrostatic discharge!
Take special care when the housing is open due to possible electrostatic discharge.
NOTE
A shielded connection cable must be used for the installation.
SISTO-SK-i LED
Pin Assignment
1 +24 V
2 DO Open 5)
3 0 V
4 DO Closed 5)
5DI Teach in 6)
6 DI Solenoid valve 6) 7)
7 DO Fault 5)
8 Not used
SISTO-SK-i LED AS-i
Pin Assignment
1 AS-i +
2 Not used
3 AS-i -
4 Not used
5 Not used
_____________________________________________________
5) Binary output
6) Binary input
7) With integrated solenoid valve only.

15
8.6 Pneumatic installation (only for actual-position feedback unit with solenoid valve)
1.Remove the screw plug.
2.Screw the hose connectors into the respective
threaded connections on the actual-position feedback
unit.
 (Hoseconnectionsareonlyincludedinthescopeof
delivery when an actual-position feedback unit with
pneumatic valve actuator is ordered as a unit.)
3.Ensure that the threaded connections are
established properly and are leak-free.
Optional:
Replace the silencer at threaded connection point 3
with a hose connector if the exhaust air is to be
discharged via a connection line.
WARNING
Danger from pressure!
The feed line must be depressurised, bled and secured against being re-pressurised before the air supply connections are
released.
WARNING
Danger to life resulting, damage to equipment or damage to the environment from incorrect assembly!
Themountingisperformedbyqualiedspecialistpersonnelwithsuitabletools,only.
Carry out work on the SISTO-SK-i LED/SISTO-SK-i LED AS-i actual-position feedback unit during standstill only.
Prior to commissioning/start-up of the actual-position feedback unit observe the Section 9.1-9.4, Page 16.
1
2
3
Threaded
connection Assignment
1 Air supply
2 Actuator
3 Air outlet
Threaded
connections

16
9 Commissioning/Start-up/Shutdown/Removing
9.1 Commissioning the actual-position feedback unit SISTO-SK-i LED/SISTO-SK-i LED AS-i without an integrated
solenoid valve - on site
1. Verify that the electrical connections were established properly.
2. Check the supply voltage.
3. The valve actuator must be in its fail-safe position.
4. Check that the actual-position feedback unit is properly mounted on the valve actuator.
Start initialisation:
 1.Keeptheprogrammingmagnetinthemiddleofthetopofthecoverforatleast2seconds.Ifthecolourcodestartashingyellow,remove
the magnet.
2. Activate the external solenoid valve to trigger the valve actuator.
3. The actual-position feedback unit automatically detects whether the actuator is opening or closing the valve when the valve is activated.
4. The valve actuator reaches the limit position.
5. Detection of the end position is indicated by the yellow colour code of LED.
6. Deactivate the external solenoid valve to move the actuator back to its fail-safe position.
7. Limit position will be saved and signalled via colour code of LED.
Actual-position feed back unit is ready to be operated.
9.2 Commissioning the actual-position feedback unit SISTO-SK-i LED/SISTO-SK-i LED AS-i without an integrated
solenoid valve - remote initialisation
1. Verify that the electrical connections were established properly.
2. Check the supply voltage.
3. The valve actuator must be in its fail-safe position.
4. Check that the actual-position feedback unit is properly mounted on the valve actuator.
SISTO-SK-i LED procedure:
1. Start remote initialisation: Apply 24 volts to the teach-in input (pin 5) for at least 0.5 seconds.
2. Activate the external solenoid valve to trigger the valve actuator.
3. The actual-position feedback unit automatically detects whether the actuator is opening or closing the valve when the valve is activated.
4. The valve actuator reaches the limit position.
5. The actual-position feedback unit sends after three seconds a signal to pin 2 (DO Open) or pin 4 (DO Closed).
6. Deactivate the external solenoid valve to move the actuator back to its fail-safe position.
7. After three seconds a signal is sent to pin 2 (DO Open) or pin 4 (DO Closed).
 8.Thealternatingvoltageatthefaultoutput(pin7)isswitchedo󰀨.
(Table „Pin assignment“, Section 7.1, Page 7)
Actual-position feedback unit is ready to be operated.
SISTO-SK-i LED AS-i procedure:
1. Start remote initialisation: Activate DO2 via AS-i master for at least 0.5 seconds.
2. The positioner is in the initialisation mode.
3. Activate the external solenoid valve to trigger the valve actuator.
4. The actual-position feedback unit automatically detects whether the actuator is opening or closing the valve when the valve is activated.
5. The valve actuator reaches the limit position.
6. The actual-position feedback unit sends after three seconds a signal to DI0 (Open) or DI1 (Closed).
7. Deactivate the external solenoid valve to move the actuator back to its fail-safe position.
8. After three seconds a signal is sent to DI0 (Open) or DI1 (Closed).
 9.Thealternatingvoltageatthefaultoutput(DI3)isswitchedo󰀨.
(Table „Inputs and Outputs“, Section 7.5, Page 10)
Actual-position feedback unit is ready to be operated.

17
9.3 Commissioning the actual-position feedback unit SISTO-SK-i LED/SISTO-SK-i LED AS-i with an integrated
solenoid valve - on site
1. Verify that the electrical and pneumatic connections were established properly.
2. Check the supply voltage and the control pressure present.
3. Check that the actual-position feedback unit is properly mounted on the valve actuator.
Start initialisation:
1. Keep the programming magnet in the middle of the top of the cover for at least 2 seconds. If the colour code start ashing yellow,
remove the magnet again.
2. The Actual-position feedback unit switches the internal solenoid valve, reaches the both limit positions and saves them internally.
3. Limit position will be saved and signalled via colour code of LED. (Table “Colour code of high-visibility LED“, Section 7.1, Page 7)
Actual-position feedback unit is ready to be operated.
9.4 Commissioning the actual-position feedback unit SISTO-SK-i LED/SISTO-SK-i LED AS-i with an integrated
solenoid valve - remote initialisation
1. Verify that the electrical and pneumatic connections were established properly.
2. Check the supply voltage and the control pressure present.
3. Check that the actual-position feedback unit is properly mounted on the valve actuator.
SISTO-SK-i LED procedure:
1. Start remote initialisation: Apply 24 volts to the teach-in input (pin 5) for at least 0.5 seconds.
2. The actual-position feedback unit actuates the internal solenoid valve, reaches the both limit positions and saves them internally.
3. A signal is present at pin 2 (DO Open) or pin 4 (DO Closed).
4. No voltage is present at pin 7 (DO Fault).
(Table „Pin assignment“, Section 7.1, Page 7)
Actual-position feedback unit is ready to be operated.
SISTO-SK-i LED AS-i procedure:
1. Start remote initialisation: Activate DO2 via AS-i master for at least 0.5 seconds.
2. The actual-position feedback unit actuates the internal solenoid valve, reaches the both limit positions and saves them internally.
3. A signal is present at DI0 (Open) or DI1 (Closed).
4. No voltage is present at fault output (DI3).
(Table „Inputs and Outputs“, Section 7.5, Page 10)
Actual-position feedback unit is ready to be operated.
9.5 Reset of the actual-position feedback unit to factory setting
• Keep the programming magnet in the middle of the top of the cover for 30 seconds.
• NotinitializedoperatingstatusisindicatedbythebluecolourcodeofLED.
9.6 Shutdown
WARNING
Risk of injury!
Carry out work on the SISTO-SK-i LED/SISTO-SK-i LED AS-i actual-position feedback unit during standstill only.
ATTENTION
Theinstallationbeperformedbyskilledandtrainedpersonnel.Always use suitable tools to ensure proper functioning of the actual-
position feedback unit.
NOTE
All applicable accident prevention, health and safety regulations must be observed when working on electrical equipment.
Measures for shutdown:
▪ Beforeinterventioninthesystem:
1. The system must be de-energised.
2. Secure against restart.
3. Check that no voltages are present.
• Before the air supply connections are released:
1. Feed line must be depressurised.
2. Feed line bleed.
3. Feed line secure against being re-pressurised.
9.7 Removing the actual-position feedback unit
The actual-position feedback unit is dismantled in reverse order.

10 Trouble shooting
10.1 Error messages/operating status SISTO-SK-i LED/SISTO-SK-i LED AS-i
18
High visibility-LED Output
signal
Blue Yellow Red Orange Green DO Open DO Closed DO Fault
Fault/
Operating status Trouble shooting/ Note
No power supply. • Check power supply.
-• Reinitialise
Ready for initialisation. -
Initialisation (Movement in the opening
direction) -
Initialisation
(Reached open position) -
    Initialisation
(Movement in the closing direction) -
Initialisation
(Reached closed position) -
Operation
(Movement in the opening direction) -
  Operation
(Reached open position) -
Operation
(Movement in the closing direction) -
Operation
(Reached closed position) -
   Fault
(all positions)
• Limit position not reached
• Check stroke
• Reinitialise
    Fault limit position open
(limit position does not match the status of
the integrated solenoid valve).
• Checkcompressed-airsupply
• Checkvalveformechanicalblockage
  Fault limit position closed
(limit position does not match the status of
the integrated solenoid valve).
• Checkcompressed-airsupply
• Checkvalveformechanicalblockage
    Fault
(all positions)
• Fault in system
• Sendinactual-positionfeedbackunit
to manufacturer.
Symbol Description
O󰀨
On
Flashing
Undened

10.2 Additional error messages/operating status SISTO-SK-i LED AS-i
LED
AS-i Power AS-i Fault
Fault/
Operating status Trouble shooting/ Note
  No operating voltage • No operating voltage is available.
Normal operation • Data communication is established.
  No data exchange
• Thedata-exchange-disable-agisset.
• Data port communication is not allowed.
• IC is waiting for a write-parameter-request.
• The communication monitor has detected „No data exchange
status“ or the IC was reset by watchdog reset.
No data exchange (address=0) • Slave is waiting for address assignment.
• Data port communication is not possible.
  Peripheral fault • Signal of peripheral fault generated at FID input.
Worse Peripheral fault with reset. • „Data Strobe“ driven LOW for more than 44µs.
19
Symbol Description
O󰀨
On
Flashing
Operating status Colour code of LED
AS-i Power Green
AS-i Fault Red
11 Maintenance/Cleaning
TheSISTO-SK-iLED/SISTO-SK-iLEDAS-iactual-positionfeedbackunitwasdesignedtobemaintenance-free.However,checkallelectrical
and pneumatic connections at regular intervals.
ATTENTION
The unit must never be cleaned with a water jet and/or aggressive cleaning agents (observe the requirements of the type of
enclosure Section 7.2, Page 8/Section 7.4, Page 10).
Please contact SISTO Armaturen beforehand should any doubt arise as to the compatibility of the cleaning agent with the
housing material.

198-LVK-09/5-90
SISTO Armaturen S.A.
18, rue Martin Maas
L-6468 Echternach /Luxembourg
Tel.: [phone] Fax:[phone]
Maschinenrichtlinie 2006/42/EG
Einbauerklärung entsprechend Anhang IIB
Hersteller, Adresse: SISTO Armaturen S.A.
18, rue Martin Maas
L-6468 Echternach/Luxembourg
Beschreibung der unvollständigen Maschine:
Stellungsrückmelder Typ SK-i LED oder Stellungsrückmelder SK-i LED AS-i, vorgesehen zum
Aufbau auf lineare pneumatische Ventilantriebe.
Im Einklang mit folgenden angewendeten grundlegenden Anforderungen:
1.1.2, 1.1.3, 1.1.4, 1.1.5, 1.1.6, 1.2.1, 1.2.2, 1.2.3, 1.3.2, 1.3.3, 1.3.4, 1.3.7, 1.3.8, 1.3.8.1, 1.4.1 1.4.2.1,
1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.7, 1.5.8, 1.6.1, 1.6.3, 1.6.4, 1.7.1.1, 1.7.1.2, 1.7.2, 1.7.4, 1.7.4.1, 1.7.4.2
Die technische Dokumentation wurde erstellt in Übereinstimmung mit Anhang VII, Teil B.
Andere anwendbare Richtlinien:
•EMC Directive 2014/30/EU / EMV-Richtlinie 2014/30/EU
•RoHS Directive 2011/65/EU / RoHS-Richtlinie 2011/65/EU
Hinweis: Die unvollständige Maschine, die Gegenstand der vorliegenden Einbauerklärung ist, darf erst dann
in Betrieb genommen werden, wenn die Maschine, in die sie eingebaut wird, die Anforderungen der Richtlinie
2006/42/EG erfüllt.
Machinery Directive 2006/42/EC
Declaration of incorporation according to annexe IIB
Manufacturer, address: SISTO Armaturen S.A.
18, rue Martin Maas
L-6468 Echternach/Luxembourg
Description of the partly completed machinery:
Actual-position feedback unit type SK-i LED or actual-position feedback unit type SK-i LED AS-i,
intended for mounting on linear pneumatic valve actuators.
In accordance with the following essential requirements applied:
1.1.2, 1.1.3, 1.1.4, 1.1.5, 1.1.6, 1.2.1, 1.2.2, 1.2.3, 1.3.2, 1.3.3, 1.3.4, 1.3.7, 1.3.8, 1.3.8.1, 1.4.1 1.4.2.1,
1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.7, 1.5.8, 1.6.1, 1.6.3, 1.6.4, 1.7.1.1, 1.7.1.2, 1.7.2, 1.7.4, 1.7.4.1, 1.7.4.2
The technical documentation has been prepared in accordance with appendix VII, section B.
Other applicable directives /
•EMC Directive 2014/30/EU / EMV-Richtlinie 2014/30/EU
•RoHS Directive 2011/65/EU / RoHS-Richtlinie 2011/65/EU
Note:This partly completed machinery covered by this declaration may not be put into service until the
machine into which it is installed complies with the requirements of Machinery Directive 2006/42/EC.
BerndHackenberger Echternach, 26.11.2020
HeadofDesignand Development