new si 2.1 presentation

7/25/2019 New SI 2.1 Presentation

http://slidepdf.com/reader/full/new-si-21-presentation 1/43

RFS SI 2.1Actuator July 2015

Presented by:Andy Hurst



Rotork Fluidsystems

Skilmatic SI 2 Actuators

Range of Electric Spring Return Actuators suitable forSutdo!n applications



SI 2 Principles of "peration

Features

• Self contained electrically operated actuator, only needs power andsignal connections

• Fail Safe !Spring "eturn, truest means of fail safe re#uirement

• $wo position or analogue %ontrol wit& additional 'S( signal

• )artial Stroking capa*ility, reduces maintenance re#uirements

•

+etwork communications wit& additional &ardware 'S( options• 'plosion proof - watertig&t up to I)./




enets

• "educed installation- maintenance costs

• ost relia*le means of positioning a 3al3e to a safe position on loss ofpower4signal

• (esigned to meet safety critical application re#uirements

• )artial Stroking %onrms 3al3e is a3aila*le - assists wit& minimising

plant s&utdown times• $otally sealed system

• Interfaces wit& a wide range control systems




Self contained Electro#ydraulic control module

Spring return # Fail Safe

Simple lo! pressure $ydraulic pump % bleed system



SI 2 Principle of "peration

)ower nit %omponents

otor4Solenoid'nclosure

Hydraulic 'nclosure %6w)ump, c&eck 3al3e andpressure relief 3al3e

'lectronics 'nclosure%6w ain *oard, )ower

*oard and pressuretransducer

$erminal'nclosure





otor

"otary )umpAssem*ly

)ressure "elief 3al3e

%&eck 7al3e

)ressure $ransmitter

)ower circuit*oard

ain circuit *oard

8ocal %ontrols




Hydraulic circuit

Actuator at &losed limit $&e *y9pass :Solenoid +o1 normallyopen; solenoid 3al3e, *leed :solenoid+o2 - < normally open; solenoid3al3e:s;, and motor dri3en rotary 3anepump are de9energised

$&ere is no &ydraulic system pressureItem

'escription

1 Filters

2 )ressure $ransducer

< +ormally =pen leed Solenoid ! Solenoid 3al3es +os2 - <

> )ressure "elief 7al3e set to 1?5 )SI

5 +ormally =pen Solenoid 7al3e ! y9pass Solenoid +o1

. %&eck 7al3e? otor

/ "otary 7ane )ump

@ Spring "eturn Actuator




Hydraulic %ircuit

Actuator commanded to =pen from t&e %losedlimit $&e *leed solenoid 3al3e:s;, and motor areenergised $&e oil is circulated t&roug& t&e *y9passsolenoid 3al3e wit&out generating any systempressure for 05 seconds, w&ic& allows t&e motorto reac& operating speed $&e *y9pass solenoid3al3e is t&en energised :closes; $&e oil pressure generated acts against a springopposed piston in t&e actuator dri3e =nce t&e oilpressure is sucient to o3ercome t&e spring, t&episton will mo3e, w&ic& in turn will open t&eactuator





otor

"otary )umpAssem*ly

)ressure "elief 3al3e

%&eck 7al3e

)ressure $ransmitter

)ower circuit*oard

ain circuit *oard

8ocal %ontrols




Hydraulic %ircuit

Actuator commanded to Stop or it reaches the Open

limit

The by-pass solenoid valve is de-energised (opened).

The motor is de-energised after 5 seconds, unless a new

command to open is given. If the actuator is commanded

to open within 5 seconds (before the motor is de-

energised), then the by-pass solenoid valve is energised

again.The oil pressure is maintained by the bleed solenoid

valve(s), pressure relief valve, non-return valve remaining

closed and the spring opposed piston in the actuator

drive.




Hydraulic %ircuit

• Actuator commanded to &lose from te "pen limit

• $&e *leed solenoid 3al3e:s; are de9energised :opened;• $&e oil pressure is releasedB once t&e spring force is sucient to o3ercome t&e oil pressure acting

on t&e piston t&en it will mo3e *y returning oil t&roug& t&e open *leed solenoid 3al3es, w&ic& in turnwill close t&e actuator

•

• Actuator commanded to Stop before it reaces te &losed (imit

• $&e *leed solenoid 3al3e:s; are energised and actuator tra3el will stop and position maintained *yt&e energised solenoids and t&e c&eck 3al3e

• • Actuator commanded to "pen from a mid tra)el position

• $&e motor is energised $&e oil is circulated t&roug& t&e *y9pass solenoid 3al3e wit&out generatingany system pressure for 05 seconds, w&ic& allows t&e motor to reac& operating speed andpre3enting a motor stall $&e *y9pass solenoid 3al3e is t&en energised and t&e actuator will tra3el tot&e open limit

•

• Actuator commanded to "pen !ile &losing

• $&e *leed solenoid 3al3e:s;, and motor are energised $&e oil is circulated t&roug& t&e *y9passsolenoid 3al3e wit&out generating any system pressure for 05 seconds, w&ic& allows t&e motor toreac& operating speed and pre3ent a motor stall $&e *y9pass solenoid 3al3e is t&en energised andt&e actuator will mo3e to t&e open limit




Diring (iagram




enu Structure




)rimary Settings

00] [

P?

Password

Crossroad Secondary Settings

C2Close Action

C3Open Action

CPClose Pressure (Limit)

cPClose Pressure (Mid)

LC

Closed Limit (Manual)

LO

Open Limit (Manual)

OPOpen Pressure (Limit)

oPOpen Pressure (Mid)

PT

Partial Stroke Test

PC

Password Change

Ir

IrDA !luetooth

PPActuator "e#erence Pro#ile




Secondary Settings

Crossroad

rP

"emote Priorit$

HP

%old Posiiton

LH

Limit %$steresis

OHO&er pressure h$steresis

UH'nder pressure h$steresis

dd

Minimum Demand (

HC

%$steresis Closing

HO

%$steresis Opening

FH

Set Demand Open

Sc (CL)

Set CPT Closed

SC (OP)

Set CPT Open

FF

Analogue Alarm

Pd

Partial Stroke Duration

PS

Partial Stroke Inter&al

!

)SD Action

O)SD Local Stop O&erride

c

)SD Contact T$pe

r)SD Manual "eset

Un

So#tware *ersion

UI

Option *ersion

Ur

"eset

r2

Contact +unction

r2

*alue

r2

Contact +orm

r3

Contact +unction

r3

*alue

r3

Contact +orm

r"

Contact +unction

r"

*alue

r"

Contact +orm

dC

Dead,and Closing

OC

Option Card

cLCon#igure Local Controls

rS

"emote Select

FImA *oltage Analogue Input

LP

Low Power

tL

Test Lights +unction

Ld

Closed L)D Colour

UL

Language

CF

Con#irm #aults

UP

Ser&ice Password

O#

I- Timer )na,led

#C

I- Timer Start . Open

#O

I- Timer Stop . Open

#nI- Timer On Time

#FI- Timer O## Time

Contact r2

Contact r3

Contact r"

$enera% Settings

&igita% Contro%

S& ' Partia% Stroe

!na%oge Contro% *

Ser+ice ,ode

dO

Dead,and Opening

FC

+low Characterisation

FL

Set Demand Closed

!na%oge Contro% 2

t

)SD Temp signal loss

SL

Slow Mode !and Ad/ust

Co

CPT Output

#&

I- Timer Direction

#S

I- Timer Inter&al

#

I- Timer on )SDInterr-ter Ti.er

SP

Set.up Partial Stroke




'lectronics Features

• *on#intrusi)e setting

9 Dit& "otork infra red 6 luetoot& settingtool

setting tool

9 All 3alues are &eld in '')"= to maintainsettings in memory on power failure

: +o *attery *ack9up;

• (&' 'isplay

9 )osition and )ressure Indication

9 (ual (isplay wit& <2 c&aracter tet

9 ultilingual tet capa*ility :consultfactory;

9 'asy set9up

• (E'+s

9 $o indicate limits and intermediatestate




'lectronics ain Features

Semi#Automatic Position (imit &alibration $&e met&od of cali*ration will re#uire t&e mec&anical limit to *e set *ut t&e electrical limits will *e set

*y t&e software $&e software will calculate t&e electrical limits from t&e o3erall span *etween t&emec&anical limits

,anual ")erride 'etection S&ould a manual o3erride *e installed t&e actuator can detect and alarm if t&e actuator is not at t&e fail

!safe position w&en re9powered after a s&utdown

Partial Stroking• %onrming t&e actuator and 3al3e are a3aila*le to s&utdown if re#uired

• "educes num*er of s&utdowns re#uired for maintenance testing- Allows testing of Isolating 7al3es wit&out eEecting t&e process

- $ests all components in t&e system, including t&e 7al3e

- $&e partial stroking is adusta*le from 0 to @@G of stroke (efault is set at 5G of stroke from t&e openlimit

SI 2 P i i l f " i





,anual Reset An optional 'S( manual reset can *e ena*led to restrict t&e actuator from operating until locally reset

at t&e actuator t&roug& t&e local controls or t&roug& an eternaly mounted switc&

Pressure 'isplay

$&e pressure can *e s&own as eit&eractual readings :*ar 6 psi; or as a G ofmaimum pressure

-est 'isplay (igts

$&is will switc& on all t&e displaysegments 6 dots and icons as well as t&e8'( for < seconds $&e 8'( will switc&*etween red, yellow and green duringt&is time period






Position ,aintenance $&is setting will monitor t&e position of t&e actuator w&en commanded to stop, it will position t&e

actuator to maintain t&at position$old limit Pressure $ysteresis Separate &ysteresis adustment for *ot& o3er pressure and under pressure are include

! $&ermal epansion compensation

Staggered Solenoid /al)e S!itcing If an actuator is to *e used for isolating duty, t&en se3eral solenoid 3al3es could *e tted to reduce t&e

closing time In t&is type of application t&e response time to open t&e actuator is not particularlyimportant so t&e solenoid 3al3es could *e energised one after t&e ot&er to reduce t&e in9rus& current

SI 2 P i i l f " ti




Actuators

"emote %ontrol ActuatorSpring "eturn "%2.0,.1,?0 -/0 siesScotc& oke (esign Spring Assem*ly

Scotc& oke

)iston assem*ly

Hig& pressure :12

ar; =il lled

8ow pressure=il lled to maintain le3el in

&ydraulic reser3oir, creatinga sealed system





Actuators

• K) Actuator

• Scotc& oke• Spring "eturn

Springassem*ly

Scotc& okeAssem*ly

Hig& )ressure12 ar

8ow )ressure, =illled to maintainle3el in &ydraulicreser3oir

ec&anical end stopadustment, =penlimit

ec&anical endstop adustment,%losed limit





Actuator

$or#ue re#uirementsL

As seen in t&e pre3ious slide, an actuator &as to generate a t&rust or tor#ue to open orclose a 3al3e

7al3e tor#ue can *e *roken down into . distinct stroke momentsL

1; reak $o =pen tor#ue :also called nseating, or reakaway tor#ue;

$&is is t&e moment w&en t&e 3al3e is fully closed and *egins to open and is t&e

maimum moment of tor#ue along stroke for most #uarter turn 3al3es2; "un $o =pen tor#ue :"unning; $&is is t&e intermediate part of t&e stroke $or#uere#uirement is lowest during t&is part of t&e stroke due to low dynamic friction andreduced ()

<; 'nd $o =pen tor#ue w&ere t&e 3al3e reac&es its fully open position

>; reak $o %lose $&is is t&e moment in w&ic& t&e 3al3e starts mo3ing from a fully openposition *ack towards t&e closed position

5; "un $o %lose tor#ue :"unning; as t&e "un $o =pen.; 'nd $o %lose tor#ue :also called Seating or "eseating tor#ue; () is &ig&, as *y closingt&e 3al3e we once more &a3e &ig&er pressure upstream t&an downstream of t&e 3al3e





Actuator

• &entral 0ody

•

$&e scotc& yoke mec&anism con3erts t&e linear t&rust produced *y a piston cylinder or a spring intotor#ue suita*le to operate a #uarter turn 3al3e

• $&e scotc&9yoke mec&anism is &oused in a perfectly sealed &ousing, t&e %entre *ody

• $&is Scotc& yoke can rotate in an arc of 0 to @0M ena*ling t&e 3al3e to mo3e from fully opened to fullyclosed and 3ice 3ersa

• $&e mec&anical gain of t&e actuator, or arm is t&e distance measured from t&e centreline of t&ecylinder to t&e yoke pin

A r m

a t 1 2 3

45°

-e yoke !en positioned at 3de4nes te actuator si5e i.e: 67means tat te distance bet!eente piston rod and yoke centre is7mm. So fort for te 1869 169

etc. arm types in te RotorkRange.





Actuator

• Symmetrical Scotc ;oke

• $&e ais of t&e yoke slot is perpendicular to t&e piston rod ais w&en t&e yoke is at >5M or &alf wayduring t&e stroke

• $&e scotc& yoke arm :t&e distance *etween centre point of yoke pin and sliding *lock; at 0M is e#ual tot&at at @0M

Symmetrical-or<ue deli)ery peaks at bot

ends of te stroke

- o r < u e

Strok e

Valve TorqueSignature

ActuatorTorque

Signature





Actuator Spring %onstruction

• $&e spring canister on an actuator guarantees a return stroke for eit&er a fail open or fail closeapplication actuator

$&e spring generates t&e necessary force to open or close a 3al3e wit&out needing a dou*le actingcylinder 8inear t&rust to rotation

elow is a spring canister wit& two springs packed in tandem :in series; =t&er actuator types use asingle spring or &a3e nested springs :internal; wit&in *igger diameter springs to guarantee a certainforce

$&e &ead and tail Nange are welded directly to t&e canister after t&e spring is positioned internally

SpringSpring

$ailFlange

HeadFlange

StopScrew

)iston"od

Springt&rust plate

Sprin

g

Sprin

g

Spring

%anister

$ailFlange

HeadFlange

StopScrew

)iston"od

Spring

t&rust plate





Actuator Hydraulic %ylinder

$&e ydraulic cylinder on an actuator produces linear force generated from &ydraulic Nuid at a

dened pressure t&at pus&es t&e piston in turn mo3ing a piston rod $&e tail Nange is kept in place and secured 3ia tie rods and *olts

• 8inear t&rust to $or#ue

• )iston

Hydraulic %ylinder

StopScrew

)iston rod

HeadFlange

$ailFlange

$ie "od





Actuator

• A single acting actuator is responsi*le for only one stroke of t&e 3al3eL eit&er t&e opening stroke or t&e

closing stroke

• =nly one of t&e two c&am*ers is used for pneumatic6&ydraulic Nuid $&e return stroke is carried out *y

a spring situated in a dedicated canister located opposite to t&e cylinder

• Ideal for fail safe applications

A single acting actuator isdescri*ed as eit&er Ofailopen or Ofail closeL

Fail "pen9 loss of Nuidpower, t&e springautomatically opens t&e3al3e

Fail &lose9 loss of Nuidpower, t&e spring

automatically closes t&e3al3e





Actuator 9 8inear

A 8inear Actuator produces a lineart&rust and is used for gate 3al3es,sluice, control 3al3es etc

%onstruction is relati3ely simple andcan *e compared to mounting apneumatic or &ydraulic cylinder3ertically on a spool piece

$&e actuator is mounted 3ertically on

t&e 3al3e producing an Oup and downmotion

$&ese can *e e#uipped wit& a springfor Ofail safe closure, also referred toas eit&er Ospring up or Ospring downdepending on &ow t&e 3al3e is used

$ydraulicLup to 12 *ar

Spring"eturn

(ou*leActing





Switc& o arrangement

)otentiometer, *etween 1kand 5kPsed for feed*ack into t&eelectronics to conrm

actuator position)re9dened limits to ensurefor operational range, 05 to@5+oteL Switc& *o typemay*e diEerent fromdisplayed




S c p e o "pe a o

%ommon Faults

• P" Position sensor Fault

• $&is fault indicates t&at t&e ain )% &as detected an out of range position 3alue:*etween 00 9 05 and @5 ! @@;, and t&erefore is eit&er due to a )%, wiring, or anactual fault wit& t&e )osition Sensor

• dr Solenoid 'ri)er Fault

• A Solenoid dri3er fault can =+8J occur on a unit tted wit& a (% )ower )% :2>7dcor t&ree p&ase actuators;, and is caused *y an open circuit on t&e solenoid 3al3eoutput w&en t&e controller is trying to energise it

• Pr Pressure Sensor Fault• $&is fault indicates t&at t&e ain )% &as detected a )ressure Sensor fault,

and t&erefore is eit&er due to a wiring fault, or an actual fault wit& t&e)ressure Sensor

•




p p

%ommon Faults

• "P ")er Pressure in ,id -ra)el

• $&is fault indicates t&at t&e actuator &as *een stopped *ecause t&e pressuregenerated &as reac&ed t&e cut9oE 3alue $&is could *e caused *y eit&er t&e tor#ue6 t&rust of t&e actuator is not sucient to o3ercome t&e 3al3e re#uirements, t&ereis a *lockage in t&e 3al3e 6 pipe work or t&e mec&anical end stop of t&e actuator or3al3e &as *een reac&ed *efore t&e open limit or t&at t&e pressure trip setting &as*een adFusted to a lower le3el t&an will allow t&e actuator to function correctly

• =P =nder Pressure in ,id -ra)el

•

$&is fault indicates t&at t&e actuator &as *een stopped and t&e pump operationin&i*ited as t&e pressure *eing generated &as not *een sucient to mo3e t&eactuator

• St Actuator Stalled in ,id -ra)el

• $&is fault indicates t&at t&e actuator eit&er &asnHt started to mo3e or &as stoppedmo3ing w&en it &as *een commanded to in eit&er t&e open or closed direction,wit& t&is fault appearing after t&e preset stall time &as epired




p p

luetoot& %onnecti3ity

• tilises "otork +on9Intrusi3e setting tool

• %an connect wit& eit&er Infra9red of luetoot&• ses Insig&t 2 for (ata log download

• Insig&t 2 used as a maintenance tool to re3iew operational data




p p

aintenance $ools 9 Insig&t 2

• luetoot& setting tool can *e used to download t&e conguration and data log lesfrom t&e actuator, *efore transferring to a luetoot& ena*led )% running Insig&t 2




aintenance $ool ! Insig&t 2

$o connect to an actuator t&e download *utton is &eld down and a3aila*leluetoot& ena*led actuators will *e registered *y t&e setting tool

$&e user can t&en cycle around all t&e actuators in range

:)otentially 10 metres;





$&e setting tool can t&en *e connected to a )% *y placing it into a disco3era*lemode *y pressing t&e return and download keys at t&e same time

D&en connected all missions, conguration and data logger les can *e seent&roug& Insig&t II





$&e conguration settings can t&en *e 3iewed, or c&anged if re#uired anddownloaded *ack to an actuator 3ia a mission





If a pre3iously stored conguration le or rmware le is dragged to a connectedsetting tool t&e a*ility to setup a mission is oEered t&at will allow t&e setting toolto program t&e le into all, or specic actuators





An '3ent log can *e displayed 9

7arious formats including a discrete list for eac& e3ent to a grap&ical 3iewo3er time





$&e last 102> e3ents will *e recorded on <2 *its of status for eac& e3ent alongwit& analogue traces for demand, position and pressure





'ac& conguration le can *e sa3ed on a )% for arc&i3ing w&en re#uired



>2



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new si 2.1 presentation

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