Single Loop Controller YS1000 Series
Contents
1. Communication RDB Direct input 1 Direct input 1 1 TS Analog input 1 5 PV D PV1 D PV1 1 y PV1 i PV1 PV1 2 1 7 1 5V DC 7 1 5V DC 7 1 5V DC 7 1 5V DC 2 1 7 1 5V DC 7 1 5V DC 7 1 5V DC oE gt Analog input 2 Cascade set point input Cascade set point input b Cascade set point input 1 i PV2 T gt Cascade set point input Cascade input 4 1 7 1 5V DC 7 1 5V DC 7 1 5V DC 7 1 5V DC 4 1 7 1 5V DC 7 1 5V DC 7 1 5V DC Analog input 3 gt Tracking input le PV2 PV2 5 6 1 7 1 5V DC 1 5V DC 7 1 5 7 1 5V DC 6 i 5 Analog input 4 gt Feedforward input TA Feedforward input S Cascade set point input 2 7 8 1 7 1 5V DC 1 5V DC 7 1 5V DC 7 1 5V DC 8 9 Analog input 5 Direct input signal Direct input signal Direct input signal 9 d Direct input signal Direct input signal Direct input signal gt gt gt gt gt gt 10 1 5V DC output 1 output 1 output 1 o output 1 output 1 output 1 M Fail output Fail output Fail output Fail output Fail output Fail output Fail output gt gt yy gt Re gt gt 13 Transmitter Power supply 24V DC Transmitter Power supply 24V DC Transmitter Power supply 24V DC Transmitter Power supply 24V DC Transmitter Power supply 24V DC Transmitter Power supply 24V DC2. Passwords can be assigned to user programs to prevent unauthorized access to proprietary programs password on the main unit prevents unexpected changes in the engineering parameters Backwards compatible with existing programs Conversion software for existing YS170 user programs is available Backwards compatible with existing programs Conversion tool for importing programs from YS80 SLPC ROM is available PROGRAM COMMENT L SD O0 d O ON oe Go BI Backwards compatible with existing YS170 users programs Increased programming capacity allows you to create more sophisitated control schemes Full set of computation functions Supports parameter setting for all YS1000 models Support for YS1700 custom programming Calculations done using Engineering units and Floating point math Includes over one hundred computation modules for exponents logarithms temperature pressure correction and other operations Function blocks sub programs can be saved and reused Calibration tool Following the YSS1000 s online calibration instructions makes calibration easy Calibration records and data can be saved on the YS1000 allowing you to load or print past calibration data as needed under development Inquire for release shipping dates Control output backup function The control output backup function comes standard with YS1000 series controllers YS1700 and YS1500 and the
3. Transmitter Power supply 24V DC Communication SG Communication SDA Communication SDB Communication RDA or LCS Communication RDB or LCS Direct input 1 5 MV1 4 20mA DC 2d Analog output 2 ag MV2 d MV2 gt SV a 3 MV2 25 1 5V DC 7 1 5V DC 1 5V DC 7 1 5V DC 1 5V DC 26 b Analog output 3 gt SV SV 27 4 20mA DC 1 5V DC 7 1 5V DC 7 1 5V DC ele Degital output 1 or 7 Degital input 6 gt First loop alarm output gt First loop alarm output gt PV1 high limit alarm 7 output D PV1 high limit alarm 7 output Ground GND Ground GND 1 Only applicable for YS100 compatible terminal type 2 4 5 Ground GND Ground GND YS1000 Series Basic Type Terminal Block Our product names or brand names mentioned in this manual are the trademarks or registered trademarks of YOKOGAWA Electric Corporation hereinafter referred to as YOKOGAWA e Microsoft MS DOS Windows Windows XP and Windows NT are either registered trademarks or trademarks of Microsoft Corporation in the United States and or other countries e Ethernet is a registered trademark of XEROX Corporation We do not use the TM or r mark to indicate these trademarks or registered trademarks in this user s manual All other product names mentio
4. 2 J 2 J 2 2 1 Can be added only for basic type when selecting type 0 or 1 2 Can be added only for compatible type for YS100 when selecting type 2 4 and 5 3 Cannot be combined with type 3 4 For basic type with expandable I O only when selecting type 1 5 A31 and A32 cannot be specified together 6 Under development YS1000 Series Line up YS1 500 Indicating Controller Incorporates fundamental control functions required for PID control Necessary functions can be selected in accordance with the user s purpose The available functions include those necessary for input signal processing such as square root extraction and linear segment conversion and feed forward calculation Cascade and auto selector control is also possible YS1 70 O Programmable Indicating Controller A programmable controller in which control and computational functions are combined by the user with the YSS1000 programming tool Each YS1700 can run two PID control calculations simultaneously and output the respective 4 20 mA output signals The YS1700 can also be used as a multi function controller without programming in the same way as the Model 1500 Controller mode Control type Controller mode Control type Programmable Multi function mode single loop cascade and auto selector single loop cascade and auto selector Basic PID control built in nonl
5. Loops color coded for easy identification DUAL Display Ideal for 2 element control such as cascade or selector control Maintains good visibility even on panels subject to direct morning and evening sunlight 3955 comme C2 pe Tea gt TOGA Under indoor fluorescent lighting Exposure to Sunlight Note Avoid constant exposure to sunlight as this can shorten the lifespan of the LCD display Provides for greater freedom of instrumentation design Compact lightweight design allows the use of 250mm 1 6kg YS1 00 320mm 3 4kg smaller and less expensive panel Moreover it T I allows attachment to doors which was previously YS80 480mm 6kg difficult T ij NP a Reduction of engineering costs YEE INM YS1000 Configuration and Programming Software Se OO Your Choice of Programming Style Graphical or Text Based New Graphic Programming Tool Programming is easier with our intuitive function block programming The online module monitoring function allows you to confirm the performance while programming Three connection modes YIT Connection modes USB Ethernet or RS485 Ethernet When connecting via RS485 or communications Ethernet a communication option is required on the main unit 1 7 Daas Configuration and Programming Software YSS1000 Dedicated USB cable communication Password protection function
6. both input and output pine Programable function key eon With a user program the program function key PF key on the instruments front panel can be used as an ON OFF switch for self tuning or as a Start button for sequence operation momo a I EBS 2 Housing 1 Compatibility is established by inserting the YS1000 s internal circuitry of the appropriate compatible type into the existing case 2 Compatibility is established by inserting the entire YS1000 unit of the appropriate compatible type into the existing controller housing Order the housing separately as needed instruments without modifying existing instrumentation panels Moreover front panel design with analog like meters lets you update to new instruments without losing the familiarity of the old interface 100line 2 Housing YS80 YS1000 Housing Ale Setpoint filter SVF a Can optimize tracking with changes in set points Also can maintain optimum responsiveness to disturbances At disturbance A optimum responsiveness to disturbances At set point change PV without SVF Set point A optimize tracking with changes in set points Direct input function An optional signal conversion function can be added for 1 channel Current voltage pulse thermocouples RTDs mV and potentiometers signals from differential pressure gauges manometers and flow meters can be connected directly to the control
7. digital input as backlight off and one FAIL contact High low high high low low limits Input computation Square root with low signal cut off first order lag calculation Protection by password Alarm functions Security Trend display Communication Modbus TCP RS 485 modbus and DCS LCS Analog input 1 to 5 V DC 2 channels Analog output 1 to 5 V DC 1 channel Digital signal Two input three outputs and one FAIL contact Alarm functions High low limits Input computation Square root with low signal cut off Security Protection by password Trend display Communication Modbus TCP RS 485 modbus and DCS LCS Analog input 1 to 5 V DC 2 channels Analog output 4 to 20 mA 1 channel and 1 to 5 V DC 1 channel Digital signal Two input three outputs and one FAIL contact Alarm functions High low limits Input computation Square root with low signal cut off Security Protection by password Trend display Communication Modbus TCP RS 485 modbus and DCS LCS Hardmanual Yes standard 10 When a YS1700 YS1500 or YS1360 requires maintenance the YS110 Portable Manual Station can be used to output a 4 20 ma signal to the final control element Simply swing up the front panel of the controller connect this unit to the controller and replace the internal assembly while keeping the existing manipulated output active Input signal Manipulation signal Input manipulation signal meters Output
8. manipulation I O connection Models to be backed up 1 to 5 V DC 1 channel 4 to 20 mA DC 1 channel Moving coil method Range 0 to 100 Scaling 20 equal divisions Manual using the front panel dials I Os are coupled with the connector on the case using a dedicated cable YS1700 YS1500 YS1360 Terminal Block YS1700 YS1500 Terminal Arrangements YS1310 YS1350 YS1360 Terminal Arrangements Communication SG Communication SG Communication SDA Communication SDB Communication SDA Communication SDB Communication RDA or LCS Communication RDB or LCS Communication RDA or LCS Communication RDB or LCS F T Direct input 1 i Direct input 1 Communication SG Communication SG Communication SDA Communication SDB Communication RDA or LCS Communication RDB or LCS T F Direct input 1 Direct input 1 Communication SDA Communication SDB Communication RDA or LCS Communication RDB or LCS Analog output 1 gt MV1 ele gt MV1 El MV1 4 20mA DC 7 4 20mA DC 7 4 20mA DC 7 4 20mA DC Communication SG Communication SG Communication SDA Communication SDA Communication SDB Communication RDA or LCS Communication RDB or LCS Communication SDB Communication RDA
9. mode switching 39 Degital input 1 input input input 7 or Degital input 1 input 7 input gt Power supply gt Power supply gt Power supply Power supply gt Power supply gt Power supply gt Power supply Ground GND 11 Main Unit Dimensions YS1000 Basic Type 56 Note 1 Instrument panel thickness 2 3 to 25 mm Clamp bracket 144 _ Clamp bracket A 250 Expandable I O Cable Dimensions lengfh 30 3cm 300 5cm A Yokogawa Commitment to Industry vigilance YOKOGAWA CORPORATION OF AMERICA 2 Dart Road Newnan Georgia 30265 U S A Phone 800 447 9656 Fax 1 770 251 6427 YOKOGAWA EUROPE B V Databankweg 20 3821 AL Amersfoort THE NETHERLANDS Phone 31 33 4641806 Fax 31 33 4641807 YOKOGAWA ENGINEERING ASIA PTE LTD 5 Bedok South Road Singapore 469270 Phone 65 62419933 Fax 65 62412606 YOKOGAWA ELECTRIC CORPORATION Network Solutions Business Division 2 9 32 Nakacho Musashino shi Tokyo 180 8750 Japan Phone 81 422 52 7179 Fax 81 422 52 6619 E mail ns cs jp yokogawa com Subject to change without notice All Rights Reserved Copyright 2007 Yokogawa Electric Corporation Panel Cutout Width Panel Cutout Width for For single mounting For side by side mounting Side by side Mounting 0 7 1 Number of 68 9 L o
10. 0 series 1 O accuracy Voltage input accuracy 0 2 0 1 Voltage output accuracy 0 3 0 1 Current output accuracy 1 0 0 2 Internal data resolution of the I O signal 1 1000 1 10000 Internal computation resolution of PID and other computations 1 4096 1 65536 uote AC DC power supply resists powerline fluctuations E6 The AC DC 100V 24V power supply powers the instrument to provide consistent performance Also accepts DC power regardless of polarity specify 220 V power supply when ordering Controller online replacement function portable manual station Use the YS110 portable manual station when exchanging or performing maintenance on a controller You can switch to the spare controller without interrupting the control output YS110 Portable manual station Front panel conforms to the IP54 waterproof standard T gt Il L T f a System connecti ity fi functions L Ethernet support Expandable 1 0 The instrument can be easily connected to DAQWORX DAQSTATION Additional I O can be added by selecting the YS1700 basic model general purpose SCADA and OPC servers via Ethernet Modbus TCP with Expandable I O The total number of input outputs points with the main unit and Expandable I O are 8 analog inputs 4 analog outputs and 14 DI DO e External Al 3 inputs e External AO 1 outputs e External DI 4 points e External DO 4 points Not
11. METER 1 PEN lon gt PROD Le 2 me VS DUT series SE LOCO Single Loop Controller Bulletin 01B08A01 01E www ys1 700 com plant 3AWA The Next Evolution of the YS Series Loop Controller 25 Years of Reliable Control ia a al gre et 4 m 4 191 9 FAIL ALM Pi ae Sz Hy 3 UN GYI c MY si Li s e PI gt TT LST Es ALAN YOKOGAMA A YS beyond PLAT DIY N GPS ABCD T PE CLA ZN2 GRIC e Pi fie ar Envision a plant The new Y 7000 series of single loop controllers is the successoh tothe eee 70 and YS80 single loop controllers They Li N s offers improved connectivity wT ervisory systems and incorporates ec tu i sz new enhanc res that help operators work more efficiently The YS1 000 will work efficiently in petrochemical chemical power pulp and paper boiler and combustion Wid applications Rs Easy to use E Color LCD display with a wide variety of screens a a Dual CPU s 9 Built in hard manual CE and FM Class Div Il approvals Powertul and F Ethernet ready MODBUS TCP e Supports MODBUS RTU serial Available peer to peer and DCS communication options Extended I O ption available Yi Yi 3 Comnbatibilit af Easy Upgrade for YS100 controllers 8 Excellent replacement for obsolete
12. Manual Station for MV Setting YS1360 Dual CPU Display CPU s process Display at normal condition CPU Main CPU s process at normal condition Back up process at fail With dual CPU construction main CPU and display CPU manual control capability and display continues even if an abnormality occurs on one of the CPUs If controller self diagnostics detects a control circuit failure the controller can suspend analog digital output switch to manual mode and allow manual control by operator Failure area Control with Hard manual Manual operation with front keys y N A Display for PV and SV J J N A Control algorithm stop stp Manual operation Hard manual lt Front Panel Hard manual comes standard with the YS1700 YS1500 and YS1360 Manual operation is possible even if all CPUs and control circuits are in a fail state Hard manual operation wheel Independent manual override is built into the control circuits ensuring that control output can continue even when a control circuit including the CPU experiences a problem s izgi Improved process up time Battery free memory backup Nonvolatile memory is used for memory backup Service life is improved because no batteries backup capacitors or other componenis are used Improved basic control performance The YS1000 series achieves higher performance than previous models YS10
13. ation Temperature Water Flow YS1700 YS1500 Programmable Indicating controller Indicating controller YS1350 YS1360 Manual setter for SV setting Manual setter for MV setting YS1310 Cr Indicator with alarm oi Always 0 Power supply Type o Basictype CE marking IP54 1 Basic type with expandable I O CE marking IP54 2 Compatible type for YS100 with YS100 case CE marking 3 Compatible type for YS80 internal unit Compatible type for EBS I EK and HOMAC 4 5 0 100VAC 24VDC 1 220VAC Direct input 2 A01 Thermocouple input RTD input Potentiometer input 2 wire transmitter input isolated 2 wire transmitter input non isolated Communication Frequency input A31 RS 485 communication PC link Modbus YS protocol Peer to peer 3 5 A32 DCS LCS communication 5 Certification A34 Ethernet communication Modbus TCP 1 FM nonincendive approved FM Class I div 2 1 6 Setting software for YS1000 series Always 0 oo Sas Always 0 with CD Media and proprietary cable Option User programming 7 N A Expandable VO 73 NA Ethernet communication er ze J 1 s s RS485 communication PC link Modbus YS protocol J 5 v 5 J 5 v 5 J 5 RS485 communication Peer to peer se N A DCS LCS communication 5 5 N A J 5 5 Direct input v 2 J
14. e An interface for the additional Expandable I O cannot be added after delivery If there is a possibility that extra input outputs will be needed we s recommend that you start with the basic 7 model with expansion I O Avance DX1000 DX2000 Data Acguis tion ie WG mh ANNAN TD LUVUU m TD UJJ m Ethernet Available to the YS1000 basic type Modbus TCP server function one connection Communication with PLC Connections are enabled using the FA M3 s UT link module and the As with previous models communication with Yokogawa s DCS RS485 communication function No programming is necessary to CENTUM is supported This is ideal for DCS backup in chemical exchange data between the instrument and the FA M3 plants and other applications requiring extreamly high reliability Applicable Models YS1700 YS1500 YS1350 and YS1360 CENTUM CS1000 3000 HIS Control bus Modbus FCU YS1700 YS1700 YS1700 The YS1000 can also be connected to PLCs of various manufacturers via the Modbus communication protocol KOUD 91900 910305 1980 Peer to peer communication function A sample of System Construction With peer to peer communication up to 32 YS1700 can be connected interchangeably Four of the connected instruments can lE ja Inter lock Inter lock system YS1310 each output 4 points of analog data and 16 points of status data This makes data exchange and I O sharing poss
15. ible since all instruments under peer to peer communications can read all data 16 analog and 64 status data T g This is optimal for multi loop control as a such with boiler instrumentation X iz si Upper system I O sharing Fe RS485 Field instruments Note Does not support the YS100 series peer to peer communication network YS net Maximum no of connections 32 No of receiving units 32 No of transmitting units 4 Transmitted data 4 analog and 16 status data per transmitting YS1700 Sa Communication interval 200 ms average gt not synchronized to the control computation interval Field wiring Signal in the panel Communication Cases and housing for replacing old models 1 e LA aa er p NL a pt RF a szk i 1 x Ma i ai r ti 4 7 gt LA a i pr NL Indispensable for lasting stable operations at the plant when replacing instrumentation Case and housing are available for replacement of older model SLCs by Yokogawa Electric Corp the EBS EK and HOMAC series allowing you to exchange EK 2 YS80 1 YS80 2 YS100 1 YS1000 compatible type internal unit ase Housing Case Simplifies tuning when starting up or changing the process unit under control Before STC P 89 14sec D 2sec SFA 0 465 Time min SFA SVF Parameter The YS1700 YS1500 s six DI DO terminals can be used for
16. inear control function proportional control built in nonlinear Basic PID control built in nonlinear control function control function sampling PI control built in sampling PI control function and batch PID proportional control built in nonlinear control function control sampling PI control built in sampling PI control function 0 05 0 1 and 0 2 sec programmable mode 0 1 sec multi function mode Control period 0 1 sec Adjustable setpoint filter SVF Self tuning STC Non linear PID control PID control with Additional control Adjustable setpoint filter SVF Self tuning STC Non reset bias function output limiter external cascade control setpoint signal function linear PID control PID control with reset bias function Extended control function Input output compensation Variable gain preset PID output limiter external cascade control setpoint signal Auxiliary control Feed forward control output tracking preset MV output PV SV tracking operation mode Feed forward control output tracking preset MV output function change input filter Square root 10 line segment characterizer ratio PV SV tracking operation mode change input filter Control period Additional control function Auxiliary control function Analog input 1 to 5 V DC 5 channels or 8 channels with with expandable I O Square root 10 line segment characterizer ratio Analog output 4 to 20 mA 1or 2 channels 1 to 5 V DC 2 channels or 3 channels with e
17. instruments to be mounted NO se a N o cel ge O 5 E N N N Third angle projection Unit mm General tolerance value of tolerance class IT18 based on JIS B 0401 1998 2 Weight Approx 1 6 kg 1 When attaching a nameplate or the like to the panel within 60 mm above this instrument ensure that its thickness is less than 30 mm 2 To ensure adequate ventilation allow space of at least 100 mm above and below the panel 3 Front display of YS1700 and YS1500 are shown and they are slightly different from that of YS13L10 keytop and front plate and the like What does Yokogawa vigilance mean to the future of your business Quality Through products that are built from the ground up and tested to the last hour you re ensured continuous operation and more uptime Innovation Your business will benefit from new aie and capabilities bringing true predictability to your process Foresight As the market changes you ll have solutions that give you the continuity and flexibility to plan ahead and grow Our partners know the difference With Yokogawa you can count on a lifetime of plant efficiency from instrumentation to operation support Let us be vigilant about your business Represented by Printed in Japan 701 KP Ed 01 b Sign up for our free e mail newsletter NletsoL Online www yokogawa com ns YOKOGAWA
18. ler The direct input employs highly noise resistant isolated inputs Pulse A mm LE a K aaa gt 2 wire transmitter pr Options available for suffix code 2 3 4 5 of Type Ver 5 Total cost reduction pe tt Applications Automatic Boiler Control An appropriate distribution of control functionality enables safe and stable automatic boiler control Boiler master Main steam pressure control P Feed water level control PV1 f Cascade E i PRD control PV2 Main steam flow Main steam pressure an Feed water PS P Exhaust gas oxygen concentration control Fuel oil 62 Fuel oil flow Air flow Oxygen Exhaust concentration gas Cascade Primary Direct PRD control Enables stable level control when the boiler is started Cross limiting control calculation Air and fuel flow are calculated so that air flow always exceeds fuel flow to prevent incomplete combustion and explosion Feedforward FF control The main steam pressure and feed water level are controlled quickly in response to changes in the main steam flow Chemical Injection Control The controller can be connected with various sensors by eight analog inputs Feedwater flow and chemical injection volume can be controlled by the dual loop control function turbidity Conductivity DO concentration DO satur
19. ned in this users manual are trademarks or registered trademarks of their respective companies Ground GND Ground GND Analog input 6 Analog input 8 Analog output 4 Analog input 7 1 to 5VDC Digital input 7 Digital output 7 Digital input 8 Digital output 8 Digital input 9 Digital output 9 palaol o lou n us re zu ain ar Mr ace Nc Er A ce Le Digital input 10 Digital output 10 30 Degital output 2 or PV1 low limit alarm gt H P gt gt Second loop alarm output gt Second loop alarm output 31 Degital input 5 7 output 32 Degital output 3 or a F F t gt j i Deviation alarm output gt O C status output gt L R status output gt Alarm output 3 33 1 7 Degjital input 4 S 34 Degital output 4 or ei Fu F gt pa ii me 3 C A M status output gt C A M status output gt C A M status output gt Alarm output 4 gt C M status output gt C M status output GER 36 x Degital output 5 or gg E gt a ip 5 gt C A M status output gt C A M status output C A M status output gt Alarm output 5 gt Input for LCD backlight off gt Input for LCD backlight off Ga 38 Degital output 6 or gt Action mode switching Action mode switching Action mode switching gt Alarm output 6 Action mode switching gt Action
20. petitive controllers V codes for ordering information F F excellence j o SS t y Dn et s Designed with a lightweight compact case Programs using text language or graphical Replacement housings for YS100 and YS80 ve Some of functions are available as optional features or 4 available to a specific model Please see model and suffix a 1 YS100Q7 Series is a cofe building block of Yokogawa s VigilaniPlant solutions that promise to pring operational g i na zi ss A Se m TS Ai ii ey Functions that support process operations f F j PI a 7 r F Color LCD that s easy to see and easier to use Main display ZA Event Display YA i TREND Display KA Digital values displayed side by side Displays when events are occurring Your selection of up to 4 analog inputs with an intuitive analog meter makes messages can be displayed in English or outputs can be displayed as trends the YS1000 the perfect replacement for Chinese Japanese and other YS80 or obsolete moving coil controllers languages ALARM Display Color LCD alarm display makes it easy to identify and review alarm activity ALARM IC 20 D B High Temp Lis Ale arm FH PLI CLOSE i 1 VALVE SR 97 0208 wn the SHI ose i Veni d il Pi PP ail lun 0 Single loop controller LOOP Display
21. thod Function block or text use YSS1000 configuration and programming software Security Protection by password Program capacity 400 modules function block 1000 steps text Communication Modbus TCP RS 485 modbus and DCS LCS Security Protection by password Hardmanual Yes standard Communication Modbus TCP RS 485 modbus peer to peer and DCS LCS Hardmanual Yes standard YS110 Portable manual station YS1360 Auto Manual Station for MV Setting YS1350 Auto Manual Station for SV Setting YS1310 Indicator with Alarm This manual loader allows an Indicating alarm monitor with two inputs for simultaneous monitoring of two loops High high high low and low low alarms can be detected for each of the two inputs and logical ANDs or ORs of arbitrary alarms can be set From among these a total of six alarms can be assigned to alarm output contacts This manual loader allows an operator to send a setpoint to a remote controller Its operation mode is switched by the mode keys C and M or a status input A status identification output is provided as standard operator to interrupt a control signal to a final control device and manually control it s operation temporally Its operation mode is switched by the mode keys C and M ora status input A status identification output is provided as standard Analog input Digital signal 1 to 5 V DC 2 channels Six outputs with one for
22. xpandable 1 0 Analog input 1 to 5 V DC 5 channels Alarm function High low high high low low limits deviation limit and velocity alarm Analog output 4 to 20 mA 1 channel and 1 to 5 V DC 2 channels Degital signal Six channels each being common to both input and output Alarm function High low high high low low limits deviation limit and Retransmission output PV1 PV2 SV1 SV2 and other analog inputs velocity alarm Input computation Square root with low signal cut off 10 line segment characterizer first order lag calculation Degital signal Six channels each being common to both input and scaling of external cascade control setpoint signal feed forward signal calculation output Output computation Output high low limiting Retransmission output PV1 PV2 SV1 SV2 and other analog inputs Input computation Square root with low signal cut off 10 line segment characterizer first order lag calculation scaling of external cascade control setpoint signal feed forward signal calculation Output computation Output high low limiting Computation modules Four arithmetic operations square root absolute selector limiter ten segmen characterizer alarm first order lag differentiation dead time velocity computations moving average timer program setting counter pulse output temperature pressure compasations power logarithmic logic computations comparison branching switching sub program and register manipulation Program me
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