Instruction and Operating Manual

Transcription

1 M/SS2/E Instruction and Operating Manual Smart Valve Positioner SS2L / SS2R Series

2 Contents 1. Introduction Sub-Parameters Flow Diagram 2. Overview of Structure Change of Input Signal 3. Specifications Span Adjustment 4. Part Numbering System (Order Code) Zero Adjustment 5. Principle of Operation Selecting DA / RA 6. Descriptions of LCD Display and Buttons Selection of Linear, E.Q.%, 7. Installation 7 Quick Open 7.1 Mounting onto Linear Actuator Split Range Setting 7.2 Mounting onto Rotary Actuator Valve Shut-Off Setting 8. Air Connections P-Gain 8.1 SS2L(linear type) I-Gain 8.2 SS2R(rotary type) D-Gain 9. Electrical Connections Setting of Alarm Limits 9.1 Terminal Block Response Speed Adjustment 9.2 Measuring Output Signal Moving Display Figure Position With ma Loop Calibrator Setting of Output Signal With Multi-meter Setting of Dead Band 9.3 Wiring Alarm Limits Control Mode 9.4 Wiring SPDT Micro Switches 12. Maintenance / Service Setting SPDT Micro Switches 12.1 Preliminary Check Points 10. Quick Auto-Calibration Module Parts 10.1 Quick Auto-Calibration 12.3 Structure of Gauge Block 10.2 Span Adjustment 12.3 Re-Setting of Potentiometer 10.3 P-Gain Adjustment 13. Troubleshooting Checking Ambient Temperature 14. Spare Parts Description of Parameters Flow SS2L Spare Parts 11.1 Parameters Flow Diagram 14.2 SS2R Spare Parts 11.2 Main Parameters 14.3 List of Spare Parts 11.3 Sub-Parameters 15. Dimensions Setting Main Parameters 15.1 SS2L(linear type) LOCK ON / OFF 15.2 SS2R(rotary type) Display Mode 15.3 SS2R (with 2 x SPDT micro switch) Manual Mode Monitor Mode Auto-Calibration Mode A Performing Auto-Calibration B Initializing Parameters Self-Test Mode 1

3 1. Introduction SS2L / SS2R Series 1.1 General Information This instruction and operating manual contains important notices the user should observe for a personal safety as well as for prevention against damage to property. Notices concerning a personal safety are highlighted by a safety alert symbol ( ). 1.2 General Safety Instructions This product was delivered out from the factory without any safety problems after a strict quality management process. In order to maintain this status and ensure a safe operation of this product, please be sure to read all safety instructions carefully described in this manual and observe safety information and symbols without exception. 1.3 Correct Usage 1 This product can be used only for purposes specified in these instructions. If they are not definitely stated in these instructions, the user is fully responsible for all changes and retrofits to this product. 2 In case of the intrinsically safe product supplied, please make sure to connect this product to the certified intrinsically safe circuits. These circuits should correspond with the intrinsic safety parameters indicated on the product nameplate or the certificates. If the circuits do not correspond with the intrinsic safety parameters on the product nameplate or the certificates, any safety required for approval can no longer be warranted. 3 This product is the electrostatic sensitive device that may be seriously damaged by voltages undetectable to a human. These kinds of voltages occur as soon as a electronic component or an assembly is touched by a person who is not grounded against a static electricity. Damage to a electronic component as a result of overvoltage cannot usually be detected immediately. It may become apparent after a long period of operation. Therefore, please make sure to avoid electrostatic charge. 1.4 Range and Responsibilities of Personnel 1 Qualified personnel should be trained, instructed or authorized in operating and maintaining products and systems according to the safety regulations for electrical circuits, high pressures and hazardous atmosphere. 2 For explosion proof products, they should be trained, instructed or authorized in carrying out work on electrical circuits for hazardous systems. 3 They should be trained or instructed in maintenance and use of proper safety equipment according to the safety instructions. 4 They should have a good experience to identify risks and avoid potential hazards when working with these products and systems. 1.5 Transport and Storage Make sure that damages during delivery are prevented through proper packaging. Products and replacement parts should be returned in their original packaging. If the original packaging is no longer available, please ensure that they should be packaged to provide sufficient protection against transport. 2

4 2. Overview of Structure This product consists of the following parts. Electronic card comprised of microprocessor, HART modem and LCD Potentiometer for position feedback Gauge block The followings are descriptions of internal parts without cover. No. 1 LCD Description 2 Card cover 3 Gauge block 4 Supply air gauge 5 Out 1 gauge 6 UP, Up button 7 DN, Down button 8 MO, Mode button 9 ENT, Enter button 10 Ground Cable gland (or blind plug) Blind plug (or cable gland) 13 Air venting hole 14 Body 3

5 3. Specifications SS2L / SS2R Series Input signal Min. / Max. current Voltage drop (impedance) VDC 3.6 ma / 50mA Without HART : 8.7 VDC 20mA) With HART : 9.4 VDC (470Ω@ 20mA) Stroke Linear type: 8-130mm * Operating Angle Rotary type: Supply air pressure Output pressure range Air flow capacity Air consumption Operating characteristic LCD display bar ( psi) 0-100% of supply air 80 l/min = 4.8 Nm 3 /h = 2.8 scfm (Supply = 1.4 bar) 233 l/min = 14 Nm 3 /h = 8.2 scfm (Supply = 6 bar) 2.8 l/min = 0.17 Nm 3 /h = 0.1 scfm (Supply = 1.4 ~ 6 bar) Linearity < ±0.3% F.S Sensitivity < 0.2% F.S Hysteresis < 0.2% F.S Repeatability < 0.2% F.S 4-digit Response speed (Min. 1, Max. 1000) Scan time 2 ms Shut-off value 0-10% Valve action Direct acting (DA) / reverse acting (RA) Operating temperature -30 ~ +80 (-22 ~ +176 ) ** Pneumatic connections Rc 1/4 or NPT 1/4 Electrical connections G 1/2, NPT 1/2 or M20 X 1.5 Explosion proof / protection class Body material / painting Weight Intrinsically safe (Exia IIC T6) / IP66 Aluminum diecast / powder coating 1.6 kg * For more than 200mm stroke on request ** Operating temperature of -40 on request 4

6 4. Part Numbering System (order code) 4.1 Linear type (SS2L) SS2L SS2L - TF SS2L - EX SS2L - H SS2L - P Linear type Output position transmitter 4-20 ma 2 x alarm micro switches SPDT ATEX 94/9/CE IECEx Exia IIC T6 HART Communication PROFIBUS Communication Other executions on request SS2R - TF SS2R - EX SS2R - H SS2R - P Output position transmitter 4-20 ma 2 x alarm micro switches SPDT ATEX 94/9/CE IECEx Exia IIC T6 HART Communication PROFIBUS Communication Other executions on request 5. Principle of Operation If 4-20 ma input signal is supplied, the micro processor compares input signal with position feedback and sends control signal to the I/P converting module. Pneumatic signal from the I/P converting module operates the valve and the valve stays at the desired position. 5

7 6. Descriptions of LCD display and Buttons 1 Display of input or output 2 Main parameters 3 ma, % display mode 4 Operation of HART 5 Up button 6 Down button 7 Mode button 8 Enter button Press "Mode" button for 5 seconds Press "Up( )" button for 5 seconds Press "Down( )" button for 5 seconds ㆍ Quick auto-calibration ㆍ P-gain adjustment ㆍ Span adjustment Press "Enter" button for 5 seconds ㆍ Ambient temperature ( ) 1 Display of input or output ㆍ ma, % 2 Main parameters 3 Display mode 4 HART communication MODE RUN DISP MAN MON AUTO LOCK TEST PARM ㆍ Selection of ma, % or in reverse way ㆍ HART communication 5 Up ( ) ㆍ UP button 6 Down ( ) ㆍ DOWN button 7 MO (Mode) ㆍ Selection of running mode ㆍ Selection of parameter group or parameter 8 ENT(Enter) ㆍ Save of setting values 6

8 7. Installation SS2L / SS2R Series 7.1 Mounting onto Linear Actuator Installation of Follower Guide UNIWORLD and HYGIENIC Series PIN LEVER BRACKET HP60 Series SCREWS PIN LEVER BRACKET Installation of Feedback Lever and Mounting Bracket Mounting bracket for SS2L positioned is designed to support IEC Mounting bracket 2 2 Screws 3 Feedback lever 3 4 SS2L positioner 7

9 7.1.3 Mounting onto Cast Yoke or Pillar Yoke < Cast yoke type > < Pillar yoke type > 1 Cast yoke 2 Mounting bracket 3 Screws 4 U-bolts 5 Pillar yoke on request Mounting onto Other Kind of Cast Yoke 1 Cast yoke 2 Mounting bracket 3 Screws 8

10 Mounting Diagram A Type 30 B Type Feedback Levers "A" type: 8 ~ 30mm stroke C Type 65 "B" type: 8 ~ 70mm stroke standard "C" type: 8 ~ 130mm stroke 130 "D" type: 80 ~ 200mm stroke Installation of Feedback Pin Follower Guide 9

11 7.1.7 Standard Installation 1 Supply air directly to the actuator, adjust the air filter regulator and set air when the valve reaches to 50% stroke. 2 Install the feedback lever horizontally at 50% stroke position. 3 If the feedback lever is not installed horizontally, move the mounting bracket up and down little by little so that it can be positioned horizontally. 4 Fix the mounting bracket with screws. 5 Connect air lines between the position and the actuator. 6 Supply air to the positioned and perform auto-calibration by pushing Mode button for 5 seconds. 7 The operating angle from 0% to 100% stroke should be within the range of 30. In case of the over-range of 30, move the valve stem pin left and right and make the operating angle stay within 30. Be sure to install the air filter regulator type AFR35 before the positioner and check a supply air pressure required to move the valve. 10

12 7.2 Mounting onto Rotary Actuator The SS2R positioned supports NAMUR mounting standard (VDI/VDE 3835, IEC ). 1 SS2R positioner 2 Multi-size bracket 3 Rotary actuator a Assemble the multi-size bracket to the positioner with 4 pcs M6 screw. b Mount the positioned onto the actuator with 4 pcs M5 screw. c Connect air lines between the positioned and the actuator. d Perform auto-calibration by pushing MODE button for 5 seconds. Be sure to install the air filter regulator type AFR80 before the positioned and check a supply air pressure required to move the valve. 11

13 7.2.2 Mounting with Fork Lever Type 1 SS2R positioner 2 Multi-size bracket 3 Rotary actuator 4 Fork lever 5 Positioner feedback lever Position of Fork Lever Clockwise movement Counter-clockwise Movement 12

14 7.2.4 Re-assembling Multi-size Bracket according to Rotary Actuator L H L H L H (mm) (mm) (mm) (mm) Check L and H on the actuator and re-assemble the multi-size bracket to fit your actuator mounting configuration. 13

15 8. Air Connections 1 Be sure to install the air filter regulator before the positioner. 2 Supply air should not contain water, oil or moisture. 3 It is recommended to set a supply air pressure 10% higher than the actual operating pressure of the actuator. 8.1 SS2L (linear type) 8.2 SS2R (rotary type) 14

16 9. Electrical Connections SS2L / SS2R Series Be sure to supply the rated voltage and current stated on this manual. Otherwise, it may cause a serious damage or malfunctions. Check polarity of + and exactly and connect wires. When it is necessary to open the positioner cover at a humid place, more attention is required. It may cause a serious damage or malfunctions. 9.1 Terminal Block Micro Switch 1, F NO NC COM NO NC COM Input Ground Alarm limit 1 Switch 1 Switch 2 Output Alarm limit mA input signal 9 - Alarm limit mA input signal 3 Ground 11 Switch 1 NO mA output signal 12 Switch 1 NC mA output signal 13 Switch 1 COM 6 + Alarm limit 1 14 Switch 2 NO 7 - Alarm limit 1 15 Switch 2 NC 8 + Alarm limit 2 16 Switch 2 COM 15

17 9.2 Measuring Output Signal With ma loop calibrator Position Transmitter Specifications Output signal Power supply Output current limit 4 20mA, 2-wire VDC 30mA DC With multi-meter Linearity ±0.75% F.S Operating temperature -20 ~ +80 Zero and span of position feedback (4-20mA output signal) are set automatically during auto-calibration process. 9.3 Wiring Alarm Limits 24VDC should be supplied for alarm limits. 9.4 Wiring SPDT Micro Switches Micro Switch Specifications Type Rating code SPDT 250 VAC Operating temperature -25 ~

18 9.5 Setting SPDT Micro Switches After auto-calibration process, turn the micro switch cams clockwise slowly and check the contact points. After checking the contact points of the micro switches at a desired position, fix with screws. For reference, upper switch 1: No. 11, 12, 13 lower switch 2: No. 14, 15, Quick Auto-Calibration 10.1 Quick Auto-Calibration Supply 4-20mA input signal and push MODE button for 5 seconds, auto-calibration process will start. 1 It may take a longer time according to sizes of the control valve and the actuator. Generally, it will take 2 3 minutes with the standard size valve and actuator. 2 If DATA on LCD blinks after auto-calibration process, see the error codes on page 21. In case of a reverse acting actuator, RA is displayed and a countdown begins. RA DA END RUN (auto-calibration is completed) In case of a direct acting actuator, DA is displayed and a countdown begins. 17

19 10.2 Span Adjustment (SPAN) Span is set automatically after auto-calibration process. But it can be re-set manually as below, if necessary. Push DN button for 5 seconds, SPAN will appear. Push ENT button, 100 will blink. Push UP or DN button, change the current value and push ENT button for a memory saving. If SPAN reaches a desired point, push MODE button. RUN mode will start. The above is just an example to help understand how to set Span to 98.5%. Keep pushing UP/DN button, SPAN will increase or decrease fast. 0.1% will increase or decrease by pushing a button one time P-Gain Adjustment (P-GN) P-Gain may be set differently according to the sizes or the working conditions of the actuator. As it is calculated precisely by a micro process, it is not necessary to re-set, if not in a case of a hunting problem. If a hunting problem happens, decrease P-Gain value. If an oscillation problem happens, increase P- Gain value. Increase or decrease 0 to 5 in case of the small actuator. Increase or decrease 0 20 in case of the big actuator. Push UP button for 5 seconds, P-GN will appear. Push ENTER button, the number at the first place will blink. Push UP or DN button and change the current value. Push MODE button one time, move the number at the second place and change the current value. After P-Gain reaches a desired value, push ENTER button two times. RUN mode will start. The above is just an example to understand how to set P-Gain to 72% Checking Ambient Temperature Keep pushing ENTER button, an ambient temperature surrounding the positioned will appear. Note that this ambient temperature appears only while pushing ENTER button. 18

20 11. Description of Parameters Flow 11.1 Parameters Flow Diagram Normal RUN Mode Push MODE RUN DISP MAN MON AUTO PARM TEST LOCK PVPR % MSET CHEK TUNE TIME ON SVPR % END MILE REST STP1 OFF SVMA ma ZERO P01 ᆢ STP2 P51 PVMA ma STEP STP3 PV-R % INPU SPAN C/MD NOR1 NOR2 SMAL ANGL % DEAD % OUT DIGN 1 1OR2 0-99% 0 ZERO DA RA R/DA QOPN E50 E25 LINEAR L/EQ SPLT AL2L-2H 0-9.9% 1000 AL1L-1H AUTO AUTO AUTO 0.3 SPED ALRM D-GN I-GN P-GN SHUT 19

21 11.2 Main Parameters Ref. Parameter Description Function RUN Running status Display of positioner running status MODE Mode Change of parameters DISP Display mode ma, % or in reverse way MAN Manual mode Conversion to manual setting mode MON Monitor mode Display of selected parameters and total valve runtime AUTO Auto-calibration Auto-calibration and initialization of factory setting 11.5 PARM Sub-parameters See sub-parameters below TEST Test mode Test of valve with 2 step, 4 step and 0 100% LOCK Lock mode Save of setting values 11.3 Sub-Parameters Ref. Parameter Description Function Default INPU Input signal 4 20mA or 20 4mA 4 20mA SPAN Span adjustment 0 100% 100% ZERO Zero adjustment 0 99% 0% R / DA RA / DA Reverse acting or direct acting RA L / E.Q / QOPN Characteristic Linear, E.Q. % (1:25 or 1:50) or quick open Linear SPLT Split range 4 12mA or 12 20mA 4 20mA SHUT Shut-off 0 9.9% 0.3% P-GN P-Gain Proportional gain value Auto-set I-GN I-Gain Integral gain value Auto-set D-GN D-Gain Differential gain value Auto-set ALAM Alarm limit low, high AL1L/AL1H, AL2L/AL2H 0 10%, % SPED Response speed DIGN Display place Movement to one or two decimal places OUT Output signal 4 20mA or 20 4mA 4 20mA DEAD Dead band % 0.5% C/MD NOR1 / NOR2 / SMAL / ANGLE Standard actuator, strong valve packing friction, small actuator or angle seat valve NOR1 20

22 11.4 Setting Main Parameters The following abbreviations will be used hereafter. SS2L / SS2R Series MODE MO UP UP ENTER ENT DOWN DN LOCK ON / OFF LOCK ON OFF 1 LOCK ON : Saves all setting values. 2 LOCK : Be sure to LOCK OFF when it is necessary to read or change the OFF selected parameters and the saved setting values. 3 Quick auto-calibration, Span, P-Gain can be carried out without LOCK Off (see 10. Quick Auto-calibration ) 4 LOCK is on unless any input signal is not supplied. 5 It is difficult to read or change under LOCK ON situation Display Mode DISP PV-R% SVMAmA SVPR% PRPR% PVMAmA Data on LCD can be displayed with ma, % or in a reverse way. 21

23 PV-R If PV-R is selected, the small point will blink as shown to the left. Prese nt value(pv) or setting value(sv) is displayed with ma or %. Setting value stands for input signal. If a control valve is a direct acting type and it is necessary to see the feedback values in a reverse way, select PV-R Manual Mode (default: 0) Move the valve to 0 100% manually. MAN MSET END ZERO STEP 22

24 If END is set, the actuator will move to 100%. If ZERO is set, the actuator will move to 0%. If STEP is selected and UP/DN is pushed, the actuator will move to 1% by 1% Monitor Mode MON CHEK 0OK ㆍㆍㆍ 9OK MILE P01 ㆍㆍㆍ P51 Check the error codes and a total valve runtime. 23

25 Error Codes Cause Symptom Action ER0 ER1 Low input current (3.7mA) High input current (20.5mA) Data on LCD appears too dim or too bright. Re-check 4 20mA input signal. ER2 ER3 Compensation Minimum Compensation Maximum No movement or very poor sensitivity Re-check a supply air pressure. ER4 ER5 Down Speed Long Up Speed Long Slow movement Actuator is too big. Use the air volume booster. ER6 Bias Low Valve is not closed or moves slowly. ER7 Bias High Valve is not closed or moves slowly. Loosen the valve packing. ER8 Feedback error (0-1%) ER9 Feedback error (2-9%) PM00 appears at 4 th step and auto-calibration process fails. Operating stroke is too small and the valve doesn t move smoothly. Potentiometer socket contact defectiveness Or PCB board defectiveness Re-install a potentiometer and increase the operating angle of the feedback lever Number 1 corresponds to 10 hour. For example, if 1156 appears, it means that this valve has been working for 11,560 hours. 99,990 hours (9999ⅹ10), namely, 4,166 days (11.4 years) can be recorded at the maximum. After 9999, 0000 will begin again. P01 to P51 are just for a factory setting and only for reference. 24

26 Auto-Calibration Mode AUTO TUNE RSET If necessary, initialize all setting values to the original values set after auto-calibration or return them to the factory setting values A Performing Auto-Calibration Reverse acting (RA) is a standard factory setting. Even if air lines are connected wrongly by mistake, the SS2 positioner detects automatically and performs autocalibration for direct acting (DA). If the actuator doesn t work with 4-20mA input signal properly, change air lines of OUT1 and OUT2 with each other and perform auto-calibration again. For a reverse acting type (RA), a countdown will begin like RA END. For a direct acting type (DA), a countdown will begin like 5-RA-DA END B Initializing Setting Values (RESET) All setting values return to the standard factory setting values Self-Test Mode TEST TIME STP1 STP2 STP3 Check the valve working status by moving regardless of input signals A 1 STP1: 0% 50% 100% 50% 0% Repeat 2 STP2: 0% 25% 50% 75% 100% 75% 50% 25% 0% Repeat 3 STP3: 1% 10% 20% 90% 100% 90% 20% 10% 0% Repeat 25

27 B Test Time Setting for Each Step (default: 10) Each test step advances at interval of 10 seconds as a standard factory setting. SS2L / SS2R Series 26

28 11.5 Sub-Parameters Flow Diagram SS2L / SS2R Series ~ INPU SPAN C/MD NOR1 NOR2 SMAL ANGL % DEAD % OUT DIGN 1 1OR2 0-99% 0 ZERO DA RA R/DA QOPN E50 E25 LINEAR L/EQ SPLT AL2L-2H 0-9.9% 1000 AL1L-1H AUTO AUTO AUTO 0.3 SPED ALRM D-GN I-GN P-GN SHUT The colored cells stand for the standard factory settings. All setting values return to the standard factory settings if RESET begins. 27

29 Change of Input signal (default: 4-20mA) INPU Change input signal to 4-20mA or 20-4mA Span Adjustment (default: 100) SPAN % 1 Be sure to supply 20mA input signal before adjusting SPAN. 2 Push DN button one time, Span will decrease by 0.1%. Keep pushing DN button, Span will decrease fast. 3 For a quick Span setting, push DN button for 5 seconds. (see 10.2) 28

30 Zero Adjustment (default: 0) ZERO % Adjust Zero to 0 99% Selection of Direct Acting(DA) or Reverse Acting(RA) (default: RA) R/DA R A D A Change of Linear, E.Q.% or Quick Open (default: Linear) L/EQ LIN E25 E50 QOPN Change a valve working characteristic to Linear, 1:25 EQ%, 1:50 EQ% or Quick Open. Linear EQ% ( 1 / 25 ) EQ% ( 1 / 50 ) 29

31 Quick Open Spilt Range Setting (default: 4-20) SPLT Set a split range to 4-12mA or 12-20mA Valve Shut-off Control (default: 0.3) SHUT It is a safety function to close a valve completely. And it is possible to change 0% to 9.9%. For reference, 0.1% means that a valve responds to 0.016mA. Therefore, a standard value of 0.3% means that a valve is closed at 4.048mA completely P-Gain (Proportional Gain) P-GN Auto Set The micro processor calculates P-Gain value during auto-calibration process in consideration of sizes of the valve and the actuator. If a hunting problem happens, decrease P-Gain value. If an oscillation problem happens, increase P-Gain value. P-Gain values are different according to the working conditions. In case of a small actuator, increase or decrease 5 to 10. In case of a big actuator, 30

32 increase or decrease 20 to Push MO button one time in order to move to ten figures or hundred figures. 2 For a quick P-Gain setting, push UP button for 5 seconds. (see 10.3) I- Gain (Integral Gain) I-GN Auto Set As I-Gain is set automatically during auto-calibration process, it is not necessary to change manually. Push MO button in order to move to ten figures to hundred figures D-Gain (Differential Gain) D-GN Auto Set As D-Gain is set automatically during auto-calibration process, it is not necessary to change manually. Push MO button in order to move to ten figures to hundred figures. 31

33 Setting of Alarm Limits (default: 0 10%, %) ALRM AL1L AL1H AL2L AL2H Set an opening point or a closing point of a control valve. AL1(L, H) is set to 0 10% and AL2(L, H) is set to % from the factory as standard. For example, See the below in order to re-set AL1 to 20 40%(AL1L = 20, AL1H = 40). 1 AL1L Setting 2 AL1H Setting 32

34 For example, see the below in order to re-set AL2 to %(AL2L = 80, AL2H = 100). 1 AL2L Setting 2 AL2H Setting How to Wire Alarm Limits 24VDC should be supplied for alarm limits. 33

35 Response Speed Adjustment (default: 1000) Make a control valve and an actuator respond faster or more slowly. SS2L / SS2R Series Change of Decimal Display DIGN 1 1 or 2 Setting value (SV) is displayed by the first decimal place as standard. It is possible to display by the second decimal place. For reference, only ma values can be displayed by the second decimal place. In case of % value, it is limited to display by the first decimal place Setting of Output Signal (default: 4-20mA) OUT mA is set as a standard factory setting. It is possible to change to 20 4mA. 34

36 Setting of Dead Band (default: 0.5) DEAD % If there is a difference between Setting Value(SV) and Present Value(PV), adjust Dead Band to %. 0.5% is a standard factory setting. For reference, 0.50 corresponds to 0.5% and the maximum value is 9.99%(9.99) Control Mode according to Working Condition C/MD NOR1 NOR2 SMAL ANGL In case of normal actuator In case of strong valve packing friction In case of small actuator In case of angle seat valve 35

37 Try this Control Mode(C/MD) only when the valve doesn t work smoothly after autocalibration process. 12. Maintenance / Service 12.1 Preliminary Check Points Voltage - The positioner commonly requires 24VDC for operation. - Voltage drop (impedance): Without HART 8.7VDC 20mA) With HART 9.4VDC 20mA) Electrical Connections Check polarities (+, -) of 4-20mA input signal definitely and make the electrical connections Pneumatic Connections (see 8.1, 8.2) Supply Air Quality A supply air should be definitely clean and compressed free of water, moisture or oil in conformance with IEC 770 and ISA Module Parts 1 RTQ Coil Assembly (spare part No. 12) 2 Pilot Valve Assembly (spare part No. 5) 3 PCB Control Board Assembly (spare part No. 3) 36

38 12.3 Structure of Gauge Block SS2L / SS2R Series 12.4 Re-setting of Potentiometer (spare part No. 14a, 14b) It is necessary to adjust a setting of potentiometer as below when a gear position is moved due to user s carelessness. For reference, 0~10kΩ potentiometer is installed into the SS2 positioner Dis-install the electronic card from the SS2 positioner and make the markings on two gears match with each other. Move the feedback lever to 50% position and adjust a potentiometer so that it can reach nearly 5kΩ. Re-install the SS2 positioner onto the valve and re-perform auto-calibration. 13. Troubleshooting If the positioner doesn t work properly and DATA blinks DATA on LCD blinks, try to take action as below. 37

39 Cause Symptom Action ER0 ER1 Low input current (3.7mA) High input current (20.5mA) Data on LCD appears too dim or too bright. Re-check 4 20mA input signal. ER2 Compensation Minimum ER3 Compensation Maximum No movement or very poor sensitivity Re-check a supply air pressure. ER4 ER5 Down Speed Long Up Speed Long Slow movement Actuator is too big. Use the air volume booster. ER6 Bias Low Valve is not closed or moves slowly. Loosen the valve packing. ER7 Bias High Valve is not closed or moves slowly. ER8 Feedback error (0-1%) PM00 appears at 4 th step and autocalibration process fails. Potentiometer socket contact defectiveness Or PCB board defectiveness ER9 Feedback error (2-9%) Operating stroke is too small and the valve doesn t move smoothly. Re-install a potentiometer and increase the operating angle of the feedback lever. 38

40 14. Spare Parts SS2L / SS2R Series 14.1 SS2L Spare Parts SS2L (LINEAR TYPE) L L 17L

41 14.2 SS2R Spare parts SS2R (ROTARY TYPE) R R 17R

42 14.3 List of Spare Parts SS2L / SS2R Series No. Part No. Description 1 PG-SS2-01 Cover 2 PG-SS2-02 PCB control board cover 3 PG-SS2-03 PCB control board module 4 PG-SS2-04 Pilot valve cover 5 PG-SS2-05 Pilot valve module 6 PG-SS2-06 Body air line cover 7 PG-SS2-07 Air line O-ring 8 PG-SS2-08 SS2 body 9 PG-SS2-09 Gauge block O-ring 10 PG-SS2-10 Gauge block (G) 11 PG-SS2-11 Gauge block (N) 12 PG-SS2-12 RTQ coil module 13 PG-SS2-13 RTQ coil cover 14L PG-SS2-14 Potentiometer spring holder (L) 14R PG-SS2-15 Potentiometer spring holder (R) 15 PG-SS2-16 Feedback gear wheel, shaft 16L PG-SS2-17 Feedback lever (L) 16R PG-SS2-18 Feedback shaft (R) 17L PG-SS2-19 Mounting bracket (IEC ) 17R PG-SS2-20 Multi-size bracket (IEC ) 18 PG-SS2-21 Cable gland 19 PG-SS2-22 Blind plug 41

43 15. Dimensions SS2L / SS2R Series 15.1 SS2L (linear type) 42

44 15.2 SS2R (rotary type) SS2L / SS2R Series 43

45 15.3 SS2R (with 2 x SPDT micro switch) SS2L / SS2R Series 44