Intelligent Positioner

Transcription

1 Master Instruction MI EVE0105 A-(en) SRD991 Intelligent Positioner The intelligent electro-pneumatic positioner SRD991 is designed to operate pneumatic valve actuators from control systems and electronic controllers using the HART- communication signal superimposed on the 4-20 ma analog control signal. Pure digital operation operation is available using FOXCOM digital communication with the I/A Series System. FEATURES Autostart Self diagnostics Communication HART or FOXCOM Configuration by means of local keys, hand-held terminal, PC or I/A Series System Low air consumption Low vibration effect in all directions Stroke8to100mm(0.3to4in) Angle range up to 95 Easy operation with three key pads Supply air pressure up to 6 bar (90 psig) Single or double-acting Mechanical travel indicator Mounting on linear actuators direct or according to IEC 534, Part 6 (NAMUR) Mounting on rotary actuators according to VDI/VDE 3845 Protection class IP 65 and NEMA 4 Explosion protection: EEx ia IIC T4 and EEx ia IIC T6 according to CENELEC or Intrinsic safety according to FM and CSA Built-in independent inductive limit switches (optional) Sensors for supply air pressure and output pressure (optional) Booster relay to minimize stroke time (optional) Repair and maintenance operations must be carried out by qualified personnel!

2 2 SRD991 MI EVE0105 A-(en) TABLE OF CONTENTS CHAP: CONTENT PAGE CHAP: CONTENT PAGE 1 METHODOFOPERATION General Blockdiagram Operation Analogmode Digitalmode Software LABELS DESIGN Accessories MOUNTING TO LINEARACTUATORS DirectMounting Preparation of the positioner Preparation of the actuator Mounting of the positioner Mountingdimensions NAMURMounting Preparation of the positioner Preparation of the actuator Mounting of the positioner Mounting dimensions MOUNTING TO ROTARY ACTUATORS Typeofmount Preparation of the positioner Preparation of the actuator Mounting of the positioner Mounting dimensions SYSTEM CONFIGURATION WithoutCommunication Non-intrinsicallysafe Intrinsicallysafe WithHARTCommunication Non-intrinsicallysafe Intrinsicallysafe With FOXCOM Communication (4-20 ma) Non-intrinsicallysafe Intrinsicallysafe With FOXCOM Communication (digital) Non-intrinsicallysafe Intrinsicallysafe ELECTRICALCONNECTION Jumpersettings START-UP General Setting by means of local keys Operating modes of the positioner Operationwithlocalkeys Table2:Menu Table3:Settingmode Description of menus Adjustment of the travel indicator Setting by means of hand-held terminal, PCorI/ASeriessystem SHUT-OFF SAFETYREQUIREMENTS TROUBLE-SHOOTING GUIDE MAINTENANCE General Supply filter replacement Removal of the electronics unit Replacement of mechanical and pneumatic units Amplifierreplacement Preamplifier replacement IP-module replacement Feedback unit replacement Anglecalibration OPTIONS Built-inpressuresensors APPENDIX A Mode diagrams DIMENSIONS... 36

3 MI EVE0105 A-(en) SRD METHOD OF OPERATION 1.1 General The intelligent positioner SRD991 1 and the pneumatic actuator 2 form a control loop with the setpoint value w (from master controller or operator system), theoutputpressureyandthepositionxoftheactuator on valve 3. The positioner can be attached to both linear actuators and rotary actuators. Actuators with spring force are controlled by a single acting positioner. Actuators without spring force are controlled by a double acting positioner. The positioner can be operated locally by means of local keys. HART and FOXCOM versions: The positioner can be operated locally or remotely by means of a hand-held terminal 4, a PC or I/A Series system (FOXCOM). For the supply air, we recommend the FOXBORO ECKARDT FRS923 filter regulator. w x y Block diagram s Air supply bar ( psig) Input Analog mode: mA (+ FSK) w Digital mode: FSK DC V FSK = Frequency Shift Key 8 FSK D 9 A D 7 U const I P µ C y/y1 Output pressure y 2 to the actuator x Position of the actuator Operation Analog mode During analog mode operation (point to point) the current signal ma at the input w is converted to supply voltage by the voltage converter 7.The current value is measured, converted by the A/D- converter 9 and flows through switch 10 to the digital control unit 11 containing the micro processor. This output drives the analog operating electromechanic converter (IP-module) 12, which controls the analog single acting or double acting pneumatic amplifier 14 through the preampifier 13. The output of the amplifier 14 is the output pressure y (y 1,y 2 ) to the actuator. The pneumatic amplifiers are supplied with supply air s bar ( psig). The position x of the actuator is sent to the control unit 11 by the position sensor (conductive plastic) 15 and is independently displayed at the mechanical travel indicator 16. Pressure sensors 19, 20 (optional) and external inputs/outputs 21 (optional) enable independent alarm signals. The mechanical limit switch 22 (optional) enables independent alarm signals. Initiating, start-up of the positioner as well as the demand for internal information can be made using the local keys 17 with indication given by LEDs 18. HART and FOXCOM versions: For the HART unit, start-up and the demand for internal information can be made using hand-held terminal or a PC. For a FOXCOM unit, a PC or I/A Series System may be used (see MI EVE0105 B-(en) and MI EVE0105 C- (en) for HART devices, see MI EVE0105 D-(en) for FOXCOM devices).

4 4 SRD991 MI EVE0105 A-(en) Digital mode During digital operation a DC voltage is provided at input w. On this voltage a FSK-signal is modulated. The modulation contains information (e.g. setpoint value), sent digitally to the control unit 11 across the FSK-unit 8. Inquiry commands enable information to be sent from the unit to the user. The remaining modes of operation do not differ from operation with an analog input Software Operation of the positioner is divided into individual operating modes. Operating modes may change depending on, for example, key commands or internal calculations. The different operating modes are described in abbreviated form below. In Appendix A the operating modes are shown graphically in a mode diagram. INITIALIZE: Upon power-up of the required operating voltage, several self-tests are conducted. Individual steps in the self-test process are indicated by the green LEDs. The duration is only a some seconds. If faults are recognized in the INITIALIZE mode, the device switches to FAULT mode. During commissioning (factory new units), Autostart mustbethefirstcommandtotheunit. Inthe Autostart process, the SRD991 automatically determines the mechanical stops and control parameters for the drive. If Autostart is not initiated, the SRD991 goes into the OUT SERVICE operating mode and waits for the start of the automatic calibration ( Autostart ). If Autostart has been completed and no other fault has been found, the unit automatically switches to the IN SERVICE mode. INITIALIZE can also be started manually with Reset (press keys M + UP + DN simultaneously). IN SERVICE: This is the normal operating mode; all LEDs are off. The positioner controls and simultaneously also carries out cyclical self-tests and valve diagnostics. Parameters can be changed (with local keys or by means of digital communication, if available). It is also possible to start the automatic calibration ( Autostart ) with local keys. OUT SERVICE: The positioner does not control. It holds the last setpoint value and waits for operator intervention, such as: Start of the automatic calibration CALIBRATION Start of valve diagnosis (via PC) DIAGNOSIS If a fault has been recognized during a self-test, the SRD991 will automatically go to the OUT SERVICE mode. CALIBRATE: Autostart or Short autostart is initiated in the CALIBRATE mode. In this process, the SRD991 automatically determines valve stem position data and control parameters for the valve system. When completed, the program automatically continues with IN SERVICE mode. DIAGNOSIS (in preparation) Valve diagnostic functions: Characteristic curve input signal vs. valve stem position using a slow ramp time. Step response test Max. stroke time (not controled) Characteristic curve input signal vs. output pressure (only with option built-in pressure sensors ) FAULT: Self-diagnosis has determined a critical internal fault. The red LED is on continuously, and the controller no longer controls. The control valve goes to the safe position determined by the drive spring (output pressure y1 is zero). This operating mode can be exited using INITIALIZE (switching power off and then on again, or with Reset ). FAILSAFE: This mode only applies to units having digital communication capability. Failsafe actions are configured by using software contained in HT991, ABO and IFDC. Details are provided in the menu on failure handling found in MI EVE0105 B-(en) for HART HT991 hand held terminal and MI EVE0105 C-(en) for HART ABO. The brief descriptions above are only intended to provide a quick overview on the mode of operation for the SRD991.. State diagrams for the unit versions SRD991 I: without communication SRD991 H: with HART communication SRD991 F/ -E: with FOXCOM communication are explained in greater detail in Appendix A. Definition of the LEDs and possible operator interventions are described in Chapter 8: START-UP.

5 MI EVE0105 A-(en) SRD LABELS Nameplate (Example) Without Ex-protection Nameplate (Example) Classified intrinsically safe by CENELEC Type of protection EEx ia MADE IN FRANCE SRD991 INTELLIGENTER STELLUNGSREGLER INTELLIGENT POSITIONER SER.No ECEP ZULUFT / SUPPLY : max. 6 bar ( 90 psi ) EINFACH / SINGLE EINGANG / INPUT : ma HART FOXCOM IT1 FOXCOM IT2 AMB.TEMPER. Tu : - 20 C C REV. 1 DOPPELT / DOUBLE MADE IN FRANCE (1) Model Code (see PSS EVE0105 A-(en)) Serial numberr ID for special engineered version SRD991 INTELLIGENTER STELLUNGSREGLER INTELLIGENT POSITIONER SER.No ECEP ZULUFT / SUPPLY : max. 6 bar ( 90 psi ) EINFACH / SINGLE DOPPELT / DOUBLE EINGANG / INPUT : ma HART FOXCOM IT1 FOXCOM IT2 AMB.TEMPER. Tu : - 20 C C TYPE BIA 637 EEx ia IIC T4 PTB Nr. Ex-96.D.2175 P REV. max. = 900 mw U max. = 30 V C i = 1,4 nf 1 (2) I max. = 130 ma L i = 0 mh Measurement point label (Example) Directly fixed or attached XXX 09/16 Nameplate (Example) Classified intrinsically safe by FM SRD991- SRD991- SRD991- SER.No Additional manufacturing data arestoredinthe software and are read via communication interface. See MI EVE0105 B-(en): HART via Hand terminal resp. MI EVE0105 C-(en): HART via PC. ECEP SUPPLY : max. 6 bar ( 90 psi ) SINGLE DOUBLE ma HART IT1 IT2 Umax = 30 V, I max = 130 ma, P max = 0,9 W AMBIENT TEMP.: - 20 C C INTRINSICALLY SAFE CL I, DIV 1, GP A, B, C, D; HAZ LOC; SEE ; (2) TEMP CODE T4 REV. NEMA TYPE 4 MADE IN FRANCE 1

6 6 SRD991 MI EVE0105 A-(en) 3 DESIGN a 1b a Cable gland 1/2"-14NPT 1b Cable gland PG Plug, interchangeable by Pos. 1 3 Screw terminals for input (w) 4 Ground connection 5 Female thread 1/4-18 NPT for output I (y/y1) 6 Female thread 1/4-18 NPT for air supply (s) 7 Female thread 1/4-18 NPT for output II (y2) 8 Direct connection hole for output I (y/y1) 9 Feedback shaft 10 Connection manifold for mounting to linear actuators 11 Connection base for mounting to rotary actuators 12 Travel indicator 13 Key UP 14 Key DOWN 15 Key M 16 Status display (1 red LED, 4 green LEDs) 17 Damping screw for output I 18 Damping screw for output II 19 Shaft for limit switch connection 20 Cover with window to Air vent, dust and water protected 22 Nameplate 23 Connections for current measurement, 2 mm dia. 24 Switch for current measurement 25 Connections for communication, 2 mm dia. 26 Arrow points to flat of feedback shaft

7 MI EVE0105 A-(en) SRD Accessories When mounting, check the proper seating of the O- rings and bolt on the accessories with the two M8 bolts. Unused outputs are closed by means of plastic plugs. 3x 1/4-18 NPT s y (y1) (y2) 2x 1/4-18 NPT s y Code LEXG -J Connection manifold for single acting positioner with pressure gauge for supply air s and output y s 2x 1/4-18 NPT y Code LEXG -F Booster for single acting positioner 3x 1/4-18 NPT 3x 1/4-18 NPT y2 3x G 1/8 for Gauge* y1 s Code LEXG -M Connection manifold for double acting positioner with pressure gauge for supply air s, outputs y1 and y2 * y2 y1 s Code LEXG -G Booster for double acting positioner * (y2) 3x 1/4-18 NPT y (y1) s Code LEXG -N Connection manifold for single or double acting positioner with threads G 1/8 for pressure gauge for supply air s, outputs y(y1) and (y2) (supplied without pressure gauge) 2x 1/2-14NPT 3x G1/4 y (y1) s y Code LEXG -H Booster for single acting positioner with twice the output air (y2) s Code LEXG -K Connection manifold with G 1/4 threads * Unused threads for pressure gauge are to be closed by means of lock screw Part No. SRU

8 8 SRD991 MI EVE0105 A-(en) 4 MOUNTING TO LINEAR ACTUATORS 4.1 Direct Mounting Siebe Control Valve Division linear actuators allow for mounting the SRD991 directly to the actuator yoke, eliminating one exposed pneumatic line to the actua- tor. Personnel safety and protection for the positio- ner is achieved with this design Preparation of the positioner Rotate the shaft stub of shaft 9 so that the flat on the shaft stub is perpendicular to the arrow 26 on the housing (detail see page 9). Fasten the feedback lever A to the shaft by means of spring washer and nut M8. 26 A M8 9 Applicable to ECKARDT and SCHMIDT linear actuators with a yoke prepared for direct mounting (e.g. actuator type PA200, PA350), the attachment of the positioner is accomplished by bolting it directly to the actuator yoke and by using the feedback lever for a direct mount (with attachment kit EBZG -D). The rear output I and the side outputs I and II are used as follows (see page 6) : Actuator single acting, spring force closes: The rear output I is used. The side output I is closed by means of a lock screw SRS Actuator single acting, spring force opens: The side output I is used. The rear output I is closed by means of a lock screw 2). Actuator double acting: The rear output I and the side output II is used. The side output I is closed by means of a lock screw. Pneumatic connections: Do not use Teflon tape for sealant. The fine fibres could disturb the function of the SRD991. Use only Loctite #243 for sealant 1). Screwtype glands for electrical connections are positioned on the side. Any idle female threads are closed by means of plugs. When putting on the housing cover note that the air vent should face-down (see photo above) Preparation of the actuator Screw in the carrier bolt B on the coupling piece K on the drive spindle S at the lower left and lock it by means of a nut M6. R M6 B K Mounting of the positioner Fasten the positioner to the upper part of the yoke using 2 spring washers and 2 screws M8 x 80, as shown above. The rear output I of positioner has contact to the air duct R in the yoke. Attention: Note the correct position of the O-ring on the yoke for the rear connection I! Note, the carrier bolt B is in the slot of the feedback lever A and the compensating spring F touches the carrier bolt. A B S 1) Apply only to male thread. 2) Although the output is without pressure it has to be tightly sealed by means of a lock screw in order to warrant protection class NEMA 4. Fig.: Feedback lever F

9 MI EVE0105 A-(en) SRD Mounting dimensions Feedback lever Code EBZG-A for mm travel Connection to yoke using the direct connection hole for rear output I (y/y1) Feedback lever Code EBZG-B for mm travel x M Carrier bolt for connection to valve stem O-Ring 10 x ,8.31 mm in M Direct Mounting arrangement for Siebe actuators Detail:shaftstub9 is perpendicular to the arrow 26 on the housing 9 26

10 10 SRD991 MI EVE0105 A-(en) 4.2 NAMUR Mounting Applicable to actuators with cast yoke or pillar yoke acc. to NAMUR (DIN IEC 534-6). Mounting the positioner with pneumatic connections on the left side and electrical connections on the lower right side, is shown below Preparation of the actuator Screw the carrier bolt to the stem connector and lock it by means of a counter nut. A carrier bolt with an adjustable length is used to be able to screw on various coupling pieces. H S K M6 It consists of a stud S, which is screwed into the coupling piece K (with 3 mm Allen key) and locked with a lock nut M6. The threaded sleeve H is screwed onto it and locked with a lock nut M6. Make shure that the bolt is adjusted to the right length! Fasten the mounting bracket to the left side of the yoke. For a cast yoke use a screw M8 x 30, forapillaryokeuse2u-boltsand2nuts. Attachment of the positioner to the actuator is made to the left using the mounting bracket and feedback lever for a NAMUR mount. Use: attachment kit EBZG -H for a cast yoke, or attachment kit EBZG -K for a pillar yoke. The side outputs I (or I and II, see page 6) are used. The rear output I is closed by means of a lock screw Part No. SRS Pneumatic connections: Do not use Teflon tape for sealant. The fine fibres could disturb the function of the SRD991. Use only Loctite #243 for sealant 1). Screw-type glands for electrical connections are positioned on the lower or right side. Any unused threaded holes are closed by plugs. When putting on the housing cover note that the air vent should face-down (see photo above) Preparation of the positioner Rotate the shaft stub of shaft 9 so that the flat on the shaft stub is perpendicilar to the arrow 26 on the housing (detail see page 9). Fasten the feedback lever A to the shaft by means of spring washer and nut M8. 9 A Mounting of the positioner Fasten the positioner to the mounting bracket using 2 spring washers and 2 screws M8 x 80. Note, the carrier bolt B is in the slot of the feedback lever A and the compensating spring F touches the carrier bolt. A B F Fig.: Feedback lever For optimum utilization of the positioner operating range, it is recommended the arrangement be adjusted according to the following procedure before fixing. At an actuator position in the middle of travel range, the feedback lever position should be perpendicular to the actuator stem and the angle range should be between and Procedure: Set the actuator to the middle of its travel range by supplying it with an independent pressure. Fasten the mounting bracket so that carrier bolt and the mark on mounting bracket are about the same distance from the valve body. Fasten the positioner to the mounting bracket so that a suitable angle range is selected. It is recommended that the pneumatic and electrical connections are made after adjusting the position. M8 1) Apply only to male thread.

11 MI EVE0105 A-(en) SRD NAMUR Mounting Dimensions mm in Mounting to cast yoke Mounting bracket x x x M Mounting to pillar yoke pieces Feedback lever Code EBZG-A for mm travel Carrier bolt for attachment to valve stem Feedback lever Code EBZG-B for mm travel 7, , , , , ,

12 12 SRD991 MI EVE0105 A-(en) 5 MOUNTING TO ROTARY ACTUATORS 5.1 Type of mount Applicable to rotary actuators that meet the VDI/VDE 3845 standard for mounting. Installation position of positioner: Mount the positioner so that the pneumatic connections are in the same direction as the longitudinal drive axis of the actuator as shown in the photograph below. Attachment of the positioner to the actuator is made by using the rotary adaptor kit EBZG -R. Either the side outputs I (or I and II) are used and the rear output I is closed by means of the lock screw Part No. SRS Pneumatic connections: Do not use Teflon tape for sealant. The fine fibres could disturb the function of the SRD991. Use only Loctite #243 for sealant 1). Screw-type glands for electrical connections are used as needed. Any unused threaded holes are closed by plugs. Caution! Prevent accumulation of water in the instrument in this mounting position by sealing cable entry against water. Provide a continuous supply of dry instrument air Preparation of the positioner Place the washers 5 and the rotary adaptor 3 on the shaft stub 9 of the positioner against the stop. Note : When the product temperature rises, the drive shaft 1 becomes longer. Therefore, the rotary adaptor 3 must be mounted so that approx. 1 mm (0.04 in.) of clearance results between the drive shaft 1 and the rotary adaptor 3. This is achieved by placing an appropriate number of washers 5 on the shaft stub 9 before attaching the rotary adaptor. Two washers should result in a clearance of 1 mm. For attachment to a clockwise or right turning actuator secure one set screw 4 in the threaded hole R of the rotary adaptor against the flat on the shaft stub. For attachment to a counter-clockwise or left turning actuator secure one set screw 4 in the threaded hole L of the rotary adaptor against the flat on the shaft stub. Attention: Do not secure the set screw against the thread on the shaft stub. Assembly: ) Apply only to male thread.

13 17 13,5 MI EVE0105 A-(en) SRD Preparation of the actuator Screw the bolt 2 provided into the actuator drive shaft 1 to center the rotary adaptor 3. Fasten the bracket to the rotary actuator. The slot on the actuator shaft stub should be in the position shown in the diagram below for the actuator at zero pressure and for a zero angle requirement. counter- clockwise (left) turning actuator Slot position for zero angle and zero pressure clockwise (right) turning actuator Rotary Actuators Mounting Dimensions Rotary adaptor R 4,5 +0,2.18 M4 L ,2 +0, mm in Mounting of the positioner Before mounting the positioner, rotate the positioner shaft 9 so that the arrow on the adaptor lines up with the arrow on the positioner housing. Now place the positioner on the actuator so that the four ridges of the adaptor 3 are inserted into the slot on the actuator drive shaft 1. Be sure that shafts 1 and 9 are mounted co-axially. Fasten the positioner to the bracket by means of 4lockwashersand4screwsM6x12. 4x ,5.26 R Attachment diagram for bracket

14 14 SRD991 MI EVE0105 A-(en) 6 SYSTEM CONFIGURATION The safety requirements in Chapter 10 must be observed! When using Communication (an a.c. signal which modulates on the 4-20 ma signal), it must be ensured that the connected outputs, buffer amplifier and barriers are compatible with the frequency ranges used. In addition to the load, the a.c. impedances requirements must be met. Therefore, it is recommended that only the specified amplfier, barrier and configuration device be used. To prevent crosstalk between lines and reduce disturbances through electromagnetic influences, it is recommended that twisted-pair shielded lines be used, with a diameter of AWG and a max. capacity of 100 pf / m. The line capacities and connected devices may not exceed the maximum values listed for a particular HART or FOXCOM protocol. The various SRD991 versions must be connected as described in the Chapter numbers listed below. SRD991 I without Communication Setp ma not intrinsic. safe Chap Setp ma intrinsic. safe Chap SRD991 H with HART Communication Setp ma not intrinsic. safe Chap Setp ma intrinsic. safe Chap SRD991 E/-F with FOXCOM Communication Setp ma not intrinsic. safe Chap Setp ma intrinsic. safe Chap Setp. digital not intrinsic. safe Chap Setp. digital intrinsic. safe Chap (Here Setp ma or digital means that the setpoint value at the input of the SRD991 is present as either an analog current signal or as a digital signal.) The following symbols are used: HT991 Hand held terminal HT991 (intr. safe) ABO/MOD HT991 ABO/MOD PC with Software ABO991 and intrinsically safe Modem MOD991 HT991 or PC with ABO991 and MOD991 IFDC PC with Software IFDC and -PC10- Modem PC10 All components connected to the SRD991 in the hazardous location must be approved for use at hazardous locations. Their limits may never be exceeded. These limits must also be observed when connecting other capacitance, inductive, voltage or current sources. 6.1 Without Communication Setpoint value analog Configuration only with local keys Non- intrinsically safe operation The SRD991 can be directly connected to the ma output of a process control system (PCS) or a controller. PCS, Controller SRD mA Intrinsically safe operation The SRD991 can be connected to the intrinsically safe ma - output of a process control system or a controller. If no intrinsically safe output is available, a suitable buffer amplifier or a safety barrier must be connected. With intrinsically safe operation the certification requirements for the connection must be satisfied. Controller/PCS output is intrinsically safe : PCS, Controller intrinsic safe 4-20mA Controller/PCS output is not intrinsically safe: PCS, Controller not intrinsic safe 4-20mA R 2 AC/DC 24V 4-20mA The following buffer amplifier/ barrier safety devices may be used: Device Input Load R2 Drives load on output TV Ω 600 Ω TV Ω 650 Ω MUS Ω 500 Ω MTL Ω 650 Ω MTL787S+ 780 Ω 650 Ω MTL... are barriers of Measurement Technology Limited. R L RL = 450 ΩLoad SRD991 R L RL = 450 ΩLoad hazardous location SRD991 R L RL = 450 ΩLoad hazardous location

15 MI EVE0105 A-(en) SRD With HART Communication Setpoint value analog Configuration with HART The SRD991 is designed for HART-conformity (current sink with an impedance Zi of about 250 Ω and DC load of 600 Ω). The supply unit should fulfill the requirements for HART- conformity (current source with an impedance Z1 of about 50 kω at 500 Hz and about 3 kω at 10 khz). For connection to one positioner an impedance Z1 of > 1.8 kω in the frequency range from 500 Hz to 10 khz is sufficient A total of all device and line capacitance must be < 200 nf Non-intrinsically safe operation The SRD991 can be connected directly to the output of the process control system or controller. If the output impedance Z1 conforms to HART, a hand-held terminal or a PC-modem can be connected for communication at any place in the line. Installation example: Direct Connection PCS, Controller If the output impedance Z1 is not sufficient Z1 should be increased by insertion of an impedance-converter (resistor Rv, two-pole impedance, buffer amplifier, see 6.2.2). For communication the hand-held terminal or the PC-modem can be connected at any place following the converter. Measuring Communication Signal If a reliable communication signal can not be received, it is advisable to check the level with an oscilloscope. The first data block always comes from the configurator and the second block is the reply from the SRD991. HART Z 1 Configurator transmits SRD991 transmits Rv HT991 ABO/MOD measured at configurator: at least 350 mvpp at least 120 mvpp 4-20mA LL LL: Line length to Configurator For HART max m (6000 ft.) SRD991 Z i Zi 250 Ω measured at SRD991: at least 150 mvpp at least 300 mvpp Intrinsically safe operation A suitable buffer amplifier with an intrinsically safe output and conforming to HART protocol must be connected. For communication an intrinsically safe HT991 hand-held terminal can be connected at any location following the buffer amplifier. For the TV228, a PC modem MOD991 can be connected to the sockets at the front of the TV228. Installation example: Insertion of the TV228 Output intrinsically safe PCS, Controller 4-20mA ABO/MOD TV mA HT991 SRD991 Zi 250 Ω If the output of the process control system or controller and the buffer amplifier input comply with HART, then the hand-held terminal or the PC-modem can be connected at any location before or after the buffer amplifier. For the TV228, a PC modem MOD991 can be connected to the sockets at the front of the TV228. Installation example: Insertion of the TV228 Output intrinsically safe PCS, Controller Z 1 Z1 > 470 Ω HT991 R 2 The following buffer amplifier/ barrier safety devices may be used: Z 3 R2 100 Ω Z3 > 400 Ω 4-20mA DC 24V ABO/MOD TV228 (R2) Z 2 DC 24V Z mA hazardous location LL Device Input Load R2 Drives load on output Z2 [Ω] Z3 [Ω] TV Ω 650 Ω MTL Ω 650 Ω 550 Zi MTL787S+ 930 Ω 650 Ω 530 Zi MTL4046 If a different intrinsically safe power supply unit than the TV228 buffer amplifier is used, the connection to the SRD991 and the hand-held terminal or PCmodem must be checked for conformance to intrinsic safety before commissioning. LL Z i HT991 SRD991 Z i Zi 250 Ω hazardous location

16 16 SRD991 MI EVE0105 A-(en) 6.3 With FOXCOM Communication Setpoint value analog (4-20 ma) Configuration with FOXCOM (IT1) The SRD991 is designed for FOXCOM-conformity (current sink with an impedance Zi of approx. 500 Ω and d.c. load of 600 Ω). The power supply unit must be a power source with an impedance Z1 of approx. 50 kω at 500 Hz and approx. 3 kω at 10 khz. A total of all device and line capacitance must be < 200nF Non- intrinsically safe operation The SRD991 is connected to the output of a process control system or controller. If the output impedance Z1 meets the requirements listed above, a PC with IFDC* software can be connected at any place in the lineforcommunicationviaapc10modem. Installation example: Direct Connection PCS, Controller Z 1 Rv IFDC -PC mA If the output impedance Z1 is not sufficient, it should be increased to the required value by inserting an impedance converter (resistor Rv, two-pole impedance, buffer amplifier, see 6.3.2). For communication the hand-held terminal or the PC- modem can be connected at any place downstream of this subassembly. Measuring Communication Signal If a reliable communication signal can not be received, it is advisable to check the level with an oscilloscope. The first data block always comes from the configurator and the second block is the reply from the SRD991. LL SRD991 Z i Zi 500 Ω Intrinsically safe operation If the output impedance Z1 of the PCS or controller is sufficiently high, a suitable buffer amplifier with an intrinsically safe and FOXCOM- conformed output should be connected after the controller. For communication a PC with IFDC* software can be connected any place ahead of the buffer amplifier using a PC10 modem. Installation example: Insertion of the TV228 Output intrinsically safe PCS, Controller Z 1 Z1 > 350 Ω The following buffer amplifier/ barrier safety devices may be used: Device IFDC -PC mA Z2 480 Ω Input Load R2 TV228 (R2) Z 2 DC 24V Z mA Z3 > 480 Ω Drives load on output Z2 [Ω] SRD991 Z3 [Ω] TV Ω 650 Ω MTL Ω 650 Ω 800 Z MTL787S+ 980 Ω 650 Ω 780 Z If a different intrinsically safe power supply unit than the TV228 buffer amplifier is used, the connection to the SRD991 and the PC modem must be checked for conformance to the intrinsic safety and FOXCOM compatibility before commissioning. LL Z i Zi 500 Ω hazardous location FOXCOM (IT1) 4-20 ma analog Configurator transmits SRD991 transmits measured at configurator: at least 350 mvpp at least 75 mvpp measured at SRD991: at least 75 mvpp at least 350 mvpp LL: Line length to Configurator For FOXCOM IT1 max m (6000 ft.) *IFDC = Intelligent Field Device Configurator

17 MI EVE0105 A-(en) SRD With FOXCOM Communication Setpoint value digital Configuration with FOXCOM (IT2) The SRD991 is designed for FOXCOM- conformity (with an impedance of approx. 500 Ω).Thepower supply unit must have an impedance of approx Ω. A total of all device and line capacitances must be <60nF Non- intrinsically safe operation The SRD991 is connected to the output of the I/A Series System for process control. It can be configured using the I/A series system, or a PC with IFDC software can be connected at any place in the line using a PC10 modem. Installation example: Direct Connection I/A Series System FOXCOM Z1 FBM43 P u1 u1 = 24 V Z1 > 250 Ω Digital signal IFDC -PC10- Note: Do not change configuration with IFDC while control from I/A System is online. Switch first to offline from I/A System. LL SRD991 Measuring Communication Signal If a reliable communication signal can not be received, it is advisable to check the level with an oscilloscope. The first data block always comes from the configurator and the second block is the reply from the SRD991. Z i Zi 500 Ω Intrinsically safe operation A suitable buffer amplifier with an intrinsically safe and FOXCOM-conform input and output must be connected downstream. For communication a PC with IFDC software can be connected any place ahead of the buffer amplifier using a PC10 modem. Installation example: Insertion of the MTL4048 Output intrinsically safe IFDC -PC10- I/A Series System FOXCOM Z1 FBM43 P u1 Z1 > 250 Ω Digital signal u2 MTL4048 Z 2 Z2 > 800 Ω LL SRD991 Note: Do not change configuration with IFDC while control from I/A System is online. Switch first to offline from I/A System. The following buffer amplifier/ safety devices may be used: Device Z2 Z3 MTL4048 Zi+300Ω Zi Ω MTL787S+ Zi+280Ω Zi Ω If a different intrinsically safe power supply unit than the one specified above is used, the connection to the SRD991 and the PC modem must be checked for conformance to the intrinsic safety and FOXCOM compatibility before commissioning. Z 3 u2 - u3 ~ 4.5 V u3 Digital signal Z i Zi 500Ω hazardous location FOXCOM digital (IT2) Configurator transmits SRD991 transmits measured at configurator: at least 350 mvpp at least 75 mvpp measured at SRD991: at least 75 mvpp at least 350 mvpp LL: Line length to Configurator For FOXCOM IT2 max. 600 m (2000 ft.)

18 18 SRD991 MI EVE0105 A-(en) 7 ELECTRICAL CONNECTION The safety requirements in Chapter 10 must be observed! Unused cable glands should be closed off. Feed in the cable through the gland 1. The gland is suitable for cable diameters of 6-12 mm ( in). Observe the tightness of the cable entry. Make the electrical connection of the input line at the screw terminals 3 marked with 11+ and 12.The terminals are suitable for wire cross-sections of up to mm 2 (22-14 AWG). Connection of options (see terminals below item 3 ): SRD991-xxM without options SRD991-xxP with 2 binary/ limit values SRD991-xxB 2L sensor-/ contact input SRD991-xxQ 1 Pos.feedb. 1Alarm Mark Signal Mark Signal Mark Signal Mark Signal 11 + Inp. w 11 + Inp. w 11 + Inp. w 11 + Inp. w 12 Inp. w 12 Inp. w 12 Inp. w 12 Inp. w 81 + AB EB AB1 82 AB1 14 EB1 82 AB1 83+ AB2 15+ EB2 31+ AI 83 AB2 16 EB2 32 AI For enhancement of EMC-protection by connection to a local ground the internal and external ground terminal 4 can be used. At the tip jacks 23 +and23 the input current can be measured. For that purpose the switch 24 should be on 1. In normal position ( ON ) the both tip jacks 23 are short circuited. Version HART or FOXCOM: At the tip jacks 23 + and 25 a hand-held terminal or a modem can be connected for communication. The tip jacks fit plugs with a diameter of 2 mm (0.08 in). Inp.w AB EB AI Input Setpoint value (Analog 4..20mA or digital) Binary output ext. supplied Binary input for ext. switch Analog output ma for position feedback Note: When connecting shielded cable connect the cable shield only to thesystem!donotconnect the cable shield to the SRD991! Optional equipment limit switch (see terminals 40 ) SRD991-xxxT,U via inductive sensor SRD991-xxxV via microswitch Mark Signal Mark Signal 41 + AG1 41 (NC contact 1) 42 AG1 42 (Center tap 1) 43 (NO contact 1) 51 + AG2 51 (NC contact 2) 52 AG2 52 (Center tap 2) 53 (NO contact 2) NC NO AG 12 normally closed normally open Binary output ext. supplied

19 MI EVE0105 A-(en) SRD Jumper Settings Depending on the version of the SRD991, the following jumpers are located on the electronics unit (Electronics unit removed, see Chapter 12.3) For FOXCOM version: Input is current input ma for analog setpoint value (FOXCOM 4-20 ma / IT1) Input is voltage input V for digital setpoint value (FOXCOM digital / IT2) If Watchdog detects a fault in the electronics: Output y1 goes pressureless Output y1 (y2): Hold last value

20 20 SRD991 MI EVE0105 A-(en)

21 MI EVE0105 A-(en) SRD START-UP 8.1 General Before starting the positioner, an input signal and air supply must be connected. The supply air connection must have sufficient capacity and pressure of bar ( psig) and should not exceed the maximum operating pressure of the actuator. Damping for the pneumatic output (throttle screw 17 for single or 17 and 18 for double acting actuators) is set to the operating value at the factory. Normally no change is necessary (Exception see Chap , menu 8). Setting the SRD991 functions is accomplished by means of a local key-pad when the cover is off. All important functions can be selected (see Chap. 8.2). Versions with HART or FOXCOM communication have an extended function range. Setting functions in the communication mode is accomplished by means of a hand-held terminal, a PC or an I/A Series system (FOXCOM). In this case the local key-pad at the positioner can be locked-out to the user (see Chap. 8.4). Attention: Configuration using local keys or the communication interface may interfere with operation of the actual process! During configuration it is recommended that there is no flow through the valve. For the first start-up it is recommended that an Autostart or a Short autostart is selected. To initiate Autostart using the local key-pad see Chap , Menu 2: Autostart or Menu 10: Short autostart. To initiate Autostart using HART or FOXCOM see Chapter 8.4. For Autostart or the Short autostart an input signal current of more than 5 ma is needed. After selecting the gear ratio of the travel indicator 12 put the pointer disc on the gear shaft in the desired position and fit to the mark on the window in the housing cover (see Chapter 8.3). When putting on the housing cover note that the air vent should face-down. If there is no response using the local key-pad (or hand-held terminal) make shure that the Write Protection is not set! Remove the write protection using WPP991 software (HART) or IFDC software (FOXCOM) 8.2 Setting by means of local keys Setting up the positioner functions is carried out by using the local keys 15 (M), 13 (UP), 14 (DOWN). Attention: Do not touch behind the positioner housing while operating the keys! DANGER OF INJURIES! The following states are indicated by the LEDs 16 : LEDs red green Description M INIT: LEDs indicate initializing phase of positioner requires a few seconds NORMAL OPERATION x x x x MENU: xxxx = menu - y y y y PARAMETER yyyy to menu FAULT ( / x =flashing / y =constant light) During start-up the positioner should be in the operating mode Normal operation Operating modes for local key operation Local key-pad operation is only possible in the operating modes IN SERVICE, OUT SERVICE or FAILSAFE (see Chapter 1.3.3). INITIALIZE: Positioner is not ready for operation. Several selfcheck tests are conducted. In a few seconds the unit automatically switches to the mode Normal operation. Normal operation: IN SERVICE, OUT SERVICE or FAILSAFE Switching to the operating mode Menu is allowed (if not locked by write protection). Menu (see table 2): Menu selection is made. Parameter (see table 3): Parameters of the selected menu item are set or checked. Autostart or Short Autostart function may be initiated. FAULT: Positioner is not ready for operation after self-test. Failure in the electronics is the most probable cause (see Chapter 11: Trouble-shooting guide). On the following pages, a brief description for menu items, parameters, key-pad operation and LED indication is listed in the tables. The menu items are described in Chapter

22 22 SRD991 MI EVE0105 A-(en) Operation with local keys Autostart or Short autostart i.e. IN SERVICE Enter menu save and back to menu back UP M M DN Menu Ch.curve Enter Para.* DN UP M Abort without save Parameter linear equal perc inv.equ.perc. special UP DN Save* selection DN UP * Local keys DN and UP simultaneously Table 2: Menu red LEDs flash green M Menu Description Angle position 1 linearization 2 Autostart 3 Positioner Action 4 Characteristic curve 5 Travel limit / Cutoff 6 reserved 7 8 Test of pneumatic operation Test of control performance A/D - tuning 9 input current 10 Short autostart Enter the mode Menu mode by pressing the M key. The red LED flashes alternately with the green LED1, which indicates the Menu item 1. Select the desired Menu item by pressing the UP (or DOWN)key. Each press of the key moves one menu item forward (or back). The flashing green LEDs indicate the selected menu item. (LED test before configuration: Move form menu item 1 to 4 and inspect that each LED lights.) Simultaneously pressing the UP and DOWN key confirms the selected menu item and enters the Parameter change mode for the selected menu item. The red LED goes off and the remaining green LED indicate the parameter or state to be set. To set a parameter see Table 3: Parameter To leave the Menu mode at any time, press the M key. All LEDs go off and the positioner returns to the Normal operation mode

23 MI EVE0105 A-(en) SRD Table 3: Parameter from Menu: 1 Angle position linearization LEDs lights red green M Parameter or state Reaction to key stroke Linear actuator UP: next Par. DN: last Par. M: return to Menu DN+UP: saves set parameter and returns to Menu Rotary actuator 2 Autostart Ready DN+UP: starts the function IMMEDIATELY : Start, geometry : Ramps automatic run 1) Steps : : Control parameter At end, automatically changes to normal operation End 3 Positioner Action Normal UP: next Par. DN: last Par. M: return to Menu Inverse DN+UP: saves set parameter and returns to Menu 4 Characteristic Linear UP: next Parameter curve DN: last Parameter Equal percentage Inverse equal perc. Special M: Abort and return to Menu DN+UP: saves set parameter and returns to Menu 5 Travel limit / Lower limit value UP: next Parameter Cutoff DN: last Parameter Cutoff M: Abort and return to Menu Upper limit value DN+UP: saves set parameter and returns to Menu 6 reserved 7 Test of pneumatic IP-Module curr.0 % Each UP: plus approx. 3%; 100% + UP: 0 % operation 2) Each DN: minus approx. 3%; 0% + DN: 100 % 32 x pressing of key UP M: Abort and return to Menu DN+UP: no function 100 % 8 Test of control performance 9 A/D-tuning input current Position 0 % 12.5 % 25 % 37.5 % 50 % 62.5 % 75 % 87.5 % 100 % Each UP: plus 12.5%; 100% + UP: 0 % Each DN: minus 12.5%; 0% + DN: 100 % M: Abort and return to Menu DN+UP: no function 4 ma UP: next Par. DN: last Par. M: return to Menu DN+UP: saves set parameter and returns to Menu 20 ma 10 Short autostart Ready DN+UP: starts the function IMMEDIATELY Start, geometry Automatic run 1) At end, automatically changes to normal operation End DN+UP means: press local keys DOWN and UP simultaneously. In the moment when the parameters are saved the LEDs go off for ashorttime. 1) If aborted with Reset (keys M+DOWN+UP simultaneously), the parameters determined up to that point are saved. 2) See explanations on page 25, menu 7

24 24 SRD991 MI EVE0105 A-(en) Description of menus Menu 1: Angle position linearization Menu item 1 is used to adapt the positioner to the type of actuator used, i.e. linear or rotary. For standard attachment to linear actuators, set Linear (LED2 lights). For standard attachment to rotary actuators, set Rotary (LED3 lights). Menu 2: Autostart Menu item 2 automatically configures the positioner to the valve/ actuator combination. Geometric data such as open and closed position are determined and optimum control parameters are recorded automatically. Attention: Autostart overwrites the last control parameters! Select autostart by simultaneously pressing the UP and DOWN key, when the green LED1 and LED4 lights are on. The autostart process can now be tracked by the position of the green LEDs. This process can take several minutes. LED1 lights: Direction of travel, as well as open and closed valve positon are determined automatically by running the full stroke or rotary angle once or several times. LED2 lights: The travel direction, open and closed positions are then stored and the previous values are overwritten. A ramp function for the valve is then initiated. LED3 lights: A step function for the valve is initiated. LED4 lights: Based on the data obtained above, the control parameters are calculated. All four LEDs off: Control parameters are stored and the previous control parameters are overwritten. The positioner has switched back to Normal operation mode. Stopping the automatic run is possible using the Reset command (simultaneously press the M, UP and DOWN key). If Autostart is terminated when the LED2 light is on, the previous control parameters are preserved. If Menu item 10 Short Autostart is used, only the valve travel direction, with open and closed positions are recorded and no control parameters are changed. Menu 3: Positioner Action Set the positioner action to Normal (LED1 lights), if an increasing pneumatic output signal is required for an increase in signal input. Set the action to Inverse (LED4 lights), if a decreasing output is required for an increase in signal input. 100% Stroke / Rotation angle 0% Menu 4: Characteristic curve A relationship between the input signal to the positioner and valve stem position or angle is established. Linear (LED1 lights) Applies a linear relationship for the input signal to the positioner verses valve stem position to the particular valve chosen. In this case, the valve will have the characteristics of the type trim installed. Equal percentage (LED2 lights): Constructs an equal percentage relationship for the positioner input signal verses valve stem position. In this case, inverse equal percentage valve characteristics become more linear. Inverse equal perc. (LED3 lights): Constructs an inverse equal percentage relationship for the positioner input signal verses valve stem position. In this case, equal percentage valve characteristics become more linear. Special (LED4 lights): Customer defined characteristic curve with a maximum of 22 points. If not configured, the output = 0. Menu 5: Travel limit / Cutoff (For FOXCOM IT2 not by using the local key-pad.) Allowes for presetting one or two software generated limits for the stroke or rotary angle of the actuator and for presetting an input signal cutoff value. When the input signal exceeds this cutoff value, the output signal changes to the max. value (if spring opens) or min. value (if spring closes), depending on the set-up, thereby increasing actuator force for a tight closing of the valve. Rotary actuators always turns to the right. Hysteresis is set to establish dynamically stabile transitions. See graph. Lower limit value Cutoff Upper limit value 4 ma Input signal 20 ma

25 MI EVE0105 A-(en) SRD For any change to the travel limits or cutoff values, the desired signal in the range of ma ( %) must first be set and measured. Lower limit : When the LED1 light is on, the unit is ready for setting the lower travel limit. Set the desired value at the input and confirm it by simultaneously pressing the UP and DOWN key. The previous value is overwritten. The default setting is 0%. Upper limit : When the LED4 light is on, the unit is ready for setting the upper travel limit. Set the desired value at the input and confirm it by simultaneously pressing the UP and DOWN key. The previous value is overwritten. The default setting is 100%. Cutoff : When the LED2 light is on, the unit is ready for setting the cutoff value. Set the desired value at the input and confirm it by simultaneously pressing the UP and DOWN key. The previous value is overwritten. The Cutoff function is only effective when the value set is both higher than 0% and the value set for the Lower limit. The default setting is 0%. Menu 6: Reserved for future use. Menu 7: Test of pneumatic operation (This menu item is used for bench testing) The current to pneumatic conversion is checked by sending a known current directly to the IP Module. Current to the IP Module is increased in 32 steps of approx. 3% each by pressing the UP key. A decrease in current is made by pressing the DOWN key. Measuring the output pressure should result in the characteristic pressure distribution for the IP Module shown in the graph. The pressure increase may be more or less steep and may start earlier or later, depending also on the air supply pressure. 6 4 [bar] After leaving this menu item (by pressing the M key or by simultaneously pressing the UP and DOWN key) the unit operates again with the original set point. Menu 8: Test of control performance Control performance is tested by activating step functions and observing step response behaviour. To input a step function, the UP and DOWN keys are used. Each press of the UP key increases the output of the positioner by 12.5%. Each press of the DOWN key decreases the ouput by 12.5%. At 100% output pressing the UP key once results in a return to 0% output. At 0% output, pressing the DOWN key once results in a jump to 100% output. Control performance improvements may be achieved by completing a full auto start (see Menu item 2). For small actuators an improvement may also be achieved by increasing the damping at the pneumatic output (right turn of the throttle screw 17 for single acting actuators or 17 and 18 for double acting). After leaving this menu item (by pressing the M key or by simultaneously pressing the UP and DOWN key) the unit operates again with the original set point. Menu 9: A/D - tuning input current Configured at factory. Menu 10: Short autostart Short autostart is used to record geometric data such as travel direction and the open/closed valve stem position or angle. No position ramp function is executed, therefore no changes are made to the control parameters. Start the Short autostart cycle when the green LED1 and LED4 lights are on by simultaneously pressing the UP and DOWN keys. Activation and the duration of the cycle is indicated by LED1. LED1 lights: Travel direction, open/closed valve stem or angle positions are determined by the positioner automatically running the full stroke or rotary angle once or several times. All four LEDs off: Travel direction, open/closed valve stem or angle positons are stored and the previous values are overwritten. The positioner is then automatically placed in Normal operation mode. To stop of the automatic run use Reset (press the M, UP and DOWN key simultaneously). All the previous values remain valid. If there is no response using the local key-pad (or hand-held terminal) make shure that the Write Protection is not set! Remove the write protection using WPP991 software (HART) or IFDC software (FOXCOM)

26 26 SRD991 MI EVE0105 A-(en) 8.3 Adjustment of the travel indicator The mechanical travel indicator is coupled to the feedback shaft of the positioner by a gear. The gear has two selectable ratios* 1 : 2 and 1 : 6. Selecting gear ratio: For rotation angles of the feedback shaft less than 30 select a ratio 1 : 6. This gear selection amplifies the feedback shaft rotation angle six times and for example, a 20 angle is shown as 120. For rotation angles greater than 30 select a ratio of 1 : 2. This gear selection amplifies the shaft rotation angle by a factor of two and for example, a 45 angle is shown as 90. For rotary actuators the rotation angle is equal to the rotation angle of the actuator. Consequently, a 90 rotation angle will result in a 180 display angle for the1:2gearratio. For linear actuators the rotation angle is determined by travel span and feedback lever length. In this case, an exact 180 display angle can only be achieved for a 30 rotation angle usinga1:6gear ratio. If any other rotation angle results, either the closed or full open positon can be set to be indicated at, for example 0 or 180. However, if the closed position is chosen for display, then the full open display position angle is dependent on travel span, feedback lever length and gear ratio. If the full open position is chosen for display, then the closed positon angle becomes dependent. Setting gear ratio: Remove the pointer disc 12a. Pull out the pin 12b for a ratio 1 : 2 or push in the pin for a ratio 1 : 6. Use a smooth turning operation to free the gears and to set the pin 12b against the stop. See figure. 12a 12b 1 : 2 1 : 6 Turn the pointer disc 12a to the desired position, put it on the gear shaft against the stop and pinch the wire ring for secure coupling. * The values are rounded for making easier calculations. The exact ratios are 1 : 1.83 and 1 : 6.28.

27 MI EVE0105 A-(en) SRD Setting by means of hand-held terminal, PC or I/A Series System See Master Instructions: MI EVE0105 B-(en) MI EVE0105 C-(en) HART by means of hand-held terminal HART by means of PC 9 SHUT-OFF Before shutting-off the unit, disconnect the supply air and the electrical input signal. After disconnecting the electrical input signal the last confirmed configuration of the positioner is preserved in the memory.

28 28 SRD991 MI EVE0105 A-(en) 10 SAFETY REQUIREMENTS 10.1 Accident prevention This device complies with regulations for the prevention of accidents Power-Driven Work Aids (VGB 5) of 1st October Electrical safety This instrument satisfies the conditions for safety class III according to EN or IEC Any work on electrical parts must be done by qualified personnel if any supply is connected to the instrument. The instrument must be used for its designated purpose and connected in accordance with its connection diagram (see Chap. 6 and 7). Locally applicable installation regulations for electrical equipment must be observed, e.g. in the Federal Republic of Germany DIN VDE 0100 resp. DIN VDE The instrument contains no built-in fuses. The instrument must be operated with safety extralow voltage SELV or SELV-E. Safety precautions taken in the instrument may be rendered ineffectual if the instrument is not operated in accordance with the Master Instructions. Limitation of power supplies for fire protection must be observed due to EN , appendix F or IEC Explosion protection (Only if ordered) Technical data for explosion protection see Product Specifications Sheet PSS EVE0105 A-(en). For installations located in explosive atmospheres, all relevant national regulations and installation conditions must be observed, e.g. in the Federal Republic of Germany ElexV and DIN VDE Attention: When repairing explosion-protected equipment, observe the national regulations. Repairs involving parts must be manufacturer s original parts. The following applies to the Federal Republic of Germany: Repairs involving parts required for explosion protection must either be carried out by the manufacturer or by authorized personnel and confirmed by certificate EMC and CE For notes regarding Electromagnetic compatibility EMC and CE labels see Poduct Specifications Sheet PSS EVE0105 A-(en). In order to ensure EMC protection, the following is mandatory: - the black electronic cover made of conductive plastic has to be screwed to the housing - the sheet metal angle must have contact at the bottom of the electronics with the housing (spring cog or EMC protection screws) Lightning Protection The isolation of the current circuit to the housing has been tested up to AC 500 V. In the field external lightning protection are to be provided to ascertain that the voltage is not exceeded.

29 MI EVE0105 A-(en) SRD TROUBLE-SHOOTING GUIDE Positioner with local key configuration, without HART- or FOXCOM-communication: Fault detected by self test Possible cause Solution After power-up or Reset any combination of LEDs are ON Actuator does not react, red LED light permanently on Self test detected failure in the electronics Failure in the electronics (during initialising the RAM / at cyclical RAM-test / in the EPROM) Configuration not allowed Fault in configuration data Reset again send device to manufacturer actuate Reset (simultaneously pressing of the M, UP and DOWN key) or switch the input signal off and on again send device to manufacturer a) actuate Reset b) switch back to base configuration and configure again c) send device to manufacturer Fault Possible cause Solution Autostart not completed Actuator volume too large stop Autostart and carry out Short autostart, see Chap , Menu 10 Supply pressure too low check supply air Actuator does not react to a change in the input signal Actuator does not attain the closed or opened position Unstable behaviour, position control circuit oscillates Positioner not operational using key pads Feedback lever wrong mounted for linear actuator Adaptor piece attached incorrectly (rotary actuator) Pneumatic output to actuator closed or not tight Failure in the positioner Autostart not carried out Positioner is not in Normal operation mode Failure in the pneumatic part IP-module defective Pneumatic amplifier defective Supply pressure too low Travel limit is set Angle position linearization, positioner action or characteristic curve is set incorrectly (e.g. Special but values are missing) Filter in supply connection blocked IP-module defective Autostart incomplete Small actuator volume Friction on valve too great Internal control parameters incorrect for this application No input signal at 11+, 12 Instrument version with HART- FOXCOM-communication: local key operation software locked Failure in the positioner Unproper Reset occured check the correct feedback lever mounting, see Chap. 4 check attachment, see Chap. 5 check pneumatic connections, see Chap. 4.1, 4.2 or 5.1 carry out Autostart again, see Chap. 8.1 and 8.2.2, Menu 2 and 10 send device to manufacturer carry out Autostart, see Chap. 8.1 and 8.2.2, Menu 2 and 10 switch the positioner to Normal operation mode, see Chap check pneumatic operation, see Chap. 8.1 and 8.2.2, Menu 7 change IP-module change amplifier check supply air check settings, see Chap and 8.2.2, Menu 5 check settings, see Chap and 8.2.2, Menus1,3,4 change filter change IP-module carry out complete Autostart, see Chap. 8.1 and 8.2.2, Menu 2 increase damping at pneumatic output, see Chap , Menu 8 loosen packing gland slightly or replace insert control parameters (only with HART or FOXCOM) Connect input signal see MI EVE0105 B-(en) HART-HHT MI EVE0105 C-(en) HART-PC send device to manufacturer actuate Reset (see above)

30 30 SRD991 MI EVE0105 A-(en) 12 MAINTENANCE 12.1 General The SRD991 positioner requires little maintenance. When replacing components during repair work, the safety requirements in Chap. 10 must be observed! 12.2 Supply filter replacement An obstructed supply filter can be replaced. Unscrew the air supply fitting, remove the filter and exchange the filter with a new one Removal of the electronics unit* Pull off the pointer disc 12a. To remove the electronics unit 40, loosen the 7 screws on the front. Attention: For an early-series unit, remove 2 EMC protection screws S on the back of the housing by first removing the seal and then the screws. Be sure not to lose the toothed washers! Disconnect the plugs 41 and 42 from the board. Do not use tools to remove plugs, because components could be damaged. Tight-fitting plugs can be easily removed by tilting them inward before pulling them off. Connect the plugs 41 and 42 to the new electronics unit 40 and attach the new unit by using the 7 screws on the front. Attention: If the 2 EMC protection screws S were present, they must be replaced together with the toothed washers and sealed off. EMC protection is not ensured for this SRD991 series, if the screws are not replaced properly! S 12a 40 After replacing the electronics unit 40 or the feedback unit 49, an angle calibration should be carried out using ABO991 (HART), IFDC (FOXCOM) or the local key pad for units without communication (benchwork, see Chap.12.5) * On SRD991 with pressure sensors option, see Chap Pressure sensors