Operating Instructions
Contents
1. 19 9 FURTHER INFORMATION nnsaannnnnnnnnnnnnnnnnnnnnnnnennennnnnnnennnnnnnnnnnnnennnnnnnnnnnnnnn euneun ennnnnnn 20 10 SMC CONTACT 21 i 22 Page 2 of 22 UMIO 7 21 SMC Operating Instructions Safety recommendations Please read the operating manual carefully before starting up the SI unit retain the operating manual at hand for later reference Please observe all safety precautions given in the manual as well as the following safety recommendations A Attention In order to avoid damage to the SI unit which could possibly result in system faults the 51 unit must not be installed in the following areas areas where the SI unit can come into contact with water areas where the temperature of the SI unit would exceed 50 C EX areas A Attention Switch off both the compressed air and the supply voltage before installation of and maintenance on the SI valve manifold Only qualified control and automation technicians are permitted to install and maintain the equipment Pay attention to the technical data when installing the SI unit and the valves The mains supply circuit for the valves must conform to the PELV Protection Extra Low Voltage requirements in IEC 364 4 41 Allowabl2. 2 4 1 3 mm The mechanical dummy jack Address range 0 31 decimal Do not use the address 0 for normal slave addressing The address 0 is reserved for automatic addressing via the master Page 15 of 22 IIIUULLGOVV UMIL LO J 7 SIMIC Operating Instructions 7 1 Address setting via the handheld programming device A special dummy jack is required for the ADDR1 2 sockets on the front cover plate when addressing via the hand programming device HP When programming using the HP the true AS Interface master is dicsonnected from the slave being addressed and the HP device assumes the role of master During this procedure all other slaves in the circuit remain connected to the true master After successful completion of addressing via the HP the ERR LED will go off a Models having AS interface EX12 SAS4 and EX1 2 SAS5 Step 1 Remove the dust cover ADDR Step 2 Plug the cable jack of the HP into the ADDR socket Step 3 Set and transmit the slave address into the AS Interface circuit using the HP Step 4 Remove the cable jack from the ADDR socket Step 5 Replace the ADDR dust cover b Models having two AS Interface chips only EX12 SAS2 Step 1 Remove the dust covers of ADDR 1 and 2 Step 2 Plug the cable jack of the HP carefully into the ADDR1 socket Step 3 Perform the slave address setting of slave chip no 1 using the HP range 1 to 3
3. 8 single solenoid valves 18 pin connector common ground 2 For EX12 SAS4 and 5455 For EX12 SAS2 b For 2 or 4 double solenoid valves 18 pin connector Valve 0 Solenoid a 0V common ground El For EX12 SAS4 and SASS For EX12 SAS2 Page 12 of 22 PAULUGLUL VULIDUL IIIUULLGOVV UMIL 37 eae 7 SIMIC Operating Instructions 6 Technical specification of the EX12 SAS Serial interface protocol According to AS International Association Specification Complete Specification Version 2 0 Slave protocol chip ISA3 compatible AS Interface slave chip 52701 AS Interface power supply voltage 26 5 V DC to 30 5 V DC at the AS Interface slave via yellow AS Interface standard cable 2x1 5mm Valve solenoid power supply voltage 24 V DC 10 21 6 V DC to 26 4 V DC except for EX12 SAS3 via optional black AS Interface cable 2 x 1 5 Note Use only power supply units conforming to PELV standard 64 4 41 Load current per valve solenoid max 100 mA 2 1 W rated power except EX12 SAS3 no black cable max 70 mA 1 5 W for EX12 SAS3 Valve solenoid driver circuit p channel MOS FET transistor driver common ground earth Reverse incorrect Provided by a series wired diode on the positive connection protection side of the AS Interface power supply Surge over voltage protection Provided via a Zener suppressor diode between the AS
4. BS5 6XX Tel 01179 522155 Fax 01179 522186 Cumbernauld RC SMC Pneumatics UK Ltd 1 Carradale Crescent Broadwood Bus Park Cumbernauld Glasgow G68 9LE Tel 01236 781133 Fax 01236 780611 Ipswich RC SMC Pneumatics UK Ltd Unit 6 amp 7 Alpha Bus Park Whitehouse Road Ipswich Suffolk IP1 5LT Tel 01473 240040 Fax 01473 747707 Poole Regional Centre SMC Pneumatics UK Ltd Unit 4 Acorn Bus Centre Ling Road Poole Dorset BH12 412 Tel 01202 732233 Fax 01202 737743 SMC Eire SMC Pneumatics 11 Ltd 2002 Citywest Business Campus Naas Road Saggart Dublin Tel 353 1 4501822 Fax 353 1 4502710 Coleshill RC SMC Pneumatics UK Ltd 24 The Courtyard Gorsey Lane Coleshill Warwicks B46 1JA Tel 01675 467177 Fax 01675 465073 Droitwich RC SMC Pneumatics UK Ltd Unit 3 Wassage Way Hampton Lovett Ind Estate Droitwich Worcs WR9 ONX Tel 01905 774544 Fax 01905 797343 Manchester RC SMC Pneumatics UK Ltd 3 Modwen Road Waters Edge Business Park Ordsall Lane Salford Manchester M5 3EZ Tel 0161 8767371 Fax 0161 8767372 Sheffield RC SMC Pneumatics UK Ltd Unit 4 North Anston Bus Centre Houghton Road North Anston Sheffield 31 7JJ Tel 01909 565504 Fax 01909 569717 Page 21 of 22 FAVLUAGLY L VELLOVI ULLILD SMC Operating Instructions NOTES Page 22 of 22
5. by the system controller SPS PC or controller and not by the master The master however notices after at most 5 ms max cycle time if a slave trips out The AS Interface telegram conveys the message between the master and the slaves in both directions First the master output data is sent to the slaves write then the slave input data per slave and within one telegram is returned to the master read AS Interface telegram consists of the master call the master idle time master pause the slave response and the slave pause see below AS interface telegram From master to slave and from slave to master for a single slave access master call master pause slave response slave pause ST CB A4 A3 A2 A1 A0 1413 12 11 IO PB EB 3 10 BT 12 11 IO PB EB 1BT ST start bit is always 0 BT 1 bit time ca 1 5 EB end bit is always 1 PB parity bit even parity 14 10 5 bit from master to slave 13 14 bit from slave to master A4 A0 5 bit for slave address 00000 1 1 1 1 1 binary corresponds to 0 31 decimal CB control bit 0 for data parameter address access 1 for command access For a description of the master refer to the master manufacturer s handbook where details of the particular AS Interface master used can be found The master answers this telgram cyclically for all connected and activated slave addresses The main component of the AS Interface is a special slave chip which can control a 4 inputs only
6. plastic thread could be damaged srews AS interface connector cover d AS interface cable Fig 1 Applicable to the yellow cable the green PWR LED and the EXT LED light up when the power supply to the AS Interface is switched on Applicable to the black cable if provided only the EXT LED lights up when the valve power supply is switched on The ERR LED does not light up as this would imply a communication error between the AS Interface master and the AS Interface slave s only if EX12 housing is mounted on DIN rail Page 11 of 22 FAVLUAGLY LT VELLOVI ULLILD Lv Twila SMC lt 7 Operating Instructions 7 Identify both AS Interface connectors yellow and black on the white labels found on the top covers of the AS Interface connectors Set only free addresses for new slaves the default address is 0 and transmit the information via the ID and I O code to the master ID code 0 I O code 8 i e only solenoid outputs 5 Valve connector pin assignment The SI valve manifold has been internally pre wired The 18 pin connector joins the AS Interface unit EX12 SAS to the valve block The pins have been pre assigned for the 4 or 8 in the case of the EX12 SAS2 model output drives Pins 17 and 18 are for the common ground earthing and pins 9 16 are not connected The wiring of the SI valve manifold can take various forms depending on the application a For 4 or
7. 1 decimal Select slave addresses not already used in the AS Interface circuit Step 4 Remove the cable jack from the ADDR1 socket Step 5 Plug the cable jack of the HP carefully into the ADDR2 socket Step 6 Perform the slave address setting of slave chip no 2 using the HP Use a different address to that used in step 3 range 1 to 31 decimal Step 7 Remove the cable jack from the ADDR2 socket Step 8 Replace the ADDR1 and ADDR2 dust covers on the cover plate Page 16 of 22 Lv eae 9 Operating Instructions 7 2 Addressing via the AS Interface master The following procedure is recommendet for addressing via the AS Interface master a Models having one AS Interface chip EX12 SAS4 and EX12 SAS5 No dummy jack is required when setting addresses via the master as only AS Interface chip one AS Interface slave is visible to the master Programming is done in the normal manner Note Refer to the AS I Master operating manual b Models having two AS Interface chips only 12 5 52 The EX12 SAS2 unit is pre set with the address 0 i e both internal slaves have the address 0 As the address 0 may only be present once in the circuit as seen by the master the dummy jack provided must be used to isolate the chip which is not being programmed step 1 Connect the yellow AS Interface cable and the black cable if provided step 2 Remove the dust covers from AD
8. C Electromagnetic Compatibility emission The standard AS Interface cable enables simple and quick installation by using an insulation piercing connection For the data decoupling of the yellow cable a special AS Interface power supply device must be used This AS Interface power supply is directly connected to the yellow cable ASI ve and ASI ve line and is positioned as near as possible to the master in order to minimize the voltage drop In addition to the yellow cable mentioned above some AS Interface units are provided with similar optional black cables for additional actuator power supply Only power supply devices conforming to the PELV Protection Extra Low Voltage standard should be connected to the black cable s Ordinary 24V DC transformers must under no circumstances be used The SMC interface units which are provided with an additional 24V DC power supply for electrical components black cable connection can be used for emergency OFF applications The yellow and black cables are completely independent of one another i e when the 24V DC supply black cable is switched off the AS Interface circuit yellow cable remains in operation Because of their special geometrical asymmetry and size both the yellow standard cable and the optional black AS Interface cable are mechanically protected against incorrect polarity The AS Interface is a single master multiple slave system i e there is only one master controlling se
9. DR1 and ADDR2 step 3 Insert the dummy jack into the ADDR2 socket and set the address of the AS Interface chip no 1 slave 1 step 4 Remove the dummy jack from the ADDR2 socket insert the jack into the ADDR 1 socket and set the address of the AS Interface chip no 2 slave no 2 step 5 Remove the dummy jack from the ADDR1 socket Step 6 Replace the ADDR1 and ADDR2 dust covers on the plate Page 17 of 22 FAVLUAGLY LT VELLOVI ULLILD SMC Operating Instructions 8 Diagnostic and safety functions Y 8 1 ERROR LED red lamp ERR The red ERR LED error LED indicates a communication error between the master and slave A communication error arises when the master despite repeated calls fails to receive a correct answer from the slave When a communication error arises the master reports a configuration error and removes the failed slave from the circuit in order to ensure that the remaining slaves in the circuit can continue functioning The master is not able to determine whether the error arises from the slave itself or from a line disturbance Because of their internal watchdogs SMC slaves EX12 SAS can recognize that no telegrams are being sent and announce a communication error via the ERR LED In this case it is up to the user to decide whether the valve actuator should be reset to a preset state or should be left in the last operating position see Section 8 2 On error cor
10. FAULUGLUL VULIDUL UMIO AWTU AUU J 7 21 SIMIC Operating Instructions Operating Instructions Actuator Sensor Interface Units AS Interface EX12 SAS2 EX12 SAS4 EX12 SAS5 0 1 2 Page 1 of 22 IIIUULLGOVV 2 5 Operating Instructions CONTENTS Page 1 GENERAL INFORMATION ABOUT THE 5 4 2 OVERVIEW OF EX12 SAS DEVICES creer rcc crc err 8 4 INSTALLATION OF THE EX12 SAS 6 222222 222 2 11 5 VALVE CONNECTOR PIN 5 422222 2 2 44 71 07 1 12 6 TECHNICAL SPECIFICATION OF THE EX124 SAS1I ceres 13 7 SLAVE ADDRESS SETTING PROCEDURRE 224 22 22224 10 15 7 1 ADDRESSING VIA THE HANDHELD PROGRAMMING DEVICE 16 7 2 ADDRESSING VIA THE AS INTERFACE 4040 0 nnne nnn 17 8 DIAGNOSTIC AND SAFETY 6 0 2 22 2 222 2 2 2 18 8 1 ERROR LED 556 temen QR 18 8 2 CLEAR HOLD Rl 18 8 3 LEDS FOR POWER SUPPLY GREEN LEDS PWR AND EXT
11. Interface positive and negative voltage supply terminals ID Code 0 hex 0 8 hex i e only outputs no sensor inputs Default addresses 0 dec for EX12 SAS4 and EX12 SAS5 2 x 0 dec for EX12 SAS2 2 slaves Parameter bits of AS Interface Not connected not used slave protocol chip Safety fall back function a Switch position CLEAR Default all valves are switched OFF in the event of a communication error b Switch position HOLD all valves retain their last valid ON OFF position as per last valid communication telegram LED indicators a PWR green for AS Interface voltage Page 13 of 22 9 Watchdog timer Opto coupler Connectors Insulation piercing connection of yellow and black AS interface cables EMC test standards Protection class Operating temperature AS international Association test certificate Applicable SMC series valves Single solenoid valves LAL J Operating Instructions supply typically 30 V DC b EXT green for valve solenoid voltage supply 24 V DC nominal c ERR red for communication error One provided per interface chip having a delay time of ca 50 ms In the event of a communication error the red ERR LED lights up After error correction the ERR LED automatically goes out Provided between AS Interface and valve solenoid driver a Yellow and black AS Interface cable b Socket
12. LEAR HOLD switch and both addresses before installation of the AS Interface cable e Ensure that the total length of the yellow AS Interface cable does not exceed 100m per AS Interface power supply unit f Ensure that 24 V DC 10 is available at the slave for valve solenoid power supply This could possibly require a higher voltage at the power supply unit as the voltage drop is directly proportional to the length of the yellow AS Interface cable 0 After switching on the AS Interface power supply the green PWR LED should light up The red ERR LED might light up for a few seconds depending on the actual master used Once the master has recognized all the slaves the red ERR LED will go out h If when switching on the power supply the mode switch is in the HOLD position all valves will initially go to the OFF position no current flow i Both AS Interface cables yellow and black are protected against both incorrect polarity and incorrect insertion If the cables are incorrectly connected no damage to the SMC AS Interface unit will occur as the impedance and phase values will be out of range In the worst case e g max cable length of 100 m and 31 AS Interface slaves communication between the other participants will only be disturbed by reversing the black and yellow cables j Itis recommended that new slaves be installed and address programmed one after the other and that the ID code and code of each new sl
13. V DC for solenoid power supply Use the correct connector for additional solenoid power supply black Do not use 30 V supply for the black AS Interface cable Note that the valve solenoid voltage in the circuit must be a bit higher than the target voltage 24 V DC directly at the valve The voltage drop depends only on the current consumption in the black cable Page 19 of 22 Lv eae 7 lt A SMC Operating Instructions 9 Further information ID code Ohex I O code 8hex is valid for all three EX12 SAS types Note that for model EX12 SAS2 the master has to be given the ID and I O codes twice as there are two slaves b Yellow and black AS Interface cable AS Interface and valve solenoid voltage supply The AS Interface unit can be disconnected from the yellow and black AS Interface cables when the power supply yellow and black is switched ON This also applies to the 12 5 55 without black cable The remaining AS Interface circuit is not adversely affected by this C For models supplied with black AS Interface cable for additional valve solenoid power supply Disconnection of the valve manifold board should only be done once the solenoid power supply is switched OFF Caution Use only voltage supply units which conform to PELV standard 364 4 41 for 24V DC solenoid power supply this does not apply to model EX12 SAS5 d Set the position of the C
14. ave be checked against the master configuration k Asthe AS Interface is an open system accessories available on the open market can be installed Refer to the certified devices in the CD ROM product catalog of your national AS Interface manufacturers association Most available AS Interface accessories simplify usage and are easy to install Page 20 of 22 Y FAVLUGLY LT VELLOVI ULLILD 77 SIC Operating Instructions Note that some passive housings of common AS Interface I O modules are designed for yellow and black AS Interface cables while others are designed for 2 x yellow cables for branching 10 SMC contact addresses SMC UK Belfast RC SMC Pneumatics UK Ltd Unit 3 Shaftesbury House Edgewater Road Belfast 9JQ Tel 01232 778414 Fax 01232 778422 Crawley RC SMC Pneumatics UK Ltd 9 Pelham Court Pelham Place Broadfield Crawley W Sussex RH11 9AZ Tel 01293 614094 Fax 01293 614135 Gateshead RC SMC Pneumatics UK Ltd Unit B6 Marquis Court Marquis Way Team Valley Trading Est Gateshead Tyne amp Wear 11 ORU Tel 0191 4872040 Fax 0191 4872041 Milton Keynes RC MK Regional Centre SMC Pneumatics UK Ltd Vincent Avenue Crownhill Milton Keynes Bucks MK8 Tel 01908 265247 Fax 01908 262705 Bristol RC SMC Pneumatics UK Ltd Unit 5 East Gate Office Centre Eastgate Road Eastville Bristol
15. b 4 outputs only c 4 inputs 4 outputs simultaneously i e within one telegram In case c a system having 31 slaves will have a maximum of 248 binary inputs and outputs This chip is provided with 4 parameter bits for non cyclic setting of special slaves If these parameter bits are used the master sends asynchronous parameter telegrams between normal data cycles Note EX12 SAS units do not use the parameter bits of the internal AS Interface chips Page 5 of 22 Y FAVLUAGLY LT VELLOVI ULLILD 77 SIC Operating Instructions The SMC AS Interface slaves are provided with an internal watchdog timer WDT This WDT provides a safety fall back function i e in the event of a communication error the outputs will be reset to a definite state normally all OFF and the red ERR LED will light up The slave address which is non volatilely stored can be changed automatically via the master or manually via a handheld programming device HP The handheld programming device replaces the actual AS Interface master during address programming It is not absolutely necessary to use the handheld programming device to set the addresses as each slave can be directly programmed by the master Many slave addresses cannot be set simultaneously one telegram can only be addressed to a single slave 5 bits are required for one slave address 4 0 implies 2 32 slaves The address 0 is usually reserved
16. e valve voltage range is 21 6v to 26 4v DC Use only certified AS Interface mains supply circuits for the voltage supply to the AS Interface Donot open and try to repair the equipment yourself nor attempt to modify it SMC are not liable for any damage resulting from such activities Page 3 of 22 FAVLUAGLY LT VELLOVI ULLILD 5 lt 7 Operating Instructions 1 General information about the AS Interface The AS Interface system replaces the expensive parallel wiring of single distributed sensors inputs and actuators outputs Distributed here means decentralized local inputs and outputs I Os using only a few bits 1 4 bits Most inputs and outputs I Os are binary or discrete and are located beneath the well known fieldbus level according to the OSI ISO reference model Here binary discrete or digital means simple ON OFF operations such as for example the 24 V DC ON OFF control of the SMC solenoid valves without transmission of analog values via the ASI network Compared with other fieldbuses the AS Interface is both relatively easy to use and cost effectivel The system does not require termination resistors or baud rate setting The data and energy transmission is done via a simple 2 wire cable Yellow AS Interface standard cable via a connector and an APM Alternating Pulse Modulation modulation using sin pulses which have fewer harmonics and low EM
17. first start up of the slaves it is possible that the red ERR LEDs go on for a few seconds they will go off again after successful activation Page 18 of 22 37 eae 7 SIMIC Operating Instructions 8 3 LEDs for power supply green LEDs PWR and EXT PWR power monitors the AS Interface voltage power supply 26 5 V 31 6 V at the slave yellow cable and EXT external the additional valve solenoid power supply 24V 10 black cable EXT is completely independent of PWR If the black cable provided is not connected the solenoids will have no power supply EX12 SAS4 and SAS2 In the case of model EX12 SAS5 without black cable the valve solenoids are supplied with power from an internal 24V voltage regulator via the yellow cable If the voltage falls below a certain value the two green LEDs will not switch off completely but will glow weakly If this occurs ensure that the following voltages are present especially at the slaves and the black cable a yellow AS Interface standard cable AS Interface voltage at ASI unit 29 5 31 6 V AS Interface voltage at slave 26 5 31 6 V max voltage drop of 3 V 100 m b optional black AS Interface cable not with EX12 SAS5 valve solenoid voltage at the device 23 6 28 5 V DC 26 V DC nominal valve solenoid voltage at the slave 21 6 26 4 V DC 24 V DC 10 Notes Avoid voltages greater than 26 4
18. for a new AS Interface slave which has not previously been connected to the AS Interface net The slave address 0 can only be used once within the net The address 0 is used for automatically setting the address via a master telegram In this case the master allocates the new slave the lowest unused address between 1 and 31 Note The AS Interface master only permits one address 0 Each EX 12 SAS2 device contains two ASI slaves as well as two addresses both of which are preset to 0 For this reason use of the blind connector supplied by SMC is essential when first starting up the system via the master see 7 2 Page 6 of 22 FAVLUGLY LT VELLOVI ULLILD 5 lt 7 Operating Instructions Overview of common AS Interface features Medium for data energy Unshielded 2 wire AS Interface cable yellow AS Interface standard cable Insultion piercing connections according to IEC 60352 6 Number of participants Up to 4 sensors and 4 actuators per slave max 124 bidirectional max 248 binary participants Adresses Each slave is allocated a definite address Address setting by means of the master or a programming g a handheld programming device and cable jack immediate response from slave bidirectional 4 bits pure data per slave and message Device interface 4 configurable data interfaces as inputs or outputs or bidirectional plus 4 parameter outputs and 2 control outputs Str
19. obe to the host or to the slaves Master functions Initialization of the network identification of participants acyclic setting of the slave parameter valves diagnosis of thg net and AS Interface slaves error messages to the host setting of addresses in replaced slaves Notes 4n addition to its slave address every certified slave has a fixed and non volatile ID and 0 code Identification and Input Output Code according to the AS Interface Association for slave identification by the master The ID 1 0 code and the address are non volatilely stored in an internal EEPROM after power OFF Only the slave address can be changed by the user via the master or a handheld device EX12 SAS devices are not provided with sensor inputs Page 7 of 22 UMIL LAL tea 7 SMC Operating Instructions 2 Overview of EX12 SAS devices The SMC actuator sensor interface AS Interface models EX12 SAS4 EX12 SAS2 and EX12 SAS5 described here are designed for use with SMC non IP65 VQ and SY manifolds The table below shows a type overview of SMC non IP65 AS Interfaces fe 0 1 2 for housing Solenoid outputs 24 8 4 Schematic diagrams Fig 1a attachment plate valves yellow black yellow black only yellow no black end plate single solenoid valves single solenoid valves single solenoid valves 1 2 3 4 1 2 3 4 5 6 7 8 1 2 3 4 double
20. rection the red ERR LED automatically goes off and the slave is brought back into operation It is not necessary to switch off the circuit and restart it again 8 2 CLEAR HOLD Switch The CLEAR HOLD switch is a two position switch on the cover plate its purpose is to provide a safety fall back function If the communication between the master and the slave is interrupted the slave internal watchdog timer indicates an error red ERR LED lights up In the event of such an error the open shut status of the valves is pre determined by the CLEAR HOLD switch setting on the cover plate 1 CLEAR In the event of a communication error all valves are switched off valves OFF and ERR LED ON 2 HOLD There 2 modes when ERR LED ON a real communication error all valves retain their previous valid ON OFF status b when using the HP device not a communication error Note CLEAR HOLD switch is only active when the red ERR LED lights up If the HOLD position is selected the valves initially go to the OFF position when the AS Interface power supply is first switched on The WDTs are reset after power ON and set if no master call is made to the slave within a period of ca 50 ms On resetting the AS Interface master access to the slave is again opened After eliminating the cause of the communication error red ERR LED goes off the master regains control of the solenoid outputs Depending on the master used during the
21. s for handheld programming device used to set addresses Two jacks for EX12 SAS2 ADDR1 2 One jack for EX12 SAS4 and 5 55 ADDR Note A special dummy jack 1 3 is necessary for programming the EX12 SAS2 via the AS interface master According to IEC 60352 6 Emission according to EN50081 1 Interference according to EN50082 2 IP20 0 50 C Provided by the AS Interface test laboratory in Leipzig Germany VQ1000 2000 Negative common polarity SY 3000 5000 Negative common polarity max 4 for EX12 SAS4and 5 55 max 8 for EX12 SAS2 For future information on SMC valves and valve connection terminal boards refer to SMC valve catalogues Page 14 of 22 UMIO 7 21 SMC Operating Instructions 7 Slave address setting procedure There are two methods of setting the slave addresses 1 Using the AS Interface master 2 Using the handheld programming device When using automatic programming via the master address 0 the mechanical dummy jack must be used to disconnect one of the two AS Interface chips of the EX12 SAS2 from the yellow AS Interface cable No dummy jack is required for the 12 5 54 and 5 55 versions For 0 1 2 Model number Address programmed via AS Address programmed via Interface master bus hand programming device and dummy jack EX12 SASA es ye 2 f using dummy jack 12 5455 _______
22. series Page 9 of 22 FAVLUGLY LT VELLOVI 5 Operating Instructions 3 Components on the cover plate simplified overview not to scale Green PWR LED All types Green LED for AS Interface power supply yellow cable Red ERR LED All types Red LED for communication error watch dog green EXT LED EX12 SAS4 and SAS2 Green LED for valve solenoid power supply 24VDC PELV ____ ee O ADDR1 ADDR2 one socket EX12 SAS4 Jack sockets for handheld programming device for jack sockets SAS5 address setting 2 slave addresses as there are 2 two sockets EX12 SAS2 ASI chips ADDR 1 for chip no 1 or solenoid outputs 0 1 2 3 ADDR2 for 2 solenoid outputs 4 5 6 and 7 Solenoid output no 0 is assigned to the first Socket after the device CLEAR HOLD switch All types Mode switch CLEAR HOLD CLEAR in the event of a communication error all valves are switched to the OFF position HOLD in the event of a communication error all valves remain in their current ON OFF positions e AS Interface connector All types for the yellow cable left Connector for the black EX12 SAS4 and SAS2 cable right actuators Page 10 of 22 7 lt 7 SMC Operating Instructions 4 Installation of the EX12 SAS slaves We recommend the following installation procedure 1 Ensure
23. solenoid valves 1 2 double solenoid valves double solenoid valves 1 2 1 2 3 4 The following is valid for all three EX12 SAS types ID code Identification Code 0 hex Input Outout Code 8 hex i e outputs only no sensor inputs Default address of EX12 SAS4 and SAS5 1 AS Interface chip 0 dec Default address of EX12 SAS2 2 AS Interface chips 2 x 0 dec Page 8 of 22 Lv eae 7 SMC Operating Instructions If sensor inputs are required use a generic AS Interface 1 0 module All EX12 SAS models are provided with ADDR sockets for connection to the handheld programming device for the setting of addresses using a special 1 3 mm jack Overview of models numbers SMC Max no of No of AS Interface Additional 24 V DC Model number single double chips or slave Solenoid power solenoids addresses supply black cable EX120 SAS4 4 2 1 yes EX121 SAS4 EX122 SAS4 EX120 SAS2 8 4 EX121 SAS2 EX122 SAS2 EX120 SAS5 EX121 SAS5 EX122 SAS5 Overview of the EX 12 frame housing Three different frames housings of tyoe EX12 are available each suitable for one SAS type i e there are 3 x 3 9 different EX12 SMC AS Interface devices listed above EX120 0 for direct mounting without DIN rail VQ valve series EX121 1 for mounting on DIN rail with ribbon cable SY series 122 2 for mounting on DIN rail without ribbon cable SY
24. that the position of the CLEAR HOLD switch on the cover plate is correct CLEAR In the event of a communication error all valves are switched OFF HOLD In the event of a communication error all valves retain their current setting 2 Connect the SMC valve manifold connecting plate to the AS Interface unit via the 18 pin connector on the side and lock the connector using the stopper clip at the rear 2 Place the ASI unit on the DIN rails and connect it to the SMC valve manifold mounting plate using the 18 pin connector Finally tighten the securing screws Note dfthe unit has been supplied pre asssembled to the manifold ignore steps 2 amp 3 3 Clamp the yellow and black AS Interface cable if provided in the recess in the underside of the AS Interface connector Fig 1 Notes AS Interface connector cover can only be mounted one way round Because of the asymmetrical shape of the AS Interface cable profiled the cable can only be inserted in one way Make sure that the connecting cable seats properly in the socket Fig 1 Before doing any installation work check that the cables are long enough 5 Press the front cover of the AS Interface connector downwards into the socket until the first mechanical locking stop engages Fig 2 6 Carefully tighten both screws 2 screws per AS Interface connector until the second mechanical locking engages Fig 3 Note Do not over tighten the metal screws the
25. veral slaves in an AS Interface net A maximum of 31 slaves can be connected to one master within an AS Interface net Both the master and the slaves are connected via the yellow AS Interface standard cable The maximum length of the yellow cable without a repeater is 100 m which includes the stub lines and all branch lines of the AS Interface net free topology The maximum length of the black cable depends on the power consumption of the actuators and is normally shorter than the yellow cable The voltage directly at the actuators must be confirmed to be within the allowable voltage range The AS Interface master sends as many telegrams as there are connected and active AS Interface slaves in the net Each slave is sequentially and cyclicly accessed by these telegrams Page 4 of 22 ULLILD Lv Twila SMC 21 Operating Instructions starting with the slave with the lowest active address For the master there are as many slave addresses as there are AS Interface chips connected and activated in the net The time required to access all active slaves is the data cycle time approx 5 ms fora maximum of 31 slaves The access time of all active slaves is fixed or determined real time ability and is proportional to the number of activated slaves If the number of activated slaves is halved the access time is also halved 5 ms 15 31 approx 2 4 ms The physical system is controlled
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