System Components Liquiphant M (NAMUR)/PROFIBUS-PA interface FXA 164

Transcription

1 Technical Information TI 343F/00/en Operating Instructions System Components Liquiphant M (NAMUR)/PROFIBUS-PA interface FXA 164 With intrinsically safe signal circuits for the connection of up to four Liquiphant M sensors with NAMUR output (EN 50227) Application Intrinsically safe powering of limit switches (sensors) in explosion hazardous areas as well as the transmission of the signal status to a PROFIBUS-PA or PROFIBUS-DP system. Features and Benefits Integration of Liquiphant M limit switches with electronic insert FEL 56 with NAMUR output into PROFIBUS-PA segments. Four galvanically isolated inputs Auxiliary energy supplied from bus PROFIBUS-PA connection via M20x1.5 cable gland or M12 connector. Endress +Hauser The Power of Know How

2 Identification Document TI 343F/00/en identification Date of issue Product type Liquiphant M (NAMUR)/PROFIBUS-PA interface Product name FXA 164 Manufacturer Endress+Hauser Application Limit signal evaluation Connection of up to four Liquiphant M limit switches with NAMUR output to a PROFIBUS-PA segment, where appropriate in explosion hazardous areas. Function and System Design Equipment architecture The measuring system comprises: interface FXA 164 with up to four Liquiphant M limit switches with electronic insert FEL 56 segment coupler PROFIBUS-PA/PROFIBUS-DP PROFIBUS-DP Class 1 master (e.g. PLC) if appropriate, PROFIBUS-DP Class 2 master (e.g. Commuwin II) PROFIBUS-DP Class 1 master, e.g. PLC PROFIBUS-DP Class 2 master, e.g. PC with Commuwin II PROFIBUS-DP Segment coupler of link FXA 164 NAMUR signal PROFIBUS-PA Liquiphant M with FEL 56 electronic insert plant grounding system Measuring principle Sensors Galvanic isolation The interface FXA 164 supplies power, provided by the segment coupler and drawn from the bus, to the limit switch via a two-wire cable. Depending on whether it is covered or not, the limit switch outputs a predefined current along the same cable. Short-circuiting or cable breakage is identified when the current lies outside the predefined ranges. The interface converts up to four limit signals into a PROFIBUS-PA signal that is read in cyclically by the PROFIBUS-DP master. Liquiphant M level limit switch with FEL 56 electronic insert. Between the input circuit and power circuit of the interface. 2

3 Input Measured variable Current along the two-core cable to the limit switch. Measuring range Detection range for signal "Low" 0.2 ma 1.2 ma Detection range for signal "High" 2.1 ma 3.0 ma Detection range for cable breakage 0 ma 0.2 ma Detection range for cable short-circuit > 3.0 ma Important: Check the output signal of the Liquiphant M limit switch, because this has a switch-over mode for the current signal. Electrical connection FXA 164 Input 1 Input 2 Input 3 Input limit signal Liquiphant M limit switch (NAMUR) e.g. e.g. e.g. e.g. FEL 56 FEL 56 FEL 56 FEL Connecting cable Two-core cable, core cross-section max. 2.5 mm², strands in ferrules to DIN Max. 30 m or 20 ohm/core Specifications for operation in explosion hazardous areas Max. 7.9 V, max. 36 ma, max. 70 mw on the two-core cable. Maximal permissible external capacitance C o and inductivity L o : Explosion group CENELEC, Groups CSA/FM, C o L o IIC A-B 8.8 µf 25 mh Output Output signal Signal status to PROFIBUS master using cyclic services Signal on alarm Change from "GOOD" to "BAD" Data structure Up to 4x two bytes, depending upon configuration, Byte 1: signal status, Unsigned8 0 = "Low", 1 = "High" Byte 2: validity, Unsigned8 00 Hex BAD 40 Hex UNCERTAIN 80 Hex GOOD Baudrate kbit/s Electrical connection Segmentcoupler EEx ia + 1) For grounding instructions see BA 198 or certificate 2) The version with M12 connector is supplied already wired (PA, ground) 3) It is recommended that the bus be connected via a T-box 4) The polarity of the PA connections is not important to operation plant grounding system T-Box next PA device Ground the screening of the PA cable 1 PA+ 2 PA 3 4 (PA+) (PA ) FXA 164 Possibility to route the cable to the next device on the bus plant grounding system 3

4 Output (continued) Connecting cable Twisted, screened pairs to IEC , Core cross-section max. 2.5 mm², strands in ferrules to DIN or cord sets with M12 connector Care should be taken regarding the electrical continuity of the cable screening and the termination of the bus, see Operating Instructions BA 198F. Cable length Max. length from interface to T-box: 30 m for EEx ia dependent on number of bus participants for non-hazardous applications. Bus length max m for EEx ia max m for non-hazardous applications see BA 198F for conditions and calculation examples Grounding see Certificate or BA 198F Basic current max. 29 ma, independent of the number of Liquiphant M limit switches Fault current max. 5 ma Power up response When the power is switched on, the limit switch outputs an alarm signal and the interface output assumes the validity status BAD. After max. 2 s it assumes the validity status GOOD. Operating Conditions Installation Installation instructions Location Bus connection The device may be installed, connected, commissioned, operated and maintained by qualified and authorised personnel only, under strict observance of these operating instructions, any relevant standards, legal requirements, and, where appropriate, the certificate. Check that the power is switched off before connecting the limit switches. Further information on the installation and commissioning of a PROFIBUS-PA segment is to be found in BA 198F Max. 20 m from mounting point of the Liquiphant M If the interface is not directly connected to a T-box, it is recommended that the spur be kept and short as possible. Environment Ambient temperature range Ambient temperature limits Storage temperature Degree of protection Type of protection Electromagnetic compatibility 25 C +60 C 25 C +60 C 25 C +60 C IP 65 to EN EEx ia IIC Interference immunity: to EN Interference emission: to EN EMC Test Procedures see TI 241F 4

5 Mechanical Construction Design Cable entries (with cable gland) Terminals Address switch Dimensions Junction box for wall-mounting (204 mm x 82 mm) by means of 4x M6 screws with removable cover. 4x M16x1.5 (4...8 mm) for connection of the limit switch 1x Pg13.5/ M12 connector or 1x M20x1.5 ( mm) for PROFIBUS-PA connection 1x M6 screw terminal for grounding the PROFIBUS-PA cable screening Screw terminals, cable cross-section mm² (single core or strand) 8-pole DIP-switch 220 mm x 110 mm x 90 mm Address Pg on SW off HW 1PA- 2PA+ 3 (PA-) 4 (PA+) bus Hole for mounting screw M6 M12- connector M20x1.5 (6 12 mm) M16x1.5 (4 8 mm) M6 screw terminal Weight Material approx. 1.5 kg Housing: aluminium with blue paint finish Human Interface Operating elements 8-pole DIP-switch to set the PROFIBUS address: = 10 on off SW HW Switches 1-7: Switch 8: hardware address hardware addressing (OFF) or software addressing (ON) The default setting is software address 126. Value of switches 1-7: Switch No Position "OFF" Position "ON" Remote operation Device database file A software address can be set with the DPV1_DDE server in Commuwin II or a PROFIBUS-DP operating tool, see also BA 198F. Setting of the device parameters by PROFIBUS-DP Class 2 master, e.g. Commuwin II (Version 2.0 upwards) or PROFIBUS-DP operating tool using the acyclic services, see also slot/index table: Acquisition of signal status and validity by PROFIBUS-DP Class 1 master, e.g. PLC, using the cyclic services Device databases can be loaded from the Internet or ordered directly: Productavenue Downloadstreet Fieldcommunication Device ID No.:

6 Slot/Index- Table Parameter Device management Slot Index Index absolut Blockmatrix Read Write Type Size byte Storage class Directory_object_header 1 0 x OSTRING 12 C Composite_directory_entries 1 1 x OSTRING 12 C Composite_directory_entries 1 2 x OSTRING 20 C Composite_directory_entries 1 3 x OSTRING 12 C reserved Physical block Block object 0 16 x DS C Static revision 0 17 V9H5 x x UNSIGNED16 2 N Tag description 0 18 VAH0 x x OSTRING 32 S Strategy 0 19 VAH1 x x UNSIGNED16 2 S Alert key 0 20 VAH2 x x UNSIGNED8 1 S Target mode 0 21 V8H0 x x UNSIGNED8 1 S PB Mode block 0 22 V8H0 V8H3 Alarm summary 0 23 V9H0 V9H3 x DS-37 3 D x DS-42 8 D Software revision 0 24 x OSTRING 16 C Hardware revision 0 25 x OSTRING 16 C Device manufacturer ID 0 26 V2H2 x UNSIGNED16 2 C Device ID 0 27 V2H0 x OSTRING 16 C Serial number 0 28 V2H1 x OSTRING 16 N Diagnosis 0 29 x OSTRING 4 D Diagnosis extension 0 30 x OSTRING 6 D Diagnosis mask 0 31 x OSTRING 4 C Diagnosis mask extension 0 32 x OSTRING 6 C Device certification 0 33 x OSTRING 32 C Write locking 0 34 x x UNSIGNED16 2 N Factory reset 0 35 x UNSIGNED16 2 S Descriptor 0 36 x x OSTRING 32 S Device message 0 37 x x OSTRING 32 S Device installation date 0 38 x x OSTRING 16 S reserved 0 39 ID number selector 0 40 x x UNSIGNED8 1 S reserved 0 41 reserved View 1 (diagnosis) 0 54 x OSTRING N N: Non-volatile parameter; remains stored but is not included in the static revision mechanism S: Static parameter; after a write access the static revision counter STAT_REV is incremented D: Dynamic parameter; its value is calculated or is taken from another block C: Constant parameter; its value never changes 6

7 Slot/Index- Table Parameter Slot Index 1) Index absolute Blockmatrix Read Write Type Size byte Discrete input block Block object 1, 2, 3, 4 16 x DS C Static revision 1, 2, 3, 4 17 V9H5 x x UNSIGNED16 2 N Tag description 1, 2, 3, 4 18 VAH0 x x OSTRING 32 S Strategy 1, 2, 3, 4 19 VAH1 x x UNSIGNED16 2 S Alert key 1, 2, 3, 4 20 VAH2 x x UNSIGNED8 1 S Target mode 1, 2, 3, 4 21 V8H0 x x UNSIGNED8 1 S PB Mode block 1, 2, 3, 4 22 V8H0 V8H3 x DS-37 3 D Alarm summary 1, 2, 3, 4 23 V9H0 V9H3 Batch 1, 2, 3, 4 24 VAH4 VAH7 x DS-42 8 D x OSTRING 10 S reserved 1, 2, 3, 4 25 Discrete output value OUT_D 1, 2, 3, 4 26 V0H0 x OSTRING 2 D reserved 1, 2, 3, Channel 1, 2, 3, 4 30 V8H5 x x UNSIGNED16 2 S Invert 2) 1, 2, 3, 4 31 V1H0 x x UNSIGNED8 1 S reserved 1, 2, 3, Fail-safe mode 3) 1, 2, 3, 4 36 V2H0 x x UNSIGNED8 1 S Fail-safe value 1, 2, 3, 4 37 V2H1 x x UNSIGNED8 1 S reserved 1, 2, 3, Simulate 4) 1, 2, 3, 4 40 V7H0 x x OSTRING 3 S reserved 1, 2, 3, View 1 1, 2, 3, 4 51 x OSTRING Transducer block Block object 1, 2, 3, 4 60 x DS C Static revision 1, 2, 3, 4 61 V9H5 x x UNSIGNED16 2 N Tag description 1, 2, 3, 4 62 VAH0 x x OSTRING 32 S Strategy 1, 2, 3, 4 63 VAH1 x x UNSIGNED16 2 S Alert key 1, 2, 3, 4 64 VAH2 x x UNSIGNED8 1 S Target mode 1, 2, 3, 4 65 V8H0 x x UNSIGNED8 1 S PB Mode block 1, 2, 3, 4 66 V8H0 V8H3 x DS-37 3 D Alarm summary 1, 2, 3, 4 67 V9H0 V9H3 x DS-42 8 D Sensor wire check 5) 1, 2, 3, 4 68 V1H0 x x UNSIGNED8 1 S Sensor ID 1, 2, 3, 4 69 V2H0 x x UNSIGNED16 16 S Sensor serial number 1, 2, 3, 4 70 V2H1 x x UNSIGNED16 16 S Sensor manufacturer 1, 2, 3, 4 71 V2H2 x x UNSIGNED16 16 S Discrete primary value PV_D 1, 2, 3, 4 72 V0H0 V0H1 x x OSTRING 2 D reserved 1, 2, 3, View 1 1, 2, 3, 4 83 OSTRING ) Channel 1 = Slot index 1, Channel 2 = Slot index 2, Channel 3 = Slot index 3, Channel 4 = Slot index 4 In Commuwin II, the blocks can be selected from the live list. Storage class 2) 0 = not invert, 1 = invert 3) 0 = fail-safe value, 1 = last good value, 2 = wrong value 4) 0 = off, 1 = on 5) 0 = all on, 1 = lead breakage, 2 = short circuit, 3 = off N: Non-volatile parameter; bleibt gespeichert aber liegt nicht unter dem Static-Revision-Mechanismus S: Static parameter; nach einem Schreibeingriff wird die Static-Revision-Zähler STAT_REV inkrimentiert. D: Dynamic parameter; dessen Wert wird berechnet oder stammt von einem anderen Block C: Constant parameter; dessen Wert sich nie ändert. 7

8 Auxiliary Energy Supply voltage 9 V V DC, supplied by segment coupler, for applications in explosion hazardous areas, see certificate Certificates and Approvals PROFIBUS conformity FISCO Electrical area classification CE Mark Device tested by the PROFIBUS User Organisation PNO and assigned the ID number 1514 (certificate in preparation) Device constructed according to the FISCO model EC Type Approval Certificate PTB 99 AT 2185 II 2(1) G, EEx ia IIC T6 In attaching the CE mark, Endress+Hauser confirms that the device conforms to all relevant EU directives. Ordering Information FXA 164 with cable gland M20x1.5 Order No FXA 164 with cable entry Pg13.5 and M12 connector Order No Documentation PROFIBUS BA 198F/00/de Planning and Commissioning Guidelines Limit switch KA 143F Operating Instructions Liquiphant M FTL 50, FTL 51 KA 144F Operating Instructions Liquiphant M FTL 50 H, FTL 51 H TI 328F Technical Information Liquiphant M BA 124F Operating Instructions Commutec II XA 093F-A Safety Instructions for FXA 164 (to PTB 99 AT 2185) Endress+Hauser GmbH+Co. Instruments International P.O. Box 2222 D Weil am Rhein Germany Tel. (07621) Tx Fax (07621) info@ii.endress.com 08.99/MTM Endress +Hauser The Power of Know How TI 343F/00/en/ EHF/CV