Field Communication FXA 675 Rackbus RS-485 Interface monorack II RS-485

Transcription

1 Technical Information TI 221F/00/en Field Commnication RS-485 Interface monorack II RS-485 For distribted control of Commtec transmitters and field transmitters with RS-485 interface 19" Racksyst plg-in card standard version with two RS-485 ports comprises an interface card in a Monorack II hosing with a blind front panel Application The interface is a 4 HP, 19" Racksyst plg-in card. It converts signals to RS-485 signals and vice versa. Two versions are available: Standard version with two RS-485 ports Single port version in Monorack hosing The ports are electrically isolated from the rest of the circitry and each other. Two LEDs on the front panel light when data is being transferred over the corresponding bs. Featres and Benefits Enables central display and control of level, pressre, flow, blk flow, temperatre and analysis measrements Provides reliable commnication over distances p to 1200 m (3900 ft) Connects p to 25 field transmitters with RS-485 interface per channel to a master rack containing a gateway p to 10 transmitters in hazardos areas (EEx e/eex d) Connects a master rack to a secondary rack Connects a bs segment to a master rack Endress +Haser Nothing beats know-how

2 FMU 671 FMB 672 FMU 671 FMB 672 FMB 672 FMC 672Z FMX 770 ZA 673 ZA 673 Measring System personal compter with operation and display software programmable logic controller spervisory system (Profibs or FIP) interface field transmitters with RS-485 interface port 1 gateway ZA 673 (Profibs) ZA 674 (FIP) ZA 672 (Modbs/PC) max.1200 port 2 Connection to a spervisory system via the interface and a ZA gateway the field transmitters are eqipped with a RS-485 interface long daisy chains to be avoided brings delays personal compter with operating and display software, e.g. Commwin, Commgraph, Commtool? max.1200 m RS-232C e.g. gateway ZA 672 secondary rack master rack RS-485 max.1200 m Connection of two sbracks to a master rack via the interface the distance from the master rack can be p to 1200 m Monoracks 2

3 Measring System personal compter with operating and display software secondary rack RS-232C FMU 671 FMB 672 max.1200 m FMC 672Z FMX 770 ZA 673 gateway ZA 672 single port Monorack II RS 485 Star topology: Several FXA interfaces in the master rack provide optimm segmentation of the bs. The maximm line length of each segment is 1200 m Monoracks RS-485 max.1200 m field transmitter with RS-485 interface System Components The serves primarily as a link between individal or grops of transmitters and a master rack. Depending pon the topology, the measring system may comprise: One or more interfaces in the master rack Up to 25 field transmitters (10 in hazardos areas) with RS-485 interface per port, e.g. Prosonic, Micropilot, Promag, Promass interface in the secondary rack with Commtec transmitters, e.g. Nivotester FMU, Commtec PMX, Promag II (single port ) with Commtec transmitters in Monorack field hosing ZA gateway in the master rack for connection to a personal compter, programmable logic controller or spervisory system If reqired, operation and display software, e.g. Commwin, Commgraph and Commtool. Up to 64 field and Commtec transmitters can be connected to a ZA gateway. Daisy Chains Althogh daisy chains serial linking of several secondary racks to one port are feasible, there is a delay of approximately 60 µs at each interface. The cmlative delay at the interfaces may case time-ot malfnctions at the ZA gateway. Segmentation For extensive bses with many stations it is recommended that the bs be split into segments. This enables any falty instrment to be located qickly. Direct Connection to Personal Compters Field transmitters with RS-485 interface can also be connected directly to a personal compter withot the se of the interface and ZA gateway by sing a RS-485 interface card (Part No ) or RS-485/RS-232C converter (230 V: Part No V: Part No ) 3

4 Configration Installation Each of the two channels can be regarded as a separate bs which may be p to 1200 m in length. Two DIP-switches, SW 1 for channel 1 and SW 2 for channel 2, set the bs power and terminal resistance. The interface in the master rack has bs power and terminal resistance switched on (ON, ON, ON, ON) An interface in a secondary rack has bs power switched off and terminal resistance switched on (OFF, ON, ON, OFF) The switch for an nsed channel is set to ON, ON, ON, ON Switch SW 3 mst be switched on if less than 32 Commtec transmitters are connected to the secondary. Configration The is sally sed in secondary racks. The bs power mst be switched off and terminal resistance switched on (SW 1 = OFF, ON, ON, OFF) SW 3 closed for < 32 Commtecs open for > 32 Commtecs. power and termination switches 392Ω 150Ω 392Ω OFF ON termination SW3 SW1 SW2 Monting Racksyst plg-in cards mst be installed otside hazardos areas in a rack or protective hosing, e.g.: 19" rack (84 HP wide) for monting in the control room Half 19", 42 HP wide, field hosing with protection IP V mini-fse, 100 ma, slow-blow Side view of two-port card showing position of configration elements Monting The Monorack mst be installed in a safe area and the site chosen mst provide an operating temperatre of -20 C +60 C for one Monorack -20 C +50 C for row monting Drilling plans for single monting are inclded in the technical data. Shold the Monorack be monted at an exposed site, then it is recommended that it is installed in a protective hosing, degree of protection IP 55. Details can be fond in TI 099F/00/en. Field hosing power flap terminals for and RS-485 blind panel base Assembling the nit screws hosing with card 4

5 Electrical Connection Connection diagram for standard card d b z L+ L- d10 d10 d10 b10 b10 b10 d12 z12 d14 z A1 B1 d32 L+ z32 L- RS V A1 B1 + A2 A2 B2 B2 RS d2 d4 A1 B1 A2 B2 ZA 67x RS RS A1 B1 A2 B2 Bs Wiring For the bs lines se screened, twisted pairs with typical kilometre vales L = 270 µh, Cll = 88 nf, R = 43 Ω, Cls = 90 nf. The maximm line length per port is 1200 m (3900 ft) The bs screen mst exhibit electrical continity throgh the bs We recommend that the screen is gronded at every bs station observe earth bonding reqirements. Interface Terminals d10 and b10 are for the Terminals d12 Data A, z12 Data B and d14 Data A, z14 Data B are for the RS-485 ports 1 and 2 respectively The bs screen mst be gronded to the rack chassis which itself mst be gronded The bs and power terminals are located in the base of the Monorack hosing: Rote the leads from the other Commtecs in the Monorack assembly to the terminals d10 and b10. Rote the RS-485 leads from the card in the master rack as follows: d12: Data A; z12: Data B Grond bs screen Where several Monorack nits are monted compactly in grops, the hosing power spplies can be interconnected by sing the contacts spplied. PE N/L- - L1/L+ + Power d10 + d10 d10 + d2 b10 - b10 b10 - d4 ZA 67x z12 d12 z12 + A A + - B B - RS-485 A B RS-485 A B Connection diagram for 5

6 Technical Data Interface HP 7.45 Electrical Connection Power spply: 24 V DC (20 V 30 V); - residal ripple 2 Vpp, within tolerance Spply crrent: max. 70 ma HU Power consmption: max. 2 W at 24 V, max. 2 W at 30 V Fse: 100 ma slow-blow Dimensions interface card 1" = 25.4 mm Protection against reverse polarity and overloading. Constrction Design: 19", 4 HP, Racksyst II* plg-in card to DIN (Eropa card) Front panel: black synthetic with ble field inlay, grip and markings Ingress protection (DIN ): Front panel IP 20 Card IP 00 Dimensions: see diagram Weight: approx kg Mltipoint plg: conforming to DIN , Part 3, Type F (25-pole) - Rack installation kit 25/2. Environment Operating temperatre: 0 C C Storage temperatre: -25 C C Climatic class to DN : KSE German Lloyd vibration test: f = 2.0 Hz to 13.2 Hz; a = ± 1 mm f = 13.2 Hz to 100 Hz; 0.7 g Electromagnetic compatibility to EN Emission, EN Immnity and NAMUR draft recommendations to 10 V/m Signal Inpts and Otpts Electrically isolated from the rest of the circitry. interface RS-485 interface with 2 ports Transmission Rate: 19.2 kbits/s Protocol: Conversion delay: ca. 60 µs per interface Terminal resistance and bs power: selectable with 4 gang DIP switch. Stats Information LED ON lit: ready for operation LED 1 lit: commnication on port 1 LED 2 lit: commnication on port 2. *Racksyst II cards cannot be installed in Monorack I hosings ON lights when ready for operation light when data are transmitted 1 2 RB/485 Front panel of interface card the version has no display elements 6

7 Technical Data M4 Dimensions and drill holes for individal monting of Monorack II RS-485 1" = 25.4 mm HP 30 Constrction Monting: hosing for wall-monting Hosing: ABS, grey Base: ABS, black Card: bilt into hosing, with blind panel - Weight: approx kg Protection type to DIN : IP 40 monted on flat wall Ambient temperatre: - monted singly or with 1 cm gap, nominal range: 0 C +60 C extreme range: -20 C +60 C - row monted: max. +50 C Hmidity: Class KSE to DIN Weight: with power pack and FXA card, ca kg Electrical connection: Power spply: 3 terminals Inpt and otpt signals: 4 pole terminal block Terminal size: p to 4 mm 2 wire p to 2.5 mm 2 (fine strand) p to 2 x 1.5 mm 2 (fine strand) Cross connectors: for power connection only, rating: grond max. 5 A, line max. 4 A per connection Power Pack 115/230 V AC ±15 %, 50/60 Hz or 100/200 V AC ±15 %, 50/60 Hz or 24/48 V AC ±15 %, 50/60 Hz or V DC (If the permissible voltage range is exceeded, safe isolation can be garanteed only with the se of a sitable external fse) or 24 V DC external spply (withot power pack) Secondary side: electrically isolated from the primary side Otpt voltage: ca. 21 V Otpt crrent: max. 165 ma Otpt power: max. 3.5 W Overload/short-circit protection Accessories (inclded): 3 coding strips 5 cross connectors 1 ble cable gland Certificates PTB No. Ex-84.B.2085 U ENDRESS + HAUSER V 15% 115V 15% Voltage range selection for AC power packs 7

8 Prodct Strctre Interface Certificates, Approvals R Standard Y Other RS-485 Ports 2 Dal port 9 Special version Power Spply E V DC Y Other voltage prodct designation Certificates, Approvals R Standard Y Other Power Pack A 115/230 V AC ±15 %, 50/60 Hz D 24/48 V AC ±15 %, 50/60 Hz E 24 V DC external spply (withot power pack) L 100/200 V AC ±15 %, 50/60 Hz K V DC Y Special voltage MONO 485 prodct designation Spplementary Docmentation System Information SI 014F/00/e RS-485 Operating Instrctions BA 134F/00/e ZA 672 Modbs Gateway Technical Information TI 148/00/en ZA 673 Profibs Gateway Technical Information TI 162F/00/en ZA 674 FIP Gateway Technical Information TI 167F/00/en Monorack II Technical Information TI 183F/00/en Endress+Haser GmbH+Co. Instrments International P.O. Box 2222 D Weil am Rhein Germany Tel. ( ) Tx Fax ( ) /MTM Endress +Haser Nothing beats know-how TI 221F/00/en/06.96 GW/CV 4.2