LABOR ASTER INDUSTRIAL AUTOMATION. Intrinsically safe barrier with separation FIELDBUS TRANSMISSION LINES CONVERTER-SEPARATOR

Transcription

1 LOR STER INDUSTRIL UTOMTION Intrinsically safe barrier with separation FIELDUS TRNSMISSION LINES CONVERTER-SEPRTOR type SEx-RS RS/RS, RS/, /RS, /, RS/RS - group I, category M and group II and III, category accompanying device - Intrinsically safe input circuit of ia protection level TEX compliance - EC-Type Examination Certificate: KD 0TEX0 FETURE: II () G [Ex ia] IIC, II ()D [Ex ia] IIIC, I (M) [Ex ia] I, II G Ex n II T TEX ox Protection level IP0 Operating temperature range C - Intrinsically safe circuit can operate with transmission line led to explosion hazardous zone 0,,, 0,, of any explosive mixtures. - The second separated transmission side and supply circuit can work with non-intrinsically safe circuits of devices with voltage Um=V e.g. supplied from 0Vac network. - The separator as accompanying device should be installed in explosion safe zone or in explosion hazardous zone in suitable explosion-proof designed enclosure (see page ). tmosphere should be dry, dust free and protected against access of people not trained in maintenance and operation of the separator. - The separator can be installed in explosion hazardous zone in,,, in flameproof enclosure Ex d or encapsulated Ex m. In zone basing on marking Ex n II T (category device) it can be installed in other enclosure in accordance with rules in force (e.g. Ex e between others) see page. Separation and translation of the following transmissions: Safe zone Explosion hazardous zone RS RS RS RS RS The separator is designed between others for MODUS RTU/SCII, PROFIUS DP and operates correctly with any half-duplex protocol. audrate 0 00 bd. Smart control of flow direction. ll circuits fully galvanically separated. Internal lines terminators. Led indication of supply, transmission and line damage. PURPOSE : The separator is designed to galvanically separate and translate transmission standards RS, RS, in safe zone to standards RS or in intrinsically safe circuit leading to hazardous zone. For RS and transmission the separator allows to extend the transmission line up to 00 meters (up to 00 meters for baudrate 00) and many devices to operate with each other. Separation eliminates interferences and the differences of potentials. It also protects connected devices from power surges. The change in transmission type ( to RS or vice versa) is done through appropriate connection of transmission wires to the terminals and possible connection of the terminator. Changing the input type to RS requires opening of the housing and switching the jumpers. Switching description is given later in this document. audrate RS/ connection line length 00 - < 00 m 00 - <000m < 00 - <00m SIC TECHNICL PRMETERS: Non-intrinsically safe side RS according to RSC standard Receiver parameters: - low level - - V - V - high level - + V + V Connection line length - max m (00) (capacity sum C 00pF), max m (00 C<00pF) Transmitter parameters: - output voltage - minimum V on load R k RS and - receiver sensitivity - 0. V - signal from transmitter - min V on load R 00 Connection line length - max 00m audrate - 0 to 00 bd Minimal interval between - length of character switching Direction of line switching - <0 ns time Distortion of the bit - <00 ns Phase shift of the bit - <00 ns Number of devices in the line - max Supply indication - PWR LED on (blinking indicates a constant state of 0 on one of lines) Transmission indication - RS LED on Supply Vdc/0m Rail housing IP0 - on TS rail Galvanic separation - circuits of both sides of transmission and supply circuit mutually separated - isolation test voltage - kv 0Hz Rail housing IP0 - with rail. x x.mm EMC requirements - PN-EN 000--, PN-EN Safety requirements - PN-EN 00-:00 The device during production is tested for speed 00k. t speeds higher than 00 gate switching time may increase to bytes.

2 HRDOUS ONE + - V 0 T- RS() Pwr RS SEx-RS hazardous zone 0,,, 0,, RS() T- RS RS 0 T- J SFE ONE Vdc + - T- T- RS T- View of the front side of the SEx-RS separator lock diagram of the SEx-RS separator Housing dimensions: thickness. mm; width mm, height. mm. NOTE: Terminal GND in intrinsically safe circuit allows connecting shield of the transmission cable which goes to explosion hazardous zone. raid of the shielded cable cannot be grounded from both sides (in safe zone and hazardous zone). raid does not have to but can be connected to the ground but only from one side. If GND terminal together with cable shield is grounded in safe zone then braid of the cable in explosion hazardous zone must be distanced minimum cm from terminals of the core of this cable. View of the jumpers comb to switch. Description of the jumpers configuration is in the table on page. THE SFET PRMETERS: directive TEX - PN-EN 00-0:0, PN-EN 00-:0 a) Intrinsically safe circuit: terminals T-,,, T-,,, GND with ia protection level: Distributed values of Co, Lo, L/R of the connection cable should be adopted according to the table shown below. L/R [mh/ ] Lo [mh] Co [ F] Uo [V] Io [m] Po [mw] Version I and II and I and II and I and II and IIC IIC II III II III II III IIC SEx-RS-, 0, 0,0 0, SEx-RS-, 0, 0,0 0, SEx-RS-, 0, 0, 0, SEx-RS-,0 0,0 0,,, SEx-RS- 0,0 0, 0,, 0, Characteristic of the circuits is linear. For clustered values should be taken half of the values of Co, Lo given in this table remembering that Co cannot exceed µf for group I, II, II and 0,µF for IIC. b) Intrinsically safe circuit parameters: terminals T-,,, T-,,, GND with ia protection level: Li 0, Ci 0. Version Ui [V] Ii [m] SEx-RS- SEx-RS- 0 SEx-RS- 0 0 SEx-RS- 0 SEx-RS- 0 Pi [mw] does not require determination c) Non-intrinsically safe circuits parameters: terminals,, T-,, and supply V : terminals S+, S- : Safety parameters for group III (dusts) are the same as for group II (gas). Um=V

3 In installations in which parameters Ci and Li of device cooperating with intrinsically safe circuit (connection cable excluded) exceeds % of the value of parameters Co and Lo given in the table above you should: - from 0% of the value of Co, Lo subtract Ci, Li of cooperating device, - these values remains for parameters of connection cable, - if cable parameters are unknown you can take 00pF/m, 0,µH/m for calculation. Conditions of use: Typical application for the separator is to be installed in safe zone. The separator can be installed in explosion hazardous zone in flameproof enclosure (or other in accordance with the rules in force). pplication in first (I) explosive group does not require putting warning on the enclosure. fter turning off the supply it can be taken out of the enclosure without delay. In case of using it in II and III explosive group, on outer part of the enclosure must be warning: "Do not open the enclosure within 0 minutes after turning off the power". For installation in zone : The separator can be installed in explosion-proof design enclosure e.g. with protection level Ex n or Ex e, Ex c, ensuring at least IP. The enclosure should have cable inputs and blanking elements meeting the same requirements of protection level Ex n or Ex e, Ex c. To prevent self-loosing of cables in non-intrinsically safe screw terminals number, 0,,,,,, should be used not-tinned cables: - single wire or braid wire with twisted ending with diameter of 0.. mm², - braid wires with the same diameter of 0.. mm² with twisted ending put together to common tubular sleeve kniked with special tool. Terminals should be tighten with a torque of 0. Nm with a flathead screwdriver having a width of.0... mm. Every months terminals should be checked and tighten with a torque of 0. Nm with a flathead screwdriver having a width of.0... mm. Note: When there is or may be explosion atmosphere, it is not allowed to connect voltage cables to non-intrinsically safe terminals number, 0,,,,,,. When the device is powered, it is not allowed to connect or disconnect cables in non-intrinsically safe circuits. When there is or may be explosion atmosphere during service operations power supply should be disconnected in safe zone. efore starting service operations non-explosion atmosphere should be ensured when the separation is installed in zone. FUNCTIONL DESTRIPTION The device continuously monitors the transmission speed and adjusts its operation to the actual speed. It uses the innovate algorithm testing transmission speed developed by LOR-STER company in result there is no need for constant speed or direction of the transmission. characteristic feature of this algorithm is lack of any information loss at the start of the transmission with any speed. It is suited specifically to Modbus SCII/RTU protocol, but works correctly in each half-duplex protocol (e.g. PROFIUS DP). Only requirement is the continuity of transmission and minimal pauses between changing the direction of the transmission. ny errors are indicated via LEDs. PWR LED is continuously lit after turning on power supply or blinks when it detects low state lasting longer than about 0, sec. (which proves mostly of incorrect polarity of the transmission line to change it please disconnect the line, wait for LED is not blinking anymore and then connect again correctly). RS LED is lit during transmission on one of the two lines.

4 Configuration of the device. The separator is equipped with optional attached internal 00Ω terminators matching the wave resistance of the line. fter opening the housing can be set: Description of the jumpers configuration. Shorting enables transmission direction control on the side of the intrinsically safe circuit (ex hazardous zone side). Opening disables transmission control. Transmitter is permanently switched on. Shorting echo block Opening echo block circuit is switched off Shorting enables transmission direction control on the side of the safe zone. Opening disables transmission control. Transmitter is permanently switched on. Opening when RS Shorting input standard from safe zone is RS. Opening input standard RS/. Shorting direction switching delay by additional byte. Recommended for discontinuous transmission. Opening usual direction switching delay (after one byte of silence). Description of the jumpers configuration. - Shorting connects the internal terminator to / line. Opening disconnects the terminator of / line Configuration jumpers storage. Safe side Device connecting description External connecting description RS RS SW - short. SW - open. SW - short SW - open SW - short SW - open SW - short (open option) SW - (short option for terminator) D Female (example) TxD D- RxD D- GND D- short with signal of RS line short with signal of RS line (optionally T- connected to internal terminator) signal, signal (optionally T- connected to internal terminator) signal, signal Hazardous side RS RS Device connecting description SW - short SW - short (open option) External connecting description short with signal of RS line short with signal of RS line (optionally T- connected to internal terminator) signal, signal (optionally T- connected to internal terminator) signal, signal (optionally T- connected to internal terminator)

5 Example of use of terminators Connecting without noise filter Connecting with noise filter. Only on the safe zone. Use in case of interference generators nearby e.g. high power electric engines, turbine, induction furnace. It can be ordered from LOR-STER after consultancy. C RT RT RT RT RT RT C C * * audrate* R T audrate transmission speed in bods. ORDERING CODE: Converter-separator type SEx-RS---X where =(,,,, ) according to the table from page (column Version ). Safe zone - EX zone - X RS without echo - RS echo - RS C C half-duplex D D half-duplex with terminator E - full-duplex F F Production and distribution: LOR STER Poland, 0 Warsaw, ul. Czechowicka tel ; + 0 ; fax E- mail: biuro@labor-automatyka.pl http: The manufacturer reserves the right to make changes to the product Edit. 0 / 0 In this version (FF) the device does not control transmission direction. The same is in F configuration.

6 SEx-RS---C SEx-RS- --C Detailed description of connection and configuration of each version. elow description concerns ordered version and its connection. User can change his device version basing on below drawings (after demounting it and opening the housing). Most popular versions are marked on green. During inactive state of transmission lines have positive voltage in relation to their equivalent while voltmeter is between transmission terminals (couples:,,, ). Connection between SEx-RS and master computer in version with RS- interface for two types of connectors. SEx-RS GND RxD TxD SEx-RS RxDTxD GND Dotted line is for optional connections. D-F D-M Code Description Jumpers description Hazardous zone Connection drawing Safe zone RS RxD RS RS RS Transmission with echo suppression. Half-duplex transmission. - shorted - shorted - shorted T- T- TxD + Vdc - RS RxD RS RS RS Transmission with echo. Half-duplex transmission. Wrong echo indicates a conflict in the RS- line. - shorted - shorted T- T- TxD + Vdc - Jumper - should be used in case of discontinuous transmission. This jumper does not affect function of the device described in the table. In this case parameter concerns intrinsically safe version =(,,,, ) and was described in the table on page ( Version column). This jumper does not affect function of the device described in the table.

7 SEx-RS---F SEx-RS---D SEx-RS---D Code Description Jumpers description Hazardous zone Connection drawing Safe zone RxD RS RS receiving, transmitting. Transmission with echo suppression. transmission half-duplex with releasing lines. always receive and is correlated with TxD, and transmits and is correlated with RxD. - shorted - shorted - shorted T- T- TxD + Vdc - RxD RS RS receiving, transmitting. Transmission with lines control. transmission halfduplex with releasing lines. Echo occurrence indicates wrong configuration of line (shorted) or conflict. - shorted - shorted T- T- TxD + Vdc - RxD RS RS, receiving, transmitting. Transmission with echo suppression. transmission full-duplex without direction control. Device is transparent for transmission. always receive and is correlated with TxD, and transmits and is correlated with RxD. - shorted - shorted T- T- TxD + Vdc -

8 SEx-RS--C-D SEx-RS--C-C SEx-RS---F Code Description Jumpers description Hazardous zone Connection drawing Safe zone RS, receiving, transmitting. Transmitting with echo. Echo occurrence indicates shortage error of lines -, -. transmission full-duplex without direction control. Device is transparent for transmission. always receive and is correlated with TxD, and transmits and is correlated with RxD - shorted T- T- RxD TxD RS + Vdc - RS RS RS RS Transmission half-duplex with all direction control. - shorted - shorted T- T- T- 0 + Vdc - RS RS receiving, transmitting. transmission half-duplex with releasing lines. - shorted - shorted T- T- T- 0 + Vdc -

9 SEx-RS--E-C SEx-RS--D-C SEx-RS--C-F Code Description Jumpers description Hazardous zone Connection drawing Safe zone RS RS, receiving, transmitting. transmission half-duplex without direction control. always receive and always transmit. - shorted T- T- T- 0 + Vdc - RS RS, receiving, transmitting. Transmission half-duplex with all transmission direction control. No terminators from safe side. - shorted - shorted T- T- T- 0 + Vdc - RS RS, receiving, transmitting. Transmission half-duplex with all transmission direction control. Terminators from safe zone. - shorted - shorted - shorted T- T- T- 0 + Vdc -

10 SEx-RS--D-F SEx-RS--D-D SEx-RS--F-C Code Description Jumpers description Hazardous zone Connection drawing Safe zone RS RS receiving, transmitting. Transmission half-duplex with only and control from intrinsically safe side. Lines are turning off if no transmission. Lines and transmitting all the time. Terminators from safe zone. - shorted - shorted T- T- T- 0 + Vdc - receiving, transmitting. Transmission half-duplex with all transmission direction control.. Lines are turning off if no transmission. No terminators from safe side. - shorted - shorted T- T- T- 0 + Vdc - receiving, transmitting. Transmission half-duplex with only and control from safe side. Lines are turning off if no transmission. Lines and transmitting all the time. No terminators from safe side. - shorted T- T- T- 0 + Vdc -

11 SEx-RS--F-D SEx-RS--E-F SEx-RS--E-D Code Description Jumpers description Hazardous zone Connection drawing Safe zone receiving, transmitting. Transmission half-duplex with all transmission direction control. Lines are turning off in no transmission. Terminators from safe side. - shorted - shorted - shorted T- T- T- 0 + Vdc - receiving, transmitting. Transmission half-duplex with only and control from safe side. Lines are turning off if no transmission. Lines and transmitting all the time. Terminators from safe side. - shorted - shorted T- T- T- 0 + Vdc - receiving, transmitting. Transmission full duplex with only and control from intrinsically safe side. Lines are turning off if no transmission. Lines and transmitting all the time. Terminators from safe side. - shorted - shorted T- T- T- 0 + Vdc -

12 SEx-RS--F-F Code Description Jumpers description Hazardous zone Connection drawing Safe zone receiving, transmitting. Transmission full duplex without direction control. Lines transmitting all the time. Terminators from safe side. are correlated with lines, and with lines and. - shorted T- T- T- 0 + Vdc - Production and distribution: LOR STER Poland, 0 Warsaw, ul. Czechowicka tel ; + 0 ; fax E- mail: biuro@labor-automatyka.pl http: The manufacturer reserves the right to make changes to the product Edit. 0 / 0