User Manual Appendix - Interconnection
Contents
1. Exit Status Normal operation Disconnect Figure 13 Software Slave configuration in GeoDAS 2 3 Verification of the Installation If the network is synchronised Common Time and Common Trigger are working the network status of every recorder in the network shows the word Synchronised see above Figures 12 and 13 where the opposite is indicated in GeoDAS The synchronisation of the date and time of all Software Slaves to the Software Master should be verified and also the network triggering options A simple way to check the wiring during the installation is to verify the arrival of the network signals to an instrument For this test the recorders need to be configured correctly The following LED s can be found on the interconnection cards GS ICC V5 inside the recorder by removing the black plastic cover K Caution High Voltage If you remove the black plastic covering the base part of the recorder housing do not touch any electronics inside e LED90 yellow Blinks in all recorders LED91 red Blinks in the recorders configured as Network Drivers and in the Central Communication Box e LED92 green Blinks in the recorder configured as Software Master and during a trigger also in the corresponding Software Slave The communication option can be tested by simply trying to establish a connection to the instruments from a Computer running GeoDAS The standard communication speed for Interconnection Networks is 382. GeoSIG Be GSR 12 16 18 24 AS 12 16 GCR 12 16 User Manual Appendix G Interconnected Recording Networks GeoSIG Ltd Ahornweg 5A 5504 Othmarsingen Switzerland Phone 41 44 810 2150 Fax 41 44 810 2350 info geosig com www geosig com GeoSIG GS_GSR_GCR_UserManual_App_G_Interconnection_V01 doc 08 12 2010 li Appendix G Document Revision Patrick Camina Checked Ricardo Araujo Approved Christoph K ndig Version 04 10 2006 First issue Re structured document replacing TN 93 SMI InterconnNet doc and pointing out practical aspects such as installation 09 10 2006 Adjustment regarding standard telephone cable in Chapter Interconnection Cable PC 07 11 2006 First level approval with some formatting and relocation TB 15 11 2006 AC connection pin description Central Communication Box added PC 08 10 2007 Housing sizes inserted under pictures TB Disclaimer GeoSIG Ltd reserves the right to change the information contained in this document without notice While the information contained herein is assumed to be accurate GeoSIG Ltd assumes no responsibility for any errors or omissions Copyright Notice No part of this document may be reproduced without the prior written consent of GeoSIG Ltd The software described in this document is furnished under a license and may only be used or copied in accordance with the terms of such a license Trademark All brand and product names mentioned are tradema
3. Introduction When interconnection is involved more options are available in terms of connections data flow accessibility and cost One version is the Interconnected Recording Network which uses local recording The three possible types of the Interconnected Recording Network are explained in detail in TN 85 Strong Motion Instrumentation Networks This document describes practical aspects concerning installation and their use 1 Description and Functionality The three types of the Interconnected Recording Network Interconnection Network are illustrated in Figure 1 and are described below A brief functional comparison is also presented in Table 1 1 1 Common Functionality Connections Several recorders with internal or external sensors are placed on site and are interconnected with one cable while galvanically isolated from each other For convenient cabling external junction boxes are used The interconnection between the stations can be carried out in ring star or net topology Distances between the stations can be as much as 1 km This is a favourable and cost effective solution for many applications Common Timing One of the interconnected recorders commonly referred to as the Software Master is enabled to synchronise and update the internal clock of each of the other recorders commonly referred to as Software Slaves via the network to achieve Common Timing All stations within the network use this common time inform
4. 400 Baud If communication problems arise during installation the following LED s found also on GS ICC V5 can be of help e LED6O0 yellow Communication transmit signal e LED61 green Communication receive signal Both LED s should blink during successful communication
5. 7 of the orange connectors In the case of short in door networks up to 200 m a standard telephone cable without shield is sufficient CCC and CCM require a cable with a minimum of 3 twisted pairs If 4 pairs are used two of them can be used in parallel for N_SYNC and N_GND In any case one pair is used for 485_TX_H 485_TX_L pin 1 and 2 and one for 485 RX H 485 RX L pin 3 and 4 2 2 Interconnected Recorders In an Interconnection Network not all recorders are configured in the same way from the hardware and from the software point of view Figures 9 10 and 11 show the setup and position of the individual recorders in the corresponding bus network The text in the Figures below each recorder describes its configuration and role in the network The recorders themselves are identified with labels containing the same text The following Chapters describe this issue for the different types of networks The individual recorders are pre configured hardware and software in the factory tS Do not change the interconnection network specific configuration as described below unless there is a strong reason to do so check with GeoSIG Ltd TE The maximum number of recorders in an Interconnected Recorder Network is limited to 10 2 2 1 CCL The following different configurations are possible see Figure 9 e The first recorder in the bus is configured as Network Driver and has therefore jumpers J91 and J92 inserted on the
6. Jolseyy UONDSUUOO4a1UI UNE OAI UOHOSBUUOIIB U YX BAEIS UO OSUUODJE U HXO 7199 UON2EUUO2481UI OO UOIJeUUOOIaJUI 7199 UOND8UUO481UI LVSOADOI SO reuondo SdD 199 uonesiunuwo jeso eut UOWLUOZ SWL UOWWOYI UONRJEUUO91a1UI UOITEANBYUOD SARIS BIEMYOS payasu Jou z6r PUB Let JOAUP YOWU ON OARS UO OSUUODIE U YX 7199 uondauuod a u IN GD SO Figure 9 Interconnection Network setup CCL Oo GO Oo x N SD ed a 2 Q JUALUNSU S114 1UGUINNSUI EI SE Peuesul 10u zef pue Let peyasu Jou zef pue 6f peyssu jou z6r pue 6f Dees Jou z6r pue Lef o JOAUP YOMISU ON JOAUP YJOMJSU ON JONUP YJOMJOU ON JOAUP YJOMJOU ON O UOITEANBHUOS Jos BJEMYOS UONEANBHUOS SAEIS BEMYOS UONeINBHUOD SAEIS BIEMYOS UONeANBHUOS SARIS SIEMUOS O UOINEuIULUS INDUJIM Jase HO UONEUILA OU UNE UoNeuIuus WOU UNE voreumugL YM HO E 999 UONVSUUODASMUI 999 UONIJUUOJIAJU 999 UOIDEUUODIEIUI 299 UONDEUUODJSIUI gt 2 O Z e Q O gt ba E 8 lt reuondo l SdD oO 5 oO _ D o gt o UONEUILS UODSUUO9Je1UI O JOAUP MOMS 5 xog UONEIIUNWWOI EIUe OE Wa S Wa G FI 092 UORESIUNWILIOD jenug Hu UOUIUOD eut UOUIUOD UONJ8UUO2I81UI Ee Loi 9 CO U Figure 10 Interconnection Network setup CCC GeoS IGy pp_G_Interconnection_V01 doc 08 12 2010 Appendix G GS_GSR_GCR_UserManual_A 17 reuondo SEI 1US
7. is important for the functionality of the network For all network types the cable has to have twisted pairs and a shield in order to prevent it from picking up interference Another important aspect is the diameter required which is a trade off between total length of the bus network and cable diameter Since the signal which takes care of Common Time and Common Trigger is a current signal 30 mA it is the limiting factor Therefore the maximum total cable resistance both ways is 2 50 Ohm Table 3 shows the relationship between cable cross sections and maximum network lengths Table 4 Cable cross sections vs maximum network length Cross section Resistance Maximum network length mm Ohm km m 0 20 89 0 500 0 25 71 2 700 0 35 50 9 900 0 5 36 6 1300 A way to reduce the cable resistance is to connect two pairs in parallel This effectively halves the resistance and doubles the maximum length For network types which involve communication CCC CCM the total network length is advised to be a maximum of 1000 m However lengths above 1000 m are possible but the maximum communication speed for reliable connections is decreasing with increasing distance Please contact GeoSIG Ltd in such a case Another option for long distance interconnection networks is a transmission based on fibre optics For a network of type CCL only one twisted pair is required which is connected to N_SYNC pin 6 and N_GND pin
8. to Central Communication Box GXR Slave without Termination all except first and last GXR Slave with Termination last instrument D I OVP boxes and Common Time Common Trigger wiring is not shown in Figure 10 2 2 3 CCM The following configurations are possible see Figure 11 The first recorder in the bus is configured as Network Driver and has therefore jumpers J91 and J92 inserted on the internal interconnection card GS_ICC_V05 There can only be one Network Driver The first recorder in the bus is configured as Software Master whereas all the other recorders are configured as Software Slaves Refer to Chapter Software Configuration below If a GPS is available it is connected to the Software Master first instrument Communication through the network requires terminations in the first and in the last recorder To summarise there are three types of instrument configurations GXR Master with Termination first GXR Slave without Termination all except first and last GXR Slave with Termination last instrument TE OVP boxes and Common Time Common Trigger wiring is not shown in Figure 11 GeoS IG pp G Interconnection MO doc 08 12 2010 Appendix G GS GSR GCR UserManual A 15 uoljesnByuoo Ja sew alemljog UONBINBIJUO9 SARIS SIEMYUOS UOITEANBYUOD SAEIS BEMYOS payasul zef pue 6f p p su jou Z6r pue 6f payasu Jou z6r pue ef JOAUP YIOMION JOAUD YIOMIOU ON JOAUP YIOMJOU ON
9. DAS Software Manual x Instrument Setup Manager for the station lt GNCO1 gt Sampling Event Trigger Alarms Channels Communication Time Triggers Station Instrument Power and Batteries Date and Time Test LCD Display Errors and Warnings Interconnection Data Streams Printer Batch Mode Intensity Es Interconnection of Instruments Ti Put Page Instrument Network Options Put All IV Network Master Mode IV Input Network Trigger IV Output Network Trigger IV Synchronise Slave Clock to Network Clock Reset Current network status Synchronised Import Export Exit ASA Status New event recorded Disconnect Figure 12 Software Master configuration in GeoDAS GS GSR GCR UserManual App OG Interconnection VO1 doc 08 12 2010 GeoSIG yy Appendix G 19 Instrument Setup Manager for the station lt GNCO1 gt x Sampling Event Trigger Alarms Channels Communication Time Triggers Station Instrument Power and Batteries Date and Time Test LCD Display Errors and Warnings Interconnection Data Streams Printer Batch Mode Intensity h Es Interconnection of Instruments L Refresh IV Enable Network Synchronisation Put Page r Instrument Network Options Put All Network Master Mode IV Input Network Trigger IV Output Network Trigger IV Synchronise Slave Clock to Network Clock Reset Current network status No Synchronisation Import Export
10. UINAISUI SI papasu zer pue er JONUP YIOMION uoneiNBHUOD Ja SEW BIEMYOS UO US Uu Joie YXO W39 UON26UUO2481UI 1UBWINNSUI SET peyasu jou Z6r pue Ler p u su Jou zef pue L6r payesul Jou Z6r pue er JEAUD YJOMJOU ON JOAUP YONU ON JOAUP YJOMJOU ON UOIFeINB JUOD BAEIS BIEMYOS uoNeiNBYUOS BAEIS BIEMYOS UOIFEINHYUOD BAEIS BIEMYOS UOneuIwJe Toun YX UONEuIUUSI WOU YX voeumue YIM UNE W39 UOIEeuuOOUe W39 UON2EUUO2481UI W39 UON26UUO2481UI NOOD uonesiunwwon apounN 43561 UOUIWOD eu UOUIUOD UOIDEUUO9ISJUI Figure 11 Interconnection Network setup CCM GeoSIG GS_GSR_GCR_UserManual_App_G_Interconnection_V01 doc 08 12 2010 18 Appendix G 2 2 4 Software Configuration In order to allow Common Time and Common Trigger in the network the recorders need to be configured to this respect Figure 12 shows the configuration of the Software Master The following ticks are fixed and cannot be changed Software Master e Enable Network Synchronisation e Network Master Mode Figure 13 shows the configuration of the Software Slave The following ticks are fixed and cannot be changed Software Slave e Enable Network Synchronisation e Network Master Mode IS NOT TICKED Optional e Input Network Trigger e Output Network Trigger e Synchronise Slave Clock to Network Clock For a description of the Synchronisation options please refer to Chapter 1 For more details on the use of GeoDAS please refer to the Geo
11. ata retrieval and setting of the parameters TE Due to the communication option a shielded cable consisting of 3 twisted pairs is required 1 1 3 Type C CCM Common Time Common Trigger Multinode Communication The data of every recorder can be accessed and retrieved from any of the recorders in the array Similarly the parameters of every recorder is adjustable from any of the accessed recorders This provides an extremely versatile system to operate TE As for the previous type a shielded cable consisting of 3 twisted pairs is required 1 1 4 Comparison of Options Table 1 Functional comparison of interconnected network options gt Communication from 2 5 Central IS Local Recorder Module E IE E gt gt s je E 38 58 S 2 E E H Q ke Q if Q Gi O O CO 2 oO 2 CO D O O IO Fea Eo Eo CCL v v v CCC v v v v ccm v v v 7 Gi GeoSIG GS_GSR_GCR_UserManual_App_G_Interconnection_V01 doc 08 12 2010 6 Appendix G ST Station CM Central Module Option B only Communication to all recorders lt Local Communication Option A CCL Common Time Common Trigger Local Communication Option B ccc Common Time Common Trigger Central Communication jaar Modem iaar L7 7 Central Module Option C CCM Common Time Common Trigger Multinode Communication Rec
12. ation to synchronise their internal time The time synchronisation is a permanent task for the Software Master The stations within the network permanently check their synchronisation status In case of not having the network time information available the Slave stations base on their internal real time clock The time of the last successful synchronisation is available in the status information of a Slave station and is written into every event header A GPS time source can be connected to the Software Master to achieve the time synchronisation of the whole array to the absolute time which allows easier correlation with recordings made by other arrays or recorders Common Trigger Triggering functionality of each recorder can be controlled using three flags Internal Trigger Network Trigger Output and Network Trigger Input By enabling or disabling these flags the behaviour of each station can be defined precisely as needed in the particular application This functionality can be summarised as follows e Enable disable self trigger The station triggers if an internal trigger condition is fulfilled and the Internal Trigger flag is enabled e Enable disable sending trigger to network The station transmits an active trigger message to the network if an internal trigger condition is fulfilled and the Network Trigger Output flag is enabled e Enable disable accepting trigger from network The station triggers if an active trigg
13. d directly to earth At the other junctions it is connected via an over voltage breaker This makes sure that there are no electrical problems no equalisation currents in case the potentials of the local earths are not the same This commonly occurs e g in dam installations GSR GCR recorder OPTION Interconnection Intercon plug To previous recorder or PC BUS Junction Box To next recorder BUS Cable shield Cable shield Local Protection Earth Figure 3 Interconnection wiring including Junction Box GS GSR GCR UserManual App G Interconnection VO doc 08 12 2010 GeoSIG Appendix G 9 e Es To Intercon os plug of GXR To previous recorder or PC BUS Shields of in coming and out going BUS DO NOT CONNECT BUS SHIELDS TO HOUSING To next recorder BUS 2 1 1 Central Communication Box The Interconnection Network type CCC uses a Central Communication Box at which in general a Computer is connected see Figure 5 Figure 5 Central Communication Box 300 x 200 x 120 140 mm The Computer is connected using the standard RS 232 cable delivered with the shipment The AC power cable is generally already assembled to the box Figure 6 shows the connection diagram of the Central Communication Box GeoSIG GS_GSR_GCR_UserManual_App_G_Interconnection_V01 doc 08 12 2010 10 Appendix G Central Communication Box Overvoltage protection e RS 232 RS 485 conve
14. er message arrives from the network and the Network Trigger Input flag is enabled If a station is not synchronised to the network it records based on the specified internal trigger condition An output for Local Communication is available at each recorder for local data retrieval and setting of parameters The reliability of the monitoring network is high because a malfunction of a recorder would affect only the location of malfunction in the array If the network is interrupted each of the recorders will perform as a stand alone recorder by recording whenever the instrument s event recording trigger level is reached GeoS IGy GS_GSR_GCR_UserManual_App_G_Interconnection_V01 doc 08 12 2010 5 Appendix G 1 1 1 Type A CCL Common Time Common Trigger Local Communication This type of array enables common triggering and common time in the simplest form The data are stored locally in every recorder and have to be retrieved locally from each recorder separately due to the availability of Local Communication only Similarly the setting of parameters of each recorder has to be performed on the site of each recorder TE A shielded cable with a single twisted pair is sufficient for this type 1 1 2 Type B CCC Common Time Common Trigger Central Communication A central communication module is utilised in this option The module is connected to the network as a central from which all of the recorders can be accessed for d
15. internal interconnection card GS_ICC_V05 There can only be one Network Driver e The first recorder in the bus is configured as Software Master whereas all the other recorders are configured as Software Slaves Refer to Chapter Software Configuration below e fa GPS is available it is connected to the Software Master first instrument GeoSIG GS_GSR_GCR_UserManual_App_G_Interconnection_V01 doc 08 12 2010 14 Appendix G To summarise there are two types of instrument configurations e GXR Interconnection Master first e GXR Interconnection Slave all except first TE OVP boxes are not shown in Figure 9 2 2 2 CCC The following different configurations are possible see Figure 10 The Central Communication Box serves as Network Driver Since there is only one network driver required the jumpers J91 and J92 on the internal interconnection card GS_ICC_V05 of the recorders are not inserted The first recorder in the bus is configured as Software Master whereas all the other recorders are configured as Software Slaves Refer to Chapter Software Configuration below If a GPS is available it is connected to the Software Master first instrument Communication through the network requires terminations in the first node of the network Central Communication Box and in the last one last recorder To summarise there are three types of instrument configurations GXR Master without Termination first recorder closest
16. le shield needs to be connected to the Central Communication Box and to the junction boxes GeoSIG GS_GSR_GCR_UserManual_App_G_Interconnection_V01 doc 08 12 2010 12 Appendix G Cable shield connected here only Interconnection cable TT ET Wl JO Central Communication Box Interconnection Junction Box Next to PC next to first recorder Figure 8 Shield connection 2 1 2 Interconnection Signals The following table shows the Interconnection signals and their position on the orange connectors in the junction box and in the Central Communication Box The signals on pin 1 to 4 are only used for the network types CCC and CCM In the case of CCC the names given indicate the signal directions from the Central Communication Box point of view In a network of type CCM the four signals are used bi directionally N PWR is only used if the Centralised Power Supply Option has been selected Table 3 Interconnection Signals Signal Needed for Central Communication Next Junction Box Network Type Box or Junction Box 485 TX H CCC CCM 485_TX_L CCC CCM 485_RX_H CCC CCM 485_RX_L CCC CCM OO NO 01 PIWIMD I OO NO 01 PIWIMD I N_PWR Optional N_SYNC CCC CCM CCL N_GND CCC CCM CCL N_GND GS GSR GCR UserManual App OG Interconnection VO1 doc 08 12 2010 GeoSIG Appendix G 13 2 1 3 Interconnection Cable The appropriate choice of the interconnection cable
17. order Junction Junction Box Box Figure 1 Topology of the Interconnected Recording Network Options GS GSR GCR UserManual App G Interconnection VO doc 08 12 2010 GeoSIG Appendix G 7 2 Installation 2 1 Physical Interconnection The principle of the interconnection wiring of all types of networks described above is the same Interconnection Junction Boxes are supplied in order to facilitate on site wiring Since these networks can extend over hundreds of meters involving long cables it is important to protect the recorders against over voltages such as electrostatic discharges and lightning and differences in local earth potentials The protection is realised in the following ways e Advanced Lightning and over voltage protection is implemented in the Interconnection Junction Boxes e An interconnection option board which takes care of the galvanic isolation is installed in the recorders Figure 2 shows the Interconnection Junction Box which is used along with each recorder Figure 2 Interconnection Junction Box 150 x 150 x 80 mm The interconnection wiring is the only wiring which is really site specific in other words carried out by the customer The other wiring such as INTERCON connection cable RS 232 PC connection cable or AC cable is pre assembled The wiring of the interconnection cable is straight through which makes installation easy In order to achieve a maximum p
18. rks or registered trademarks of their respective holders All rights reserved GeoSIG Ltd Switzerland GS GSR GCR UserManual App OG Interconnection VO1 doc 08 12 2010 GeoSIG Appendix G 3 Table of Contents Ja ele ele ON ER RE 4 1 Description and Funetionaly nenne nee GR GE EE Sk en 4 1 1 Common F nctionally 2 2 2 2 2 em leisen 4 1 1 1 Type A CCL Common Time Common Trigger Local Communication 5 1 1 2 Type B CCC Common Time Common Trigger Central Communication uu ee 5 1 1 3 Type C CCM Common Time Common Trigger Multinode Communication 5 1 1 4 Comparison of Options ee RA AA AA ee eee AA AA AA AR Ge AA Ge ee ee ee Ge ee ee ee AA Ge ee ee ee 5 2 BE AO AE EE N N aja wna via vita yawa OE YANI Ee EIE 7 2 1 Physical InterconnectiON ese se ee AA Ge AA Re RA AG AA Ge AA AR ee AA Ge AA Na KK ee ee RA de ee ke ee ee 7 2 1 1 Gentral Communication BOX AR ee elek 9 2 1 2 Interconnecti n Signals zur near 12 2 1 3 Inlerconnectlion Cable naeh anne een EE EE OE EE 13 2 2 Interconnected eege EC 13 EE Mee EE N RE RE EE 13 PEE COC RE RE EE ER RE N OE EE EE ER N 14 AE RO EE EE N ER EE N 14 22 4 Software Configuration een ER EE ai kaaa 18 2 3 Verification of the Installation ou ceeecececcesesceeeeeeceeesaeaueeseeeesueuaueaeesseseeeeueaueasaeeeseuaeaaaeeeeeneeaeas 19 GeoSIG GS_GSR_GCR_UserManual_App_G_Interconnection_V01 doc 08 12 2010 4 Appendix G
19. rotection and system reliability a couple of points are important to take care during installation mainly earth and cable shield connections These points are described in the following Figure 3 shows a recorder the corresponding junction box Interconnection Junction Box and the connection of the bus interconnection cabling Each recorder is connected to the bus cable via a junction box which goes with it TE Both the recorder and the junction box need to be connected to local earth There is an earth screw on both housings which can be used for this purpose The earth cable is connected first to the junction box and then goes on to the recorder The Junction Box is connected to the recorder using the grey cable already assembled to the box Its length is about 1 m The cable coming from the previous recorder and the cable going to the next recorder are connected as indicated in Figure 4 GeoSIG GS_GSR_GCR_UserManual_App_G_Interconnection_V01 doc 08 12 2010 8 Appendix G TE The shields of the interconnection cables are connected to the yellow connectors as indicated in Figure 4 Do not connect them to the housing or local earth There is one exception where the shield is connected to local earth It is in the junction box ot the first recorder in Interconnection Networks of the type CCL and CCM no Central Communication Box is used This way the cable shield of the interconnection cable is only at one point connecte
20. rsion Local Protection Earth 15 VDC or 230 VAC Figure 6 Interconnection Wiring incl Central Communication Box The following table shows the connection of the AC power cable Its location on the card is indicated in Figure 7 Connectors and fuses inside Central Communication Box Table 2 AC Connector Description Signal Colour Pin PE Protection Earth Yellow green 1 2 3 L Phase Brown 4 5 6 7 N Neutral Light Blue 8 IS Make sure that the AC main supply is disconnected before starting to manipulate connections inside the box The interconnection cable is connected as indicated in Figure 7 It is the top connector not to be confused with the main supply connector on the bottom TE The interconnection cable shield needs to be connected to the EMV stuffing tube It is here where the entire cable shield is connected to earth The box itself is connected to earth with the earth signal yellow green in the main supply cable or in newer instruments by the earth screw on the outside of the box GS GSR GCR UserManual App G Interconnection VO doc 08 12 2010 GeoSIG Appendix G 11 To closest recorder BUS CONNECT CABLE SHIELD TO HOUSING USING EMV STUFFING TUBE RS 232 PC connection DC secondary fuse 230 VAC fuse 230 VAC main supply Figure 7 Connectors and fuses inside Central Communication Box Figure 8 shows the way the cab
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