SILBUS Termination Unit Use
Contents
1. SIGNAL ane MORTO IC Ce SIGNAL MONITOR 112 SIGNAL TO CHANNEL TOFIELD GENERATOR TERMNATON UNIT NETWORK TERMNATION UNT FROM FIELD TYPE SILBUS OAS1 BEG TYPE SILBUS OAS1 END NETWORK LOM gt 3 COMMON COMMON 14 7 a COMMON 14 2 COMMON 7 6 EARTH 7 7 EARTH2 NOTE 1 LANYARD ONLY REQUIRED IN THREE WIRE SYSTEMS EARTH EARTH Figure 4 Typical connection diagrams SILBUS TERMINATION UNIT 9 OF 10 120 339 12 TYPE SILBUS OAS1 USER S MANUAL Issue 01 7 1 EARTH CONNECTIONS The SILBUS OAS1 BEG has two earth connection terminals 6 7 these terminals must be connected independently to a low impedance lightning earth point using a minimum of 4mm conductors These conductors shall be as short as possible and twists and bends should be avoided if proper lightning protection is to be afforded The two earth conductors should be segregated from all other panel wiring to reduce any induction of lightning derived energy into signal conductors within the control panel If the lightning earth point is far away from the control panel then an earth stud or terminal shall be provided on the control panel gear tray to allow the earth conductors to be increased to 8mm 8 SPECIFICATIONS mr M Termination unit Wes SILBUS OAS1 BEG and SILBUS OAS1 END Cage clamp 4mm 112. 3 FIGURE O E 3 1 GENERAL 4 ePRONTPANELLA TODT eee eee en 4 Or TYPIGAL AP PIG AION c E E 5 CR THREE WIRE CONVE YO E A AE io 5 Sie WONO CONVOY 6 4 THEORY OF OPERATION aaa 6 AAA UU 6 AZ o pita OF OL ERR 7 SOPEPRATINGSTNESTERBOTIONS s iidem tiem seed idea 7 CONFIGORATION 8 7 TERMINATIONS AND GONNECTI ON Seniat 9 7 1 EARTH 10 8 SPECIFICA TONS 10 PHOTOGRAPHS Photograph 1 SILBUS OAS1 XXX front 4 Photograph 2 Access to configuration switch and potentiometer 5 Photograph Termination switch and potentiometer 8 TABLES Table 1 Test facility connection 5 y Table 2 Termination unit connection 5 9 FIGURES Figure 1 Three wire conveyor termination and control panel lightning protection 5 Figure 2 SILBUS Channel pulse with 6 Figure SILBUS OAS 1 XXX terminal 9 Figure 4 Typical connection
3. nennen 9 SILBUS TERMINATION UNIT 3 OF 10 120 339 12 TYPE SILBUS OAS1 USER S MANUAL Issue 01 PTS FH austdac 1 GENERAL DESCRIPTION The SILBUS termination unit type SILBUS OAS1 XXX is an explosion protected DIN rail mounting module that is used to provide a SILBUS network termination SILBUS test points and head end lightning protection Typically a termination unit is required at both ends of a SILBUS network or transmission line to help stop reflections and ringing in the SILBUS waveform The SILBUS OAS1 XXX is produced in two versions the SILBUS OAS1 BEG for the head end and the SILBUS OAS1 END for the tail end of the SILBUS network The SILBUS OAS1 BEG provides network termination test facilities as well as lightning protection for head end control panels while the SILBUS OAS1 END only provides network termination and test facilities The termination unit is housed within a DIN rail mounting enclosure measuring 45mm W x 75mm x 110mm D The front panel is located between the two top of enclosure mounted terminal blocks to provide easy access to the two test points 2 FRONT PANEL LAYOUT The termination front panel is located between the terminal blocks that form part of the enclosure The front panel has two 2mm test points spaced at 19mm that provide test access to the SILBUS signal and common signals The front panel is shown in photograph 1 below austdac
4. eP IVIG Technologies uer SE MENT FMC Technologies Chile Ltda Callao 2970 Oficina 704 Edificio Studio Las Condes Fono 56 2 22320825 austdac PTY LTD Title SILBUS TERMINATION UNIT TYPE SILBUS OAS1 USER S MANUAL Document Number 120 339 12 Issue p Av SIL BUS ON UNIT SILBUS TERMINATION TYPE SILBUS OAS1 BEG 1 OF 10 E AME REVISION CONTROL Original 2010 01 18 Austdac Pty Ltd Unit 1 4 Packard Avenue Castle Hill NSW 2154 Australia PO Box 6486 Baulkham Hills Business Centre NSW 2153 Australia Phone 61 2 8851 5000 Fax 61 2 9899 2490 Website www austdac com au Austdac Inc 455 Lowries Run Hd Pittsburgh PA 15237 USA Phone 1 888 254 9155 Fax 1 412 635 0179 Copyright 2010 01 18 This document remains the property of Austdac Pty Ltd It is subject to its recall and must not be reproduced in part or whole or its contents divulged to third parties without prior written approval from Austdac Pty Ltd SILBUS TERMINATION UNIT 2 OF 10 120 339 12 TYPE SILBUS OAS1 USER S MANUAL Issue 01 A Als TABLE OF CONTENTS i e Eee plemME 2 OF CONTENT c 3 PAOTOGRAR 3 Uiscocm
5. ORRECT LINE TERMINATION OR STUBS OR BRANCHES a RINGING BE REDUCED BY USING SILBUS OAS1 OR BY SAMPLING POINTS ELIMNATING STUBS uS 50 150 250 500 1000 OuS 100 200 Figure 2 SILBUS Channel pulse with ringing By correctly terminating the ends of a SILBUS network transmission line the ringing can be eliminated or significantly reduced to a point where it will not cause any incorrect operation of the SILBUS system SILBUS or Dupline is an extremely reliable and noise tolerant SILBUS TERMINATION UNIT 6 OF 10 120 339 12 TYPE SILBUS OAS1 USER S MANUAL Issue 01 A system that is in most cases tolerant of unterminated networks but some installations due line length branches and system architecture require line termination to function reliably Once the line termination has been fitted the system will operate correctly without further effort on behalf of installation staff 4 2 LIGHTNING PROTECTION The SILBUS OAS1 BEG provides lightning protection in the form of semiconductor clamping and gas discharge tube clamping with diversion to earth Further protection is provided by common mode and differential inductive isolation A high speed semiconductor clamp between the signal and common lines will clamp any differential lightning induced voltages to approximately 22 volts This clamp is backed up by a differential and common mode three terminal gas discharge device that shunt
6. austdac AM SIL BUS A SIL BUS SILBUS TERMINATION UNIT SILBUS TERMINATION UNIT TYPE SILBUS OAS1 BEG TYPE SILBUS OAS1 END Photograph 1 SILBUS OAS1 XXX front panel layout SILBUS TERMINATION UNIT 4 OF 10 120 339 12 TYPE SILBUS OAS1 USER S MANUAL Issue 01 austdac PM The front panel can be snapped out and removed by using a wide bladed flat screw driver to gain access to the configuration potentiometer and switch Photograph 2 below shows the front panel removed and the location of the configuration potentiometer and switch The two test sockets are also shown a DE ir r A EA Photograph 2 Access to configuration switch and potentiometer 3 1 THREE WIRE CONVEYOR 2 1 SIGNAL LANYARD 8 7 MONITOR 1102 2 11 SIGNAL MONITOR TO CHANNEL GENERATOR AND REMAINDER TERMNATION UNIT SWITCH EOL EOL TERMNATION UNIT OF PANEL SILBUS OAS1 BEG 2 bs TYPE SILBUS OAS1 END 7 8 23 COMVON COMMON 1402 2 14 COMMON 2 6 EARTH 27 EARTH2 EARTH EARTH HEAD END CONTROL PANEL TAIL END UNIT Figure 1 Three wire conveyor termination and control panel lightning protection SILBUS TERMINATION UNIT 5 OF 10 120 339 12 TYPE SILBUS OAS1 USER S MANUAL Issue 01 The figure above shows how the SILBUS OAS1 BEG and SILBUS OAS 1 END can be used to correctly terminate a three
7. awg maximum sa 45mm W x 75mm H x 110mm D yc S 145g wine cT TS35 DIN rail or screw mount M4 on 85mm x 61mm centres alo lg NITET mm IP20 Enclosure Maternal Polycarbonate 30 GV UL 94 V 1 ENCO SOCO UT E RAL 7032 Grey Terminal MATENA REOR T Polycarbonate UL 94 V 2 Terminal block nennen nennen nennen nnns Black Operating temperature 0 to 40 Storage temperature 20 C to 80 Operating relative humidity 1096 to 9096 Non condensing Maximum clamping voltage BEG 22V Maximum impulse current 8 20 5 BEG DE aa aa DE a Da a De ea aa cien an 5kA SILBUS TERMINATION UNIT 10 OF 10 120 339 12 TYPE SILBUS OAS1 USER S MANUAL Issue 01
8. e configuration or setup when the SILBUS OAS1 XXX is installed on a SILBUS network There is no configuration required for the lightning protection part of the SILBUS OAS1 BEG The termination unit needs to be configured to provide just the correct amount of termination load to absorb the reflections without adding any additional load that may stop long system networks from operating correctly due to IxR losses austdac Photograph 3 Termination switch and potentiometer Configuration procedure to be provided SILBUS TERMINATION UNIT 8 OF 10 120 339 12 Issue 01 TYPE SILBUS OAS1 USER S MANUAL 7 TERMINATIONS AND CONNECTIONS All connections to the termination unit are via cage clamp terminals around the perimeter and near the front of the DIN rail mounting enclosure these terminals can accommodate up to 4mm 11awg conductors There are seven possible connections to the termination unit these are shown in the following tables and diagrams TERMINATION UNIT CONNECTION DETAILS BEG END 6 8 LANYARD YELLOW ___ NOTE 1 FITTED TO SILBUS OAS1 END BUT NOT USED IN TAIL END APPLICATIONS Table 2 Termination unit connection details 7 1 SIGNAL LANYARD 8 MONITOR 1102 SIGNAL MONITOR 1102 TERMNATION UNIT TERMNATION UNIT TYPE SILBUS OAS1 BEG TYPE SILBUS OAS1 END 7 8 COMVON COMMON 1402 COMMON 14 7 6 EARTH1 2 7 EARTH2 Figure 3 SILBUS OAS1 XXX terminal diagram
9. s lightning induced energy away to earth Lightning induced energy is typically very high frequency so inductive filters are used to isolate the control panel terminals of the SILBUS OAS1 BEG from high energy spikes It is for this same high frequency that any wiring from the earth terminals of the SILBUS OAS1 BEG must be carried out in a low inductive manner failure to do so will render the SILBUS OAS1 BEG ineffective in reducing damage from lightning induced energy 5 OPERATING INSTRUCTIONS The termination unit does not require any operator action to operate once it has been installed within an IP54 host enclosure and configured correctly Test connection facilities are provided on the front panel of the termination unit to provide a method of connecting test equipment to the network while the system is in operation Care should be exercised when using these test facilities to not short the SILBUS network and cause tripping of conveyor drive motors and similar plant TERMINATION UNIT TEST FACILITY CONNECTIONS FRONT PANEL NAME COLOUR NETWORK SIGNAL TERMINAL No SIGNAL BLACK COMMON Table 1 Test facility connection details The test facilities are in the form of two 2mm test sockets spaced at 19mm These test sockets will accept standard multimeter probes and leads SILBUS TERMINATION UNIT 7 OF 10 120 339 12 TYPE SILBUS OAS1 USER S MANUAL Issue 01 hi m 6 CONFIGURATION The termination switch and potentiometer requir
10. wire conveyor control system to prevent ringing and resultant interference with the SILBUS signal waveform The SILBUS OAS1 BEG also provides lightning protection to the conveyor control panel The SILBUS OAS1 END does not provide any lightning protection The individual transmitters distributed along the conveyor should also be protected against lightning if required 3 2 TWO WIRE CONVEYOR A two wire conveyor control system would be terminated and protected in much the same way as the three wire conveyor except that the lanyard conductor would not be used and terminal 8 on the SILBUS OAS1 BEG would not be used 4 THEORY OF OPERATION 4 1 NETWORK TERMINATION If a transmission line is not terminated correctly at its end points reflections can occur that will cause ringing on the SILBUS waveform This ringing can cause the channel generator to misinterpret the channel pulse low period and falsely decide that a channel is on when it is not The channel generator uses a sampling method to determine if a channel has been pulled down by a transmitter if the ringing coincides with the sampling periods the channel generator could be fooled into making an incorrect decision Figure 2 below shows the ringing crossing below the on decision voltage point V RINGING CAN CAUSE FALSE TRIGGERING OF PULSE WIDTH MODULATION E Vi CORRECT FALSE TRIGGERED i POSITION OUTBOUND PULSE OF WIDTH MODULAT ION ES RISING EDGE RINGING IS CAUSED BY INC
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