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Programmable Safety Systems

PSS-Range

PSS SB ACTIVE JUNCTION BASIS

Operating Manual

Item No. 20 74

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Summary of Contents for 20 748-03

Page 1: ...Programmable Safety Systems PSS Range PSS SB ACTIVE JUNCTION BASIS Operating Manual Item No 20 748 03 ...

Page 2: ... JUNCTION BASIS 7 Rules for incorporation 7 Rules for bus termination 7 Determining the bus cable runs and transmission rate 8 SafetyBUS p interfaces 9 SafetyBUS p main branch 9 SafetyBUS p sub branches 9 Installation 10 Supply voltage 11 Insulation voltage test 11 Connection 12 Connecting the supply voltage 12 Earthing 12 Main branch 12 Sub branches 12 Display elements 14 Faults 14 Technical deta...

Page 3: ...nment and contains the lines for the supply voltage for the field devices as well as the data lines The maximum extension of a sub branch is limited by a number of different factors number of bus subscribers in the sub branch transmission rate current consumption of the connected field devices etc The base unit PSS SB ACTIVE JUNCTION BASIS is designed for the formation of two sub branches If more ...

Page 4: ...y related devices on SafetyBUS p It is not assigned a Device Address Although the Active Junction is not registered as a bus subscriber it must be regarded as a bus subscriber when establishing the transmission rate If there is a short circuit in the supply voltage to a sub branch near to the Active Junction up to ca 10 m cable runs the supply voltage to the sub branch will be switched off The Sup...

Page 5: ...ional e V is binding Precise details on the PSS SB ACTIVE JUNCTION BASIS are provided in the Technical details section Use of the device outside the specifications given here will be deemed as improper use Any component technical or electrical modifications will be deemed as improper use Use of the PSS SB ACTIVE JUNCTION BASIS outside the areas described in this manual will be deemed as improper u...

Page 6: ...se for which it is intended Damage can be attributed to not having followed the guidelines in the documentation Operating personnel are not suitably qualified The housing was opened Any type of modification has been made e g exchanging components on the PCB boards soldering work etc Safety guidelines The information and requirements stipulated in the SafetyBUS p Installation Manual are valid when ...

Page 7: ...ion allows you to build a star or tree structure rather than the linear topology specified for SafetyBUS p This reduces the effective electrical cable runs no return line needed The relationship of the cable runs to the transmission rate should be maintained Where possible plan to use only complete I O Groups in a sub branch This increases the availability if an error occurs Rules for bus terminat...

Page 8: ...tains Active Junctions account for them with the virtual cable runs as shown in Table 2 Number of Active Junctions 1 2 Virtual cable runs total 50 m 100 m 90 m Cable runs lDistance between adjacent Active Junctions in the main branch lDistance 10 m lDistance 10 m MD LD I OD I OD I OD I OD main line l Distance Active Junctions I OD I OD main branch l Distance l Distance Fig 3 Active Junction arrang...

Page 9: ...ion to the SafetyBUS p sub branches is via 4 pin screw connectors 1 n c 2 CAN_L brown 3 CAN_GND white 4 n c 5 CAN_SHLD 6 n c 7 CAN_H green 8 Supply voltage for fibre optic couplers from Pilz 9 n c n c not connected 1 9 5 6 Male 9 pin D Sub connector 9 pin 1 2 3 4 X1 1 2 3 4 X2 Fig 5 Configuration of the interface to the SafetyBUS p sub branches 4 pin screw connectors X1 X2 1 CAN_L brown 2 GND whit...

Page 10: ...lation Manual The PSS SB ACTIVE JUNCTION BASIS is enclosed in a 45 mm P99 housing suitable for DIN rail mounting The device should be installed in a control cabinet with a protection type of at least IP54 There are two notches on the back of the unit for DIN rail attachment If you are installing the unit on to a vertical DIN rail ensure that it is mounted securely by using a retaining bracket or a...

Page 11: ...on the device If this occurs the affected I O Groups will switch to a STOP condition and all the outputs in the affected I O Groups will be switched off You should therefore take note of the relevant EMC measures The supply voltage to a sub branch can take a max 3 A load WARNING Safe electrical isolation must be ensured for the external 24 V supplies Failure to do so could result in electric shock...

Page 12: ...cable is made correctly in each bus connector Please read the information in chapter Installation and Assembly of the SafetyBUS p Installation Manual Main branch Connect the cable screening with low impedance to the screen bar or earth bar this only needs to be done once for the whole main branch Fig 8 Please refer to the information in the chapter entitled Installation and Assembly in the SafetyB...

Page 13: ...able screening Galvanic isolation Base unit PSS SB ACTIVE JUNCTION BASIS Field device Screen bar earth bar Functional earth X0 X3 X4 X5 X1 X2 MD LD I OD I OD I OD 2 3 sub branch 1 sub branch 2 X0 X3 X4 X5 X1 X2 2 3 main branch 4 4 4 4 24 V 0 V 5 24 V 0 V sub branch 1 sub branch 2 ...

Page 14: ...SS SB ACTIVE JUNCTION EXPANSION can be used to locate the error LED POWER sub branch 1 sub branch 2 Signal Lights green Flickers green Lights red Lights green Lights red Flickers green Lights red Lights green Lights red Key Supply voltage present screw connector X0 Data traffic in sub branch 1 Signal error in sub branch 1 permanent dominant signal level Supply voltage present in sub branch 1 screw...

Page 15: ...8 2 27 03 93 EMC 24 VDC 23 4 30 VDC including residual ripple of max 1 2 V 120 mA plus load currents from the sub branches max 6 A and load currents for fibre optic couplers max 25 mA per fibre optic coupler Yes optocoupler between the SafetyBUS p main branch and the sub branches SafetyBUS Male 9 pin D Sub connector Supply and sub branches 4 pin screw connector Max 3 A load current per sub branch ...

Page 16: ... Ostfildern Germany Telephone 49 711 3409 0 Telefax 49 711 3409 133 E Mail pilz gmbh pilz de In many countries we are represented by our subsidiaries and sales partners Please refer to our Homepage for further details or contact our headquarters Technical support 20 749 02 06 04 Printed in Germany ...

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