Remote Bus Extender Slave Module

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1 Triguard SC300E MRB01XS Remote Bus Extender Slave Module (MRB01XS) Issue 4 October 2005 INTRODUCTION AND TECHNICAL DATA PURPOSE A Remote Bus Extender Slave Module MRB01XS (Figure 1-1 ) is located in each of the three right-hand slots (A, B and C) of a remote extension chassis. Fibre optic cables link each MRB01XS to a corresponding master module (MRB04XM) in a local extension chassis. The master and slave modules operate together as part of an interface between the I/O modules in the remote extension chassis and the processor modules (MPPs) in the main chassis. Figure 2-2 shows how the MRB01XSs are linked by fibre optic cables to the MRB04XMs and then by ribbon cables to the MPPs. This document is intended to provide a general understanding of the function of the MRB01XS sufficient to enable basic maintenance operations to be effected in the field. NOTE The chassis that contains the MRB01XS will be referred to as the remote chassis throughout this document. ASSOCIATED DOCUMENTATION Reference No Title Chassis User Manual MPP Processor Module User Manual MRB04XM Remote Bus Extender Master Moudle User Manual TBT Bus Terminator User Manual

2 Triguard SC300E Figure 1-1 MRB01XS General view and front panel detail 2 MRB01XS October 2005 Issue 4

3 Triguard SC300E MRB01XS Remote Bus Extender Slave Module SPECIFICATION Model Fibre optic ports Fibre optic cable (not supplied) Maximum drive loss Indicators Module power consumptin Overall size (mm) Overall size (inches) Weight MRB01XS 1 transmit, 1 receive Multimode 62.5/125µm cable & 50/125µm cable (ST connector to ST connector) 50/125µm cable = 9dB 62.5/125µm cable = 16dB Health, Tx, Rx 3W 400(9U)H x 397L x 28W 15.75H x 15.63L x 1.1W 1.0kg ENVIRONMENTAL SPECIFICATIONS The maximum ambient temperature measured at the hottest point within the Triguard system shall not be greater than 60 degrees centigrade. Temperature operating: Temperature storage: Humidity: +5 C to +60 C -25 C to +70 C 5% to 95% non-condensing at ambient <40 C Certification: General Certification: Ref. SC300E TMR Product Guide (ref ) TRANSPORT AND HANDLING The MRB01XS must be transported and stored in its original packing material which should be retained for this purpose. MRB01XS October 2005 Issue 4 3

4 Triguard SC300E TECHNICAL DESCRIPTION PHYSICAL The MRB01XS Remote Bus Extender Slave Module is a 9U high PCB with integral front panel. A general view of the main components is shown in Figure 2-1. EXTERNAL CONNECTIONS The MRB01XS is plugged into the remote chassis backplane bus system via two DIN41612 connectors J1 and J2. Connections to the associated master module are via fibre-optic cables which plug into transmitter and receiver connections on the front panel. CONNECTOR SUMMARY Table 2-1. Connector summary Connector Location Type J1 (I/O bus) J2 (expansion bus) Transmit (Tx) and Receive (Rx) Rear edge of MRB01XS (Figure 2-1 ) Rear edge of MRB01XS (Figure 2-1 ) MRB01XS front panel 96-pin DIN41612 type C male 96-pin DIN41612 type C male ST Connected by 62.5/125 m multimode cable CONFIGURATION AND INDICATORS The MRB01XS has no user configuration. The Tx and Rx LEDS on the front panel flash to indicate that their respective fibre optic links are passing data. The single Health indicator (green LED) on the front panel illuminates in normal operation. 4 MRB01XS October 2005 Issue 4

5 Triguard SC300E MRB01XS Remote Bus Extender Slave Module U3 (FPGA) Fuse F1 Connector J1 Connector J2 Figure 2-1 MRB01XS Side view MRB01XS October 2005 Issue 4 5

6 Triguard SC300E EXPANSION BUS Expansion bus architecture The main and any local extension chassis are interconnected by ribbon cables running between expansion bus connectors e on their respective chassis backplanes as shown in Figure 2-2. The expansion bus may be further extended to up to four remote chassis per master module (up to an overall maximum of 15 chassis per SC300E system) by means of fibre-optic cables terminated at master and slave remote bus extender modules. The maximum number of remote chassis per SC300E system is eleven given by the combination: 1 x main + 3 x local + 11 x remote = 15 chassis total. Figure 2-2 Bus extension to remote chassis NOTE The Remote Bus Extender Slave Modules will only support the chassis in which they are fitted. Additional chassis CANNOT be added to a Remote Extension Chassis. THEORY OF OPERATION Figure 2-2 shows the general architecture of the system and identifies the position of the MRB01XS. The overall function of the system is to interface the I/O modules of the remote chassis with the processors in the main chassis. At a local level, the MRB01XS terminates one end of the fibre optic data link, operating as a slave to the associated master module at the other end of the link. 6 MRB01XS October 2005 Issue 4

7 Triguard SC300E MRB01XS Remote Bus Extender Slave Module Remote chassis address selection is controlled from the associated remote bus extender master module MRB04XM. Refer to the Remote Bus Extender Master Module User Manual (Ref ) for details. There are no address setting links or switches on the MRB01XS itself. The chassis address setting links UNIT ID 0 to 3 at the rear of the remote chassis backplane are not used. Links fitted in these positions will have no effect. The primary function of the MRB01XS is to respond to remote chassis I/O module read/write requests received via the fibre optic data link. The presence of the fibre optic data link precludes the use of a serial communications module in a remote chassis. All other types of I/O module are supported. The module provides identical timing for remote chassis I/O operations as the MPP provides for main chassis I/O operations. Although the MRB01XS is part of a triplicated system, the module itself is simplex in operation. Redundancy derives from the fact that there are three such modules in each remote chassis. The MRB01XS supports both single and dual slot hot repair. Figure 2-4 shows the main functional areas of the MRB01XS circuit. Buffers regulate the twoway flow of data and control signals through the module, under the overall control of the control logic. Power supplies A pair of auctioneering diodes combines the two 5.4Vdc power supplies from the chassismounted PSUs into a single 5Vdc (nominal) supply for the module. Capacitive decoupling and overcurrent protection is provided. MRB01XS October 2005 Issue 4 7

8 Triguard SC300E UNIT ID UNIT ID UNIT ID Figure 2-3 MRB01XS - Related backplane connectors 8 MRB01XS October 2005 Issue 4

9 Triguard SC300E MRB01XS Remote Bus Extender Slave Module Figure 2-4 MRB01XS - Block diagram MRB01XS October 2005 Issue 4 9

10 Triguard SC300E SERVICING SCOPE The MRB01XS is not field repairable. Field servicing operations are confined to the total replacement of faulty MRB01XS. Return the faulty MRB01XS for repair. DIAGNOSIS A faulty MRB01XS will be apparent by a single I/O channel failure affecting all the field devices serviced by a particular remote chassis. The Health LED may also be extinguished CONFIGURATION There are no configurable links or switches. REMOVAL AND REPLACEMENT There are no special warm start or other removal and replacement procedures. Simply withdraw the faulty module, replace it with a good one, and check that the Health LED illuminates. 10 MRB01XS October 2005 Issue 4

11 Triguard SC300E MRB01XS Remote Bus Extender Slave Module SERVICE SUPPORT SPARE PARTS Spare parts and technical advice can be obtained from your local area offices. MRB01XS October 2005 Issue 4 11

Chassis Power Supplies

PDC24 / PAC Chassis Power Supplies (PDC24 / PAC) Issue 3 October 2005 INTRODUCTION PURPOSE Two Power Supply Units (PSUs) provide a dual-redundant source of 5.4Vand 12Vdc onto the backplane for the modules