User guide

Trusted

Module T8449

Issue 13 Apr 10 PD-T8449 3

Table of Contents

1. Description ................................................................................................................................8

1.1. Field Termination Unit (FTU).....................................................................................................9

1.2. Field Interface Unit (FIU) ...........................................................................................................9

1.3. Host Interface Unit (HIU).........................................................................................................10

1.4. Front Panel Unit (FPU)............................................................................................................10

1.5. Line monitoring and output states ...........................................................................................11

1.6. Housekeeping .........................................................................................................................11

1.7. Fault Detection/Testing ...........................................................................................................11

1.8. Sequence of Events Characteristics .......................................................................................12

1.9. Output Switch Structure ..........................................................................................................12

1.9.1. Switch Diagnostics ..................................................................................................................14

1.9.2. Short Circuit Protection Issues ................................................................................................14

1.9.3. Group Fail Safe Switches........................................................................................................14

1.10. Control / Feedback circuits......................................................................................................14

1.11. Valve Testing...........................................................................................................................15

1.11.1. Positional Feedback ................................................................................................................15

1.11.2. Normal Operation....................................................................................................................15

1.11.3. Test Operation ........................................................................................................................16

2. Installation ...............................................................................................................................18

2.1. Module Insertion/Removal.......................................................................................................18

2.2. Field Termination Assembly (FTA) Selection..........................................................................19

2.3. Termination .............................................................................................................................19

2.4. Module Pinout Connections ....................................................................................................20

2.5. Trusted

Module Polarisation/Keying. ...................................................................................21

3. Application...............................................................................................................................22

3.1. Module Configuration ..............................................................................................................22

3.2. T8449 Complex Equipment Definition.....................................................................................22

3.2.1. Rack 1: DO_TEST ..................................................................................................................24

3.2.2. Rack 2: STATE .......................................................................................................................24

3.2.3. Rack 3: AI_MXIN.....................................................................................................................26

3.2.4. Rack 4: CI_MXDAT.................................................................................................................27

3.2.5. Rack 5: MXOUT ......................................................................................................................27

3.2.6. Rack 6: ETM_EST ..................................................................................................................28

3.2.7. Rack 7: LINEFLT.....................................................................................................................29

3.2.8. Rack 8: DISCREP ...................................................................................................................29

3.2.9. Rack 9: HKEEPING ................................................................................................................30