Rockwell Automation T8442 Trusted TMR Speed Monitor - Manual (Page 4)

Trusted
TM
Module T8442
Issue 8 Apr 10 PD-T8442 4
Table of Contents
Product Range..........................................................................................................................................9
1. Description .................................................................................................................................10
1.1. Product Overview.......................................................................................................................10
1.2. Speed Monitor Sub-Assembly Architecture Overview ...............................................................11
1.2.1. Host Interface Unit (HIU) ...........................................................................................................12
1.2.2. Speed Field Interface Unit (SFIU)..............................................................................................12
1.2.3. Speed Field Termination Unit (SFTU) .......................................................................................13
1.2.4. FPU Front Panel Unit (FPU) ......................................................................................................13
1.2.5. T8846 Speed Input Field Termination Assembly (SIFTA) .........................................................13
1.2.6. T8891 Speed Output Field Termination Assembly (SOFTA) ....................................................13
1.3. Speed Monitor............................................................................................................................14
1.3.1. SFIU...........................................................................................................................................15
1.3.2. SFTU..........................................................................................................................................15
1.3.3. SIFTA.........................................................................................................................................16
1.3.4. SOFTA.......................................................................................................................................16
1.3.5. Common Trusted TM System I/O Safety Features ......................................................................17
1.3.6. Speed Monitor Module Safety Features ....................................................................................18
2. Installation..................................................................................................................................19
2.1. Module Insertion/Removal .........................................................................................................19
2.2. External Interfaces.....................................................................................................................19
2.2.1. Speed Output Signals ................................................................................................................19
2.2.2. Speed Input Signals...................................................................................................................19
2.2.3. Communications ........................................................................................................................19
2.3. Field Interface Connector ..........................................................................................................20
2.4. Trusted TM Module Polarisation/Keying.......................................................................................23
3. Application .................................................................................................................................24
3.1. System Configuration.................................................................................................................24
3.1.1. Number of Teeth........................................................................................................................25
3.1.2. Minimum Speed.........................................................................................................................25
3.1.3. Over-Speed Limit.......................................................................................................................25
3.1.4. Over-Speed Test Limit...............................................................................................................25
3.1.5. Over-Acceleration Limit .............................................................................................................26
3.1.6. Over-Speed Deadband ..............................................................................................................26
3.1.7. Over-Acceleration Deadband.....................................................................................................26
3.1.8. Speed Discrepancy Threshold...................................................................................................27
3.1.9. Acceleration Discrepancy Threshold .........................................................................................27
3.1.10. Discrepancy Duration Limit ........................................................................................................28
3.1.11. Acceleration Filter ......................................................................................................................28