Schweitzer Engineering Laboratories SEL-321 - Page 332

ii Appendices Date Code 20011203
SEL-321/321-1 Instruction Manual
APPENDIX I: INTERFACE BOARD SPECIFICATIONS........................ I-1
Introduction....................................................................................................................................I-1
Interface Board 1 (16 Outputs, 8 Inputs) - Screw Terminal or Plug-In Connections....................I-1
Optoisolated Inputs ................................................................................................................I-1
Output Contacts .....................................................................................................................I-2
Interface Board 2 (12 Outputs, 8 Inputs) - Screw-Terminal or Plug-In Connections....................I-5
Optoisolated Inputs ................................................................................................................I-5
Output Contacts .....................................................................................................................I-5
Interface Board 5 (8 Outputs, 8 Inputs) - Screw-Terminal............................................................I-9
Optoisolated Inputs ................................................................................................................I-9
Output Contacts .....................................................................................................................I-9
Interface Board 6 (12 Outputs, 8 Inputs) - Plug-In Connections .................................................I-12
Optoisolated Inputs ..............................................................................................................I-12
Output Contacts ...................................................................................................................I-12
TABLES
Table I.1: Interface Board Types ...............................................................................................................I-1
FIGURES
Figure B.1: SEL-321 Main Board Jumper, Connector, and Socket Locations....................................... B-1
Figure F.1: Scheme 1 Trip Decision Logic for Phase A .........................................................................F-1
Figure I.1: Interface Board 1 Output Contacts (Board Position 1) .........................................................I-2
Figure I.2: Interface Board 1 Output Contacts (Board Position 2) .........................................................I-2
Figure I.3: Interface Board 1 Output Contacts (Board Position 1) (Plug-In Connections).....................I-2
Figure I.4: Interface Board 1 Component Layout (Screw Terminal)......................................................I-3
Figure I.5: Interface Board 1 Component Layout (Plug-In Connectors).................................................I-4
Figure I.6: Interface Board 2 Output Contacts (Board Position 1) .........................................................I-5
Figure I.7: Interface Board 2 Output Contacts (Board Position 2) .........................................................I-5
Figure I.8: Interface Board 2 Output Contacts (Board Position 1) (Plug-In Connections).....................I-6
Figure I.9: Interface Board 2 Output Contacts (Board Position 2) (Plug-In Connections).....................I-6
Figure I.10: Interface Board 2 Component Layout (Screw Terminal)......................................................I-7
Figure I.11: Interface Board 2 Component Layout (Plug-In Connectors).................................................I-8
Figure I.12: Interface Board 5 Output Contacts (Board Position 1) .......................................................I-10
Figure I.13: Interface Board 5 Output Contacts (Board Position 2) .......................................................I-10
Figure I.14: Possible Connections for Fast High Current Interrupting Output Contacts (Circuit
Load Not Shown, Third Terminal Connection is Optional) .........................................I-10
Figure I.15: Interface Board 5 Component Layout (Screw Terminal)....................................................I-11
Figure I.16: Interface Board 6 Output Contacts (Board Position 1) (Plug-In Connections)...................I-12
Figure I.17: Interface Board 6 Output Contacts (Board Position 2) (Plug-In Connections)...................I-12
Figure I.18: Interface Board 6 Component Layout (Plug-In Connectors)...............................................I-13