
STA SERIES AC CONTROLS
990-351
E-1
APPENDIX E
CASCADE BOARD OPTION
Description
The Cascade Board gives the Control the ability
to operate up to four SCRs instead of just one.
The STA-600 and STA-800 use two Cascade
Boards in order to operate up to six and eight
SCRs respectively.
Cascade Board
Maintenance/Replacement
1
Disconnect the 26-pin ribbon cable connector from the AC Timer Main Board connected to J2.
2
Disconnect the 8-wire cable connector from each of the SCR Driver Boards connected to J4
(SCR1) through J7 (SCR4) as required.
3
Disconnect the 2-wire power connector from J8.
4
Slide the card out of the card cage.
5
Install or re-install the circuit board by
sliding it into the card cage.
6
Reconnect the 26-pin ribbon cable
connector from the AC Timer Main
Board to J2
7
Reconnect the 8-wire cable connectors
from each of the SCR Driver Boards to
J4 through J7 as required.
8
Reconnect the 2-wire power connector
to J8.
9
Slide the board into the card cage.
Cascade Board Connector Locations
J2
J8
J3
J4
J5
J6
J7
SCR4
SCR
3
SCR2
SCR1
Содержание Miyachi Unitek STA-100A
Страница 1: ...990 351 Rev H AC WELDER STA SERIES OPERATION MANUAL...
Страница 18: ...CHAPTER 1 DESCRIPTION STA SERIES AC CONTROLS 1 4 990 351 STA 100A Series Major Components Typical...
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Страница 68: ...CHAPTER 5 MAINTENANCE STA SERIES AC CONTROLS 5 4 990 351...
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Страница 82: ...APPENDIX A TECHNICAL SPECIFICATIONS STA SERIES AC CONTROLS A 4 990 351 STA 200A AC Control Control...
Страница 86: ...APPENDIX B ELECTRICAL AND DATA CONNECTIONS STA SERIES AC CONTROLS B 4 990 351 Input Output Control Signals...
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Страница 96: ...APPENDIX D SYSTEM TIMING STA SERIES AC CONTROLS D 2 990 351 Continuous Seam Weld...
Страница 98: ...APPENDIX D SYSTEM TIMING STA SERIES AC CONTROLS D 4 990 351 Spot Welding...
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