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D. Microprocessor Circuit Board
All of the power management, display and diagnostic
elements of the Gemini controller are integrated on a
single circuit board mounted within the controller
enclosure. The actuator power fuse, located in the
upper right hand corner of the circuit board is the
only replaceable component on the circuit board.
Two spare 30 amp green blade type fuses are
included inside the controller. Additional fuses are
available from the factory as Part No. 4102.
The microprocessor program is stored in an EPROM
memory chip that is pre-programmed at the factory.
The board is not field repairable and if it malfunctions
it must be exchanged with a new or rebuilt factory
unit.
How to remove the circuit board for replacement
or repair:
1. Disconnect 115 / 230 VAC power at the source
external to the control enclosure.
2. Disconnect DC power supply input.
3. Disconnect the battery leads from battery, then
from board.
4. Disconnect the signal inputs, and optional relay
board if installed, from the circuit board.
5. Disconnect actuator cables from board.
6. Remove the single screw holding the board to the
center pin holder. Gently pull the circuit board
down and it will pop out of the pin holders.
Reverse the above 6 steps to install the new board.
Be sure that the terminal posts and cable
connections are secure in the terminal connectors.
OPERATIONAL TEST – IMPORTANT!
Verify wiring is in accordance with steps D thru I
on pages 3,4 and 5 and that system passes test
in step J on page 5 before placing system in
service.
Gemini Main Circuit Board
WARNING
Substitution of other fuses may result in damage
to the control circuitry and/or actuator failure and
may void warranty.
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11.
Summary of Contents for Terminator
Page 16: ...For the Gemini Controller IX Typical Circuit Board Wiring 1 17 13 ...
Page 17: ...1 17 14 X Optional Relay Interface Module Circuit Board TB2 JS1 JS2 COM N O K2 K1 PIN 1 TB2 V ...
Page 19: ...1 17 16 XII Remote Input Circuit Wiring N O ...
Page 20: ...XIII Remote Input Circuit Wiring N C 1 17 17 ...
Page 21: ...1 17 18 XIV Actuator Cable Extension ...
Page 22: ...1 17 19 XV Emergency Shutoff Switch ...
Page 23: ...1 17 20 XVI Optional Auxiliary Valve Adapter ...
Page 28: ...7 17 Bulletin 800 06 ...