GE Industrial Solutions ASTAT-CD Plus Solid-State Starters - Manual (Page 26)

ASTAT-CD Plus Service Instructions
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Step 15. Reassemble the standoffs to the new Power
Supply Board. Reconnect the gate wires to
the Power Supply Board (terminals 1 to 12)
and reinstall the 4 screws which hold the
Power Supply Board to the black plastic
housing. Refer to (Figure 7) for gate lead
connections.
Step 16. Reassemble the Logic Board, cover and
terminal connectors using steps 7-10.
Figure 7. Gate lead connections
Y = yellow wire. B = blue wire.
SCR lead pairs are to be twisted to
reduce EMI (not shown in sketch).
To replace the Protection Board.
NOTE: POWER MUST BE REMOVED
BEFORE SERVICING.
Step 17. Remove the Cover, steps 1-3, and remove the
(Logic and Power Supply Board assembly) by
removing the 4 screws holding the Power
Supply Board to the black housing. If a
yellow/green wire is connected to the bottom
of the Power Supply Board, it must be
disconnected. Lower the Logic and Power
Supply Board assembly (Figure 8). Remove the
blue and yellow gate wires per steps 13 and 14.
6-point Terminal Board
Protection Board
6-wire connectors
Power Supply and
Logic Board Assembly
Figure 8. Board location
Step 18. Label the 6 push-on wire connectors with the
numbers printed on the P.C. Board (U1, V1,
W1, U2, V2, W2). Remove 6 push-on wire
connectors from the Protection Board
(Figure 9). Note the location of these
terminals for reassembly.
Mounting screw 6-point Terminal Board
Protection Board Wire connectors
Figure 9. Remove wire connectors