GE Grid Solutions
D25
User's Manual
GE Information
994-0081-3.00-21
131
Digital Input Cards
Digital Input S-
Cards
A D25 may be equipped with up to three S-Cards.
Cards may not be the same part numbers: the wetting voltage may be
different, so use care when replacing cards.
Field terminations for the digital inputs and external wetting power supply are
made through two 40-pin card edge connectors positioned on the back panel
of the D25.
!
Use Pullers
Always use the PCB pullers shipped with the D25 to remove and replace S
Cards.
S Card
Locations
Each S Card is connected to the WESDAC Board through a 2x16 pin DIN
connector:
DI Card #1
DI Card #2
DI Card #3
Removing the
S Card
1.
Use two PCB pullers to slide the S Card toward the front of the D25.
2.
Use firm but gentle pressure to disconnect the card.
Replacing the
S Card
1.
Position the S Card on the slide guide, and carefully push the card into the
D25 housing. Use the following table to determine the correct slot to
insert the card.
2.
Use firm but gentle pressure to push the card into place.
Table:
Positioning
S Cards
Use this table to determine the correct slot to insert the card.
Card
Inputs
Location
1
1 - 32
Second slot from the top of the D25
2
33 – 64
Third slot from the top of the D25
3
65 – 96
Fourth slot from the top of the D25
DI Card #3
DI Card #2
DI Card #1
Summary of Contents for D25
Page 170: ......
