General Information
February 2011 1-16 P/N 06-237041-001
1-13 OPTIONAL EXPANSION CARDS
The following cards (each described in further detail in Table 1-3) may be included in the FenwalNET
8000-ML system:
• Signal Line Circuit (SLC) Card
• Release/Notification Appliance Circuit (R-NAC) Card
•Relay Card
•City Tie Card
Note: Expansion cards have been designed to the same size: 3.5 in. (H) x 7.0 in. (W)
1-13.1 General Guidelines for the Use of Expansion Cards
There are some general guidelines to be aware of when incorporating Expansion Cards into the
FenwalNET 8000-ML system:
1. Cards can be plugged into any slot in the Expansion Card Cage. There are no reserved slots.
2. Removal of any card does not require removal of any other card or its wiring.
Note: Power should be off when removing or connecting PCBs and cabling.
3. Each Expansion Card is assigned a unique address.
4. An Expansion Card Cage contains a total of six Expansion Card slots.
5. A fully expanded FenwalNET 8000-ML system can include a total of four Expansion Card Cages.
6. A fully expanded FenwalNET 8000-ML system (24 available slots) can include the total number
of Expansion Cards listed below:
• 1 City Tie Card
• 6 SLC Cards
• Any combination of R-NAC and Relay Cards (maximum of 17)
7. All cards are supplied with +24 Vdc power from the backplane, with the following exceptions:
•R-NAC Card
•Relay Card
1-13.2 Expansion Card Slot Addresses
Note that each Expansion Card is assigned a unique address consisting of two components: The first
component identifies into which Backplane Assembly (out of four possibilities) that the card is
installed. The second component identifies into which slot (out of six possibilities) the card is
installed.
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