Chapter 1: Introduction
Figure 1-1 Redundancy Scheme
Expansion Boxes
The Expansion Boxes are supplied using the mains electrical supply. The Expansion Boxes communicate
with the system’s Main Controller via RS485 through low voltage (24Vdc) communication cables (Auto-
mation and Safety). Multiple Expansion Boxes can be used in one EDGE system. These Expansion
Boxes are designed to accommodate various electronic cards (Expansion Plug-in Modules), each
designed for different monitoring/control applications. Two different Expansion Boxes are available: 6-
Slot Expansion Box and 3-Slot Expansion Box. These two Expansion Boxes are very similar in construc-
tion and differ only in terms of enclosure size, number of electronic card modules they can accommodate
(6 Expansion Plug-in Modules for the 6-Slot, 3 Expansion Plug-in Modules for the 3-Slot).
Furthermore, both Expansion Boxes can accommodate up to 4 Solid State Relay modules (EDGE Varia-
ble Outputs) mounted on a heat sink in the back of the Expansion Box enclosure.
Items Description
6–Slot Expansion Box Consists of inputs and outputs. This enclosure can contain up to 6 plug-in modules
3-Slot Expansion Box Consists of inputs and outputs. This enclosure can contain up to 3 plug-in modules
6
890–00687 EDGE 2
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