Installation
EST3 Installation and Service Manual 5.41
3-AADC1 Addressable Analog Driver Controller and IRC-3
When upgrading an IRC-3 system to EST3, the 3-AADC1
Addressable Analog Driver Controller module lets you use
existing IRC-3 system segments without rework.
The 3-AADC1 can be connected to an existing IRC-3 Remote
Zone Interface Module (RZB(V/N)12-6/3) or a Universal Input
Output Module (UIO-12).
The 3-AADC1 Addressable Analog Driver Controller module
provides one Class A or Class B loop. This loop becomes the
data communication line for the existing IRC-3 system.
The 3-AADC1 includes a line interface module (LIM) card. You
can also use the LIM card from an existing 3-AADC module by
installing it on a 3-AADC1-MB. The MB version is a local rail
module without a LIM card.
The audio features of the EST3 system can be connected to the
audio riser channels of the RZB module, or existing audio
equipment can be left in place.
Similarly, the EST3 system power supplies can provide 24 Vdc
power to the RZB or UIO cards, or existing power supplies can
be left in place.
Refer to the following installation sheets for wiring details:
• 3-AADC1 and 3-AADC1-MB Addressable Analog Driver
Controller Installation Sheet
• RZB(V/N)12-6/3 Remote Zone Interface Module Installation
Sheet
• UIO-12 Universal Input Output Module Installation Sheet
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