As Figure 3 shows, there are three basic types of addressable devices:
@ Addressable smoke detectors (ASDs), requiring only the MAPNET’” II wire pair for both data and power.
0 Interface adaptor modules (IAMs), requiring only the MAPNET‘” II wire pair for both data and power. IAMs
interface a single conventional device (i.e., a pull station or heat detector) to a CDT.
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Zone adaptor modules (ZAMs), requiring the MAPNET’” II wire pair for data, a pair- for power, and a pair
to connect the external zone wiring. A monitor ZAM interfaces a zone of conventional alarm-initiating
devices to the CDT. A control ZAM interfaces a single controlled device to the CDT. A signal ZAM
interfaces a zone of signal devices to the CDT (signal ZAMs may require a fourth wire pair for audio or
phone riser input).
Since addressable devices have unique locations, it is critical that each device’s address be properly set. The
address for each device on a MAPNET’” II must be set when you install the device. MAPNET’” II lines and
devices may be installed at any time during the 2120 installation; installation instructions are provided with each
device in the device’s shipping carton.
INSTALLATION GUIDE
The installation of any CDT will occur at the same time that you are installing other 2120 equipment. After studying
the information provided in this manual and in the 2120 Multiplex System Installation manual, you should be
able to accurately interpret all CDT cabinet drawings and the M-2120-CDT wiring diagrams.
Note: Just as transponder cabinet drawings refer you to M-2120 or M-2120-ET wiring diagrams for external
device connections, CDT cabinet drawings refer you to M-2120-CDT wiring diagrams. These wiring
diagrams:
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Tell you how the MAPNET’” II and power line (if required) are connected to addressable devices.
AND
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Tell you how conventional devices are connected to ZAMs.
We now need to spend some time discussing the actual installation of a CDT itself.
INSTALLATION PRECAUTIONS
A. Use twisted, shielded pair for all MAPNET’” II lines.
B. Each CDT equipment cabinet should be connected to building ground via a single, unbroken conductor
(12AWG wire, typical).
C. Ensure that cable shields do not ground when closing the cabinet. Use shrink tubing or high grade electrical
tape to cover bare shield.
D. MAKE
NO
CONNECTIONS TO CDTs WITH POWER APPLIED. This includes MAPNET’” II wiring.
E. Before applying power to CDT equipment:
s Verify that power connections have been terminated at the proper terminals.
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Verify that all wiring is free of grounds.
F. Apply power to equipment ONLY in the presence of a qualified Simplex Technical Representative (TR) and
in the following sequence:
0 Apply AC power first.
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Apply battery power last.
Reverse this sequence when you power down equipment.
G. NEVER APPLY OR DISCONNECT CDT EQUIPMENT POWER BY.USlNG AN INTERCONNECT PLUG.
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