The Control Module; The Cmx Control Module; Breaking Tabs; Contact Connections - Notifier AM2020 User Manual

The CMX Control Module is an addressable module that supervises and switches power to a Notification
Appliance Circuit (NAC). The CMX circuit can be wired as an NFPA Style Y or Style Z NAC. Alternately, the
CMX can be employed as a Form-C relay (refer to Figure 4.7-1). Refer to Figures 4.7-2 through 4.7-6 for CMX
wiring diagrams.
The CMX refers either to the CMX-1 or CMX-2 through the remainder of this document, unless otherwise noted.
SLC Loop (-)
SLC Loop (+)
Power (-)
Power (+)
CMX Control Module (NAC)
SLC Loop Connections
Connect the SLC Loop to CMX Terminals 1(-) and 2 (+). The CMX occupies one module address on the SLC
Loop. Set the rotary switches on the CMX to the particular SLC Loop address required (each CMX must have a
unique module address, 01-99).

Breaking Tabs

To configure a CMX as a Form-C relay, the two tabs must be broken off of the module. Use a pair of needle-nose
pliers to break off each tab.
The tabs must be broken before the connection of any power source to the Form-C terminals.

Contact Connections

Make connections to the common and the normally-open or normally-closed contacts on the CMX as needed.
(Refer to Figure 4.7-6 for a wiring diagram.)
1-70
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+
NAC (+)
Option Class A
- (Style Z) return
NAC (-)
-
NAC (-)
Output
-
NAC (+)
+
+
Alarm polarity
shown
NOTE
SLC Loop (-)
SLC Loop (+)
N.O. Contact
CMX Control Module (Form-C Relay)
WARNING!
Common
N.C. Contact
Break tabs
Installation 15088:J 10/22/99