General Alarm Service - Johnson Controls AIM-200 Technical Manual

General Alarm
Service
M510CJ modules will be activated under a general alarm condition
provided that the module address is set to "59" or below and the module is
not mapped to any zone. In addition, the alarm bus cable must be
connected between the CPU and the AIM -200 (see Figure 6). This
connection puts the normally open contacts of the CPU Alarm Relay across
the pin connector on the AIM -200. When an alarm occurs, the alarm relay
changes state, closing the connection to the AIM -200 and signaling a
general alarm condition.
Note: The CPU alarm relay is dedicated to this function and should not be
connected to other circuits.
To ensure that general alarm functions properly, adhere to the following:
1. The CPU default program automatically maps the Form -C alarm relay
to all initiating zones in the system. While this is a default map, the
AIM-200 programmer should ensure that this relay is indeed mapped
to all initiating circuits, including the eight zones on each AIM
This guarantees that any alarm in the system will activate the alarm
relay, which will in turn signal a general alarm throughout all
AIM-200s on the alarm bus connection.
2. The alarm relay must be programmed as a non -coded point. If it is
not, the alarm relay contacts will pulse general alarm bus connection,
causing the AIM -200(s) to oscillate in and out of alarm.
3. The CPU alarm relay must be programmed as silenceable, permitting
the silencing of general alarm modules with software type
(see Figure 39).
Figure 39: Alarm Bus Activity
Addressable Intelligent Module—AIM -200 Addressable Intelligent Module
-200.
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