2-16
QuickAlert Class A / Class B NAC Example. The following example,
shown in Figure 2-8, illustrates how to implement this application for a four-
story building that uses QuickAlert NAC appliances.
The first four equations monitor the state of each floor’s initiating devices. The
output side of each equation activates the appropriate list of NACs as required.
Important Note: Use HOLD ON for Class A QuickAlert devices; use HOLD
TEMPORAL for Class B QuickAlert devices.
The last equation monitors the state of P26, the Alarm Silence Activated pseudo
point. If this point is ON (i.e., following an Alarm Silence), the output executes,
issuing the HORN OFF command to silence all audible QuickAlert NAC
appliances. HORN OFF opcode is only required for Class B QuickAlert NAC
applications. This equation is not required for Class A QuickAlert NAC
applications. Important Note: You cannot associate a list containing NACs
with the Horn OFF command, you must associate specific NACs with the
command.
The last output statement at the bottom of the sample screen resets the P26
pseudo point to its OFF state. Note: Resetting P26 is very important.
Figure 2-8. Fire Floor, Floor Above, and Below with QuickAlert
NACs
Selective Signaling by Fire Floor, Floor Above, and Floor Below,
Continued
Step 7. Add Custom Control
Equations (continued)
Note: Use
HOLD
TEMPORAL
for Class B.
Use HOLD
ON for Class
A
Technical Manuals Online! - http://www.tech-man.com
To Next Page
Loading...
Need help?
General
