BIG ASS FANS BAFWorks 3.0, Руководство по установке

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BAFWORKS
®
INSTALLATION GUIDE
WWW.BIGASSSOLUTIONS.COM ©2013 DELTA T CORP. ALL RIGHTS RESERVED
36
Electrical Installation: Fans (cont.)
Fire alarm interface methods
The most common method for interfacing fans with a fire alarm system is to provide a dry relay contact to each fan. In this scenario, the
relay coil is controlled by the Fire Alarm Control Panel (FACP) or a Notification Appliance Circuit (NAC). On newer systems, the relay
is replaced by an addressable Alarm Release Module (ARM). In all of these scenarios, the fan sees a dry contact inserted across a run
enable input to the fan controller. When the fan is turned on, it will enter an External Fault Trip (EF Fault). This is considered a “fail safe”
scenario, especially when the FACP, NAC, or ARM relay coil remains energized at all times to enable fan operation. Any circuit power
failure or alarm condition will result in a fan shutdown, which will be reported on the BAFWorks
®
user interface. The typical circuit layout
is shown below.
R R R
1
2
ARM ARM ARM
FACP or NAC
panel output
V
SUPPLY
Fan Controller's ESFR
input terminals
Fan Controller's ESFR
input terminals
Fan Controller's ESFR
input terminals
Fan Controller's ESFR
input terminals
Fan Controller's ESFR
input terminals
Fan Controller's ESFR
input terminals
DATA
FACP
NC contact held open
for fan operation
NC contact held open
for fan operation
NC contact held open
for fan operation
NC contact held open
for fan operation
NC contact held open
for fan operation
NC contact held open
for fan operation
Supply
Common
The BAFWorks application and gateway provide an additional method of fire alarm system interface, which uses the run enable input
on only one of the fan controllers. The gateway monitors all enable inputs on all of the addressed and connected fan controllers, and
issues a shutdown command over the Modbus to the remaining controllers on the system if one of these inputs is reported as tripped.
The shutdown is also reported on the BAFWorks application. The gateway and application will not be able to see a fire alarm trip
on a 0–10 V daisy chained fan! This method may not comply with National Fire Protection Association (NFPA) Article 13 or other
codes pertaining to fire alarm installation. Consult all necessary parties and codes prior to implementation.
R
FACP or NAC
panel output
V
SUPPLY
NC contact held open
for fan operation
Controller's
ESFR input
terminals
Modbus
iPad
®
/Gateway/
Router Location
1
st
Gateway observes
the EF trip
2
nd
Gateway issues stop
command to remaining fans
Supply
Common