62
CNT-SVX05A-EN
Application information
Standalone peer-to-peer
Tracer
™
AH.540 controllers allow peer-to-peer (also referred to as master/slave)
data communication. Data such as space temperature, setpoint, and occupancy
can be shared from a master control to a peer control with or without the
presence of Tracer Summit
™
.
Figure 10 —
Simple data sharing applicatio
n
Occupied/unoccupied
The controller’s occupancy generic binary input can be an occupancy input.
As an occupancy input, the standalone controller uses the binary input to switch
between occupied and unoccupied.
The
master
controller (the unit controller with the hardwired occupancy input)
in peer-to-peer communication can send its occupancy mode to one or more
slave
controllers (so they all track each other's occupancy mode). For these
applications, you must use Rover™service tool to set up the controller.
Refer to the Rover service tool product literature for more information.
Timed override
Peer-to-peer timed override requires at least two controllers. The first controller,
commonly referred to as the
master
, passes occupancy information to other
controllers, commonly referred to as
slaves
.
The master controller’s space temperature analog input generates timed
override On and Cancel requests in the following manner. The master controller
interprets a momentary short (0.4 to 5 seconds) on the space temperature input
as a timed override On request. During unoccupied mode, the On request
places the master controller in occupied bypass mode until the occupied timer
expires or until someone presses the zone sensor Cancel button. When the
master controller’s occupancy mode is communicated to one or more slave
controllers, the slave controllers echo the master’s occupancy mode, including
both On and Cancel requests.
The controller interprets a momentary fixed resistance (0.4 to 25 seconds) of
1.5K
Ω
by the space temperature input as a timed override Cancel request.
During occupied bypass mode, the controller uses a Cancel request to return
the controller to unoccupied mode.
Controller
Zone
Sensor
Comm5 Link
Controller
Controller
Slave
Slave
Master
