Download Automation System TROVIS 5100 Ventilation

Configuring the LON interface
6
LON communication (Co7, PA7, Co5 Fb03)
LON communication (Co7, PA7, Co5 Fb03)
The TROVIS 5177 Ventilation Controller can
be linked together with other controllers from
the TROVIS 5100 series in a specific
SAMSON LON network. In this way, two outdoor temperatures, the flow temperature for
externally required signal and the time can
be exchanged among the connected controllers. A special communication tool is not necessary. Just the LON communication must be
activated, an address allocated to each controller in the LON network as well as a definition about which controller sends which
6.1
value to the LON bus. It is possible to define
that a controller send all values or each different value is sent from a separate controller.
Data are transmitted every 4 minutes over
the LON bus, except when the temperature
values changes significantly (∆tA > 0.5 K;
∆tVL > 2 K) which are sent immediately. The
values from the LON bus remain valid in the
controllers for a maximum of 10 minutes
before error routines become active. If the
controller issuing the time fails, the time runs
on locally in all the other controllers.
Configuring the LON interface
1. Activate the function block Fb00 in Co7
to switch on LON communication.
2. Allocate a node address in PA7.
A subnet is automatically assigned to
each type of controller (e.g. 5174), see
table below. Assign each controller a
node address (1 to 20) in the parameter
level PA7, making sure a node address is
only assigned once within a subnet. But,
for example, it would be permissible to
assign the node address 9 for a TROVIS
5174 Controller as well as for a TROVIS
5179 Controller since they belong to different subnets.
Controller type
Subnet
Node address
5174
4
1 to 20
5177
7
1 to 20
5179
9
1 to 20
Primary
controller
1
1
You can optionally determine the following
functions in Co7:
You can define a controller to function as
the primary controller in a control system,
this is, however, not absolutely necessary.
The primary controller receives the request for the externally required signal
from all the other controllers and controls
the primary flow temperature correspondingly. Activate Co7 Fb01 in a controller
to turn it into the primary controller.
Activate Co7 Fb02 to send the time. This
function block, however, may only be set
in one controller to ensure all the controllers function with the same time. If the
time is sent over LON, all the other devices in a system automatically function
with this time.
Activate Co7 Fb03 to send the outdoor
temperature Lon1 and activate Co7 Fb04
for outdoor temperature Lon2. After activating these function blocks, the number
of the terminal to which the outdoor sen-
4
4
4
EB 5177 EN
79