Orion System VCM-X E-BUS Component - Manual (Page 7)

VCM-X Component & System Wiring
Systems Overview
7
Networked Multiple Loop
The Networked Multiple Loop System consists of two or more loops,
each being called a “Local Loop”, with one “Network Loop” that
ties the “Local Loops” together. Each of these loops can consist of
one of the following groups of controllers:
1. A series of VCM-X E-BUS Controllers.
2. A single VCM-X E-BUS Controller and a series of VAV/
Zone Controllers. These VAV/Zone Controllers can
either be of the Modular type or Non-modular type.
The Modular type use Power/Comm Boards and
prefabricated cables and the Non-Modular type utilize
terminals and 2 conductor twisted pair with shield wire.
A network device is used to share information which is
broadcast back and forth between all controllers on the
loop.
To form the Networked Multiple Loop System, the following network
devices are required:
1. A MiniLink Polling Device is required per loop
(Local Loop). This allows the controllers to share
information that is broadcast from one controller to all
controllers on that local loop.
2. One CommLink 5 is required for the entire system.
It resides on the Network Loop and allows for
communications between all the local loops and
provides for global broadcasts to all controllers on the
entire system.
Programming and status monitoring are accomplished by one or
more of the following methods:
1. By using an operator interface. This can be a Modular
System Manager, a System Manager TS II, a Modular
Service Tool, or all 3 devices. The Modular System
Manager, System Manager TS II, or Modular Service
Tool connect to any “Local Loop” on the system.
2. A computer interface can also be used in conjunction
with the other operator interfaces listed above, or by
itself. This requires a personal computer with the Prism
II computer front end software installed connected to
the CommLink 5.
Network Communications Devices
MiniLink Polling Device
The MiniLink Polling device is used in the following applications:
1. This device is required on all Zoning applications. It is
optional on single loop VAV systems.
2. This device is required on each local loop of all
Networked Multiple Loop systems.
3. This device is responsible for local loop broadcasts only.
It always resides on the local loop.
For a Networked Single Loop VCM-X E-BUS system, this device
can be used for tenant logging and alarm reporting to a Modular Sys-
tem Manager or System Manager TS II. It can be used to broadcast
information such as outside air temperature or outside air humidity
to all devices on the local loop. It can also be used to broadcast space
temperature from a GPC-X or GPC-XP Controller to any controllers
on this loop that do not have their own Space Temperature Sensor.
For a Networked Single Loop VAV system, the MiniLink Polling
Device can be used for tenant logging and alarm reporting to a
Modular System Manager or System Manager TS II. It must be used
to broadcast information such as, internal schedule, supply air tem-
perature, fan and heat status, unoccupied calls for heating and cooling
from the VAV/Zone Controllers, and forced modes of operation.
For a Networked Single Loop Zoning system, this device must be
used for zone voting, because it calculates the heating and cooling
totals on the loop and broadcasts cooling, venting, and heating
modes to the VCM-X E-BUS Controller. It can also be used for
tenant logging and alarm reporting to the Modular System Manager
or System Manager TS II.
CommLink 5
The CommLink 5 device is used in the following applications.
1. A CommLink 5 is required on all Networked Multiple
Loop
Systems.
2. A CommLink 5 is optional on all Networked Single
Loop
Systems.
3. A CommLink 5 is required on any system when a
permanent computer interface is desired. The USB-Link
2 can be used for temporary computer connection for
setting up or servicing the system, but does not have the
complete functionality that the CommLink 5 provides.
The CommLink 5 is responsible for local loop broadcasts on a Net-
worked Single Loop system, and on this type of system, the Loop
switch on the back of the CommLink must be set to “Single.” This
device is responsible for network broadcasts on Networked Multiple
Loop systems. On this type of system, the Loop switch on the back
of the CommLink must be set to “Multiple.”
For a Networked Single Loop VCM-X E-BUS system, this device
can be used for tenant logging and alarm reporting to a Modular
System Manager or System Manager TS II. It can also be used to
broadcast information like outside air temperature or outside air hu-
midity to all local loops on the entire networked system. It may also
be used to broadcast space temperature from a GPC-X or GPC-XP
Controller to any controllers on the local loop that do not contain
their own Space Temperature Sensor.
On a Networked Single Loop VAV/Zone system, the CommLink
5 can be used to broadcast information such as internal schedule,
supply air temperature, fan and heat status, unoccupied calls for
heating and cooling, and forced modes of operation to and from the
VAV/Zone Controllers.
Communication Devices