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Phason Phason Communication Hub installation guide
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Phason Communication Hub installation guide
The Phason Communication Hub (model PCH) allows you to expand your OMNI-Select system.
The PCH connects to the RS485-FD Converter and has four communication channels to connect to
your Phason devices.
Features
Four RS485 communication channels
DC power adapter
Rugged NEMA 4X enclosure (corrosion resistant, water resistant, and fire retardant)
Limited warranty (90 days)
How the system works
The computer with OMNI Select and its modules sends commands to the devices and receives
information back from them. This is called communication. The RS485-FD and PCH are the “traffic
cops” of the system; they handle the communication between the computer and devices.
To devices
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Accessories and options
Outdoor Temperature Probe (model OUT-1)
The OUT-1 connects quickly and easily to the Phason Communication Hub and allows you to
monitor and display outdoor temperatures, as well as add additional functionality to OMNI Select
modules.
Wireless RF Adapter (model IWIRE-FLEX)
iWire Radios provide wireless RS485 communication with other iWire Radios and connected
Phason devices.
iWire Radios have an outdoor, line-of-sight range of up to 5 miles and an indoor range of up to 500
feet. iWire Flex includes an outdoor temperature terminal for connecting a temperature probe and
adding all the functionality of the OUT-1 described above.
You cannot have both an OUT-1 and IWIRE-FLEX because they connect to the
same location on the PCH.
Regulated Power Supply (model RPS)
The RPS is a CSA-approved, Class 2 power supply that 24 VAC and 13.6 VDC for general
applications. Its rugged design and battery backup option make it excellent for harsh environments.
Replacement kits
Main circuit board (model K325001)
RS485 modules (model RS485-MODULE)
What you need to know before installing the PCH
Precautions, guidelines, and warnings
Phason recommends using conduit to protect all communication and power cables.
Make sure the communication and sensor cables do not become pinched or bent.
Mount the unit on a sheltered, vertical surface with the knockouts facing down.
Use a screwdriver to tighten the screws in the enclosure. Do not use a drill or
over tighten the screws; this can crack the enclosure and ruin the watertight
seal.
Use the electrical knockouts for bringing wires or cables into or out of the
enclosures. Use conduit connectors for watertight strain reliefs at all cable-entry
points.
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Routing data wires
Routing data wires in the same conduit as, or beside AC power cables, can cause electrical
interference, erratic readings, and/or improper operation. Data wires include the following:
Data communication wires, including RS-232/RS-485
Any cable or wire that does not provide AC power
Guidelines for routing data wires
Do not run the wires in the same conduit as AC power cables.
Do not run the wires beside (within 12 inches) AC power cables or near electrical equipment.
When crossing other cables or power lines, cross them at a 90-degree angle.
If in doubt, do not run any wire or cable that is not an AC-power wire inside the same conduit or
beside other AC-power wires.
Installing the Communication Hub
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RS485 Modules: There is one RS485 Module for each wired communication channel. If one of the channels is not working, you
might need to replace the RS485 module. For more information, contact your dealer or Phason customer support.
Communication channel connectors: Connect the communication wiring for the channels to these connectors.
To PC connector: Connect the communication wiring for the RS485-FD to this connector.
Power LED: The LED should be on when the PCH has power.
DC adapter: Make sure the adapter is properly connected. Connect the other end to a 120 VAC outlet.
Optional power connector: If you are be using a Phason Regulated Power Supply (RPS) to power the Communication Hub,
connect it here. For more information, read Connecting the power below.
Add-on socket: If you have an OUT-1 temperature probe; connect it to the left-hand connector. If you have an iWire Flex, connect
it to both connectors.
Connecting the communications
Connect the communication wiring according to the instructions in the RS485-FD installation guide.
Wire function
RS485
PCH (To PC)
Channels 1 to 4
Acommunication
Ablue
Ablue
Ablue
Bcommunication
Bwhite/blue
Bwhite/blue
Bwhite/blue
Ccommunication
Corange
Corange
Corange
Dcommunication
Dwhite/orange
Dwhite/orange
Dwhite/orange
Ecommon reference
Egreen
Egreen
Egreen
The Communication Hub MUST be the first device after the RS485-FD. You cannot
install devices between the RS485 and the PCH or they will not communicate.
If you need more than four communication
channels, you can connect two Communication
Hubs together; connect one of the channels on
one hub, to the TO PC on the other.
Connecting the power
If you are using the supplied DC adapter for power, make sure it is connected inside the PCH.
Plug the other end into a 120 VAC outlet.
If you are using a Regulated Power Supply (RPS) for power, disconnect the DC adapter and then
connect the wiring to the POWER terminal according to the instructions in the Regulated Power
Supply installation guide.
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Phone: 204-233-1400
Fax: 204-233-3252
Phason Inc.
2 Terracon Place
Winnipeg, Manitoba, Canada
R2J 4G7
Web site: www.phason.ca
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