Veris VWG-40 Installation Instructions

VWG-40

Viconics Wireless Gateway

Hardware Installation Guide

(Issue Date September 24, 2008 – 028-0179 R8)

Product overview

The VWG-40 and related wireless thermostats are targeted to retrofit applications where the
addition of communicating field bus wiring within the building space is prohibitive. The
Gateway and Communicating Thermostats with wireless field bus encourages the use of
existing wiring utilized by existing electronic thermostat type controls.

The VWG-40 when utilized in conjunction with the VT7xxxXxxxxW series wireless thermostats will offer the integrator
simple BACnet IP or BACnet MS/TP objects to integrate over standard building automation systems using familiar
integration toolsets.

A maximum of 30 wireless thermostats can be wirelessly attached to a single VWG
The following additional documentation is available on www.viconics.com

• Gateway BACnet integration guide (VWG-40-IP & VWG-40-MSTP), is available in document ITG-VWG-40-BAC-E xx

• Information on design consideration of wireless mesh networ ks and VWG set-up / diagnostics is available in document LIT-

VWG-40-SETUP-Exx

Part available

Part number Description

VWG-40-IP-1000 Viconics BACnet over IP wireless gateway. Includes:

- Supports up to 30 wireless thermostats

- Factory mounted wireless adapter

- 24 Vac panel mounted power supply

- Gateway mounted antenna

VWG-40-MSTP-1000 Viconics BACnet RS485 MS-TP wireless gateway. Includes:

- Supports up to 30 wireless thermostats

- Factory mounted wireless adapter

- 24 Vac panel mounted power supply

- Gateway mounted antenna

VWG-40-LON-1000

(Upcoming)

Viconics LON wireless gateway. Includes:

- Supports up to 30 wireless thermostats

- Factory mounted wireless adapter

- 24 Vac panel mounted power supply

- Gateway mounted antenna

VWG-APP

Interface software for VWG configuration and set-up. Operates under Windows XP ™.
Uses a LAN crossover IP connection for initial set-up.

VWG-RA

Remote antenna for gateway when the gateway is installed inside a metal cabinet or

when remote antennal mounting is required by physical installation
VWG-WA Replacement antenna for gateway mounted antenna setup
VWG-PS-DC 24 Vac to 15 Vdc panel mounted power supply for VWG
VWG-PS-AC 120 Vac to 15 Vdc power supply for VWG with cord
VWG-BB Replacement battery backup pack for the VWG

Trademarks

Niagara, Niagara AX is a registered trademark of Tridium, Inc.
LON, LonWorks and LonTalk are registered trademarks of Echelon Corporation
BACnet is a registered trademark of ASHRAE

1

Disclaimers

NO WARRANTY. Viconics, Inc. ( herein after referred to as “Viconics” ) makes no warranty as to the accuracy of or
use of this technical documentation. Any use of the technical documentation or the information contained therein is
solely at the risk of the user.

Documentation may include technical or other inaccuracies or typographical errors. Viconics reserves the right to make
changes to this document without prior notice, and the reader should in all cases consult Viconics to determine
whether any such changes have been made. The information in this publication does not represent a commitment on
the part of Viconics.
Viconics shall not be liable for incidental or consequential damages resulting from the furnishing, performance, or use
of this material.

This guide contains links and references to third-party websites that are not under the control of Viconics, and Viconics
is not responsible for the content of any reference material or linked websites. If you access a third party website
mentioned in this guide, then you do so at your own risk. Viconics provides these links only as a convenience, and the
inclusion of the link does not imply that Viconics endorses or accepts any responsibility for the content on those third­party sites.

Electronic controls are static sensitive devices. Discharge yourself properly before manipulation and installing the
Viconics wireless gateway.

All Viconics wireless gateways and related wireless thermostats are to be used only as operating controls. Whenever a
control failure could lead to personal injury and/or loss of property, it becomes the responsibility of the user to add
safety devices and/or alarm system to protect against such catastrophic failures.

All VT7000 series wireless thermostats and associated VWG (Viconics Wireless Gateway) have been rigorously tested
to ensure reliable operation in most building applications using the latest 2.4 ZigBee technologies. Viconics cannot
guarantee against potential network interference should additional wireless systems be deployed sharing close
proximity.

Best practices covered in this manual and all related Viconics VWG documents should be considered as a guide to
apply Viconics Wireless Network devices only. The instructions included in this manual are based upon Viconics in
house testing and should be referred to as a guide only.

Viconics Inc. may not be held liable for continued reliable, or robust operation of any and all wireless based devices.
Although Viconics has taken many precautions in assuring the robustness of the VT7000 series wireless thermostat
product line and associated network access point (VWG-40-XXXX-1000) Please note; future application of additional
wireless devices utilizing the same or similar channels and / or frequencies may degrade performance of overall
system and / or reliability.

Non-approved modifications or changes made to the VWG or wireless thermostats may void the FCC compliance of
the VWG and wireless thermostats.

Ferrites supplied with the power supply and VWG MUST be installed according to instructions. Failure to do so may
void the FCC compliance of the VWG and wireless thermostats.

Only VWG-PS-DC and VWG-PS-AC power supply can be used with the VWG. The usage of another non -approved
power supply may void the FCC compliance of the VWG and wireless thermostats.

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING
TWO CONDITIONS: (1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE
MUST ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED
OPERATION.

2

Overview

This document covers the mounting and wiring of the Viconics VWG-40 series product. It assumes that you are an
engineer, technician, or service person who is performing control system installation. Instructions in this document
apply to the following products:

Models Description

VWG-40-IP-1000 Viconics BACnet over IP wireless gateway.
VWG-40-MSTP-1000 Viconics BACnet RS485 MS-TP wireless gateway.
VWG-40-LON-1000 Viconics LON wireless gateway. (Upcoming)

• Note Not covered in this document is the configuration appliance software required for fully setup the
gateway . This includes setting host IP address, passwords, database, and other ther mostat and network utilities.
Refer to the document LIT-VWG-40-SETUP-Exx for more information.

Table of contents

These are the main topics included in this document:

• Preparation

• Precautions

• Mounting

• Board Layout

• About Expansion Options

• Wiring Details

• Power Up and Initial Checkout

Also included in this document are several appendixes, as follows:

• Using Status LEDs

• Maintaining the VWG

• Replacement and accessory

• Certifications

• Declaration of Conformity

Information and specifications published here are current as of the date of publication of this document. Viconics, Inc.
reserves the right to change or modify speci fications without prior notice. One or more U.S. or foreign patents may
cover products or features contained herein.

Preparation

Unpack the VWG and power module (either VWG-PS-DC or VWG-PS-AC) and inspect the contents of the packages for
damaged or missing components. Be sure the factory-installed ferrite is on the cord of the power supply unit. If damaged,
notify the appropriate carrier at once and return any damaged components for immediate repair or replacement.

Included in this Package

Included in this package you should find the following items:

• VWG-40-XX-1000 base controller.

• Local antenna for the VWG

• This VWG-40-XX-1000 Hardware installation guide

• Configuration tool on a mini-CD

• Power module required for operation, are ordered and sold separately. The power module can be one of the

following:
– VWG-PS-DC: 24Vac in-line (DIN-mount capable), or
– VWG-PS-AC: External 120 Vac wall-mount power adapter

3

f

Material and Tools Required

The following tools and supplies may be required for installation:

• DIN rail, type NS35/7.5 (35mm x 7.5mm), recommended for panel mount installation. Length of DIN rail should be
minimum 6.5 “ ( 165 mm ).

• If using an VWG-PS-DC power supply, use UL listed, Class 2, 24Vac transformer, supplying a minimum of 5VA to
the VWG. Note that the VWG-PS-DC power supply provides isolation — a dedicated transformer is not required.

• Suitable screws and screwdriver for mounting DIN rail, or if DIN rail not used, for mounting bases of VWG
controller and VWG-PS-DC power supply (if used).

Precautions

This document uses the following warning and caution conventions:

Cautions remind the reader to be c areful. They alert readers to situations where the re is a chance that the reader might
perform an action that cannot be undone, might receive unexpected results, or might lose data. Cautions contain an
explanation of why the action is potentially problematic.

Warnings alert the reader to proceed with extreme care. They alert readers to situations where there is a cha nce that the
reader might do something that can result in personal injur y or equipment damage. Warnings contain an explanation o
why the action is potentially dangerous.

Safety Precautions

The following items are warnings of a general nature relating to the installation and start-up of the VWG
controller. Be sure to heed these warnings to prevent personal injury or equipment dama ge.

• Depending on power module used, the circuit powering the VWG is 24Vac at 50/60 Hz (if using the VWG-PS-DC power

supply or 120 Vac at 50/60 Hz (if using the VWG-PS-AC power supply). Disconnect power before installation or servicing to
prevent electrical shock or equipment damage.

• Make all connections in accordance with national and local electrical codes. Use copper conductor s o nl y.

• To reduce the risk of fire or electrical shock, install in a controlled environment relatively free of contam i n an ts .

• This device is only intended for use as a moni toring and cont rol device . To p revent d ata loss o r equipm ent dam age, do

not use it for any other pu rpose.

• All Viconics wireless gateways and related wireless thermostats are to be used only as operating controls. Whenever a control

failure could lead to personal injury and/or loss of property, it becomes the responsibility of the user to add safety devices
and/or alarm system to protect against such catastrophic failures.

Static Discharge Precautio ns

Static charges produce voltages high enough to damage electronic components. The microprocessors and
associated circuitry within a VWG controller are sensitive to static discharge. Follow these precautions when
installing, servicing, or operating the system:

• Work in a static-free area.

• Discharge any static electricity you may have accumulated . Discharge static ele ctricity by touching a k nown,

securely grounded object.

• Do not handle the printed circuit board (PCB) without proper protection against static discharge. Use a wrist strap when

handling PCBs. The wrist strap clamp must be secured to earth ground.

4

Mounting

Mount the VWG in a location that allows clearance for wiring, servicing, and antenna removal.

Environmental Requirements

Note the following requirements for the VWG mounting location:

• This product is intende d for indo or use onl y. Do not expose th e unit to ambient c onditio ns outsid e of the range of
0ºC (32

º

F) to 50ºC (122º F) and relative humidity outside the range 5% to 95% non-condensing (pollution degree 1).

• If mounting inside an enclosure, that enclosure should be designed to keep the unit within its required operating
range considering a 20-watt dissipation by the controller. This is especially important if the contro ller is m ounted
inside an enclosure with other heat producing equipment.

• Do not mount the unit:

– In an area where excessive moisture, corrosive fumes, or explosive vapors are present.
– Where vibration or shock is likely to occur.
– In a location subject to electrical noise. This includes the proximity of large electrical contractors,

electrical machinery, welding equipment, and spark igniters.

Physical Mounting

The following information applies about physically mounting the unit.

• You can mount the VWG in any orientation. It is not necessary to remove the cover before mounting.

• Mounting on a 35mm wide DIN rail is recommended. The VWG unit base has a molded DIN rail slot and locking

clip, as does the VWG-PS-DS 24Vac power supply module.

• If DIN rail mounting is impractical, you can use screws in mounting tabs on the VWG

The following procedure provides step-by-step DIN rail mounting instructions for the VWG. Mount the VWG prior to
mounting any accessory items.

Procedure 1 - To mount on DIN rail

Step 1 Securely install the DIN rail using at least two screws, near both ends of the rail.
Step 2 Position the VWG on the rail, tilting to hook DIN rail tabs over one edge of the DIN rail
Step 3 Pull out the DIN rail clip and push down and in to force the DIN rail clip to snap over the other edge of th e D I N

rail.

Step 4 To prevent the VWG from sliding on the DIN rail, secure with clips provided by the DIN rail vendor, or p lace a

screw in one of the four mounting tabs in the base of the VWG.

Step 5 If VWG-PS-DC 24 Vac power supply is used, mount onto the DIN rail in the same manner.

5

Removing and Replacing the Cover

You must remove the VWG cover to connect the battery (new unit) or to replace the battery. The c over sna ps onto the
base with four plastic tabs (two on each end).

To remove the cover, press in the four tabs on both ends of the unit, and lift the cover off. If accessory modules are
plugged into the VWG, you may need to slide them away from the unit to get to the cover tabs. To replace the cover,
orient it so the cutout area for communication ports is correct, then push inwards to snap in place.

Installation Minimum Spacing Distance Requirements

Make sure minimum spacing distance requirements is available to freely rotate wireless antenna in all possible
orientations.

6

r

,

p

,

r

Board Layout

Figure below shows the location of LEDs, connections and other features of the VWG with the cover removed.

Net2

status

LED

Net1

status

LED

BEAT
status

LED

SYS

status

LED

Location of serial numbe

Battery

connecto

Ethernet IP connection

RJ-45

Net2

Ethernet IP connection

Coaxial power

connector for wall

mounted

Net1

RJ-45

ower module

Antenna

connector

Earth ground spade

lug connector

VWG wireless card

Com status LED

VWG wireless card

reset button

MS-TP RS-485

connection, COM2

Wiring Details

See figure above to locate connectors and other components on the VWG controller. Make
connections to the VWG in the following order.

1. Connect earth-grou nding wire with spade connector from the earth ground lug on the VWG. See “Groundi ng” for
details.

2. Prepare power wiring (lea ve the unit powered off). See “Power Wiring” for details.

3. Connect communications wiring. See “Communications Wiring,” page 14 for ports available on the VWG base unit.
For ports on any installed option board (LON, RS-485, modem) see the specific mounting and wi ring gu ide fo r any
additional details.

4. Connect the backup battery to the VWG battery connector, and apply power to the unit. See “Power Up and Initial
Checkout,” page 17.

Grounding

Use an earth ground spade lug (0.187") on the base of the VWG for connection to earth ground. For maximum
protection from electrostatic discharge or other forms of EMI, you should connect this to earth ground using a #16 AWG
or larger wire. Keep this wire as short as possible.

If desired, you can use the wall mount VWG-PS-AC 120 Vac power supply in your office ( when initially commissioning
the VWG ), and then install the panel mount 24 Vac VWG-PS-DC power supply at the job. The following sections provide
more details:

• VWG-PS-AC ( 120 Vac Wall mounted power supply module )

• VWG-PS-DC ( Panel mount 24Vac-power supply module )

7

VWG-PS-AC 120 Vac Wall mounted power supply module
Both the U.S. and International models of wall power modules are self-contained switching power supplies designed to

plug into a standard building power receptacle of appropriate voltage. To supply power to the VWG, you then simp ly plug
the coaxial connector from the VWG-PS-AC into the coaxial power connector on the VWG base board.

VWG-PS-DC Panel mount 24Vac-power supply module
Using the VWG-PS-DC module lets you power the VWG from a standard Class 2 24Vac transformer. The VWG-PS-

DC module provides power isolation (it makes no difference if the transformer output is “floating” or has one side tied to
ground). Therefore, you can use an existing nearby transformer, providing that it has 5 VA capacity available to power
the VWG.

Power Wiring

Only VWG-PS-DC and VWG-PS-AC power supply with factory installed ferrite
on the power cord can be used with the VWG. The usage of another non­approved power supply may void the FCC compliance of the VWG and wireless
thermostats.

Connect power cord as showed into coaxial connector.

Do not plug the coaxial conne ctor fr om th e powe r sup ply into the
VWG until all other mounting and wiring is completed. See “Power
Up and Initial Checkout,” section.

Communications Wiring

Connect communications wiring to the VWG using either Net1, Net2 or the RS-485 connection based on VWG model
used and configuration.

Note Prior to connecting cables, provide strain relief for them to prevent damage to the controller.

Ethernet—BACnet over IP wiring

Two, female 10/100-Mbit Ethernet connections are provided on the VWG. These are RJ-45 connectors labeled NET2 and
NET1. Use a standard Ethernet patch cable for connecting to a hub or Ethernet switch. An activity LED for each Ethernet
port is visible and labeled “NET2” and “NET 1” on the cover.

Note Typically, you only use NET1 (primary port), unless you have a specific application for isolating a driver’s

network traffic to a separate IP address (and LAN) using NET2. In all cases, port selection can be changed
and is dependent of configuration made using the VWG configuration tool.

The packing slip accompanying the VWG will provide the “factory-shipped” IP settings for both NET1 and NE T 2. Refer
to the document LIT-VWG-40-SETUP-Exx for more information for details on the default IP address and how to
change it. ( VWG-40-IP only )

The supplied ferrite in the VWG packaging needs to be installed on the IP wire in a specific way for FCC
compliance. Place IP wire into the provided ferrite as shown in diagram below. Make sure to follow the placement
dimension. Close and snap the ferrite casing as shown.

Wire IP cable into NET1 or NET2 as per co nfiguration.

8

RS485—BACnet MS-TP wiring.

An RS485, o ptically isolated port uses a 3-position, screw terminal connector and always operates as CO M2. Wire to
this connector with shielded 8-22 AWG wiring (refer to the TIA/EIA-485 standard). The screw terminals (from left-to­right) are shield, plus (+), and minus (–).( VWG-40-MSTP only )

The supplied ferrite in the VWG packaging needs to be installed on the MS-TP wire in a s pecific way for FCC
compliance. Place MS-TP wire into the provided ferrite as shown in diagram below. Make sure to follow the
placement dimension. Close and snap the ferrite casing as shown.

Wi r e M S - T P c a b l e i n t o MS-TP RS-485 connector.

Antenna installation

Controller mounted antenna ( VWG-WA )

All VWG-40 are supplied with a controller-mounted antenna. Th e an tenna is shipped loose in the
controller main packaging box.

This installation type is to be used only when the controller ( and antenna ) is not installed inside
a closed metal enclosure and that clear reception is expected.

Gently screw the antenna into the antenna connector at the top of the VWG. Do not over tight the
antenna.

Remote mounted antenna ( VWG-RA )

If a remote mounted antenna is required because of the location of the VWG, a separate antenna
can be ordered. Part number VWG-RA

This installation type can typically be used when the controller is installed inside a closed metal
enclosure.

Gently screw the female connection of the remote antenna into the VWG. Remote antenna has a
weighted magnetic base for metal surface mounting. Wire length is 1.5 M ( 4.9 Ft )

Power Up and Initial Checkout

Procedure - Initial power up and checkout

1. Connect the Backup Battery.

2. Apply Power.

3. Check the Status LEDs.

1) Connect the Backup Battery

With the cover removed from the VWG (see “Removing and Replacing the Cover,”), locate the red and black wires
coming from the backup battery, with 2-position connector plug. Plug the connector into the battery c onnector on the
bottom board (below option slot 2 area). The connector is keyed—you cannot insert it incorrectly. The red (positive)
connection should be the furthest from the two 30-pin option modules connectors.

For more details on the backup battery, see “About the Battery”.

9

2) Apply Power

Apply power to the VWG by plugging in the power plug into either the VWG (if w all mount AC adapter VWG-PS ­AC) or the 24Vac-powered VWG-PS-DC module.

3) Check the Status LEDs
When power is applied, the green LED labeled “SYS” will light. This is a green LED. Once the VWG boots, the yellow
“BEAT” (heartbeat) LED will begin blinking, with a typical rate of about 1 Hz. Boot time should begin within 30 seconds

after power is applied.
The blink pattern of the heartbeat LED under normal operation will differ for each installation (depending on station

activity). But, in general, the LED should blink about once per second. The rate will be slower when the con tr o l engine is
executing the station database, and as more objects / wireless thermostats are added.

After applying power, if the heartbeat LED comes on (steady) and stays lit longer than two minutes, contact t ech nical
support for assistance. See also the “Using Status LEDs” section.

About the Battery

The VWG is provided with a custom 10-cell NiMH battery pack mounted to the unit (under the cover). This battery
allows the VWG to continue operation through very short power bumps (a few seconds in duration). If a longer power
outage occurs, the battery provides enough run time for the VWG to backup data and then shutdown. Typically, this is
one minute. Shutdown occurs automatically, after data is backed up to on-board flash memory.

The battery is trickle-charged by the VWG during normal operation. Following an extended power outage, the batte ry is
charged at a faster rate. The power and battery circuitry is monitored by the VWG. The battery should be replaced
approximately every three years, or more often if the unit is in a high temperature environment.

Note A NiMH battery characteristic is to lose charge if not left in charge mode (trickle charge). Leaving the battery

unconnected, or in the unit powered off will cause the battery to fully discharge in a matter of weeks. Note that
in the case of a new VWG, it ships from the factory with a completely discharged battery. Therefore, allow at
least 18 hours for the battery to charge if it has not been in a powered unit.

For more information on the use and replacement of the battery, refer to the “Required Battery Maintenance” section.

Related Documentation

For more information on configuring and using the VWG controller, consult the following docu ments available from th e
VWG section at www.viconics.com:

• Gateway BACnet integration guide (VWG-40-BIP & VWG-40-MSTP), is available in document ITG-VWG-40-BAC-E xx

• Information on design consideration of wireless mesh networ ks and VWG set-up / diagnostics is available in document LIT-

VWG-40-SETUP-Exx

10

Using Status LEDs
The VWG controller includes several LEDs that can help determine the status of the unit. They are located in two

places: the top of the controller (visible through the cover), and for serial ports, on the bottom board (only w ith cover
removed). From left-to-right these LEDs include:

• Ethernet Ports

• Heartbeat

• System

• Wireless card communication status

Ethernet Ports

Each Ethernet port (“NET2”, “NET 1”) has one green LED, visible on the top cover. A “NE Tx” LED indicates activity on
that port as follows:

• Off—No Ethernet link is made

• On—Ethernet link is present, but no activity on the LAN

• Blinking—Ethernet link is present with data activity on the LAN.

Beat

The “BEAT” LED is located to the right of the Ethernet status LEDs, and is yellow. Under normal operation, this LED
should blink about once per second. Blink patterns differ as station activity varies, but any pulse rate from once per
second to 10 blinks per minute usually indicates normal operation. If the heartbeat LED stays on constantly, does not
light, or blinks very fast (more than once per second), contact System Engineering for technica l support.

System

The “SYS” LED is located to the right of the heartbeat (“BEAT”) LED, and is green. This LED provides a CPU machine
status check, and should remain lit whenever the VWG is powered. If the SYS LED does not light while power is applied,
contact technical support for assistance.

Wireless card co mmunicatio n status

The Wireless card communication status is located right beside the wireless antenna connection on the VWG. This LED
provides a simple diagnostic status of the Viconics wireless network.

1 x 200ms short blink Power on
2 x 200ms short blinks Power on and card memory initialized properly
3 x 200ms short blinks Power on, card memory initialized properly and serial communication with VWG main board active
4 x 200ms short blinks Power on, card memory initialized properly, serial communication with VWG main board active and wireless

4 x 200ms short blinks and
1 x 1500ms long blink

networks started successfully
Power on, card memory initialized properly, serial communication with VWG main board active, wireless
networks started successfully and wireless communication with thermostats active

Maintaining the VWG
This section provides information on the following topics:

1. Cleaning

2. Required Battery Maintenance

3. Replacement Parts

4. Replacing the VWG base a ssembly

5. Returning a Defective Unit

1) Cleaning

If dust or metal filings are present inside the unit, clean with vacuum or compressed air. Otherwise, no cleaning inside the
unit is required. Optionally, if the cover becomes dirty, you can wipe it with a damp cloth and mild detergent.

11

2) Required Battery Maintenance

Battery life expectancy is a function of its discharge cycles (the number of discharges and their depth) and the ambient
temperature of the battery during normal operation. In most applications, the battery should see relatively few
discharges. Therefore , ambient temper ature has more to do with determining the life expect ancy of the battery than does
any other factor. If the VWG is installed in a conditioned space, the battery should provide dependable service for
approximately three years (average). In an environment where the operating temperature is higher (that is, 50

º

122

F), you should only expect the battery to last approximately one year.

º

C or

The NiMH battery in the VWG controller is fully discharged when factory shipped. Additionally, NiMH batteries lose
charge over time if not kept trickle-charged (for more details, see “About the Battery,”). Therefore, even a n ew unit (or
replacement battery) will require up to 18 hours of powered operation before it can p rovi de r eliab le b ackup pow er (i s at
full charge).

3) Standard Replacement Parts

Standard replacement parts are listed in Table 4 and can be ordered from stock without restriction. Standard
replacement parts cannot be returned for credit and should be disposed of in an appropriate manner.

Table 4 Standard replacement parts.

Part Number Description

VWG -BB NiMH Battery Pack (with battery bracket)—see “Replacing the Battery,”

Note Screws used for the VWG are standard #6-3 2 x 3/8" types, which you can obtain locally if lost.

Non-replaceable Parts

Other than the parts listed in the replacement parts sections, there are no serviceable components on the base
assembly.

• Memory

The current release of the VWG limits the maximum number of wireless thermostats that can be attached to the VWG40
to 30. Modification, or replacement of memory components requires software configuration and is not a field upgrade. For
additional information if modifying the memory capacity of the VWG, contact Viconics for technical support.

• Fuse

The VWG contains a non-user replaceable fuse, soldered on the circuit board. This fuse provides protection from interna l
shorts or connection to incorrect power supplies. If the fuse circuitry is suspect, contact Viconics for technical support.
See the “Returning a Defective Unit” section.

Returning a Defective Unit
For proper credit on the returned unit, ship the defective module to Viconics within 30 days.
Prior to returning the unit, contact Viconics to obtain a re turn ma terial authorization (RMA) number and other inst ructions.

Please provide:

• Product model

• Serial number

• Nature of the defect

Certifications

Federal Communications Commission (FCC)

This equipment generates, uses, and radiates radio frequency energy, and if not installed and used in accordance with
the instruction manual, may cause interference with radio communications. It has been tested and fou nd to c omply with
the limits for a computing device pursuant to Part 15 Subpart C of FCC Rules, which are designed to provide
reasonable protection against such interference when operated in a commercial environ ment.

12

Canadian Department of Communications( ICES-003)

This digital apparatus meets all requirements of the Canadian Interference-Causing Equipm ent Regulations.
Cet appareil numerique respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

Specifications
Platform

• PowerPC 405EP 250 MHz processor

• 64MB SDRAM & 64 MB Serial Flash

• 128 KB Static RAM

• Battery Backup - 5 minutes typical - shutdown begins within 10 seconds

• Real-time clock - 3 months backup max via battery

Operating System

• QNX RTOS

• IBM J9 JVM Java Virtual Machine

• NiagaraAX

Wired Communications

• 2 Ethernet Ports – 10/100 Mbps (RJ-45 Connectors)

• 1 RS 232 Port (9 pin D-shell connector)

• 1 RS 485 non-isolated port (3 Screw Connector on base board)

Wireless Communications

• Direct spread spectrum 2.4 GHz ISM bands

• Transmission power is under 1 mW at –0.4 dBm for channels 11 to 25 and –4.0 dBm for channel 26

Power Supply

• VWG-PS-DC 24 Vac to 15 Vdc panel mounted power supply for VWG

• VWG-PS-AC 120 Vac to 15 Vdc power supply for VWG with cord

Chassis

• Construction: Plastic, din rail or screw mount chassis, plastic cover

• Cooling: Internal air convection

• Dimensions: 6.313” (16.04 cm) W x 4.820”(12.24 cm) H (including connectors) x 2.438” (6.19 cm) D

Environment

• Operating temperature range: 0° to 50°C (32°F to 122°F)

• Storage Temperature range: 0° to 60°C (32°F to 140°F)

• Relative humidity range: 5% to 95%, non-condensing

Agency Listings

• UL 916, C-UL listed to Canadian Standards Association

• (CSA) C22.2 No. 205-M1983 “Signal Equipment”

• FCC Part 15 Subpart C

• C-tick (Australia)

13