Gai-tronics 7325-107 User Manual

Pub. 42004-689L2B

GAI-TRONICS® CORPORATION

A HUBBELL COMPANY

Model 7325-107 SmartSeries

Outdoor Metallic RTU Enclosure

Confidentiality Notice

This manual is provided solely as an operational, installation, and maintenance guide and contains
sensitive business and technical information that is confidential and proprietary to GAI-Tronics. GAI­Tronics retains all intellectual property and other rights in or to the information contained herein, and
such information may only be used in connection with the operation of your GAI-Tronics product or
system. This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any
third party.

General Information

The Model 7325-107 RTU (Remote Terminal Unit) Outdoor Metallic Enclosure is designed to be a
component in GAI-Tronics SmartSeries system. It mates with a SmartSeries handset or speaker amplifier
to form a SmartSeries station.

®

When connected to a SmartSeries system, the station operates as a standard multi-party Page/Party
device. In addition, it supports supervised input circuits and a relay output (supervision optional). The
following configurations are possible:

• One supervised input circuit and one supervised relay output (factory setting)

• Two supervised input circuits and no relay output

• Two supervised input circuits and one non-supervised relay output

OTE: The relay output circuit is intended to be used with GAI-Tronics-approved equipment. The

N

circuit may not support supervision of equipment that is not approved by GAI-Tronics.

How to Use the Assembly/Model

This section describes applications for the Model 7325-107 SmartSeries RTU Enclosure, its hardware,
software configuration, interfaces and operation.

Application

The SmartSeries Station RTU is designed to be used with the SmartSeries amplifiers and handsets in a
standard multi-party Page/Party
and deactivating a single relay circuit located in the SmartSeries station enclosure. This circuit is
referred to as a relay output. Terminal block TB3, located on the rear panel of the station enclosure,
provides an interface with this relay.

®

system. It is also possible to control an external device by activating

GAI-Tronics Corporation 400 E. Wyomissing Ave. Mohnton, PA 19540 USA

610-777-1374  800-492-1212  Fax: [phone]

ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS

V

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In addition to the relay output capability, the RTU also provides two inputs. These circuits provide an
interface to dry contact switches, (e.g., a pull box) that are monitored within the SmartSeries station. The
SmartSeries station reports any switch activation to the Master Control Unit (MCU).

The relay output is factory-set to be supervised through input #1. Refer to Figure 1. However, you may
elect to use input 1 by disconnecting supervision for the relay output.

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Figure 1.

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Hardware Configuration

The SmartSeries RTU allows three choices of operational configurations. Select the configuration that
best suits your need for circuits. The following table lists the RTU configurations:

Configuration Inputs Outputs

1
2
3

Configuration 1

One supervised input One supervised relay output (factory setting)

Two supervised inputs No relay output

Two supervised inputs One non-supervised relay output

In the first configuration, the relay output is supervised to continually ensure the integrity of the external
circuit. The first input, IN 1, is used to support supervision of the relay output circuit. This wiring
method requires the use of a 20 k-ohm, 2-watt resistor placed in parallel to the relay output device (e.g. a
beacon or strobe) as shown in Figure 2.

Figure 2. Beacon or Strobe

Wire the terminating resistor as close as possible to the beacon. Supervision is performed during non­activation of the relay output using IN 1. The second input, IN 2, remains available for detecting switch
activations. The following section describes switch wiring choices. The RTU provides 120 V ac for
beacon power on pins TB3-28, TB3-29, and TB3-30.

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OTE: This configuration is hardwired at the factory.

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Configuration 2

The second configuration uses two supervised input
circuits and does not make use of the single relay
output. This configuration is accomplished by
interfacing to terminal block TB3-23 and TB3-24 for
IN 1 and TB3-25 and TB3-26 for IN 2.

The external dry contact switch, either normally open
or normally closed respectively, should be in parallel

to a 15 k-ohm resistor as shown in Figure 3.

A 5.1 k-ohm resistor should be in series to the 15
k-ohm resistor. This provides a voltage divider
network used to detect a short or open across the
external circuit’s cabling.

This configuration requires that the orange wire from
TB3-23 going to the relay output circuit be
disconnected so as not to interfere with supervised
operation.

Another method of performing supervision using
multiple switches is shown in Figure 4. This method
requires only one 20 k-ohm resistor that is placed in
parallel to multiple normally open dry contact
switches at the end of line (EOL).

Figure 4. Input Line Supervision Multiple Switch - Example

Figure 3. PLC or Switch Box

Normally Open and Normally Closed - Example

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Configuration 3

In the third configuration, the relay output circuit is non­supervised. This means the RTU can command a system
device to activate or deactivate without the integrity of the
external circuit being verified. In this configuration, both
inputs are available.

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OTE: Unused inputs must be terminated at terminal

block TB3 with a 20 k-ohm, 2-watt resistor. Resistors are

Figure 5. Unused Input

supplied with the units. See Figure 5.

Software Configuration

The software configuration of the RTU is accomplished through the use of the System Start-up Tool
(SST). The type of RTU is dependent on the hardware configuration. Before setting up the software, it
is important to know how the inputs and outputs will be used.

Interface

Use the ribbon connector supplied with the unit to connect the SmartSeries relay circuit to the connector
at the base of the SmartSeries station. Wiring to the RTU is performed by connecting the external
circuits to the appropriate lugs on the TB3 terminal block located on the rear panel on the enclosure. The
following table shows the wiring for TB3:

Terminal Block

Lug No.

TB3-23 IN 1

Label

TB3-24 Common

TB3-25 IN 2

TB3-26 Common

TB3-27 Spare

TB3-28 Line (hot) 120 V ac 50/60 Hz, 2.5 amps max.

TB3-29 N (neutral) 120 V ac 50/60 Hz

TB3-30 Earth ground

The SmartSeries RTU is pre-wired from the factory to support one supervised input and one supervised
relay output. To disable the supervision of the relay output circuit by IN 1, disconnect the orange wire
going to the relay circuit card located at TB3-23. This is the only wiring modification necessary for any
of the three RTU configurations.

Operation

The supervised input and relay output functions are supported by the ADVANCE system.

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Installation

CAUTION

indicated on the approval listing in the “Specifications” section of this manual. Such installation
may cause a safety hazard and consequent injury or property damage.

WARNING

Insure proper grounding to protective earthing.

When installing an add-on station, consult the appropriated system connection diagram. When used in
conjunction with the station installation information and cable layout guide, should provide all the
information necessary to install additional Page/Party< stations.

Do not install this equipment in hazardous areas or areas other than those

Do not disconnect equipment while energized.

Enclosure Placement

All GAI-Tronics Page/Party® units are wired in parallel. Good system layout design minimizes the cable
required for each installation. GAI-Tronics multi-conductor cable, designed especially for this
application, is recommended. The number, size, and color-coding of conductors are listed in the system
connection diagram.

System layout and power cable length are very important when installing Page/Party< equipment.
Although it varies for different systems, the general guideline is that the total power cable length should
not exceed one mile (5280 feet) for 120 V ac systems. The total cable length is the most important
consideration while cable length between the stations is generally not a factor.

Mounting

The Model 7325-107 Outdoor Metallic RTU Enclosure is supplied with top and bottom openings for
conduit. We highly recommend using only the bottom
in through the opening or trapped moisture from entering through the conduit. If the top opening must be
used, carefully seal around the fitting to prevent moisture from entering.

For specific mounting details, refer to Figure 6. There are four 0.438-inch diameter mounting holes in
the corners of the amplifier enclosure. The suggested mounting height for all station enclosures is
54 inches (137 cm) up to the centerline of the enclosure.

If supplied with plain entry holes for gland entry:

• The gland or stopping plug is secured internally by a locknut, such that the gland or stopping plug

will not be dislodged by a 7 N-m impact.

• The enclosure will be maintained at IP 66 by a suitable sealing washer under the shoulder of the

cable gland.

For continued IP 66 protection, torque setting for securing the amplifier to the enclosure should be 10 to
12 in-lbs. or 1.13 to 1.36 N-m.

opening. This helps to prevent water from leaking

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Figure 6. Model 7325-107 SmartSeries Outdoor Metallic RTU Enclosure

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Wiring

See Figure 6. Follow the wire colors carefully because the colors noted in the figure correspond to
GAI-Tronics multi-party cable. The wires must be spade-lugged and connected securely to the terminal
block. An improper termination may result in diminished station performance.

CAUTION

For safe operation, connect terminal 3 of TB1 to system ground. See Figure 1.

Local Muting

Figure 1 illustrates local speaker muting when stations are completely assembled and paging operation
occurs. Normally, when the station button is pressed, the paging speaker connected to that station is
silenced (muted) to prevent acoustic feedback to the handset microphone. However, while the handset is
in use for party line conversations, the paging speaker is “live” to enable paging calls from other stations.

To disable the mute feature, follow these instructions:

1. Locate the lugged violet wire attached to terminal point 7 (mute) on the terminal block within the

enclosure.

2. Transfer the lugged violet wire to terminal point 8 (Page L1).

After any muting changes are made, unpack the station amplifier and install.

Mutual Muting

In the event that feedback occurs within an area and repositioning of the system speakers does not help,
mutual muting may be used to correct this problem.

The following steps will mutually mute the adjacent amplifiers/handsets within a zone.

1. Ensure that the purple lugged wire is connected to terminal 7 of TB1.

2. Connect terminal TB1-7 of the handset station to TB1-7 of the station within the zone that is causing

feedback. This is done by using the spare system wire (orange conductor) from within the system
cable that runs between the stations.

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Maintenance

Regular inspection and a good preventive maintenance program will increase the reliability of your
GAI-Tronics station. The GAI-Tronics Field Service Department can formulate a service contract suited
to your facility’s specific need for preventive maintenance.

®

In addition, the following procedure can be used to keep Page/Party

systems operating effectively.

WARNING

Before performing any of the following preventive maintenance steps, remove all power from the
station.

1. Remove the amplifier from the enclosure.

2. Visually check the interior of the enclosure for signs of contamination such as dust, condensation or

process liquid.

3. Using the No. 10440-002 Maintenance Cable, plug the amplifier into the connector in the enclosure.

Check, and if necessary, adjust the amplifier to maximize performance.

4. Reinstall the amplifier in the enclosure. Ensure that all gaskets and hardware are in place. Failure to

install the gaskets, which also act as spacers, can result in damage to the connectors on the amplifiers
and inside the enclosures and can cause system faults.

It may become necessary to re-terminate some or all of the enclosures in a system. If so, strip the wires
back to clean copper and connect only one wire to each connector to allow for easier future
troubleshooting.

To maintain system operations, we recommend keeping one SmartSeries RTU per every ten installed
units in the site maintenance inventory.

If the equipment requires service, contact your Regional Service Center for a return authorization number
(RA#). Equipment should be shipped prepaid to GAI-Tronics with the return authorization number and a
purchase order number. If the equipment is under warranty, repairs will be made without charge. Please
include a written explanation of all defects to assist our technicians in their troubleshooting efforts. Call
800-492-1212 for help in identifying the Regional Service Center closest to you.

Fuse

WARNING

Do not remove fuse when energized. Replace with the same type and size fuse.

RTU Fuse = T2.5A, 250V, 5×20mm, IEC60127-2.

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Troubleshooting

The following table lists some hints to aid technicians in troubleshooting.

Problem Solution

Station responds to polling
messages but the relay output
does not respond.

Station does not respond to poll
message.

The following device fault
message received at the MCU:

“Supervised Input Circuit”

Device fault message is not
received but the input circuits do
not activate an alarm.

A device fault is not reported to
the MCU but the output circuit
does not respond to an activation
command.

Relay output does not engage.

Check for trouble report from station if the output is being
supervised. The report will indicate what type of trouble has
occurred. If the message, “Supervised Output Circuit” is
reported, check relay circuit and supervision path.

Check and replace fuse on the back panel of the enclosure as
well as fuses on the SmartSeries device.

Check that the input circuit is properly terminated.

Check the external circuit connected to either input of the RTU
for a short or open. The input circuit number is identified on the
device fault message.

Verify that the SST configuration is set up to report the alarm.

Remove and replace the SmartSeries Handset or Amplifier.

Check and replace the SmartSeries station relay circuit card.

Ensure the ribbon cable from the J3 connector to the RTU board
is attached correctly.

Feedback occurs during page
only.

Cross talk occurs.

1. If a speaker is close to the station, try using the muting

feature in amplifier enclosure at terminal blocks by
connecting the violet wire at terminal 8 to terminal 7. See
wiring diagram and refer to the mutual muting section of this
manual.

2. Check line terminations.

3. Check location and orientation of speakers in the area.

Feedback may be caused feedback by adjacent stations.

4. Call GAI-Tronics service for details.

One or more system cable pairs may be improperly terminated.
Visually inspect the system cable for accidental crossing of cable
pairs or grounds.

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Specifications

Construction/Finish......................................................... Sand-cast A319 aluminum alloy, cam-style latch,

hinged door with gasket; gray enamel paint

Mounting..................................................... Wall, column, or pole (mounting kit required for pole mount),

four 0.44 inch (11.2mm) mounting holes

Connections ............................................................................... Internal screw-type barrier terminal blocks

External controls........................................................................................................ Rotary selector switch

Dimensions ..................................................... 14.5 H × 10.38 W × 9.6 D inches (368.3 × 263.6 ×244 mm)

Temperature range (operating and storage)........................................ −22º F to +158º F (−30º C to +70º C)

Shipping weight .................................................................................................................. 20.4 lbs. (9.3 kg)

Approvals

Enclosure Model 7325-107.................................................................................................II 3G EEx nA IIC

Temp −30 to 70ºC
Location Zone 2
IP 66 when installed with a Model 701-305, 751-005, 701-905, or 751-905 Amplifier

NRTL listed .............................Suitable for use in hazardous locations Class I, Div. 2, Groups A, B, C, D;

Class II, Div. 2, Groups F, G;
Class III, Div. 2
when used with listed 701-305, 701-905, 751-005 or 751-905 Amplifier
Enclosure environmental rating: Type 4X and 13

CE Mark:

Certificate No. DEMKO 05 ATEX 0502028X
Notified Body Id No. 0539
UL International DEMKO A/S
Lyskear 8
DK-2730 Herlev
Denmark

Replacement Parts

Contact GAI-Tronics for replacement part information.

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Warranty

Equipment. GAI-Tronics warrants for a period of one (1) year from the date of shipment, that any

GAI-Tronics equipment supplied hereunder shall be free of defects in material and workmanship, shall
comply with the then-current product specifications and product literature, and if applicable, shall be fit
for the purpose specified in the agreed-upon quotation or proposal document. If (a) Seller’s goods prove
to be defective in workmanship and/or material under normal and proper usage, or unfit for the purpose
specified and agreed upon, and (b) Buyer’s claim is made within the warranty period set forth above,
Buyer may return such goods to GAI-Tronics’ nearest depot repair facility, freight prepaid, at which time
they will be repaired or replaced, at Seller’s option, without charge to Buyer. Repair or replacement shall
be Buyer’s sole and exclusive remedy. The warranty period on any repaired or replacement equipment
shall be the greater of the ninety (90) day repair warranty or one (1) year from the date the original
equipment was shipped. In no event shall GAI-Tronics warranty obligations with respect to equipment
exceed 100% of the total cost of the equipment supplied hereunder. Buyer may also be entitled to the
manufacturer’s warranty on any third-party goods supplied by GAI-Tronics hereunder. The applicability
of any such third-party warranty will be determined by GAI-Tronics.

Services. Any services GAI-Tronics provides hereunder, whether directly or through subcontractors,

shall be performed in accordance with the standard of care with which such services are normally
provided in the industry. If the services fail to meet the applicable industry standard, GAI-Tronics will
re-perform such services at no cost to buyer to correct said deficiency to Company's satisfaction provided
any and all issues are identified prior to the demobilization of the Contractor’s personnel from the work
site. Re-performance of services shall be Buyer’s sole and exclusive remedy, and in no event shall GAI­Tronics warranty obligations with respect to services exceed 100% of the total cost of the services
provided hereunder.

Warranty Periods. Every claim by Buyer alleging a defect in the goods and/or services provided

hereunder shall be deemed waived unless such claim is made in writing within the applicable warranty
periods as set forth above. Provided, however, that if the defect complained of is latent and not
discoverable within the above warranty periods, every claim arising on account of such latent defect shall
be deemed waived unless it is made in writing within a reasonable time after such latent defect is or
should have been discovered by Buyer.

Limitations / Exclusions. The warranties herein shall not apply to, and GAI-Tronics shall not be

responsible for, any damage to the goods or failure of the services supplied hereunder, to the extent
caused by Buyer’s neglect, failure to follow operational and maintenance procedures provided with the
equipment, or the use of technicians not specifically authorized by GAI-Tronics to maintain or service the
equipment. THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE IN LIEU OF AND
EXCLUDE ALL OTHER WARRANTIES AND REMEDIES, WHETHER EXPRESS OR IMPLIED BY
OPERATION OF LAW OR OTHERWISE, INCLUDING ANY WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Return Policy

If the equipment requires service, contact your Regional Service Center for a return authorization number
(RA#). Equipment should be shipped prepaid to GAI-Tronics with a return authorization number and a
purchase order number. If the equipment is under warranty, repairs or a replacement will be made in
accordance with the warranty policy set forth above. Please include a written explanation of all defects to
assist our technicians in their troubleshooting efforts.

Call 800-492-1212 (inside the USA) or 610-777-1374 (outside the USA) for help identifying the
Regional Service Center closest to you.

(Rev. 10/06)