GAI-Tronics 10461-002 User Manual

Pub. 42004-220B

GAI-TRONICS® CORPORATION

A HUBBELL COMPANY

Model 10461-002

Centra-Page Card Rack

Confidentiality Notice

This manua l is provide d sole ly as an operatio nal, installation, and ma inte nance guide and conta ins
sensitive business and t e chnical informatio n tha t is confidentia l and pr opri et ary to GAI- Tronics.
GAI-Tronics 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 manu al may not be dis clos e d in any form, in whole or in pa rt, direct ly or i ndir ectly, to a ny
third pa r ty.

Introduction

The GAI-Tronics Centra-Page system provides dependable paging and party line communications for
rugged and hazardou s industrial f aciliti es . Centra- P age f eatures c e ntrally loc ated elect ron ic s tha t pr ovide
environmental protection for components. Standard Centra-Page cabinets can support up to 30 handset
stations. Alarms and telephone interfacing can also be added to Centra-Page systems.

General Information

The Model Centra-Page 10461-002 Card Rack is one of the primary components of a Centra-Page
system. All Ce ntra-Pa ge s yste ms requir e at least one card rac k, which houses the indivi du al line ca rds
that correspond to specific handset stations and speakers in the system. The card rack contains
termination points for 22 to 28.8 V dc power as well as the alarm/tone generator and the telephone
interface connections.

Each card rack has the capacity for holding up to ten GAI-Tronics Model 69037-101 Line Cards. These
cards plug easily into the rack with the card ejectors at the top and components to the right. The cards are
keyed so that they cannot be plugged in backwards. Centra-Page systems using the Model 10468-002
Centra-Page Central Cabinet have maximum capacity of three card racks and therefore 30 line cards (and
stations). Some large Centra-Page systems involve custom cabinets or other customer-designed
installations.

All of the hands et statio ns and speakers in a Centra-Pa ge syst e m are h omerun (in dividual ly) w ired back to
the card rack(s). Terminations for each station and associated speaker are found in the rear of the card
rack. For wiring information, refer to Figure 1, which illustrates a typical Centra-Page system, to the
Model 10468-002 Centra-Page Central Cabinet manual, Pub. 42004-222, and the individual component
manuals.

When a Model 10961-001 AMI Centra-Page Interface is used in a Centra-Page system, priority encoded
tones are sent over all speakers in the system through the line cards. Refer to Pub. 42004-345 and 42004­371 for details of operation. Additionally, a telephone line can be connected to the system allowing off­site personnel to communicate to those in the plant or facility.

GAI-Tronics Corporation P.O. Box 1060, Readi ng, PA 19607-1060 USA

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

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

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Hazard ous Areas

The Model 10461 Card Rack must

be mounte d in a no n-haz ardous a rea, although other port ions of the
Cent ra- P age syste m may be l ocated in D iv. I or Div. II haz ardous areas if app ropriate wiring
configurations and barriers are used. Refer to Pub. 42004-356, Control Drawing 72979, for proper
installa tion of sta tions f or int rins ic ally saf e operatio n in Class I, D i v. I, Group C and D hazardous areas.

A typ i c al C e ntra-Pa ge s yste m w ith c omponents in both hazardous and non-haz ardou s areas is shown in
Figure 1.

Figure 1. Typical Centra-Page System Diagram

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Installation

Po wer Requirements

This equipment is designed for nominal 24 V dc operation (22 to 28.8 V) with the negative side
grounded, 20 amps maximum, 2 amps idle. However, neither power supply lead is actually wired to the
ground termi nal.

The Centra-Page system may be used with negative ground, positive ground, or ungrounded power
sources. The card rack must be mounted in a non- haza rdous area.

If installing a station and line card as an add-on, please consult the following chart to ensure proper power
will be supplied.

Power Supply Current Requirements

Mode 10 Cards 20 Cards 30 Cards

Standby 0.8 amp 1.5 amps 2.3 amps
Page (maximum load) 5.7 amps 11.4 amps 17.1 amps
Alarm (typical) 3.8 amps 7.5 amps 11.3 amps
Alarm (maximum level) 12.5 amps 25.0 amps 37.5 amps

Notes regarding power supply current requirements listed above:

1. Ra tings at 27.0 V dc at the central cabin et. Add 8% for page and ala rm at 2 8.8 V dc.

2. Full load is defined as 15-watt load on all cards with levels adjusted at factory; 2-watt alarm output.

3. Typical load is defined as 7.5-watt load (such as 16-ohm loudspeaker connected to 8-ohm output).

4. Maximum level is defined as 15-watt loads and level control adjusted for 15-watt alarm level on all

cards.

5. Ratings for alarm based on continuous tones. Pulse tone reduces current to about 60%.

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