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Pub. 42004-307G
G A I - T R O N I C S ®
A H U B B E L L C O M P A N Y
Model GC-AC1, GC-DC1, and GC-AC2
EZ Page Industrial Intercoms
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.
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 manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any
third party.
General Information
Product Overview
GAI-Tronics' EZ Page Intercoms are designed
for two-way communication in non-hazardous,
industrial applications. Each model is field
configurable for one of two types of systems:
either Listen/Talk or Master/Slave. All units are
factory-configured for the Listen/Talk system.
Listen/Talk System
In a Listen/Talk system, the press-to-talk switch
must be held down as long as the operator talks.
Releasing the switch deactivates the microphone
and returns the unit to the listen mode.
Master/Slave System
In a Master/Slave system the Master unit controls
the talk/listen operation of the Slave unit. The
Slave unit is normally in the talk mode, providing
hands-free communication to the operator. The
Master/Slave system is ideal for typical gate
station applications. An internal switch is used to
designate a unit as a master or as a slave.
Figure 1. Intercom Outline Diagram
(shown with optional mounting bracket installed)
Balanced and Unbalanced Systems
The EZ Page system is a balanced system; however, it can be adapted for use in an unbalanced system. If
interfacing this equipment with other similar products on the market, determine if your system is balanced
or unbalanced.
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374 800-492-1212 Fax: 610-796-5954
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Table of Contents
Related Manuals for GAI-Tronics GC-AC1
Summary of Contents for GAI-Tronics GC-AC1
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Page 1: Confidentiality Notice
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 manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any third party. -
Page 2: System Requirements
Input Interconnection helpful. Models Voltage (Customer-supplied) Cable Distance Limitations GC-AC1 120 V ac NEMA 5-15R style receptacle : Calculations are based on the use of No. GC-DC1 12-16 V dc Small junction box for Class 2 18 AWG twisted pair wire. -
Page 3: Internal Settings
Pub. 42004-307G EZ P Page 3 of 16 NDUSTRIAL NTERCOMS Internal Settings The following procedure describes how to change the internal settings. If the intercom will be used as a Listen/Talk unit or as a Master unit in a balanced line system, then no changes to the internal PCBA’s jumper or switch settings are required. -
Page 4: Power Connection
Remove local power before opening the unit or before performing any service. Input Voltage Model Conductor 1 Conductor 2 Conductor 3 Conductor 4 120 V ac via GC-AC1 Black Neutral White Safety Green supplied 9.5-foot ground cord w/NEMA 5-15P plug 12–16 V dc... -
Page 5: System Interconnect
Reminder about balanced and unbalanced systems: If interconnecting to an unbalanced system, be sure to move the Intercom’s internal jumper (P5/J5) to the U position. For example, GAI-Tronics RigCom NBAL products use an unbalanced system; therefore, the Intercom’s internal jumper (P5/J5) must be moved to the U position. - Page 6 Pub. 42004-307G EZ P Page 6 of 16 NDUSTRIAL NTERCOMS Figure 5. Master/Slave Balanced Configuration Figure 6. Balanced Common Line Configuration f:\standard ioms - current release\42004 instr. manuals\42004-307g.doc 03/15...
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Page 7: Optional Footswitch Interface
NTERCOMS Optional Footswitch Interface Interconnection of a GAI-Tronics footswitch to a Listen/Talk or Master unit’s control cable pair will allow hands-free operation of the unit’s Listen/Talk functions. Refer to Figure 7 for more detail showing interconnection to system wiring. No internal connection to the unit is needed. -
Page 8: Operation
Internal Fuse Replacement To reduce the risk of fire, replace fuses only with the same type and value as follows: For Model GC-AC1: 4/10 amp, slo-blo, 250 V, 3AG For Model GC-DC1: 2 amps, slo-blo, 250 V, 3AG ... -
Page 9: Troubleshooting
Pub. 42004-307G EZ P Page 9 of 16 NDUSTRIAL NTERCOMS Troubleshooting Periodically check for frayed or cracked wiring, loose connections or signs of corrosion inside and outside of the unit. Problem Possible Cause Possible Solution No audio is received at Unit’s speaker is not turned on Check that local power is available unit... -
Page 10: Specifications
NTERCOMS Specifications Electrical Model GC-AC1 Voltage ............. 108/132 V ac range, 50/60 Hz, (120 V ac, 60 Hz, nominal) Power consumed (at nominal) ........Off (mute)/Standby/Maximum Speaker Out (8 watts) 6 VA, 1.8 W/7.2 VA, 3.6 W/27.6 VA, 22.5 W Model GC-DC1 Voltage .................... -
Page 11: Replacement Parts
GC-AC2 ..................2/10 amp, 250 V, slo-blo (.25 1.25 inch) Integral cables: Power: GC-AC1 ...... ~9.5-foot, 3-conductor, No. 18 AWG, type SJTW with NEMA 5-15P plug Power: GC-DC1, GC-AC2 ........~9.5-foot, 4-conductor, 18 AWG, SJOW with wire ends Audio/Control ..........~9.5-foot, 2 twisted pair cable, 18 AWG, PVC with wire ends Enclosure .......................... -
Page 12: Interfacing An Ez Page Station To Ms39Xx Series Rigcom Stations
Pub. 42004-307G EZ P Page 12 of 16 NDUSTRIAL NTERCOMS Appendix A Interfacing an EZ Page Station to MS39xx Series RigCom Stations The EZ Page station is designed to operate with the MS39xx Series RigCom Stations. The MS39xx Series uses an unbalanced system for communication and uses the negative of the audio pair as the ground reference for the control signal. - Page 13 Pub. 42004-307G EZ P Page 13 of 16 NDUSTRIAL NTERCOMS Figure 9. Master/Slave Configuration with EZ Page as Slave Figure 10. Common Line Configuration f:\standard ioms - current release\42004 instr. manuals\42004-307g.doc 03/15...
- Page 14 Pub. 42004-307G EZ P Page 14 of 16 NDUSTRIAL NTERCOMS Appendix B Interfacing EZ Page Stations to Model 400-001 RigCom Stations The EZ Page and Model 400-001 stations are designed to operate either in balanced or unbalanced systems. An unbalanced system for communication uses the negative of the audio pair as the ground reference for the control signal.
- Page 15 Pub. 42004-307G EZ P Page 15 of 16 NDUSTRIAL NTERCOMS Figure 13. Unbalanced Common Line Configuration Figure 14. Master/Slave Balanced Configuration with Model 400-001 as Master f:\standard ioms - current release\42004 instr. manuals\42004-307g.doc 03/15...
- Page 16 Pub. 42004-307G EZ P Page 16 of 16 NDUSTRIAL NTERCOMS Figure 15. Master/Slave Balanced Configuration with Model 400-001 as Slave Figure 16. Balanced Common Line Configuration f:\standard ioms - current release\42004 instr. manuals\42004-307g.doc 03/15...
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Page 17: Warranty
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.
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