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Pub. 42004-615L2
GAI-TRONICS® CORPORATION
A HUBBELL COMP ANY
Model 670-801-EX and 670-801-UL
SmartSeries Amplifiers
for CENELEC Zone 1 and UL Div. 1
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 infor
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 2 of 15 Hardware Configuration The exterior view of the cast aluminum explosion-proof enclosure is shown in Figure 1 below: Figure 1. Model 670-801-EX/UL SmartSeries Amplifier \\s_eng\gtcproddocs\standard ioms - current release\42004 instr. manuals\42004-615l2.doc 6/97
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 3 of 15 External The enclosure and cover are fabricated from thick aluminum castings. The cover and the enclosure mate at machined rims to form the flame path seal. The cover is secured to the enclosure with bolts around the perimeter. The enclosure entries are as follows: The Model 670-801-EX cable gland entries are shown in Figure 2: On the base: Three M25 entries, two fitted with plugs; and one M16 entry
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 4 of 15 Internal The SmartSeries amplifier contains the following components: 3.56 MAX • Chassis (90.42) • Bias Power Supply sub-assembly fixed to the front panel • Speaker transformer fixed at the top of the chassis • Base-16 printed circuit board assembly (PCBA) with a plug at the top, pointing to the rear • FSK Modem PCBA fixed to the Base-16 PCBA CHASSIS GASKET Figure 4. SmartSeries Ampli
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 5 of 15 Block Diagram Figure 5. Model 670-801 Block Diagram As shown on Figure 5, P1 is the 16-pin male connector located on the back of the Base-16 PCBA. It plugs into the socket located inside the cast aluminum enclosure. The socket provides connection to the multi-party cable containing the page/party lines and ac power. The Base-16 PCBA conducts ac power to the Bias Power Supply PCBA through connector
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 6 of 15 Interfaces The unit interfaces to the multi-party cable and to the external loudspeaker, and auxiliary devices via P1, a 16-pin connector. Pin No. Function Description Pin No. Function Description 1 Party line (L1) 9 Party line (L2) PL_L1 PL_L2 2 PG_L1 Page line (L1) 10 PG_L2 Page line (L2) 3 MT_L1 Mute (L1) 11 MT_L2 Mute (L2) 4 AUX0IN* Auxiliary input (0) 12 AUX1IN* Auxiliary input (1) 5 SPKR_8 Spe
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 7 of 15 Installation Before installing SmartSeries equipment, design the system layout taking into consideration personnel safety, operational function and convenience, and power cable length. In general, for 115 V ac systems the total power cable length should not exceed 1 mile (1.6 km), but the length of cable between the stations is not a critical factor. However, it is a good practice to run a separate pow
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 8 of 15 UL Version 1. Install the conduits for system and speaker cable and make connection to the enclosure. External conduits in Class I, Groups C, and D must have gas seals located not more than 18 inches (457mm) from the amplifier enclosure. External conduits in Class II and Class III areas must also have seals if the conduit is not dust-tight. 2. Feed the wiring through the conduit and into the enclosure
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 9 of 15 NOTE: If acoustical feedback occurs between the speaker associated with the amplifier and the handset on a nearby station, the speaker can be muted by moving the violet wire on the enclosure on TB1 to terminal 7. Figure 7. Wiring Detail \\s_eng\gtcproddocs\standard ioms - current release\42004 instr. manuals\42004-615l2.doc 6/97
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 10 of 15 Operation This unit amplifies page audio for broadcast over external speaker(s). Adjustments CAUTION It is necessary to open the explosion-proof enclosure to make adjustments. Make adjustments only when the conditions at your facility are such that no explosive atmospheres can be present. This assembly includes one control that permits adjustments to be made while the assembly is mounted in its enc
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 11 of 15 Offset Level The Offset Level adjustment causes the speaker amplifier to maintain a set difference between the ambient level and the speaker output level. The SmartVolume™ feature measures the ambient noise at the associated speaker and adds the Offset Level to set the speaker amplifier gain. This keeps page announcements louder than the ambient noise. The Offset Level can be set from 0 dB (the speak
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 12 of 15 Maintenance In order to verify and ensure explosion-proof integrity, perform regular preventive maintenance and inspection checks on the GAI-Tronics explosion-proof stations. The GAI-Tronics Field Service Department can formulate a service contract to suit specific preventive maintenance needs. CAUTION Remove power from the enclosure before performing any maintenance. Use the following procedures to
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 13 of 15 Software Configuration The unit has the following versions of software: PCBA Device Part Number Base-16 PCBA U2 50086-014 FSK modem PCBA U1 49023-030 The SmartSeries Amplifier has software on U2 of the Base-16 PCBA and on U1 of the FSK Modem PCBA. This software provides the following standard programmable features, accessible from the SST Configuration screen when the station is in an ADVANCE system
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 14 of 15 Specifications Electrical Voltage .............................................................................. 90 to 140 V ac (120 V ac nominal) 50/60 Hz Power consumed ......................... Zero/maximum signal (12 watts): 15 VA, 10.5 watts/ 53 VA, 34 watts Speaker Amplifier Output.......................................................................... 12 watts minimum, with nominal supply volt
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Pub. 42004-615L2 Model 670-801-EX and 670-801-UL SmartSeries Amplifiers Page: 15 of 15 Replacement Parts Model Number Description 751-801 Amplifier 12555-001 FSK PCBA Kit 12557-001 Base-16 PCBA Kit 12558-001 Bias Power Supply PCBA Kit 12530-001 Transformer/Connector Subassembly Reference Material Reference to Assembly/Model Drawings Published by Title GAI-Tronics Ref. No. GAI-Tronics SmartSeries Amplifier Enclosure Outline drawing 222-143 GAI-Tronics SmartSeries Plug-in Amplifier O
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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,
