Simplex 2001 Voice Communications Power Amplifiers Module Descriptions

Communications Amplifiers Descriptions 1988 Simplex Time Recorder Co Gardner Mass 01441 0001 U S A HAZARD electrical power when making any adjustments servicing should be performed by quali Simplex Representatives repairs DUAL POWER AMPLIFIER MODULE DESCRIPTION to Fig 1 function of the Voice Communications of the input signal from the preamplifier This signal is used to drive the system speakers 2001 6001 Dual Power Amplifier to produce an enlarged dual amplifier consists of two amplifiers audio output transformers an Amplifier Tie Module The dual amplifier operating voltage comes from the amplifier dedicated power supply WD No 641 l 47 during normal conditions or from a battery reserve during a main power outage amplifier secondary amplifier AMPLIFIER Kl OUTPUT to 2001 Voice Communications a description Concepts this block diagram Kl Kl SELECT RELAY MODULE AUDIO OUTPUT TRANSFORMER POWER AMPLIFIER MODULE 1 REFERENCES dual amplifier circuitry is shown on the following drawings WD No 841 279 Amplifier Tie Module No 841 277 Dual Power Amplifier No 841 238 Power Amplifier Board Diagram primary amplifier Kl secondary amplifier de energized loss of main power STATUS Power Amplifier 841 238 Tie Module 841 279 energized primary amplifier fails FUNCTION to WD No 841 277 and Fig 2 Condition operating voltage energizes Kl WD No 841 238 on the primary and secondary amplifier boards i 24V WD No 841 238 and energizes relay Kl pin P2 4 of the 2001 3021 Power Supply WD No 841 147 applied to TBl 2 of the amplifier relay Kl is energized relay contacts transfer and the operating voltage is fed to the amplifiers 24V from pin Pl 1 of power supply 841 l 47 is applied to TBl 3 of the amplifier boards WD No 841 238 voltage is fed to Kl A contacts and powers the amplifiers low level audio signal from the preamplifier This audio signal is fed through is now stepped up to the required voltage applied to TBl 6 OV terminals WD No 841 amplifier board and the audio output transformer The audio output signal IN and TBl 5 fed to the Amplifier Tie Module the amplified output signal from the audio transformer of both amplifiers amplifier signal is fed to TBl 5 and TBl 3 and the secondary amplifier signal is fed to TBl 7 and TBl 9 output from the primary to the 841 2791 The tie module contains a relay which when energized switches output of the tie module TBl 11 and amplifier While in the normal condition relay Kl de energized 12 comes from the primary amplifier Separate outputs of the primary and secondary amplifier output signals seen on TBl 4 and TBl 6 amp and TBl 8 and TBl 10 secondary amp Operation a failure of the primary amplifier occurs a 24V is applied to TBl 1 of the tie module energizing 841 279 When relay Kl backup amplifier output of the tie module transferred energized Kl relay WD the the primary a failure of the secondary amplifier occurs the trouble will be detected and the system will continue functioning on primary amplifier V TRANSFERS RELAY CON WHEN PRIMARY AMP TBl 6 MODULES SECONDARY ISECONDIRY AUDIO POWER AMPLIFIER MODULE 2 SIG IN POWER SUPPLY D BUS OF MOTHERBOARDS SPEAKER MODULES WHEN ALARM TURNS ON PRE AMP 2 Ap POWER SUPPLY D BUS OF MOTHERBOARDS SPEAKER MODULES TURNS ON WHEN ALARM Power Outage Condition Kl relays are de energized However a main power outage TBl 4 This voltage disconnected is operating on battery reserve reserve At this time troubles will be reported power supply voltage no longer provides operating voltage to the dual amplifier battery reserve applies voltage to amplifier terminals TBl 3 the amplifier components by the Kl A relay contacts So when the amplifiers are turned off and will not draw supervisory current from the an automatic or manual alarm occurs during a main power outage when the amplifiers are turned off a 24V from terminal TBl 8 No 841 236 Relays Kl are energized and the amplifiers are turned on through the Kl A contacts Bus is applied to the TBl 1 of the amplifiers DUAL POWER AMPLIFIER MODULE DESCRIPTION as 2001 6001 Dual Power Amplifier Module except for the following Drawing Reference the Dual Power Amplifier Diagram see 2001 6002 WD No The amplifier boards No 841 238 do not relay Kl A jumper installed the empty socket pins 3 and 5 Fig 3 The relay operating voltage at and TBl 2 No 841 238 not used The Power Outage and Condition of the 6001 module description are not exceptions in the amplifier being powered and supervised by the battery reserve power during main power outage 3 SINGLE POWER AMPLIFIER MODULE DESCRIPTION to Fig 4 as 2001 6001 Dual Power Amplifier Module except for the following Drawing References For the Amplifier Tie Module drawing see 2001 6000 ATl WD No 841 288 For the Single Power Amplifier Diagram see 2001 6003 WD No 841 275 The Amplifier Tie Module does not contain relay Kl The Operation section of the 6001 module description not applicable IO zuui VOIC a 0mmun cat on s Manual POWER AMPLIFIER MODULE 4 SINGLE POWER AMPLIFIER MODULE DESCRIPTION as 2001 6001 Dual Power Amplifier Module except for the following Drawing References For the Amplifier Tie Module drawing see 2001 6OOO ATl WD No 841 288 For the Single Power Amplifier Diagram see 2001 6004 WD No 841 274 The Amplifier Tie Module does not contain relay Kl The Operation section of the 6001 module description not applicable The amplifier board WD No 841 238 does not contain relay Kl A jumper is installed in the empty relay socket across pins 3 and 5 Fig 1 The relay operating voltage at TBl 1 and TBl 2 WD No 841 238 not used The Power Outage and Condition sections of the 6001 module description are not applicable exceptions outlined power during a main power outage steps 4 thru 7 result in the amplifier being powered up and supervised by the battery The 6004 Single Power Amplifier Module is similar in appearance the 6003 Single Power Amplifier Module Fig 4 SINGLE POWER AMPLIFIER MODULE DESCRIPTION as 2001 6001 Dual Power Amplifier Module except for the following Drawing References For the Amplifier Tie Module drawing see 2001 6000 ATl WD No 841 288 For the Single Power Amplifier diagram see 2001 6014 WD No 841 342