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97-7224006_3-31-15

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11

7224 OPERATOR’S MANUAL – SECTION 3

3

Amplifier Operation

3.1 Front-Panel Controls

This section provides an overview of Front-Panel
controls and indicators found on the 7224.

3.1.1 Power Switch

The Power Switch controls the AC mains power to

the amplifier. Switch to the ON position (|) to turn
the amplifier on. Switch to the OFF position (O) to
turn the amplifier off. See

Figure 3.1.

The Power Switch also serves as a Breaker. When
the Breaker is tripped, the Power Switch moves to

a neutral position between ON and OFF. To reset
the Breaker, turn the amplifier OFF (O) and then
turn it back ON (I).

3.1.2 Gain Control

The Gain Control Knob increases/decreases the
gain from 0 – 100% of the overall Gain (factory
default Gain is 20). See

Figure 3.2.

3.1.3 Push Buttons

There are three Push Buttons on the 7224.

Enable –

For stand-alone amplifiers, Enable will

release the amplifier from Stop mode and place
the amplifier in Run mode (both Ready and Run
LEDs will be lit). When the amplifier is placed
in Run mode, the amplifier will amplify the input
signal. If an amplifier is disabled using a Remote
Standby application, the amplifier will be placed in
Standby mode (both Ready and Standby LEDs will
be lit). To return the amplifier to Run mode, release

the Standby condition using the remote switch.
See the “Applications” section of this manual for

more information on remote amplifier operation.

In multi-amp systems that have been configured to

start up in Standby mode, when the Enable button

is pressed on one amplifier, the amplifier will be

placed in Standby mode and remain in Standby

mode until all amplifiers in the system have been

Enabled. The system will automatically proceed

to Run mode when all amplifiers in the system

achieve Standby mode.

Stop –

For stand-alone amplifiers, Stop will place

the amplifier in Stop mode (both Standby and Stop
LEDs will be lit). When the amplifier is part of a

multi-amp system, pressing the Stop button on any

amplifier in the system will place that amplifier in
Stop mode and all other amplifiers in the system
in Standby mode. When an amplifier is in Stop or

Standby mode, the low-voltage transformer is en-

ergized but the high-voltage transformers are not.

Figure 3.1 – Power Switch

Figure 3.2 – Gain Control

Figure 3.3 – Push Buttons

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Содержание 7212

Страница 1: ...7224 Operator s Manual Single Channel Industrial Amplifier for Demanding High Power Systems 574 295 9495 www AETechron com 2507 Warren Street Elkhart IN 46516 ...

Страница 2: ...reet Elkhart IN 46516 U S A 574 295 9495 www aetechron com SUMMARY OF WARRANTY AE TECHRON INC of Elkhart Indiana Warrantor war rants to you the ORIGINAL COMMERCIAL PURCHASER ONLY of each NEW AE TECHRON INC product for a period of one 1 year from the date of purchase by the original purchaser warranty period that the product is free of defects in materials or workmanship and will meet or exceed all...

Страница 3: ...radio frequency electromagnetic field immunity test EN 61000 4 4 2004 A1 2010 Electromagnetic compatibility EMC Part 4 Testing and measurement techniques Electrical fast transient burst immunity test EN 61000 4 5 2006 Electromagnetic compatibility EMC Part 4 Testing and measurement techniques Surge immunity test EN 61000 4 6 2009 Electromagnetic compatibility EMC Part 4 Testing and measurement tec...

Страница 4: ... 4 3 Configuration Settings Located on the Power Supply Board 21 5 Applications 24 5 1 Remote Status and Control using the SIM Interlock I O Connector 24 5 2 Controlled Current Operation 28 5 3 Multi amplifier Systems 32 6 Amplifier Signal Flow 37 6 1 Input Signals 37 6 2 AC Mains Power 37 7 Maintenance 38 7 1 Clean Amplifier Filter and Grills 38 8 Troubleshooting 39 8 1 Introduction Precautions 3...

Страница 5: ...22 Figure 4 13 J4 and J8 Plug Locations for High Voltage Output 22 Figure 4 14 Bi Level Power Switch Location 23 Figure 5 1 Remote Status and Control Pinouts 24 Figure 5 2 Remote Run Standby Monitor 24 Figure 5 3 Remote Status and Reset Schematic 25 Figure 5 4 Remote Enable Standby 26 Figure 5 5 Remote Voltage Monitoring 27 Figure 5 6 Remote Current Monitoring 27 Figure 5 7 Remote Current Monitori...

Страница 6: ...andwidth of DC to 300 kHz at rated power Continuous output of over 1 100 watts RMS at 4 ohms 40 mSec pulses of up to 52 amperes peak into a 0 5 ohm load System output of over 4 000 watts or over 200 amperes maximum is possible with multiple interconnected amplifiers Efficient design and light weight chassis materi als allow amplifier to occupy only 2U height and weigh only 41 lbs Robust linear pow...

Страница 7: ...ed when placed on other equipment or on a bench top especially when there is dirt present To protect the finish a set of rubber feet is included in the toolkit that can be installed on the bottom of the amplifier Allow ample space on the sides and especially the back of the amplifier for heated air to escape The amplifier should be mounted in a rack that is adequately ventilated and not sealed Lik...

Страница 8: ... ring terminals tinned wires up to 10GA in size or bus bars with 0 18 in 4 6 mm holes are recommended when connecting to the output terminals Connect the load across the terminals marked OUTPUT positive and COM negative ground The third terminal CHAS SIS GROUND can be connected to an external ground point such as the rack chassis See Figure 2 2 Always use the appropriate wire size and insula tion ...

Страница 9: ...ced Input connector and to the right to select the Balanced Input connector Note that when the Input Select switch is in the right position both Unbalanced and Balanced Input connectors are enabled IMPORTANT The Input Select switch also func tions as a Ground Lift switch for the Unbal anced Input connector If circulating currents ground loops 60 Hz Hum occur when using the Unbalanced Input move th...

Страница 10: ... relief screw to lock the power cord in place Review the factory set supply voltage and ampli fier configuration detailed on the label placed on the side of the amplifier see Figure 2 7 This configuration can be changed by the user See the Advanced Configuration section for more infor mation Figure 2 6 Closeup of AC Mains Outlet Figure 2 7 Sample of Configurations Setting Label 2 7 Start up Proced...

Страница 11: ...lifier will amplify the input signal If an amplifier is disabled using a Remote Standby application the amplifier will be placed in Standby mode both Ready and Standby LEDs will be lit To return the amplifier to Run mode release the Standby condition using the remote switch See the Applications section of this manual for more information on remote amplifier operation In multi amp systems that have...

Страница 12: ...us Indicators State of Operation Action Needed to Return to Run Mode Run Ready Standby Stop Run mode The amplifier s high voltage trans formers are energized and the unit will amplify the input signal Run mode is initiated by 1 the Enable push button or 2 when the amplifier powers up in Run mode factory default See the Advanced Configuration section for more information N A Run Ready Standby Stop ...

Страница 13: ...e placed in Standby mode when the Over Load indica tor lights To remedy the Over Load fault during operation turn down the level of the input signal until the Over Load indicator turns off To clear an Over Load fault condition when the amplifier is forced to Standby turn down the level of the input signal then push the Reset button Run Ready Standby Stop Fault Over Load Over Temp Over Voltage Over...

Страница 14: ...ot If the amplifiers remain in Standby mode the system is being held in Standby by remote control through the SIM Interlock I O connector Open the Enable Standby switch to clear this remote Standby condition and return the system to Run mode See the Applications section of this manual for more information on remote ampli fier operation Run Ready Standby Stop Run Ready Standby Stop System Not Ready...

Страница 15: ...d Over Temp Over Voltage Output Fault status This indicates that an Output Fault condition has occurred in the amplifier displaying the Fault sta tus and the system has been placed in Standby mode The Fault indicator will light under two condi tions 1 High frequency oscillation is causing high shoot through current or 2 An output transistor has shorted causing the output fault condition This fault...

Страница 16: ...the input signal from the system Allow the fans to run for about 5 minutes until the system automatically returns to Run mode If the system has been configured for Standby mode on Over Temp then the system will not automatically return to Run mode In that case push and hold the Reset button on any ampli fier displaying the Over Temp status until the Standby LED turns off then release the Reset but...

Страница 17: ...n the unbalanced BNC input connector is enabled When in the RIGHT position both unbal anced BNC and balanced Phoenix input con nectors are enabled The Input Select switch also functions as a Ground Lift switch for the Unbal anced BNC input connector If circulating currents ground loops 60 Hz Hum occur when using the unbalanced input move the Input Select switch to the right to lift the ground on t...

Страница 18: ...Access Panel built into the top cover Most configuration settings can be made through this Access Panel For your convenience a 2 Phillips screwdriver is provided in your Toolkit for use in this procedure IMPORTANT Before removing the Access Panel make sure the amplifier is turned off for at least 3 5 minutes and the AC mains are disconnected 1 Locate the Access Panel as shown in Figure 4 1 Make su...

Страница 19: ...l 4 2 2 Fixed Gain Variable Gain Setting The 7224 amplifier ships with an enabled Gain Control knob located on the amplifier front panel To disable the Variable Gain control and set for a Fixed Gain of 20 locate and unplug the red con nector from jumper J10 Then place a jumper on the left two pins at that location See Figure 4 4 4 2 1 Master Slave Setting To enable the 7224 amplifier for use as a ...

Страница 20: ...etwork See Figure 4 6 For more information on Controlled Current operation see the Applications section of this manual 4 2 5 Run Mode Stop Mode on Power Up Setting The 7224 amplifier will power up to Run Mode when jumper J11 is in the Left position default setting To cause the 7224 amplifier to enter Stop Mode on power up place jumper J11 in the Right position See Figure 4 7 In Controlled Current ...

Страница 21: ... the IOC Input Output Comparator Distortion Alert circuit The IOC Distortion Alert circuit continuously compares the input waveform to the output wave form When a distortion of more than 0 5 occurs the IOC circuit will activate The amplifier will re main in Standby Mode until the Reset switch on the front panel is pushed or a Reset signal is received on the Interlock I O Connector Once reset the a...

Страница 22: ...iven at the beginning of this Section to open the Configuration Access Panel The Power Supply Board is located to the right of the Main Board as shown in Figure 4 10 4 3 3 Changing Amplifier Voltage Potential The 7224 can be configured for High Current 90V or High Voltage 180V operation via user selectable plugs on the Power Supply Board Complete the following steps to change the ampli fier voltag...

Страница 23: ...ched remove the SIM card from the amplifier until it is completely clear from the card bay 4 Locate Bi Level Power Switch S1 a black three position switch at the rear of the card bay See Figure 4 14 5 Move Black switch to desired setting If neces sary use a pointed non metallic object such as a pen to help in moving the switch a Automatic Left b Low Middle c High Right 4 3 5 Selecting the Best Vol...

Страница 24: ...r Figure 5 1 maps the pins used for these applications For a detailed chart of all DB 25 pinouts see Appendix 1 Figure 5 1 Remote Status and Control Pinouts Figure 5 2 Remote Run Standby Monitor 5 1 1 Remote Run Standby Status Monitor Using the SIM BNC Interlock connector located on the back panel of the amplifier you can remotely monitor the Run Standby status of the amplifier Remote Run Standby ...

Страница 25: ...n amp is in OverTemp state transistor Q37 turns on and sources chassis ground as an output Do not ex ceed 20 milliamps An OverTemp condition will force the amp to Standby When the Standby Mode on Over Temp option is enabled on the amplifier a Reset com mand must be triggered via the front panel Reset button or a remote amplifier Reset command If the Standby Mode on Over Temp is not enabled the amp...

Страница 26: ... or OPTO tie OverVoltage Out PIN 24 to 24V source PIN 13 Signal Type DC Level when Asserted 24V Level when Deasserted 0V Note When amp is normal this pin is pulled to 24V through a 47 5K ohm resistor when amp is in Overvoltage state transistor Q29 turns on and sources chassis ground as an output Do not exceed 20 milliamps Reset from Standby Purpose Switch when thrown returns amp to Run condition a...

Страница 27: ...put Use a male 25 pin D Sub connector and high quality wire to build the desired circuits Remote Monitoring of Voltage Output Purpose Use a voltage meter to monitor output voltage Method Connect a voltage meter to monitor the output voltage being produced by the amplifier Connect across PIN 1 Amp Out and PIN 10 Sampled Common See Figure 5 5 Signal Type AC or DC Level when Asserted Can be greater t...

Страница 28: ...o be like the input waveform see Figure 5 9 5 2 Controlled Current Operation The procedures outlined in this section assume competence on the part of the reader in terms of amplifier systems electronic components and good electronic safety and working practices 5 2 1 Controlled Voltage vs Controlled Current Modes of Operation AE Techron 7224 amplifiers can be field config ured to operate as Voltag...

Страница 29: ...nsation setting may also be adjusted in the field The following section describes methods for determining and setting proper compensation when operating in Controlled Current mode 5 2 3 Controlling Compensation for CC Operation AE Techron 7224 amplifiers can be configured for either Controlled Voltage CV or Controlled Cur rent CC mode of operation When operating the amplifier in Controlled Voltage...

Страница 30: ...etting AE Techron 7000 Series amplifiers can be enabled with one of two compensation settings default RC network or custom RC network The required network can be selected via jumpers on the main board CC1 enables the default factory installed RC network while CC2 allows installation of a cus tom RC network Figure 5 10 describes the default RC circuit To select CC1 place jumper J5 in the UP posi ti...

Страница 31: ... of the system and the amplifier should not be turned on without the load being connected Figure 5 11 Custom Compensation Location After installing the components check to ensure that jumper J5 is correctly installed see STEP 4 then power up the amplifier without signal input To begin testing input a square wave with a fre quency of 100 Hz to 1 kHz or a squared pulse at a low level typically 0 25 ...

Страница 32: ...ase the value of R63 in series systems by 1 2 5 3 Multi amplifier Systems The 7224 amplifier may be used with other 7224 amplifiers to increase voltage or current Because the internal circuitry of a 7224 amplifier is not connected to chassis ground the amplifier is well suited for use in series or parallel with other 7724 amplifiers Up to three 7224 amplifiers may be configured in series and up to...

Страница 33: ...796 2 AMP 7224 3 AMP 7548 7796 3 AMP 7224 4 AMP and 7548 7796 4 AMP Parallel wiring kits include the DB 25 Inter lock cable for system communication BNC T con nectors and BNC patch cables for wiring parallel inputs through the BNC input connectors and the output wiring for connecting system amplifiers to the load The kits also include the wire s needed for wiring the parallel inputs through the Re...

Страница 34: ...High Current Mode PEAK OUTPUT RMS OUTPUT 40 mSec Pulse 20 Duty Cycle 5 Minutes 100 Duty Cycle 1 Hour 100 Duty Cycle 5 Minutes 100 Duty Cycle 1 Hour 100 Duty Cycle Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts 2 58 29 58 29 41 20 5 41 20 5 841 1 5 52 34 52 34 37 24 37 24 888 1 46 45 46 45 33 31 8 33 31 8 1049 Three 7224s in Series High Voltage Mode PEAK OUTPUT RMS OUTPUT 40 mSec...

Страница 35: ...e 20 Duty Cycle 5 Minutes 100 Duty Cycle 1 Hour 100 Duty Cycle 5 Minutes 100 Duty Cycle 1 Hour 100 Duty Cycle Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts 2 144 18 69 32 8 69 32 8 49 23 2 49 23 2 1136 1 122 30 57 54 4 57 54 4 40 38 5 40 38 5 1538 0 5 94 47 43 79 2 21 42 30 4 14 9 14 8 29 7 439 0 25 52 52 Two Paralleled 7224s High Current Mode PEAK OUTPUT RMS OUTPUT 40 mSec Pul...

Страница 36: ... 40 mSec Pulse 20 Duty Cycle 5 Minutes 100 Duty Cycle 1 Hour 100 Duty Cycle 5 Minutes 100 Duty Cycle 1 Hour 100 Duty Cycle Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts 4 158 39 2 158 39 2 158 39 2 112 27 7 112 27 7 3104 2 154 76 136 65 2 136 65 2 96 46 1 96 46 1 4425 1 124 124 108 102 8 61 58 76 72 7 43 41 1763 0 5 98 196 Four Paralleled 7224s Mid Level Mode PEAK OUTPUT RMS OU...

Страница 37: ...imiting circuits and special junction temperature simulation circuits using thermal feedback from the main heat sinks on the Output board Figure 6 1 Board Level Functional Block Diagram 6 2 AC Mains Power Power to the amplifier is connected through a 20 amp IEC type inlet connector with an integral EMI filter network on the back panel AC mains power is first routed through the front panel switch b...

Страница 38: ...or this task are described below Vacuum cleaner Damp cloth use water only or a mild soap diluted in water To ensure adequate cooling and maximum ef ficiency of the internal cooling fans the amplifier s front and rear grills should be cleaned periodically To clean the amplifier grills and filter complete the following steps 1 Turn completely down counter clockwise all level controls and turn the am...

Страница 39: ...ual Inspection Before attempting to troubleshoot the amplifier while it is operating please take time to complete a visual inspection of the internal components of the amplifier 1 To perform a Visual Inspection first turn the Breaker Switch to the Off O position 2 Disconnect the AC mains plug from the ampli fier 3 Wait three to five minutes for the Power Sup ply capacitors to discharge You can ver...

Страница 40: ...fuse and inspect Replace if necessary with same type fuse T1 6A L 250V 8 5 OverVoltage LED Lit The amplifier will protect itself from AC mains volt age that is 10 above the voltage indicated on the back panel If the AC mains voltage is more than 10 above the operating voltage reduce the AC mains voltage to the proper level When the line voltage condition is corrected the amplifier will automatical...

Страница 41: ...erTemp pulse may be too brief to observe 8 7 3 Resetting After OverTemp To reset the amplifier after an OverTemp has oc curred make sure fans are running then remove the input signal from the amplifier Allow the fans to run for five minutes and then push the Reset but ton to reset the amplifier 8 8 Fault LED is Illuminated The 7224 contains protection circuitry that disables the amplifier if an ou...

Страница 42: ...air It should be returned in its original packaging or a suitable alternative Replacement packaging materials can be purchased for a nomi nal fee Please send all service units to the following ad dress and be sure to include your Return Authori zation Number on the box AE Techron Inc Attn Service Department RMA 2507 Warren Street Elkhart IN 46516 ...

Страница 43: ...lock connector 20k ohm differential Unbalanced BNC connector 10k ohm single ended Fixed or variable gain Gain Voltage Mode 20 volts volt Current Mode 5 amperes volt Gain Linearity over input signal from 0 2V to 5V 7224 0 15 7224P 0 02 DC 0 05 AC Max Input Voltage 10 V balanced or unbalanced Common Mode Rejection 58 dB with 5 V input Display Control Status I O Front Panel LED Displays indicate Read...

Страница 44: ...de PEAK OUTPUT RMS OUTPUT 40 mSec Pulse 20 Duty Cycle 5 Minutes 100 Duty Cycle 1 Hour 100 Duty Cycle 5 Minutes 100 Duty Cycle 1 Hour 100 Duty Cycle Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts 16 158 9 8 158 9 8 158 9 8 112 6 9 112 6 9 773 8 154 19 136 16 136 16 96 11 5 96 11 5 1104 4 124 31 108 25 7 61 14 5 76 18 2 43 10 3 443 2 98 49 AC Specifications Mid Level Mode PEAK OUT...

Страница 45: ...24 OPERATOR S MANUAL SECTION 9 Figure 9 2 Frequency Response Figure 9 1 Voltage Potential vs Frequency Figure 9 4 Continuous Power vs Frequency Figure 9 5 Thermal Performance Figure 9 3 Noise vs Frequency Figure 9 6 DO 160 Section 18 2 AC Power Processing ...

Страница 46: ...ATOR S MANUAL SECTION 9 46 Figure 9 7 DC Current Over Time at 13 5 VDC Figure 9 8 DC Current Over Time 2 ohm Load Figure 9 9 DC Current Over Time 3 ohm Load Figure 9 10 DC Current Over Time 4 ohm Load Figure 9 11 DC Current Over Time Comparison with 4 ohm Load ...

Страница 47: ...dby Short PIN 4 of amplifier to Digital Ground PIN 17 using dry contact switch or optocoupler When closed places amplifier in Standby Multi amplifier Systems Simultaneous Enable or Disable of amplifiers Daisy chain Interlock PIN4 across amps if sharing the same Sampled Common power connections Optocoupler must be used for multi amps in series 5 Amp Ready Ready output of amplifier DC 0V 14V Normall...

Страница 48: ...ent will be same as Master 15 1 IN Differential Slave Input AC or DC Up to 200V peak 0V Only used in multiple amplifier con figurations Series mode Can accept output of PIN 1 Amplifier Output OR PIN 2 Sampled Common from Master device when in Slave mode 16 24V 24V Power Output DC 24V dc 30 mA max Used in status reporting applications See OverTemp PIN 11 Run PIN 12 Overload PIN 23 and Over Voltage ...

Страница 49: ...ervoltage output High AC line volt age DC 24V 0V When amp is normal this pin is pulled to 24V through a 47 5K ohm resistor when amp is in Overvoltage state this pin is grounded Do not exceed 6 milliamps Remote Signal of Overvoltage Condition LED when lit signals Overvoltage condition Use a 6mA series re sistor of 4 7K ohm for LED or OPTO tie to 24V source PIN 13 25 Reset Reset DC 15V 0V Tie to PIN...

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