Related Manuals for AE Techron 8504
Summary of Contents for AE Techron 8504
- Page 1 8504 Operator’s Manual Wide-Bandwidth, High-Power Digital Amplifier 574.295.9495 | www.aetechron.com 2507 Warren Street, Elkhart, IN 46516...
- Page 2 +1 574-295-9495 Elkhart, IN 46516 lshank@aetechron.com This Declaration of Conformity is issued under the sole responsibility of AE Techron, Inc., and belongs to the following product: Equipment Type: Industrial Power Amplifiers Model Name: 8504 EMC Standards: EN 61326-1: 2013 – Electrical Equipment for Measurement, Control and Laboratory Use – Industrial Level & Performance, Group 1, Class A, Criteria A CISPR 16-2-3 –...
- Page 3 This includes any damage to ITEMS EXCLUDED FROM WARRANTY another product or products resulting from such a This AE Techron Warranty is in effect only for failure defect. of a new AE Techron product which occurred within the Warranty Period.
-
Page 4: Table Of Contents
5 Advanced Configuration .......................13 5.1 DIP Switch Configurations ....................14 5.2 Custom Compensation ......................16 6 Applications ..........................17 6.1 Emergency Standby Switch or Safety Interlock ..............17 6.2 Controlled-Voltage vs. Controlled-Current Modes of Operation ..........17 6.3 Driving Reactive Loads .......................20 6.4 8504 Multi-amp Systems .....................20 7 Maintenance ..........................29 7.1 Clean Amplifier Filter and Grills ...................29 8 Troubleshooting ...........................30 8.1 Introduction & Precautions ....................30 8.2 No Signal ..........................30 8.3 No LEDs Illuminated......................30 8.4 ... -
Page 5: Introduction
8504 OPERATOR’S MANUAL – SECTION 1 Figure 1.1 – 8504 Front Panel 1 Introduction Congratulations on your purchase of the 8504 Performance Overview digital power amplifier. 8504 amplifiers are 350Vp, low-noise, DC-to-50-kHz switch -mode amplifiers. DC - 50 kHz Bandwidth They are fast enough for DC automotive dropout testing and capable of AC voltages required for 0 to 350 VDC Voltage 0 to 250 V ISO 61000 and Aviation testing. Plus, they have low enough noise and distortion specifications to Current 60 A be the reference power source in power quality measurements. Distortion <0.2% 1.1 Features Power 4 kW Wide Bandwidth and Flexible Apparent Power 20 kVA The 8504 amplifier is capable of reproducing AC, ... -
Page 6: Amplifier Unpacking And Installation
8504 OPERATOR’S MANUAL – SECTION 2 2 Amplifier Unpacking and Installation The 8504 amplifier is a precision instrument that 2.3 Installation can be dangerous if not handled properly. Lethal The 8504 amplifiers are packaged in a rugged voltages are present in both the AC input supply powder-coated chassis. This chassis is 3U (rack and the output of the amplifier. For this reason, units) tall, and has rack “ears” on each side of the safety should be your primary concern when you front panel for mounting to a standard EIA (Elec- setup and operate this amplifier. tronic Industries Association) rack. Use standard rack mounting hardware to mount the ampli- 2.1 Safety First fier. Use nylon washers if you wish to protect the Throughout this manual special emphasis is powder-coat finish on the front of the amplifier. placed on good safety practices. The following Optionally, the amplifier can be placed on a graphics are used to highlight certain topics that bench top; please keep in mind that the protective require extra precaution. powder-coating can be scratched when placed on other equipment or on a bench top, especially WARNING when there is dirt present. To protect the finish, a set of rubber feet is included in the toolkit that can WARNING alerts you to hazards that be installed on the bottom of the amplifier. -
Page 7: Connecting The Load
8504 OPERATOR’S MANUAL – SECTION 3 Figure 3.1 – 8504 Back Panel are operating correctly. Once proper operation is Be sure to install the output safety cover after wir- confirmed, refer to the Applications section of this ing the output connections. See Figure 3.3. manual for instructions on configuring and operat- ing your amplifier in Controlled-Current mode. 3.1 Connecting the Load 3.1.1 Preparation and Cautions Before connecting the amplifier, make sure the AC power is disconnected. Always use the appropriate wire size and insula- tion for the maximum current and voltage expected at the output. Never connect the output of the amplifier to any other model amplifier, power sup- Figure 3.2 – Connecting the Load ply, signal source, or other inappropriate load; fire can result. WARNING ELECTRIC SHOCK HAZARD. -
Page 8: Other Dip Switch Settings
8504 OPERATOR’S MANUAL – SECTION 3 3.4 Monitor and Sense Ports The amplifier provides five additional back-panel ports: Current Monitor (BNC connector) • Voltage Monitor (BNC connector) • Multi-amp Connectors (9-pin dSub connectors, • two total) Remote Sense Port (2-pin terminal block con- • nector. See the Applications section of this manual for information on using these ports Figure 3.4 – Wiring for Unbalanced or Balanced WARNING Input Connector The back-panel DIP switch #1 can be used to en- The risk of lethal ELECTRICAL SHOCK able/disable the unbalanced input connector, and exists when connecting AC mains! Disconnect the source before connect- DIP switch #2 can be used to enable/disable the ... - Page 9 8504 OPERATOR’S MANUAL – SECTION 3 Do not disconnect or disable the protective grounding connection. Doing so causes a poten- tial electrical shock hazard. Connect the AC supply to the three-terminal bar- rier strip located on the amplifier back panel (see Figure 3.6 and 3.7). Install AC inlet cover prior to connecting to the sup- ply source. See Figure 3.8. Figure 3.6 – Closeup of AC Mains Barrier Strip WARNING ELECTRIC SHOCK HAZARD. AC supply potentials can be lethal. Inlet cover must remain installed at all times to protect against HAZARDOUS LIVE VOLTAGES Start-up Procedure 1.
-
Page 10: Amplifier Operation
8504 OPERATOR’S MANUAL – SECTION 4 4 Amplifier Operation To release the amplifier from Standby mode: 1. High/Low Line error: Clear the over- or un- 4.1 Front-Panel Controls and Indicators der-voltage condition. The amplifier will resume This section provides an overview of Front-Panel operation when the input voltage is brought controls and indicators found on the 8504. Refer fo within the operating range of the amplifier. Figure 4.1 for component locations. 2. Overtemp condition: Remove the input signal 4.1.1 Standby-Run Switch from the amplifier and leave the amplifier with The Standby-Run switch controls the power to the the Standby-Run switch in the Run position amplifier’s high-voltage transformers. Switch to and with the fans operating to cool the ampli-... - Page 11 8504 OPERATOR’S MANUAL – SECTION 4 Overload (clipping): The indicator will flash when the temperature sensors detect a condition amber intermittently. When the indicator flashes that would damage the amplifier. If the Overtemp amber, this indicates that the output of the system pulse is extremely short, as in the case of defec- could not follow the input signal due to voltage tive wiring or switches, this indicator may be lit too or current limits. The amber Overload indicator briefly to observe. will begin flashing when distortion is greater than To remove the amplifier from Standby and return 0.1%. it to normal operation after an Overtemp fault has occurred, make sure the Standby-Run switch 4.1.4 High/Low Line Indicator is in the Run position and the amplifier fans are This amber indicator will illuminate, and the ampli- running, and then remove the input signal from fier will be placed in Standby if the detected AC the amplifier. Allow the fans to run until the ampli- mains voltage is outside of the operable range of fier automatically returns to Run mode. See the the amplifier (±10%). This can occur if the ampli- Troubleshooting section for information on iden- fier’s back-panel breaker is not in the on position tifying and correcting the cause of an Overtemp (left), or if the AC supply into the amplifier is higher or lower than the operable range. ...
-
Page 12: Back-Panel Controls & Connectors
8504 OPERATOR’S MANUAL – SECTION 4 Remote Sense Port – This 2-pin terminal block Back-Panel Controls & Connectors connector provides a sense line for voltage correc- This section provides an overview of Back-Panel tion. The Remote Sense port can be useful when controls and connectors found on the 8504. Please the voltage at the load must be precise. If the refer to Figure 4.2 for component locations. cables connecting the amplifier and the load are very long or under-sized, the voltage drop between AC Power Input – Three-terminal barrier strip the amplifier and load can be corrected. connector. Connect to the Remote Sense Port using high- Breaker– Protects the amplifier from voltage surge quality shielded wire and the supplied terminal on the AC power input. block connector. Connect the shield to a 1/4-inch Output Terminals – Connect output lines from the ring terminal, then secure to the grounding screw load to this pair of high-current output terminals ... -
Page 13: Advanced Configuration
Select and enable a synthetic impedance from • Select between two compensation networks for • 0.125 ohms to 0.875 ohms. Controlled Current operation: CC1, designed 8504 Default DIP Switch Settings Red = Default DIP SWITCH SETTINGS DOWN 1 UNBALANCED INPUT 2 BALANCED INPUT 3 DC SERVO 4 OPERATION MODE 5 COMPENSATION NETWORK 2... -
Page 14: Dip Switch Configurations
5. Provide appropriate Compensation for the load, using either Compensation Network 1 (SW#6) or Compensa- unused input connector can help to minimize noise tion Network 2 (SW#5). If neither compensation network is adequate for your load, contact AE Techron Technical going into the amplifier. Support. 6. Turn off the amplifier immediately if oscillation oc- SW#2: Balanced Input curs. - Page 15 DOWN position, a 30-Hz high-pass filter on the inputs prevents the transmission of DC signal. tions section of this manual. If neither of the avail- able RC networks is suitable for your application, SW#9 – SW#16: Gain please contact AE Techron Technical Support. The amplifier gain can be adjusted from 0.16 to 40 SW#6: Compensation Network 1 in increments of 0.16 using switches 9 through 16. When the 8504 amplifier is used in Controlled- All switches are additive and provide the following Current mode, the current control loop is tuned values toward the total Gain amount. with an RC network. The Compensation Network SW#9 = 20.00 SW#13 = 1.25 1 switch enables the factory default RC network. ...
-
Page 16: Custom Compensation
The synthetic impedance can be added in incre- NOTE: If all four current-limit DIP switches are set ments of 0.125 ohms by setting one or more of the in the DOWN position, the amplifier’s output cur- synthetic impedance switches in the UP position. rent will be limited to 10A. Refer to Figure 5.2 for all available synthetic im- pedance switch settings. 5.2 Custom Compensation If you wish to change one of the two standard SW#21 - #24: Current Limit compensations to a custom compensation, please These four switches control the current-limit set- contact AE Techron Technical Support for specific tings for the amplifier. When all four switches are instructions. Information subject to change 96-8005353_02-17-2022... -
Page 17: Applications
8504 OPERATOR’S MANUAL – SECTION 6 6.2 Controlled-Voltage vs. Controlled- 6 Applications Current Modes of Operation 6.1 Emergency Standby Switch or AE Techron 8504 amplifiers can be field-configured Safety Interlock to operate as Voltage Amplifiers (Voltage-Con- The two 9-pin D-Sub connectors on the amplifier trolled Voltage Source) or as Transconductance back panel (Interlock A and Interlock B) can be Amplifiers (Voltage-Controlled Current Source). used to remotely place the amplifier in Standby The mode selection is made via the back-panel mode. This can provide a valuable safety feature, DIP switch #4. See the Advanced Configuration such as in creating a safety interlock for a cabinet section for more information. in which one or more 8504 amplifiers are installed When configured as a Controlled-Voltage source or wiring an emergency stop switch to the cabinet (voltage amplifier), the amplifier will provide an ... - Page 18 One of the two compensation settings that can be enabled with DIP switch settings will be sufficient Figure 6.3 – Input to Output Comparison, for most applications. If you determine that neither Controlled-Current Operation Compensation Network 1 or Compensation Net- work 2 will be adequate for your application and Note that, in Controlled-Current mode, the ampli- load, please contact AE Techron Technical Sup- fier gain is halved to a maximum of 20A/V. port for additional compensation options. 6.2.1 Safety and Operation Consider- ations for Controlled Current Operation The following section describes methods for determining proper compensation setting for your When an AE Techron amplifier is configured as application when operating in Controlled-Current a Controlled-Current source, care needs to be ...
- Page 19 1 for your application. If your load inductance is between 1 mH and 5 mH, and your load resis- If your load inductance falls outside of these tance is less than 5 ohms, then you can likely use ranges, or if your load resistance is greater than Compensation Network 2 for your application. 5 ohms, please contact AE Techron Technical (See Figure 6.4). These compensation networks Support for assistance. Figure 6.4 – Selectable factory-installed compensation networks STEP 4: Verifying Operation After selecting and enabling your choice of Com- Remember the load you are connecting is a pensation Network, check to ensure that the ...
-
Page 20: Driving Reactive Loads
8504 OPERATOR’S MANUAL – SECTION 6 transition edges indicates compensation problems. To begin testing, input a square wave with a fre- (See Figure 6.5.) quency of 100 Hz to 1 kHz, or a squared pulse at a low level (typically 0.25 to 2.0 volts). A limited-rise- If a change in compensation is necessary, please time, repetitive pulse of low duty cycle is preferred. contact AE Techron Technical Support for as- sistance. DO NOT operate your amplifier in Con- Observe the output current through a current trolled Current mode without proper compensation. monitor or current probe. Look for clean transition edges. The presence of ringing or rounding on the Figure 6.5 – Compensation Effects on Waveform While it is possible to operate a multi-amp system 6.3 Driving Reactive Loads in either Controlled Voltage or Controlled Current Like all switching amplifiers, 8504 amplifiers are modes of operation, multi-amp operation in Con- able to reuse the energy returned from reactive trolled Current mode requires additional configura- loads. Unlike purely resistive loads, loads with tion of the equipment. Please contact AE Techron some reactance (either capacitive or inductive) will Tech Support for assistance with configuring a ... - Page 21 8504 Follower DIP Switch Settings Parallel Configuration 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 KEY FOR DIP SWITCH SETTINGS:...
- Page 22 8504 OPERATOR’S MANUAL – SECTION 6 2. Place the Follower amplifier on top of the tion of at least three digits. Both testing methods Master amplifier, and then connect the bus are provided below. bar (from the 8504 Multi-amp Kit) between the Testing Using an Oscilloscope GND output terminals of the Master and Fol- 1. Connect from a signal generator to the BNC or lower amplifiers. See Figure 6.8. WECO signal input connector on the back panel A. Remove the back-panel output covers from of the Master amplifier. Note that if the WECO both amplifiers. connector is used for signal input, DIP switch #1 B. Remove the 3/8-inch nuts from the GND on the Master amplifier should be placed in the terminals on both amplifiers. DOWN (OFF) position and DIP switch #2 should C. Install the bus bar across the GND termi- be placed in the UP (ON) position. nals of the Master and Follower amplifiers. 2. Turn down the level of your signal source. D. Replace the 3/8-inch nuts on both output 3. Make sure the back panel breaker switch on terminals. IMPORTANT: Torque the nuts both amplifiers is in the ON position, and then ...
- Page 23 0.5V, 1. Output Terminals: Use red, 8AWG cable DO NOT complete the system setup. Contact to build a “Y” cable with legs of equal length AE Techron Technical Support for assistance. (within 1/4-inch). IMPORTANT: The legs of this output cable must be of equal length Testing Using a Floating Digital Multimeter for proper system operation.
- Page 24 8504 OPERATOR’S MANUAL – SECTION 6 TWO 8504 AMPLIFIERS PARALLELED (CRITICAL WIRE LENGTHS) OUTPUT OUTPUT AMP #2 FOLLOWER OUTPUT OUTPUT AMP #1 MASTER Both wires of length “A” should be of the same length ±1/4 inch. Ÿ Wire lengths “A” and “B” may or may not be of the same length.
- Page 25 1. Make sure both amplifiers are disconnected amplifier, continue with the system setup. IMPORTANT: If current exceeds 2A (0.1V) from AC power. from either amplifier, DO NOT complete the 2. Connect the black (ground) output cable to the system setup. Contact AE Techron Techni- ground terminal of your load. 3. Connect “Y” end of the red (positive) output cal Support for assistance. 8. Slowly raise the input voltage from 100 mV to cable to the positive terminal of your load.
- Page 26 8504 OPERATOR’S MANUAL – SECTION 6 8504 Follower DIP Switch Settings Push/Pull Configuration 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 KEY FOR DIP SWITCH SETTINGS: 8504 Master DIP Switch Settings REQUIRED Push/Pull Configuration...
- Page 27 8504 OPERATOR’S MANUAL – SECTION 6 8504 PUSH/PULL SYSTEM 8504 AMPLIFIERS 8504 AMP #2 - FOLLOWER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 AMPLIFIER OUTPUTS OUTPUT 8504 AMP #1 - MASTER...
- Page 28 8504 OPERATOR’S MANUAL – SECTION 6 amplifiers will return automatically to Run mode. to determine the current status and the necessary remedies to return the system to operational status If the High/Low-Line indicator does not turn off or if the system does not return from Standby, one when a fault condition occurs. or both amplifiers may require servicing. See the Run/Standby Indicators Troubleshooting section in this manual for more When each amplifier in a multi-amp system is information. energized, the amplifier will be placed in Standby mode (Run/Standby LED solid amber) and remain Overtemp: Both amplifiers monitors the tempera- ture inside its high-voltage transformers and in in Standby mode until both amplifiers in the system the output stage heat sinks. The amber Overtemp have been energized. The system will automati- indicator will light and the system will be placed cally proceed to Run mode when both amplifiers in Standby mode when the temperature sensors ...
-
Page 29: Maintenance
8504 OPERATOR’S MANUAL – SECTION 7 To ensure adequate cooling and maximum ef- 7 Maintenance ficiency of the internal cooling fans, the amplifier’s Simple maintenance can be performed by the user front and rear grills should be cleaned periodically. to help keep the equipment operational. The fol- To clean the amplifier grills and filter, complete the lowing routine maintenance is designed to prevent following steps: problems before they occur. See the Trouble- 1. Disconnect the amplifier from its power source shooting section, for recommendations for re- via external mechanical disconnect or breaker. storing the equipment to operation after an error 2. The front grill is secured to the amplifier front condition has occurred. panel by magnets. Pull out on the grill to re- Preventative maintenance is recommended after lease it from the front panel. the first 250 hours of operation, and every three 3. Remove the filter located behind the front grill. months or 250 hours thereafter. If the equipment 4. Using a vacuum cleaner, vacuum the front ven- environment is dirty or dusty, preventative mainte- tilation grill, the grill filter, and the back ventila- nance should be performed more frequently. tion exit grill. ... -
Page 30: Troubleshooting
8504 OPERATOR’S MANUAL – SECTION 8 8 Troubleshooting First, check to make sure the amplifier’s back- panel breaker is turned on. Next, check the voltage 8.1 Introduction & Precautions level of the AC supply. If the AC mains voltage is more than 10% outside the range of the operating This section provides a set of procedures for voltage, increase or reduce the AC mains voltage identifying and correcting problems with the 8504 to the proper level. When the line voltage condition amplifier. Rather than providing an exhaustive and is corrected, the amplifier will automatically return detailed list of troubleshooting specifications, this to Run mode. If the amplifier does not reset, the section aims to provide a set of shortcuts intended amplifier’s internal transformers may need to be to get an inoperative amplifier back in service as replaced. Please see the Factory Service infor- quickly as possible. mation at the end of this section. The procedures outlined in this section are direct- ed toward an experienced electronic technician; 8.5 Run/Standby LED Remains Amber it assumes that the technician has knowledge of ... -
Page 31: Fault Led Is Illuminated
Try resetting the Fault condition only once. If the Fault condi- information at the end of this section. tion does not clear after one reset, STOP. Contact AE Techron Support for further An OverTemp condition places the amplifier in assistance. Repeated resetting can dam- Standby mode. If the OverTemp pulse is ex- age the amplifier. - Page 32 8504 OPERATOR’S MANUAL – SECTION 8 Appendix A: Gain DIP Switch Settings Use this chart to determine the required settings For Controlled-Current mode, divide each gain for DIP switches 9 through 16 to achieve the am- value by 2. plifier gain you need for your application. Note: All switches ON = Gain of 39.85, all switches OFF = gain of 0 (signal will not be amplified). ON = DIP Switch UP OFF = DIP Switch DOWN SW#9 SW#10 SW#11 SW#12 SW#13 SW#14 SW#15 SW#16 Gain 39.85 39.69 39.54 39.38 39.22 39.06 38.91 38.75 38.60 38.44 38.29 38.13 37.97 37.81 37.66 37.50 37.35...
- Page 33 8504 OPERATOR’S MANUAL – SECTION 8 ON = DIP Switch UP OFF = DIP Switch DOWN SW#9 SW#10 SW#11 SW#12 SW#13 SW#14 SW#15 SW#16 Gain 33.29 33.13 32.97 32.81 32.66 32.50 32.35 32.19 32.04 31.88 31.72 31.56 31.41 31.25 31.10 30.94 30.79 30.63 30.47 30.31 30.16 30.00 29.85 29.69 29.54 29.38 29.22 29.06 28.91 28.75...
- Page 34 8504 OPERATOR’S MANUAL – SECTION 8 ON = DIP Switch UP OFF = DIP Switch DOWN SW#9 SW#10 SW#11 SW#12 SW#13 SW#14 SW#15 SW#16 Gain 25.63 25.47 25.31 25.16 25.00 24.85 24.69 24.54 24.38 24.22 24.06 23.91 23.75 23.60 23.44 23.29 23.13 22.97 22.81 22.66 22.50 22.35 22.19 22.04 21.88 21.72 21.56 21.41 21.25 21.10...
- Page 35 8504 OPERATOR’S MANUAL – SECTION 8 ON = DIP Switch UP OFF = DIP Switch DOWN SW#9 SW#10 SW#11 SW#12 SW#13 SW#14 SW#15 SW#16 Gain 17.97 17.81 17.66 17.50 17.35 17.19 17.04 16.88 16.72 16.56 16.41 16.25 16.10 15.94 15.79 15.63 15.47 15.31 15.16 15.00 14.85 14.69 14.54 14.38 14.22 14.06 13.91 13.75 13.60 13.44...
- Page 36 8504 OPERATOR’S MANUAL – SECTION 8 ON = DIP Switch UP OFF = DIP Switch DOWN SW#9 SW#10 SW#11 SW#12 SW#13 SW#14 SW#15 SW#16 Gain 10.31 10.16 10.00 9.85 9.69 9.54 9.38 9.22 9.06 8.91 8.75 8.60 8.44 8.29 8.13 7.97 7.81 7.66 7.50 7.35 7.19 7.04 6.88 6.72 6.56 6.41 6.25 6.10 5.94 5.79...
- Page 37 8504 OPERATOR’S MANUAL – SECTION 8 ON = DIP Switch UP OFF = DIP Switch DOWN SW#9 SW#10 SW#11 SW#12 SW#13 SW#14 SW#15 SW#16 Gain 2.66 2.50 2.35 2.19 2.04 1.88 1.72 1.56 1.41 1.25 1.10 0.94 0.79 0.63 0.47 0.31 0.16 Information subject to change 96-8005353_02-17-2022...