The information in this document is subject to change without notice. Chroma ATE INC. makes no warranty of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Any recommendations made by Chroma for use of its products are based upon tests believed to be reliable, but Chroma makes no warranty of the results to be obtained. This warranty is in lieu of all other warranties, expressed or implied, and no representative or person is authorized to represent or assume for Chroma any liability in connection with the sale of our products other than set forth herein.
“ ” indicates that the level of the specified chemical substance exceeds the threshold level specified in the standards of SJ/T-11363-2006 and EU 2005/618/EC. Chroma is not fully transitioned to lead-free solder assembly at this moment; however, most of the components used are RoHS compliant.
Failure to comply with these precautions or specific WARNINGS given elsewhere in this manual will violate safety standards of design, manufacture, and intended use of the instrument. Chroma assumes no liability for the customer’s failure to comply with these requirements.
Safety Symbols DANGER – High voltage. Explanation: To avoid injury, death of personnel, or damage to the instrument, the operator must refer to an explanation in the instruction manual. Protective grounding terminal: To protect against electrical shock in case of a fault. This symbol indicates that the terminal must be connected to ground before operation of equipment.
Revision History The following lists the additions, deletions and modifications in this manual at each revision. Date Version Revised Sections Aug. 2009 1.0 Complete this manual. Aug. 2009 1.1 Add a NOTICE in the section of “Front Panel” under the chapter of “General Information.”...
Programmable AC Source 61511/61512 User’s Manual Table of Contents General Information ..................1-1 Introduction ......................1-1 Key Features......................1-1 Specifications ......................1-1 Names of Parts ....................1-4 1.4.1 Front Panel ....................1-4 1.4.2 Rear Panel ....................1-6 Installation ......................2-1 Initial Inspection....................2-1 Preparation for Use....................2-1 Requirements for Input Power ................2-1 2.3.1...
Page 10
Programmable AC Source 61511/61512 User’s Manual 3.4.4 Power ON Status ..................3-32 3.4.5 Protection ....................3-33 3.4.6 Others ......................3-34 3.4.7 Calibration....................3-36 3.4.8 System Information ...................3-36 3.4.9 Factory Default..................3-37 PHASE Function Key ..................3-37 3.5.1 3_Phase Mode ...................3-37 3.5.2 1_Phase Mode ...................3-38 CURSOR Function Key ..................3-38 LOCK Function Key ..................3-39...
Page 11
Programmable AC Source 61511/61512 User’s Manual Remote Operation .....................9-1 Introduction ......................9-1 9.1.1 USB Interface....................9-1 9.1.2 GPIB Interface.....................9-1 9.1.3 RS-232C Interface..................9-2 9.1.4 Ethernet Interface ..................9-2 Introduction to Programming ................9-3 9.2.1 Conventions....................9-3 9.2.2 Numerical Data Formats ................9-3 9.2.3 Boolean Data Format ..................9-3 9.2.4...
Local operation by the keypad on the front panel Remote operation via GPIB or RS-232C or USB interface Remote control a terminal on front or rear panel using the Chroma Digital Controller A615101 (optional) Protection against over power, over current, over temperature and fan failure...
Page 14
Programmable AC Source 61511/61512 User’s Manual Model 61511 61512 AC OUTPUT RATING Single Phase Power 12K VA 18K VA 3-Phase Power 12K VA 18K VA Power per Phase 4K VA 6K VA VOLTAGE Range 150V/300V/Auto Output Voltage 0~150V / 0~300V Accuracy 0.2%+0.2%F.S.
Page 15
General Information CURRENT (per phase) Range 8A/32A/128Apeak 12A/48A/192Apeak Peak per Phase 128A 192A Accuracy (rms) 0.4%+0.3% F.S. Accuracy (peak) 0.4%+0.6% F.S. Resolution 0.006A / 0.025A / 0.1A POWER Accuracy 0.4%+0.4% F.S. Resolution 0.1 W OTHERS Efficiency 0.75 (Typical) 1163×546×700 mm 1163×546×700 mm Size (H×W×D) 45.78×21.5×27.56 inch...
Programmable AC Source 61511/61512 User’s Manual Names of Parts 1.4.1 Front Panel Figure 1-1 Front Panel Item Symbol Description Display: The 6.5” LCD displays the configuration, output setup, and measurement results. Indicator LED: It is the Power On indicator surroounding the rotary knob showing the activation status.
Page 17
Indicator: It refers to the description on screen for parameter and function setting. : It confirms the setting of parameter. ENTER Remote Control Terminal: It can work with Chroma Digital REMOTE CONTROL Controller A615101 (optional) for remote control. Table 1-1 Front Panel Description NOTICE To extend the product life of output relay, it will delay 50ms for release after pressing QUIT.
Programmable AC Source 61511/61512 User’s Manual 1.4.2 Rear Panel www.valuetronics.com...
Page 19
General Information Figure 1-2 Rear Panel Item Symbol Description Rear Panel Output It includes Ext.V/TTL Remote Control GPIB and USB…etc. Interface It has the input/output terminal. The connector inputs power I/O Terminal Case source from the mains (3-phase power) and outputs power source to the UUT.
Page 20
Programmable AC Source 61511/61512 User’s Manual Input Connecting It connects the mains to AC Source as input. Terminal Output Connection It connects to UUT for output. Terminal I/O Cable Secure It secures the input/output connection cable. Strip Table 1-2 Rear Panel Description...
190-250 V, (Delta: L-L; Y: L-N) or 329-433 V , 3-phase 5-wire Y Input Frequency 47-63 Hz 61511 Δ: 80A, Y: 70A Maximum Current 61512 Δ: 120A, Y: 90A WARNING The AC Source may be damaged if the input voltage exceeds the configured range.
Page 22
Circuit Breaker configured for △ type needs to be 220Vac/80A (61511) & 120A (61512) at least. 3. If the input wiring selection is 380V 3~ (Y type) Max 70A/Phase, the specification of Circuit Breaker configured for Y type needs to be 380Vac/70A (61511) & 90A (61512) at least. www.valuetronics.com...
Installation Figure 2-2 3-Phase Power Input Connection (Y Connection) 190-250 V Figure 2-3 3-Phase Power Input Connection (Delta Connection) 190-250 V NOTICE Please be aware of the color distinction of insulation tube or the wire before connecting the power wire. The black insulation tube or power wire is used for L1, L2 and L3, the blue insulation tube or power wire is used for NEU while the green insulation tube or power wire is used for GROUND.
Programmable AC Source 61511/61512 User’s Manual NOTICE The output terminal labeled “L” is the “+” terminal and the output terminal labeled “COM/N” is the “-” terminal when output voltage contains DC composition. WARNING For propoer ventilation, the hardware should be placed at least 1 meter distance from the device front and rear panel.
Installation I/O Wire Tied Up Strip Figure 2-5 Input/Output Wire Securing Diagram Power On Procedure CAUTION Before turning on the instrument, all protective earth terminals, extension cords and devices connected to the instrument must be connected to a protective earth ground. Any interruption of the protective earth grounding may cause potential electric shock hazard that could result in personal injury.
Do not use any corrosive liquid to avoid damaging the chassis. Use a damp cloth with soap and water or a soft detergent to clean the LCD front panel. Please send it back to the distributors or agents of Chroma for internal cleaning. Do not open the chassis cover arbitrarily Common Environment Conditions 1.
Local Operation Local Operation Introduction The AC Source can be configured to operate in local or remote mode. The remote mode operation is through a remote GPIB or RS-232C interface as described in Chapter 9. This section describes the operation in local mode using the keypad on the front panel for data entry and test.
Page 28
Programmable AC Source 61511/61512 User’s Manual CONFIGuration Main Page (Output & Meas. Setting) Output More Setting Interface GPIB Address Measurement Setting RS232 Parity Waveform Viewer RS232 Baudrate Remtote Inhibit Limitation External Vref Ext.Vref Control Output Mode Control Method Style Default...
Local Operation Figure 3-2 MAIN PAGE (Output Setting & Measurement) When the AC Source is turned on and finished the self test, the screen displays the MAIN PAGE (3_Phase Mode/1_Phase Mode). A line on the screen shows the output setting. The default output setting can be set by the Power ON Status (see 3.4.4) under the CONFIG function key.
Page 30
Programmable AC Source 61511/61512 User’s Manual On top of the screen, the range displayed 300V is the Range status (see 3.3.1.2). There are 3 Ranges 150V Range 300V Range AUTO Range The definition of output parameters: : AC output voltage in Volts : Output frequency in Hertz.
Local Operation 3.3.1 OUTPUT : More Setting Press OUTPUT: More Setting in the MAIN PAGE (3_Phase Mode/1_Phase Mode) (see section 3.3), a line of output functions will appear at the bottom of the screen as described below. 3.3.1.1 Coupling Output Mode (AC+DC, AC, DC) There are 3 types of AC Source output: AC+DC, AC and DC.
Page 32
Programmable AC Source 61511/61512 User’s Manual NOTICE Since the AC Source does not have as many capacitors as the common DC Power Supply, some voltage fluctuations and transient load characters are not the same. This AC Source is able to provide positive and negative voltage without changing the output connector. The output capacitance cannot exceed 20uF as it may cause the device to be damaged due to unstable output.
Local Operation 4. The output has DC bias that is smaller than 15mV@150V range (temperature coefficient is 2.5mV/°C typical) or smaller than 30mV@300V range (temperature coefficient is 5mV/°C typical.) 3.3.1.2 Range The AC Source has full scale voltage ranges of 150 V, 300 V and AUTO. Users can set Range by the function OUTPUT: More Setting.
Programmable AC Source 61511/61512 User’s Manual 3.3.1.3 Setting Three Phase Output Press Three Phase Setting to enter into the function as shown below. Edit: All and Each. Press Edit to set “Each” or “All” for 3-phase output voltage limit. Sequence: Positive and Negative.
Page 35
Local Operation Three Phases: Independ, Same Freq and Balance. Press Three Phases to set the relationship among the AC Source 3-phase output voltage, which are Independ, Same Freq and Balance. Following lists the procedure to set the same frequency for 3-phase voltage output. 1.
Page 36
Programmable AC Source 61511/61512 User’s Manual When 3-phase balance is in use, the user may set the output voltage to be Phase Volt or Line Volt. Below is the procedure for setting the 3-phase voltage output to 3-phase balance. 1. Press Three Phases on the right.
Page 37
Local Operation Phase re-lock is used to lock the phase again. Since the output voltage and frequency are set separately when the AC Source is in 3-phase mode, users can set the 3-phase for different frequency output. Assuming the 3-phase output frequencies are varied and users set them to the same when the phase re-lock function is disabled, the phase difference of the 3-phase output does not return to default (each phase difference is 120°) as Figure 3-3 shows.
Programmable AC Source 61511/61512 User’s Manual 3.3.1.4 Output Degree The AC Source can control the degree of the waveform during output or when stopping the output. In MAIN PAGE (3_Phase Mode/1_Phase Mode) (see 3.3) press OUTPUT : More Setting on the right to set ON Degree and OFF Degree.
Local Operation 1. Move the cursor to “Vac S/R = ” command line. 2. Press to change the value to “0.2”. ENTER 3. The cursor moves to “F S/R =” command automatically, press ENTER 4. The cursor moves to “Vdc S/R =” command automatically, press ENTER NOTICE 1.
Programmable AC Source 61511/61512 User’s Manual Following lists the procedure for setting the output voltage to 3-phase balance with 120 degree phase difference among the 3 phases. Move the cursor to “Phase angle 1-2 = ” command line. Press ENTER Move the cursor to “Phase angle 1-3 = ”...
Page 41
Local Operation Turn the RPG to select “SINE” and press ENTER Users can press “View Waveform” on the right to view the set waveform. Follow the steps below to set the A waveform of 3-phase to clipped sine with a total harmonic distortion of 35%.
Programmable AC Source 61511/61512 User’s Manual NOTICE Clipped sine waveform can be programmed via “Amplitude” or “Total Harmonic Distortion”. The amplitude range is from 0 to 100% (100%: without clipping) while the Total Harmonic Distortion range is from 0 to 43% (0%: without distortion.) User defined waveform needs to be defined by and downloaded from the remote PC.
Page 43
Local Operation Follow the steps below to set the output impedance Zo Program = Enable, R = 1.0Ω, and L = 1.0mH: Press Zo Program at the bottom. Turn RPG to switch to “Enable” and press ENTER The cursor moves to “Zo_R = ” command line automatically. Press , and to change Zo_R to “1.0Ω.”...
Programmable AC Source 61511/61512 User’s Manual NOTICE When Zo Program = Enable, the AC Source uses current feedback to reprogram the output waveform to meet the setting. However, the output impedance is the AC Source’s original reading if Zo Program = Disable.
Page 45
Local Operation Below is the procedure to the 2 measurement item from I to Iac in 1 phase mode. Press Measurement Setting on the right in MAIN PAGE (1_Phase Mode). Move the cursor to “I”. Use the RPG to select “Iac” and press ENTER Press to return to MAIN PAGE.
Programmable AC Source 61511/61512 User’s Manual 3.3.2.1 Current Range Press Current Range at the bottom to set the current detection range. Setting appropriate current range will result in a more accurate current measurement. The current value of each range is the maximum value it can detect. If the output current is larger than the maximum current the range can detect, the screen will show I = OVRange.
Local Operation 3.3.2.2 Average Times Average Times is the sampling average of voltage/current RMS and voltage/current peak. The AC Source uses moving windows for sampling. When “4” is selected for Average Times it indicates it will be sampling 4 times in moving windows. Press Average Times at the bottom to set the average times for sampling.
Programmable AC Source 61511/61512 User’s Manual 3.3.3 Waveform Viewer Waveform Viewer can be used to see the real time output voltage/ current waveform. There are a total of 3 CH available. Voltage, current and time can be adjusted by the Scale command.
Local Operation 3.3.4 Limitation The Limit of AC Source 1-phase/3-phase output mode is set separately. For instance, the Vac Limit setting will apply the settings of the 1-phase mode when changing it from the 3-phase mode. 3.3.4.1 Vac Limit Vac Limit sets the Vac value in MAIN PAGE (3_Phase Mode/1_Phase Mode). Press Limitation on the right in MAIN PAGE (3_Phase Mode/1_Phase Mode) to set the Vac Limit.
Programmable AC Source 61511/61512 User’s Manual NOTICE The setting of Vac Limit is not restricted by range; however, the Vac in MAIN PAGE is restricted by the range. For example, assuming the range is 150V, though Vac Limit = 300V the maximum Vac setting is 150V.
Local Operation Figure 3-5 FUNCTION Keys 3.4.1 Interface 3.4.1.1 GPIB Address, RS-232C Parity/Baudrate The AC Source also has remote operation mode that can be activated by the CONFIG function (3_Phase Mode/1_Phase Mode). It is necessary to set GPIB address to 30 before conducting remote operation in 1_Phase Mode /3_Phase Mode.
Programmable AC Source 61511/61512 User’s Manual NOTICE The address range is from 1 to 30. The AC Source uses the RS-232C bus to provide remote operation. Follow the steps below to set the communication protocol. Set Parity=None and Baudrate =115200 in 1_Phase Mode /3_Phase Mode as described below: 1.
Page 53
Local Operation (3_Phase Mode/1_Phase Mode). There are two remote inhibit output states: Enable and Disable. Remote Inhibit: When the Remote Inhibit is enabled on the AC Source and the Remote Inhibit signal is LOW, the AC Source will disable the output. The AC Source holds the ouput disabled even when the Remote Inhibit signal turns to HIGH.
Programmable AC Source 61511/61512 User’s Manual 3.4.1.3 Ethernet Setting The AC Source can be operated remotely through a network once the Ethernet Settings are complete. Network Setting: Auto and Manual. The procedure for setting Network Settings manually in 1_Phase Mode/3_Phase Mode is described below.
Local Operation 3.4.2 External Vref The AC Source allows the user to use analog control signals (simulated) from an external device to set its output (optional card is required.) The External Vref terminal socket at the rear panel allows users to apply signals to the AC Source for output voltage setting. The External Vref and the Control Method can be set by the CONFIG function (3_Phase Mode/1_Phase Mode).
Page 56
Programmable AC Source 61511/61512 User’s Manual Ex (1): Set Vout to 100Vdc: When selecting range 300V in SETUP function, the applied external output voltage is V= 2.357Vdc, Vout = 100Vdc. When selecting range 150V in SETUP function, the applied external output voltage is V= 4.715Vdc, Vout = 100Vdc.
Local Operation NOTICE When Ext. Vref Control =ON, Control Method =Level, the output voltage (Vout) can only be controlled by the level of the external DC programming voltage. It is unable to control the Vout amplitude from the front panel keys until Ext. Vref Control=OFF is set. WARNING 1.
Programmable AC Source 61511/61512 User’s Manual 3.4.4 Power ON Status Users can set the output state of AC Source during power on using the Power ON Status in the CONFIG function (3_Phase Mode/1_Phase Mode). Once it is set users should save the data before power off.
Following shows the procedure of setting the current limit = 48A (32A for 61511), power limit = 6000W (4000W for 61511), delay time for trigger current protection = 3 sec. for 61512 in 3_Phase Mode. 1. Move the cursor to “OCP = ” command line.
Programmable AC Source 61511/61512 User’s Manual NOTICE When “OCP = 0.0 A”, it means the limit of output current equals to the specification limit. The setting of the delay time for trigger current protection is only valid when the current is within the specification.
Page 61
Local Operation Source output state is in QUIT mode. When the output relay is “Depend.” the output relay is closed (connected) only when the output state is in OUT mode. If the output state is in QUIT mode, the output relay will be opened (disconnected.) Output relay can be set in the SETUP function.
Programmable AC Source 61511/61512 User’s Manual At last, set the time and date of AC Source. Date/Time: Year, Month, Day, Hour, Minute, Second. Follow the procedure below to set the time and date in 1_Phase Mode /3_Phase Mode. 1. Press Date/Time at the bottom.
Local Operation 3.4.9 Factory Default Press MORE on the right in the CONFIG function (3_Phase Mode/1_Phase Mode) to go to next page. Press Factory Default on the right and Yes at the bottom to return to the factory default. PHASE Function Key Press function key in Figure 3-5 to go to the switch 3_Phase Mode/1_Phase Mode.
Programmable AC Source 61511/61512 User’s Manual 3.5.2 1_Phase Mode When the 3-phase power of the AC Source is not enough to drive the load, the 3-phase output can be paralleled to one of the phases. Pressing the function key can change the AC PHASE Source setting from 3-phase to 1-phase.
Local Operation LOCK Function Key Press function key in Figure 3-5 to lock the function. LOCK Press this key to lock all functions on the panel and making all keys invalid. Press LOCK 3~3.5 seconds to unlock it. OUTPUT Function Key Please refer to section 3.3.1 for the detail description of OUTPUT function key.
Programmable AC Source 61511/61512 User’s Manual 3.10 SAVE/RECALL Function Key The AC Source has two modes for users to save and recall the output setting or system information as described in section 3.10.1 and 3.10.2. Press function key in SAVE/RECALL Figure 3-5 to access the save and recall functions.
Local Operation NOTICE Only the save and recall settings are set in MAIN PAGE. Other parameters are ignored. In different output coupling modes (see 3.3.1.1) the missing settings will be adjusted to Vac=0V, F=60Hz, Vdc=0V automatically. For example, when executing save in DC output mode Vac=0V, F=60Hz, Vdc is the setting in MAIN PAGE.
Programmable AC Source 61511/61512 User’s Manual NOTICE The AC Source has 11 groups of memory: GROUP 0, GROUP1~10. GROUP 0 will save the power-on default. The data saved in GROUP 0 will be recalled automatically and loaded when the AC Source powers on again. As to the data saved in GROUP 1~10 memory groups, they need to be called manually for loading.
Page 69
Local Operation NOTICE The protection point varies by the measurement error, thus it may act before reaching the protection point set. 3-43 www.valuetronics.com...
Calibration Calibration Introduction The AC Source has a simple procedure built in to calibrate the output and measure the accuracy without opening the chassis. Users simply need to follow the procedure step by step for operation. A voltage meter, current meter and an adequate load with a+5V DC power supply are required to perform the calibration.
Programmable AC Source 61511/61512 User’s Manual Manual Calibration Select “Calibration” in CONFIG function (3_Phase Mode/1_Phase Mode) to input the calibration procedure. Before any calibration items appear, users have to input a password to eliminate accidental input. The password is included in the manual to ensure users read this manual before executing the calibration procedure.
Calibration Voltage setting & Measure: This is the calibration for output voltage and measurement accuracy. Current Measure: This is the calibration for current measurement accuracy. External Vref.: This is the calibration of external Vref. 4.2.1 Output Voltage and Measurement Calibration CALIBRATION CHOICE can be input after you enter the password, see section 4.2.
Page 74
Programmable AC Source 61511/61512 User’s Manual For step A in 150V Range Offset voltage calibration procedure, users should use a Digital Voltage Meter (DVM) to measure the AC Source’s output DC voltage with the unit of mV and key in the measured value to LCD. Keep monitoring the DVM readings and input/output of the DC voltage repeatedly until the DC output is lower than ±10 mV.
Page 75
Calibration For step C in 150V Range Offset voltage calibration procedure, the display shows the 150V range offset voltage calibration has been done. Press to go into save screen as shown EXIT below, or press to continue for next 150V range voltage setting and measurement ENTER calibration procedure.
Page 76
Programmable AC Source 61511/61512 User’s Manual Once the 150V Range Offset voltage calibration is done, the screen will ask the user if conducting the 150V Range Setting & Meas. calibration. Press to continue the Setting ENTER & Meas. calibration and press...
Page 77
Calibration For step C in the 150V Range Setting & Meas. calibration procedure, check if the DVM measured output voltage is about 150VAC. Input the correct value measured by the DVM and press ENTER For step D in 150V Range Setting & Meas. calibration procedure, the display shows the 150V Range Setting &...
Page 78
Programmable AC Source 61511/61512 User’s Manual Once the 150V Range Setting & Meas. calibration is done, the screen will ask the user if conducting the 300V Range Offset voltage calibration. Press to continue the Offset ENTER voltage calibration and press to skip it to go into 300V Range Setting &...
Page 79
Calibration For step B in the 300V range Offset voltage calibration procedure, the display shows the difference betweenVac and Vdc measured by the AC Source. It is generated by an internal component. Wait for 2 seconds and press , the display will show the offset voltage ENTER Vac and Vdc calculated by the AC Source at present.
Page 80
Programmable AC Source 61511/61512 User’s Manual Once the 300V Range Offset voltage calibration is done, the screen will ask the user if conducting the 300V Range Setting & Meas. calibration. Press to continue the Setting ENTER & Meas. calibration and press to skip it to go into the calibration main scrren.
Page 81
Calibration For step C in the 300V Range Setting & Meas. calibration procedure, check if the DVM measured output voltage is about 300VAC. Input the correct value measured by the DVM and press ENTER For step D in 300V Range Setting & Meas. calibration procedure, the display shows the 300V Range Setting &...
Current Measure at the bottom to calibrate the current measurement. The calibration value is different for the 61511 and the 61512 and will be specified in each step. For step A of ACCURACY CALI in Current Measure the display shows the difference between Iac and Idc measured by the AC Source.
Page 83
For step B, adjust the load to 2.5Ω for output and press . The AC Source will output ENTER 20Vac for the 61512 and 12.5Vac for the 61511. Use a Current Meter (or Power Analyzer) to measure the output current. Input the measured value and press...
Page 84
For step B, adjust the load to 2.5Ω for output and press . The AC Source will output ENTER 75Vac for the 61512 and 50Vac for the 61511. Use a Current Meter (or Power Analyzer) to measure the output current. Input the measured value and press...
Page 85
, the Iac = ENTER 0.00A and Idc = 0.00A. For step B, adjust the load to 2.5Ω for output and press . The AC Source will output ENTER 120Vac for the 61512 and 80Vac for the 61511. 4-15 www.valuetronics.com...
Page 86
Programmable AC Source 61511/61512 User’s Manual Use a Current Meter (or Power Analyzer) to measure the output current. Input the measured value and press ENTER Step C is the last step of ACCURACY CALI in Current Measure. Press to continue...
Calibration 125VAC) can this be used for calibration. Protection is removed temporary when the calibration procedure is running. It may cause the AC Source to be damaged if the incorrect load is applied. 4.2.3 External Vref Calibration CALIBRATION CHOICE can be input after the password is entered, see 4.2. Press External Vref at the bottom to conduct the external Vref calibration as shown below.
Page 88
Programmable AC Source 61511/61512 User’s Manual Step B: After short circuiting the external Vref input terminal, make the input 0V and the display will show the AC Source’s measured Vdc. The offset voltage is generated by internal components. Wait for 2 seconds and press...
Page 89
Calibration Step E: It is the last step of External Vref CALI. Press to go into the save screen as EXIT shown below, or press to continue the voltage calibration of other phases. ENTER In step E, press the display will show the save screen and press Yes on the right can save EXIT the calibrated result.
Application Overview The AC Source model 61511/61512 not only can program a stable sinusoidal output voltage and frequency, but also provides powerful features to simulate power line interrupts. Users can change the output using the Sequences in LIST mode (see 5.2), or change the output to step by step in STEP mode (see 5.4.) With these functions, the simulations of conditions...
Page 92
Programmable AC Source 61511/61512 User’s Manual Press Edit on the right to go to the setting page. The waveform programming in List mode is a combination of Sequences. The output waveform starts from Sequence = 0 and one Sequence after another until the Time or Cycle = 0, stopping the action.
Page 93
Application Count: The entire sequence execution times. Count = 0: unlimited execution. Sequence: Sequence number. The sequence has to start from 0 and the maximum sequence number is 99. The phase difference of the second/third phase and the first phase of Sequence 0 is fixed to differ 120°. Therefore, the user cannot use the angle of the second/thired phase in Sequence 0.
Page 94
Programmable AC Source 61511/61512 User’s Manual When pressing to exit LIST page, the programmed LIST mode waveform will be closed. Example of LIST Mode in 1_Phase Mode: Trigger: Auto,Base: Time,Count: 1 LIST MODE SETTING: Sequence 0: Vac start = 20V, Vac end = 100V...
Programmable AC Source 61511/61512 User’s Manual The trigger waveform when the settings are done is shown below: Pulse Mode Press Output Mode on the right on the MAIN PAGE (see 3.3) to go into the Output Mode command line and press Pulse Mode at the bottom to go into the Pulse Mode command line.
Page 97
Application PULSE mode allows users to program a special waveform and add it to the normal output settings in MAIN PAGE. Waveform programming specifies the time ratio and the duty cycle of the pulse voltage. Trigger method: Auto / Manual / Excite. Auto: It finishes all counts when triggered.
Page 98
Programmable AC Source 61511/61512 User’s Manual If the AC Source is operating, pressing will stop the output and the waveform will OUT/QUIT be zero volts. Press again the AC Source will output the waveform set in MAIN OUT/QUIT PAGE. Trigger must be pressed to re-trigger the source.
Page 99
Application The trigger waveform when the settings are done is shown below:. www.valuetronics.com...
Programmable AC Source 61511/61512 User’s Manual Step Mode Press Output Mode on the right on the MAIN PAGE (see 3.3) to go into the Output Mode command line and press Step Mode at the bottom to go into the Step Mode command line.
Page 101
Application Trigger method: Auto / Manual. Auto: It finishes all counts when triggered. Manual: The output voltage changes a step every time it operates. Count: The count number of each change. Dwell: The time for each step. Vac, F, Vdc: The Vac, F, DC initial value when STEP mode starts. ΔVac, ΔF, ΔVdc: The difference value of each step.
Page 102
Programmable AC Source 61511/61512 User’s Manual When pressing to exit the STEP page, the STEP waveform will stop execution. The LCD shows Trigger UP and Trigger DOWN when Trigger = Manual. The output waveform changes to next voltage if Trigger UP is selected; and the output waveform changes to previous voltage if Trigger DOWN is selected.
Application The trigger waveform when the settings are done is shown below: Synthesis Waveform Press Output Mode on the right in MAIN PAGE (see 3.3) to enter into the Output Mode command line. Next press Synthesis at the bottom to go into the Synthesis command line. Pressing Edit on the right will enter the Synthesis editing window.
Page 104
Programmable AC Source 61511/61512 User’s Manual 61500 Series AC Source provides a Synthesis function for users to synthesize waveform. The harmonic components range up to 40th order with the fundamental frequency limited to 50Hz or 60Hz. Users can program the size and phase of each order easily on the LCD. The following is an example figure of the synthesis waveform.
Page 105
Application Users can program 6 types of synthesis waveform to execution or save. Vac fundamental: The fundamental frequency voltage, the maximum is limited by RANGE (see 3.3.1.2.) F fundamental = 50 / 60Hz: The fundamental frequency. Vdc: The DC voltage component. Degree: The start angle of the output waveform.
Page 106
Programmable AC Source 61511/61512 User’s Manual Press Edit on the right to go to editing screen. Use the arrow keys to move the cursor to the appropriate column and use numeric keys to key-in the setting, and then press . The...
Application Press Execution Page on the right to return to the Synthesis Mode page. Next, press Run on the right to output the waveform. The figure above is the output voltage waveform of the AC Source, measured by an oscilloscope and is the same as the user edited waveform. NOTICE In order to protect the power stage of AC Source for practical use, it is necessary to limit the synthesis value or the percentage of each order.
Page 108
Programmable AC Source 61511/61512 User’s Manual For the AC Source Inter-harmonics function, besides the fundamental voltage output, another frequency of variable voltage component is added to test certain anti-interference. Following is the example figure of an inter-harmonic: 5-18 www.valuetronics.com...
Page 109
Application F start : The start frequency of scanning wave. The range is 0.01Hz ~ 2400Hz. F end : The end frequency of scanning wave. The range is 0.01Hz ~ 2400Hz。 The rms of scanning wave that is the percentage of fundamental voltage set in Level : MAIN PAGE.
Page 110
Programmable AC Source 61511/61512 User’s Manual Press Edit on the right to go to the editing screen. Use the arrow keys to move the cursor to the column to be set and use the numeric keys to key-in the setting, then press ENTER .
Application Harmonic Waveform Press Output Mode on the right in the MAIN PAGE (see 3.3) to enter into the Output Mode command line. Next press Harmonic Meas. at the bottom to go to the I Harmonic Meas. command line. Press Edit on the right to enter the Harmonic Meas. editing window. This function can measure the Total Harmonic Distortion (THD) of the fundament frequency 50Hz or 60Hz, the DC current, and the fundamental frequency of output current or voltage, also can measure 2 ∼...
Page 112
Programmable AC Source 61511/61512 User’s Manual Percent: The percentage of fundament frequency value. Value: The absolute value. Following is an example of using Harmonic Meas. Mode in 1_Phase Mode: Press OUTPUT : More Settings on the right in the MAIN PAGE to enter into the output selections page.
Page 113
Application Set the Waveform A of Φ3 to DST04 waveform. When the waveform setting is done, press View Waveform on the right to view the output waveform, the ratio of each harmonic order and the output angle. Press Return to go back to the MAIN PAGE and set the Vac of Φ3 to 100.0V, then press to output waveform.
Page 114
Programmable AC Source 61511/61512 User’s Manual Next, press Harmonic Meas. at the bottom to go to the Harmonic Meas. Mode. Press Edit on the right to go to the editing screen. Use the arrow keys to move the cursor to the column to be set and use the numeric keys to enter the setting, then press .
Page 115
Application Press Execution Page on the right to return to the Harmonic Meas. Mode page. Next press Trigger on the right to perform the output voltage harmonic measurement. After triggered, users can press DATA on the right to view the measurement of a phase. The figure above is the output voltage waveform of the AC Source measured by an oscilloscope and is the same as the user edited waveform.
System Bus and DVI communication cable to transmit parallel data. The following figure shows the parallel connencting diagram when connecting the AC Source and Power Stage Unit. If more AC Sources (61511/61512/61611/61612) or A615103 Power Stage Units are required for parallel connection, just follow the way shown below to connect them.
Programmable AC Source 61511/61512 User’s Manual Figure 6-2 Parallel Connection of AC Source and Power Stage Unit Setting Up 6.3.1 Setting the AC Source to Slave To set an AC Source to Slave, press in the FUNCTION keys to enter into the CONFIG CONFIG function and select Master/Slave Function for parallel connection setting.
Parallel Operation 6.3.2 Setting the Slave of Mixed AC Source and A615103 When the parallel connection is mixed with A615103 and AC Source as the Slave, the terminator of these two terminal devices must be enabled as the figure shown below. The maximum AC Sources to be connected in parallel is N = 5.
Programmable AC Source 61511/61512 User’s Manual Example 2: if the system has a Slave AC Source and an A615103 parallelable power stage unit, the connection is shown in the figure below. Set the terminator of Master to “Enable” and the “Position” of the Slave AC Source to “Slave2”. Also set the Slave ID of A615103 to Slave1 with terminator enabled.
Parallel Operation NOTICE At least one device needs to be set as Slave when in parallel application, or it will show “System Connection Fail!” when setting the Master Enable. See the section below for the detail description of troubleshooting. Troubleshooting When multiple devices are conneted in parallel for use, each standalone device has to have a System bus and a DVI cable to transmit the signal, or the quantity of the Slave set for connection does not match the one in actual.
Programmable AC Source 61511/61512 User’s Manual If “SYSTEM SHUTDOWN” occurs during connection, power it off first and check if the DVI cable is connected firmly. If yes, reboot it and redo the connection. 6.4.2 Parallel Setting Error If “System Connection Fail!” occurred when connecting Master, it could be the connection setting error.
Theory of Operation Theory of Operation Overview The 61511/61512 AC source consists of several Printed Circuit Boards (PCB) and other components. Each of the PCBs has specific functions that are described in the following sections. Description of Overall System Figure 7-1 is an overall system diagram that is composed of the following portions: ●...
Page 124
When L board is in 1-phase output, short circuit L1~L3 3 outputs for user wiring. ● Input Wire Selection Switch (Δ-Y wiring selection switch): Users can follow the actual power system to change the 61511/61512 internal input connection that enables 61511/61512 to accept the input from Δ or Y. SΦ1 SΦ2...
This chapter describes the procedures of self test and suggestions for troubleshooting when the AC Source is unable to operate normally. If the information provided here is unable to resolve the problem, please contact the local Chroma distributor. Self Test The AC Source runs a series of self tests during power-on.
Programmable AC Source 61511/61512 User’s Manual Troubleshooting The following table lists the operating problems and suggested corrective actions: Problem Cause Resolution Poor measurement of Aged components result in Periodic calibration is required. V, I. deviation of characteristics. Refer to Chapter 4 Calibration.
Remote Operation Remote Operation Introduction The AC Source is able to do remote control via USB, GPIB, RS-232 or Ethernet. The USB interface supports USB 2.0/USB 1.1. The GPIB interface is an 8-bit parallel data bus that is synchronized by the bus command from the host. RS-232C interface is a serial bus with less powerful functions;...
Programmable AC Source 61511/61512 User’s Manual other keys are invalid except LOCAL/REMOTE Press LOCAL/REMOTE can return to local mode. 9.1.3 RS-232C Interface The baud rate of the AC Source is set to 115200 with parity set to None. For the RS-232C parameters such as baudrate and parity can be set via “CONFIG”...
Remote Operation Introduction to Programming All commands and response messages are transmitted in ASCII code. The response messages must be read completely before sending a new command; otherwise the remaining response messages will be lost and a query interrupt error will occur. 9.2.1 Conventions Angle brackets...
Programmable AC Source 61511/61512 User’s Manual 9.2.5 Basic Definition Command Tree Table: The commands of the AC Source are structured hierarchically, which is called tree system. Full path must be specified to obtain a particular command. This path is represented in the table by placing the highest node in the farthest left position of the hierarchy.
Remote Operation (1) <END> : end or identify (EOI) (2) <NL> : new line which is a single ASCII encoded byte 0A (10 decimals). (3) <NL> <END> : new line with EOI. NOTICE The response message is terminated by <NL> <END> for GPIB, and <NL> for RS-232C. Headers Data Root Specifier...
Programmable AC Source 61511/61512 User’s Manual Commands of AC Source This section talks about the syntax and parameters of all commands for the AC Source. The examples of each command can be used in common. Syntax Form Syntax definition is in long format header; however, only short format header appears in the examples.
Remote Operation 123456 : Serial number 01.00 : Firmware version *RCL<n> Restore the values of specified group that stored in memory previously. Parameter 1 - 10 *SAV<n> Save the values to a specified group in memory. Parameter 1 - 10 * RST It resets the AC Source to the initial states.
Remote Operation SYSTem:TIME Description : This command sets the time (24H) of the AC Source real time clock. Query Syntax : SYSTem:TIME? Parameter : <hour>,<minute>,<second> Return Parameter : 20,30,01 9.5.2.2 INSTRUMENT Sub-System INSTrument :EDIT :Couple :NSELect :SELect :PHASe INSTrument:EDIT Description : It is very convenient to use a programmed command to set all phases at the same time for an AC Source that equipped with multiple phases.
Programmable AC Source 61511/61512 User’s Manual INSTrument : SELect Description : This command sets individual output for subsequent commands or queries in the multi-phase model. If INST: COUP NONE has been programmed, the phase selection command will send to a specific output phase set by INSTrument: SELect.
Page 137
Remote Operation :LINE :V12? It queries the voltage difference of phase 1 and :V23? It queries the voltage difference of phase 2 and :V31? It queries the voltage difference of phase 3 and This command enables users to get measurement data from the AC Source via MEASure and FETCh.
Page 138
Programmable AC Source 61511/61512 User’s Manual FETCh [ : SCALar] : CURRent : INRush? MEASure [ : SCALar] : CURRent : INRush? Description : These queries return the inrush current that is output from the output terminal. Query Syntax : FETCh:CURRent: INRush?, MEASure: CURRent : INRush? Return Parameter : <NR2>...
Page 139
Remote Operation FETCh [ : SCALar] : POWer : AC : TOTal ? MEASure [ : SCALar] : POWer : AC : TOTal ? Description : These queries return the total of real power that is output from 3-phase output terminal in watt. Query Syntax : FETCh : POWer : AC : TOTal? MEASure : POWer : AC : TOTal?
Programmable AC Source 61511/61512 User’s Manual FETCh [ : SCALar] : LINE : V12? MEASure [ : SCALar] : LINE : V12? Description : These queries return the line voltage between phase 1 and 2. Query Syntax : FETCh [ : SCALar] : LINE : V12? MEASure [ : SCALar] : LINE : V12? Return Parameter : <NR2>...
Page 141
Remote Operation OUTPut : RELay Description : This command sets output relay on or off. Query Syntax : OUTPut : RELay? Parameter : OFF | ON, ON sets the output relay of the AC Source on (close), OFF sets the output relay of the AC source off (open). Return Parameter : OFF | ON OUTPut : SLEW : VOLTage : AC Description...
Programmable AC Source 61511/61512 User’s Manual Query Syntax : OUTPut : IMPedance : STATe? Parameter : ON | OFF Return Parameter : ON | OFF OUTPut : IMPedance : RESistor Description : This command sets the resistance of output impedance.
Page 143
Description : This command sets the current measurement range for output. Query Syntax : [SOURce:]CURRent:RANGe? Parameter AUTO Para. Model 61512 192A Auto 61511 128A Auto 61612 192A Auto 61611 128A Auto Return Parameter :1 |2 |3 | Auto 9-17 www.valuetronics.com...
Page 144
Programmable AC Source 61511/61512 User’s Manual [SOURce :] FREQuency [: {CW | IMMediate}] Description : This command sets the output waveform frequency for the AC Source in Hz. Query Syntax : [SOURce :] FREQuency [: {CW | IMMediate}]? Parameter : <NR2>, the valid range is 15.00 ~ 1500.0 (unit: Hz.) Return Parameter : <NR2>...
Page 145
Remote Operation [SOURce :] VOLTage : LIMit : DC : MINus Description : This command sets the Vdc Limit(-). Query Syntax : [SOURce :] VOLTage : LIMit : DC : MINus? Parameter : <NR2>, the valid range is -424.2 ~ -424.2 (unit: V) PS: The upper limit cannot exceed Vdc Limit(+).
Programmable AC Source 61511/61512 User’s Manual [SOURce :] FUNCtion : SHAPe : B Description : This command specifies the waveform buffer B for use. Query Syntax : [SOURce :] FUNCtion : SHAPe : B? Parameter : SINE | SQUA | CSIN | DST<01..30> | USR<01..06>...
Remote Operation [SOURce :] CONFigure : COUPling? Description : This command sets the External-V Reference to be AC_AMPLIFIER or DC_LEVEL to control the AC Source output. Query Syntax : [SOURce :] CONFigure : COUPling? Parameter : AC | DC Return Parameter : AC | DC [SOURce :] CONFigure : EXTON Description : This command sets the External ON/OFF control.
Programmable AC Source 61511/61512 User’s Manual Parameter : <NR2>, the valid range is 0.0 ~ 359.9. Return Parameter : <NR2> [SOURce:]PHASe:SEQuence Description : This command sets the phase sequence in 3-phase mode. Query Syntax : [SOURce :]PHASe:SEQuence? Parameter : POS | NEG...
Page 149
Remote Operation STATus : QUEStionable : CONDition? Description : This query command returns the value of Questionable Condition register. It is a read only register that saves the questionable condition of AC Source in real time. Query Syntax : STATus : QUEStionable : CONDition? Parameter : NONE Return Parameter : <NR1>, the valid range is 0 ~ 511.
Programmable AC Source 61511/61512 User’s Manual OVP : Output voltage protection : Line input protection. : Over current protection. FAN : Fan failure. : Output short protection. : Over temperature protection. : Over power protection. INT-DD : Inner DD power stage protection...
Remote Operation 9.5.2.10 LIST Sub-system [SOURce :] LIST : COUPling :TRIG : POINts? : COUNt : DWELl : SHAPe : BASE : VOLTage : AC : STARt : END : DC : STARt : END : FREQuency : STARt : END : DEGRee OUTPut : MODE...
Page 152
Programmable AC Source 61511/61512 User’s Manual Parameter : <NR1>, the valid range is 0 ~ 65535. Return Parameter : <NR1> [SOURce :] LIST : DWELl Description : This command sets the sequence of dwell time list points. Query Syntax : [SOURce:] LIST : DWELl? Parameter : <NR2>, …, <NR2>, the valid range is 0 ~ 99999999.9 (unit: ms.)
Remote Operation [SOURce :] LIST : FREQuency : STARt Description : This command sets the sequence of start frequency list points. Query Syntax : [SOURce:] LIST : FREQuency : STARt? Parameter : <NR2>, …, <NR2>, the valid range is 15.00 ~ 1000.00 (unit: Hz.) Return Parameter : <NR2>, …, <NR2>...
Page 154
Programmable AC Source 61511/61512 User’s Manual OUTPut : MODE TRIG TRIG : STATE? [SOURce :] PULSe : VOLTage : AC Description : This command sets AC voltage for the duty cycle of PULSE mode. Query Syntax : [SOURce :] PULSE : VOLTage : AC? Parameter : <NR2>, the valid range is 0.0 ~ 150.0 (low range), 0.0 ~ 300.0 (high...
Remote Operation [SOURce :] PULSe : DCYCle Description : This command sets the duty cycle of PULSE mode. Query Syntax : [SOURce :] PULSE : DCYCle? Parameter : <NR2>, the valid range is 0 % ~ 100 %. Return Parameter : <NR2> [SOURce :] PULSe : PERiod Description : This command sets the period of the PULSE mode.
Page 156
Programmable AC Source 61511/61512 User’s Manual : DWELl : COUNt : TRIG OUTPut : MODE TRIG TRIG : STATE? [SOURce :] STEP : VOLTage : AC Description : This command sets the initial AC voltage of STEP mode. Query Syntax...
Page 157
Remote Operation [SOURce :] STEP : DVOLtage : DC Description : This command sets the DC voltage change in each step. Query Syntax : [SOURce :] STEP : DVOLtage : DC? Parameter : <NR2>, the valid range is -212.2 ~ 212.1 (low range), -424.2 ~ 424.2 (high range.) Return Parameter : <NR2>...
Programmable AC Source 61511/61512 User’s Manual 9.5.2.13 SYNTHESIS Sub-system [SOURce :] SYNThesis : COMPose : AMPLitude : PHASe : FUNDamental : DC : FREQuency : SPHase OUTPut : MODE TRIG TRIG : STATE? [SOURce :] SYNThesis : COMPose Description : This command sets the data format of each harmonic order.
Page 159
Remote Operation [SOURce :] SYNThesis : FUNDamental Description : This command sets the fundamental AC voltage in SYNTHESIS mode. Query Syntax : [SOURce :] SYNThesis : FUNDamental? Parameter : <NR2>, the valid range: 0.0 ~ 150.0 (low range), 0.0 ~ 300.0 (high range) Return Parameter : <NR2>...
Remote Operation OUTPut : MODE Description : This command sets the operation mode. Query Syntax : OUTPut : MODE? Parameter : FIXED | LIST | PULSE | STEP | SYNTH | INTERHAR Return Parameter : FIXED | LIST | PULSE | STEP | SYNTH | INTERHAR TRIG Description : This command sets INTERHARMONICS mode in OFF, ON,...
Page 162
Programmable AC Source 61511/61512 User’s Manual Parameter : VOLT | CURR Return Parameter : VOLT | CURR [SOURce :] CONFigure : HARMonic : TIMES Description : This command sets the way the measurement result of harmonic analysis displayed on LCD.
Page 165
Remote Operation [: LEVel][: IMMediate][:AMPLitude] : AC : DC : LIMit : AC : DC : PLUS : MINus : RANGe POWer : PROTection FUNCtion : SHAPe : SHAPe : MODE : THD : AMP : MODE : THD : AMP LIST : Coupling :TRIG...
Page 166
Programmable AC Source 61511/61512 User’s Manual : DC : FREQuency : SHAPe : SPHase : COUNt : DCYCle : PERiod STEP : VOLTage : AC : DC : FREQuency : SHAPe : SPHase : DVOLtage : AC : DC : DFRequency...
Appendix A TTL Signal Pin Assignments Appendix A TTL Signal Pin Assignments Green terminal with female connector: Pin No. Signal Description Ext-V Φ1 Φ1 External-V Reference signal input (-10V~10V) Ext-V Ф2 Φ2 External-V Reference signal input (-10V~10V) This is the input pin of external voltage signal for single phase use.
Appendix B Built-inDST Waveform Appendix B Built-in DST Waveform The ratios of all built-in waveforms’ steps are measured under no load. DST01 DST02 DST03 www.valuetronics.com...
Need help?
Do you have a question about the 61511 and is the answer not in the manual?
Questions and answers