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DiRAC User`s Manual

1. All Rights Reserved CAEN ELS d o o Rev 1 3 October 2014 el CAEN ELS doo Kra ka ulica 2 6210 SeZana Slovenija Mail info caenels com Web www caenels com Table Of Contents e INTRODUCTION eege eege ee 10 1 1 DIRAC OVERVIEW ein EE he ett iai sesh AR ROE 10 1 2 Kee TEE 12 2 SAFETY AND INSTALLATION eessen green Geesse 14 2 1 GENERAL SAFETY INPORMATION 14 2 2 og CH ICHTEN 14 2 3 INJURY PRECAUTIONS lt Q Mia ccccccsssssccsssssescecsesseecesssneeceesseeeess 15 2 3 1 Caution E NN 15 2 4 GROUNDING E ccccccssssccesssssteecseeee 15 2 5 INPUT RA Tg WEE 16 2 6 OUT gg eee 16 2 7 Ltr 16 2 8 PART REPLACEMENT AND MODIFICATIONS ms 16 2 9 INSTALLATION INSTRUCTION S rrcerepreveveverrrrtrterveenegecssssseceecessecceescsceecsesanaheees 16 3 vd NI 0 18 3 1 Ze 18 3 1 1 Maximum Output Current and Voltage Thresholds 20 rr elei DOS 21 3 2 DRA REAR PANEL cccssessestersccscesessesseetertececssesssesee DNS 22 3 2 1 Internal Protections cccccccccccccccccccccccecccecececececececececececsescsceeseseecseseneseseneess 24 3 2 2 External Interlocks and Relay Contacts MMNMM 26 222200 Int locker 28 3 2 2 2 Interlocks Activation States ENEE 29 3 2 2 3 Interlocks Intervention Time 29 3 2 2 4 Interlock Configuration Example ss 30 3 3 EEPROM MEMORY MAPPING cccccccecsssessssececeseeeenensn
2. Si ee eee E 5 50 DiRAC User s Manual Remote Control MWG Write selected EEPROM value cell W MWI Set output current value no ramp W PASSWORD Write password to unlock password Ww protected cells SIP Set module IP address W VER Read module model and installed R firmware versions Table 5 DiRAC module Command List It is importanteto notice that some commands are write only commands e g MRM to set output current and some others are read only commands e g MRI to read output current value The only command that allows reading and setting is the MSR command which reads or sets the user defined slew rate for the power supply see MSR Command section for further details 5 3 Commands Overview The power supply controller replies every time that a termination character r is received Replies could have different behaviors e an acknowledgment AK r string is sent back in case of a correct setting command e a non acknowledgment NAK r string is sent back in case of a wrong unrecognized command or if the system is in local operation mode and a write command is sent to the controller write commands are marked with a W in Error Reference source not found e a standard reply preceded by a and followed by a r character is sent back as a response to a reading command A brief description for each command in alphabetical order is herein presented with
3. rte input 2 inputs Priority l Min notification interval 1 s Re notification interval s O FT D 2 e Setup erver Channel 1 E mail Expert Security Defaults Exit without save Save and exit Your choice IP Address 192 192 168 168 00 10 111 VOUS rex e Press the Enter key until reaching the Your choice screen again Now insert 9 i e Save and exit and press Enter again ep _ Telnet 192 168 0 10 rr E WW Server Channel 1 E mail Expert Security Defaults Exit without save Save and exit Your choice IP Address 192 192 168 168 000 1 111 Set Gateway IP Address NNetmask Number of Bits e Host Part default 8 Set DNS Server IP addr N Kale ckil d e Change Telnet Web Manager Ge N nge Setup erver Channel 1 E mail Expert Security Defaults Exit without save Save and exit Your choice 9 Kal ckil ld OD The device should now reboot in order for the changes to take effect 89 Remote Control DiRAC User s Manual 5 4 3 IP Address configuration DeviceInstaller If the power supply IP address is not know by the user and local access to the module is not possible the best way to find out and to configure the module IP address is to use the Devicelnstaller software The Devicelnstaller software can be downloaded for free from the Lantronix website www lantronix com The DiRAC po
4. RIPPLE FAULT WAVEFORM EXECUTION FLAG TURNING OFF DiRAC User s Manual Remote Control RAMP EXECUTION FLAG REGULATOR FAULT GROUND CURRENT MAINS NOT OK TRANSFORMER OVER TEMPERATURE INTERNAL OVER TEMPERATURE CROWBAR reserved LOCAL WARNING FAULT MODULE ON The set reg structure in order to set the desired behaviour must be interpreted as follows FDR command register OH oe Ran Example Suppose that the DiRAC power unit is ON and it is regulating at 85 0000A output current The user sends the following command to the DiRAC FDB 58 83 2453 r FDB 00001001 083 2453 085 0000 After sending the FDB command the PS turns on it was already ON and sets its current to 83 2453A reaching this setpoint with a ramp defined by the slew rate value stored in the PS non volatile memory O Remote Control DiRAC User s Manual The entire reply from the power supply referred to the format just presented can be interpreted as follows Module is ON Ramp is executing Ramp execution flag actual output current value is 85 0000A the new set point is 83 2453A DiRAC User s Manual Remote Control 5 3 2 HWRESET Command The HWRESET r command performs a complete reset of the hardware and firmware of the on board FPGA thus re initializing the entire DiRAC module control electronics Replies from the power supply are in the form AK r or NAK r this non acknowledgm
5. Replies from the DiRAC power supply unit to this command are in the following form H MRvYV value r where e value is the output voltage readback V measured at the module output terminals The MRV command being a reading command returns a response in any module condition e g local remote Examples MRV example when the module is OFF MRV r MRV 0 00012 r MRV example when the module is ON and regulating output voltage MRV r MRV 29 54563 r eg Remote Control DiRAC User s Manual 5 3 17 MRW Command The MRW r command returns the actual value of the estimated active power supplied to the connected load This estimation being computed as the product of the output voltage and the output current readback values has the same 20 bit resolution and it is presented with a 5 digit precision Replies from the DiRAC power supply unit to this command are in the following form MRW value r where e value is the output active power readback W estimated as the product of output voltage and output current readbacks The MRW command being a reading command returns a response in any module condition e g local remote Examples MRW example when the power supply is OFF MRW r MRW 0 04532 r MRW example when the power supply is ON and regulating output current MRW r MRW 4322 72345 r O SS DiRAC User s Manual Remote Control 5 3 18 MSP Command The
6. Slew Rate cell 30 this value A s determines the slew rate value of the power supply The module ramps using the command MRM r at a defined set point with this pre defined value of slew rate OL DiRAC Description DiRAC User s Manual Earth Current Limit cell 31 this value A defines the maximum value allowable for the earth leakage current before generating a fault condition and disabling the power stage thus generating a fault condition Regulation Fault Threshold cel 37 this value A defines the maximum allowable value calculated as the difference from the actual output current set point before generating a fault condition Ripple Fault Threshold cell 39 this value A defines the maximum allowable value calculated as the peak to peak output current ripple before generating a fault condition Interlock Enable Disable Mask cell 48 this cell contains and defines the hexadecimal A SCH number that represents the binary mask forthe individual setting of interlocks from 1 to 4 see Interlocks Enabling Disabling for further information Interlock Activation State Mask cell 49 this cell contains and defines the hexadecimal ASCII number that represents the binary mask for the individual setting of activation state of interlocks from 1 to 4 see Interlocks Activation State for further information Interlock 1 to 4 Intervention Time cell 50 to 53 these cells contain the
7. The internal logic continuously compares this temperature value with a pre defined threshold and generates a fault condition if the measured temperature is greater than the threshold one Note this value can be configured writing EEPROM value cell 20 see MWF Command Section for more information 3 2 1 6 Transformer Over Temperature The logic of this temperature control is similar to the one of the heatsinks with different current sensors placed on the power transformers of the unit is monitored in An analog stage selects continuously only the maximum temperature between those and feeds the corresponding it to a 16 bit ADC The internal logic continuously compares this temperature value with a pre defined threshold and generates a fault condition if the measured temperature is greater than the threshold one O DiRAC Description DiRAC User s Manual Note this value can be configured writing EEPROM value cell 21 see MWF Command Section for more information 3 2 1 7 Earth Leakage Current Detector The earth leakage current is detected by sensing the current flowing into a shunt resistor connected to earth A common mode current may be present when the load or cabling to the load has a weak isolation to ground The voltage proportional to the current is measured by a 16 bit ADC so that the threshold that trips the earth current limit fault can be configured by software EEPROM cell 31 stores this v
8. that was previously started witha MWAVESTART command This command immediately stops the execution of the stored current waveform that is running and ramps down current to OA zero with a factory default slew rate Replies from the DiRAC power supply unit are in the form AK r or NAK r this non acknowledgment reply is generated as it is for the MRM command when e the power supply unitis in LOCAL mode e the power supply unit is not executing a waveform Examples MWAVESTOP example when DiRAC unit is not performing a waveform or is in LOCAL mode MWAVESTOP NAK MWAVESTOP example with a waveform running MWAVESTOP AK r CR CR Remote Control DiRAC User s Manual 5 3 30 MWF Command The MWF command lets users write a desired field item in a defined EEPROM cell The correct form format for this command is as follows MVWF cell num cell_ content r where e cell_num is the EEPROM cellnumber e cell_ content is the ASCII content to be written to the EEPROM cell cell_num The on boardeEEPROM memory used to store module information as calibration parameters identification thresholds and divided in two sections field and value has 512 cells so that cel _num is limited between 0 and511 writing operations containing cell values exceeding these limits obtain a non acknowledgment reply NAK r This field section of the EEPROM is used to store descriptive
9. values of the interlock intervention times in ms see Interlocks Intervention Time for further information 3 4 Status Register Each DiRAC power supply unit has an internal 32 bit status register that contains all useful information about the power supply operation this register is updated in real time and it is always accessible by the user via the remote connection The internal status register structure is presented in Table 4 bit 31 is the MSB and bit 0 the LSB Status bit Cell Caption 31 FAN FAIL WARNING 30 DCCT FAULT 29 OPEN LOOP OPERATION 28 EEPROM READ WARNING 27 20 reserved 19 16 EXTERNAL INTERLOCKS 4 1 15 RIPPLE FAULT 14 WAVEFORM EXECUTION FLAG Ss DiRAC User s Manual DiRAC Description 13 TURNING OFF 12 RAMP EXECUTION FLAG 11 REGULATOR FAULT 10 GROUND CURRENT 9 MAINS NOT OK 8 TRANSFORMER OVER TEMPERATURE y INTERNAL OVER TEMPERATURE 6 CROWBAR 5 4 reserved 3 LOCAL 2 WARNING 1 FAULT 0 MODULE ON Table 4 32 bit internal status register The status register value can be directly read by users using the MST r command The returned item Ga 4 digit hexadecimal ASCII string corresponding to the equivalent status register A brief description of all the binary flags is here presented Module ON bit 0 this bit is set if the module is enabled and correctly regulating output current Fault bit 1 this bit is set if the module has experienced a fault e g g
10. MSR 88 6 r AK r 1 DiRAC User s Manual Remote Control 5 3 20 MST Command The MST r command returns the value of the power supply internal status register 32 bit Replies from the DiRAC power supply unit to this command are in the following format MST value r where e value is the ASCII representation of the internal status register value composed by 8 hexadecimal digits and corresponding to the 32 bit wide status register The MST command being a reading command returns a response in any module condition e g local remote Examples MST example with the DiRAC power supply ON ramping and in LOCAL mode MST r MST 01000009 7 OL Remote Control DiRAC User s Manual 5 3 21 MUP Command The MUP r Module UPdate command performs an update of the DiRAC power supply actual parameters with the parameters read from the module EEPROM As an example the MWF command updates only the content of the selected EEPROM field but not the corresponding DiRAC power unit parameters In order to make the module update its parameters and so to make these changes take effect it is necessary to perform the MUP r command this procedure is implemented not to apply wrong or undesired transmitted values on the run Replies from the power supply are in the form AK r or NAK r this non acknowledgment reply is generated when e the power supply is in LOCAL mode e the powe
11. T Transf the maximum measured transformer temperature C e SR the defined value for the slew rate_ A s e GND Curr the measured ground leakage current A DiRAC User s Manual Remote Control 5 Remote Control Any DiRAC power supply unit can be also remotely controlled via a standard Ethernet 10 100 link using a predefined set of commands After setting the DiRAC module to REMOTE operation there should be an evidence of the power supply system being in this mode a red R character should appear on the upper leftsangle of the power supply display an L character is displayed on the same angle when working in LOCAL mode The status of the module e g LOCAL REMOTE on power up is stored and recalled from the module internal memory so that each DiRAC unit powers up in the same state it was when it had been powered down 5 1 Preliminary Information In order to ensure a correct communication with a DiRAC power module the following rules have to be ponted out e commands to the DiRAC power supply must be sent with a r carriage return OxOD hexadecimal number termination character e replies from the DR AC power supply also have a Wi carriage return OxOD hexadecimal number termination character A complete list of commands except for reserved commands is herein presented and an overview for each command syntax and functionality follows The extreme configurability of this power supply le
12. The new DiRAC power supply unit IP address should now be assigned and the success of the operation can be verified on the Devicelnstaller main window if the window does not refresh click on Search a I Technical Specifications DiRAC User s Manual 6 Technical Specifications Technical Specifications for the DiRAC monopolar power supply units are here presented DiRAC Power Unit Rated output current GE E Rated output voltage east e S npu S A version 3 x 208 V AC 47 63 Hz E version 3 x 400 V AC 47 63 Hz PF Power Factor ae e a E Topology Three level ZVS converter Maximum output power up to 6 kW Current setting r solution 18 bit Output current readback 20 bit Output voltage readback 20 bit Output current ripple 100 ppm FS Output current stability 20 ppm FS AC DC efficiency up to 90 Switching Frequency 100 kHz Accuracy lt 0 01 Regulation Range From A to 100 External Interlocks States 4 Inputs user configurable contacts 2 Outputs relay type 1 magnetic 1 solid state 6 92 DiRAC User s Manual Technical Specifications Internal Interlocks Over Temperature Earth Fault Current Regulation Fault Fan Fault AC Fault Hardware protections Load energy dumping free wheeling Circuit breaker Auxiliary ADC Read Backs Internal Temperatures Earth Leakage Current Cooling Air Convectio
13. connection The TELNET connection must be established to port 9999 of the Ethernet device of the power supply module Please carefully follow the instructions in order to correctly set change the IP address of the A3660BS module e establish a TELNET connection to port 9999 of the module IP address e g 192 168 0 10 Amministratore Prompt dei cor un d ili r Microsoft Windows Versione 6 1 7601 Copyright c 2009 Microsoft Corporation Tutti i diritti riservati BC Users Mit La ech mandi s zc a ea N sos e now press Enter on the prompt to enter configuration menu MAC address 0204AE04372 Software version V6 7 1 100420 XPTEXE Press Enter for Setup Mode e on the device Telnet based menu first select the Server option by inserting 0 and by pressing Enter on the prompt 9 DiRAC User s Manual HA Telnet 192 168 0 10 ug ication interval 1s Re notification interval CE Trigger 3 Seria elit input disabled hannel Kirech input2 input3 1s ei E Channel 1 E mail Expert Security Defaults Exit without save Save and exit Your choicel EE Remote Control e when asked for the IP Address please enter the desired new IP address for the power supply Please note that the IP address must be entered as 4 three digit number e g 192 168 0 111 E Telnet 192 168 0 10 ger 3 ial SE input disabled
14. cycling should display a loading screen for a few seconds see Figure 7 meaning that the power supply is correctly initializing and loading internal parameters loading alization is done and internal parameters are co 4 2 2 Home Monitor Page The DiRAC home page screen is the first loaded page upon power up or power cycling of the module it is shown in Figure 8 and contains information on e the module LOCAL REMOTE state the DiRAC power supply unit identification name content of EEPROM value cell 27 output current readback value A with 1mA resolution output voltage readback value V with 10mV resolution output active power readback value W with 100mV resolution status of the power supply PS name lo 118 00 A Vo 032 26 V Po 3806 7 W Figure 8 Home Page screen The status indicator of the power supply e g OK in the previous figure is continuously blinking as it is updated every 200 ms and gives an indication on whether the module is operating correctly or not If the module has experienced one or more faults e g interlock intervention over temperature conditions etc the home page screen would display a list of all the faults presenting them in an alternate way one after the other The power supply latches on every fault recognized by the internal logic so that every type of fault is recorded this means that the first fault happening does not ban the other on
15. do not operate this product in an explosive atmosphere Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel 2 4 Grounding To minimize shock hazard the DiRAC power supply system must be connected to an electrical ground O Safety and Installation DiRAC User s Manual 2 5 Input Ratings Do not use AC supply which exceeds the input voltage and frequency rating of this instrument For input voltage and frequency rating of the module see Chapter 6 For safety reasons the mains supply voltage fluctuations should not exceed above voltage range The DiRAC power supply units are available in two different input rating versions A version 3 x 208V AC 47 63 Hz E version 3 x 400V AC 47 63 Hz Please read carefully the version type before connecting the unit to power mains 2 6 Output Connectors Do not plug or unplug output connectors when power converters are on and the power units are regulating current on the electrical load 2 7 Live Circuits Operating personnel must not remove the 19 crates covers No internal adjustment or component replacement is allowed to non CAEN ELS d o o personnel Never replace components with power cables connected In order to avoid injuries always disconnect power plugs discharge circuits and remove external voltage source before touching components wait 5 minutes at leas
16. identification names cells 50 to 53 for more information on how to write parameters in the field area of the memory please refer to MWF Command section Replies from the DiRAC power supply are in the following format cell_content r where e cell_ content is the cell_num content in an ASCII representation The MRF command being a reading command returns a response in any module condition e g local remote this reply is a NAK r also if the memory cell is empty Examples MRF example with cell_num out of limits MRF 539 r NAK MRF example for a user defined interlock related cell interlock 3 MRE 52 r THERMAL_SWITCHI r SS DiRAC User s Manual Remote Control 5 3 10 MRG Command The MRG r command returns the value stored in the value parameter of a desired EEPROM cell The correct form for the reading request is as follows MRG cell_ num where e cell_num is the EEPROM cell number The on board EEPROM memory used to store module information as calibration parameters identification thresholds has 512 cells so that cell num is limited between O and 511 requests containing cell values exceeding these limits obtain a non acknowledgment reply NAK r A non acknowledgment response i e NAK r is returned also if the field cell_num is empty The value section of the EEPROM is used to store calibration parameters identification th
17. is already enabled generates an non acknowledgment response i e NAK r Examples MON example when no fault conditions are present MON r AK r MON example whenthe DiRAC power unit is in LOCAL mode MON r NAK 8 DiRAC User s Manual Remote Control 5 38 MRESET Command The MRESET r command has to be used in order to perform a complete reset of the module status register this is needed for example to re enable the power supply output again after a fault condition has been fixed Reply from the DiRAC module is AK r if the module is set in REMOTE mode and NAK r if in LOCAL mode Examples MRESET example when DiRAC power unit is in LOCAL mode MRESET NAK r MRESET example when DiRAC power unit in REMOTE mode MRESET Y AK r eg Remote Control DiRAC User s Manual 5 3 9 MRF Command The MRF r command returns the value stored in the field parameter of a desired EEPROM cell The correct form for the reading request is as follows MRF cell_ num where e cell_num is the EEPROM cell number The on board EEPROM memory used to store module information as calibration parameters identification thresholds has 512 cells so that cell_num is limited between O and 511 requests containing cell values exceeding these limits obtain a non acknowledgment reply NAK r The field section of the EEPROM is used to storesinterlocks
18. password protected and need to be unlocked in order to write their content Please refer to Table 2 and Table 3 to write values and fields to configure correctly the DiRAC power supply unit and note that the commands to be used are MWG command to write the respective value cell content MWF command to write the respective field cell content The power supply controller automatically handles EEPROM addresses and value and field cell sections so that the MWF and MWG commands are almost transparent to the users and there is no need to write complicated cell addresses 2 DiRAC User s Manual DiRAC Description Example suppose that the proportional term value K of the internal PID digital regulator has to be changed to 0 15 Referring to Table 2 this value is not password protected and it is placed at value section cell number 13 The following command needs to be sent to the A3660BS module MWG 13 0 15 r and should receive an acknowledgment reply from the power supply Le AK r Now the value 0 15 it is stored in the value cell number 13 which is the cell 0x41A0 since the value section offset is equal to 0x4000 bytes and each cell length is 0x20 byte In order to make the module apply the value K 0 15 to its internal regulator a MUP r command has to be sent The changing on the PID regulator parameters should in addition take effect only with the mo
19. strongly inductive loads Replies from the DiRAC power supply to a MOFF r command are in the form FAK r or NAK r the NAK r reply is obtained if e the module isin LOCAL mode Sending a MOFF r command when the module output is already disabled generates an acknowledgment response i e AK r Examples MOFF example when the DiRAC module output is already disabled MOFF r AK r MOFF example when the DiRAC power supply unit is in LOCAL mode MOFF r NAK r MOFF example when the DiRAC module is ON and sourcing sinking current MOFF r AK r Remote Control DiRAC User s Manual 5 3 7 MON Command The MON r command is intended to turn on the DIRAC power section thus enabling the output current terminals and allowing the power supply to regulate and feed current to the connected load After the reception of an MON command the power supply automatically sets output current to OA zero when enabling the output Replies from the DiRAC module to a MOFF r command are in the form AK r when the command is correctly executed or NAK r The NAK r reply is obtained if e the power supplyas in LOCAL mode e the DiRAC module is in a FAULT condition it is necessary to reset the status register after a generic fault condition in order to turn the power supply ON again see command MRESET r Sending a MON command when the module output
20. the DiRAC power supply unit status from LOCAL operation to REMOTE and vice versa The actual status can be continuously monitored by the L or R letter on the upper left corner of the display OL 4 2 4 Set Current Page The Set Current page allows users to locally set the current setpoint of the power supply module From this page it is also possible to check the actual module output current indicated as Read current A In order to perform the current setting operation it is necessary for the module to be in the LOCAL mode indicated by a black L in a red frame in the upper left corner of the display as shown in Figure 11 Set current Set current A Figure 11 Set Current screen The Set text in the bottom left corner of the display needs to be clicked on in order to make the new current setpoint take effect The power supply unit will reach the new setpoint by ramping with the predefined slew rate which can be checked on the Connectivity page of the menu By clicking the Exit text on the bottom right corner the user can return to the Menu page 8 4 2 5 Connectivity Page The Connectivity page allows users to check the module MAC Media Access Control address and the IP address as well as also setting the second one The DiRAC power supply IP address can be easily changed from this panel by selecting the new address with the local encoder in the screen shown in Figure 12 Con
21. turning off the power supply output stage from a high current value on a high inductive load i e 120A on a 20mH magnet 9 DiRAC User s Manual DiRAC Description This protection also activates a galvanically isolated logic signal that generates a software interrupt on the on module FPGA when this signal is activated the FPGA sets a flag in the status register that needs to be reset before re enabling the channel output again 3 2 1 3 Phase Fail A phase fail circuit detects whether a phase is missing or if the voltage at the input is at a voltage level outside rated values The power part gets powered down if one phase has a value of about 80 of rated value 7 8 Fa for A version Phase Fail 180V for E version that is about LION x 0 8 and 220V x 0 8 respectively for the A version and the E version 3 2 1 4 Circuit Breaker The circuit breaker on the three phases present on the DIRAC front panel protects the power supply power parts in case of malfunctioning Please note that the circuit breaker does not switch off the control electronics auxiliary power supply so that the communication and diagnostic section of the unit is not affected 3 2 15 Heatsink Over Temperature The temperature on the main heatsink of the DiRAC power unit is monitored in many different spots An analog stage selects continuously only the maximum temperature among those and feeds the corresponding signal to a 16 bit ADC
22. with the output connections Introduction DiRAC User s Manual 1 2 Description An example of the DiRAC system unit is shown in Figure 1 and it is composed by a single 3U 19 crate Figure 1 front view of a DiRAC power supply unit Circuit breakers RJ 45 Ethernet connection socket encoder for local control fan air inlets and LED indicators are all present on the front panel of the DiRAC unit Two trimmers accessible with a little screwdriver for regulating hardware thresholds of maximum output current and voltage are also present together with two LEMO connectors that allow monitoring of either a the scaled actual maximum current and voltage thresholds that have been set via the trimmers for the DiRAC unit b the scaled actual output current and output voltage monitors The selection between a and b is performed by a switch this is also present on the front panel Please refer to Section 3 for further information about functionalities of the DiRAC front and rear panel controls and connectors DiRAC User s Manual Introduction PS Link connection Three phase AC Line warwa HIGH POWE Interlock connector Earth Terminal Output Terminals Figure 2 rear view of a DIRAC power supply unit Channel interlock connection PS link connector additional earth terminal output terminals air outlets and three phase inputs are all present on the rear pan
23. 21 VUP Conypgudea EE 74 SE 7 Cone OS 75 Led ES 76 SRI WAVE Command SE 77 5 3 26 MWAVEP Command nn rss dent 78 5 3 27 MWAVER Command insomnie 79 SC V WA VESTARI CGR OR RE 80 20 WA V EST OP Cer ned 81 5 3 30 lt MWF Command S 82 5 3 31 EG Command ss 83 Si o 84 Le ee PASSWORD E OOE EE H 85 5 4 TPAD DRESS E EE IEN RTE E EE 86 5 4 1 JPEE 87 5 4 2 IP Address configuration TELNET connection 88 5 4 3 IP Address configuration Devicelnstaller 90 6 TECHNICAL SPECTRE c moon nc cc con nenc coco oenccooe ee 92 ANNEX A OUTPUT CONNEC TUG s ccscscccccssccsscccscsscccescsscccecscsscssccsesecoecs 94 Document Revision Date Comment September 17 2012 November 30 2012 First release of document December LAT 2012 Minor changes and corrections April 9 2013 Interlock description changed October 30 2014 Manual graphic changed DiRAC User s Manual Safety information Warnings CAEN ELS will repair or replace any product within the guarantee period if the Guarantor declares that the product is defective due to workmanship or materials and has not been caused by mishandling negligence on behalf of the User accident or any abnormal conditions or operations Please read carefully the manual before operating any part of the instrument Z WARNINGZA High voltage inside do NOT open the boxes CAEN ELS doo declines all responsibilit
24. AC power supply unit is equipped with multiple internal protections hardware and software to avoid unwanted behaviors or eventual damages to the unit and also to let users run the power supply safely All hardware protections are installed into the DiRAC crate and some of them are here listed e CB CrowBar protection e phase fail e circuit breaker Several software protections some of them redundant are also implemented and here listed e CB Crowbar protection e heatsink over temperature e transformer over temperature e earth leakage detector e fan fail detection Protection redundancy i e hardware and software was especially implemented in order to guarantee a double level of reliability for the specified type of power supplies An overview of all available protections as well as a brief description of their behavior is presented in the following sections 3 2 1 2 CB CrowBar The A3660BS module protection against output over voltage conditions is guaranteed by a crowbar protection circuit that as in the case of the over current protection one has a double level of reliability 1 e both hardware and software This protection is hardware activated when the output voltage crosses the threshold of VB _threshold NV max AV 60V that is usually caused by a large o value on a large reactive load The crowbar circuit also guarantees dissipation of the residual energy stored in the load when
25. MSP r command returns the value of the power supply last stored set point current value Replies from the DiRAC power unit to this command are in the following form MSP value r where e value is the last stored o The MSP coma module condition ms a response in any e module is OFF ee bg Remote Control DiRAC User s Manual 5 3 19 MSR Command The MSR command it is the only read write command for the DiRAC power unit and it allows reading and setting of the value of the slew rate in A s of the power supply The reading command is structured as follows MSR r and the related reply format is MSR value r where value is actual slew rate value for the power supply A s thatis the content of the EEPROM cell 30 with a 5 digit precision The value of the slew rate can also be set between lower limit of O A s and upper limit of 1000 A s using the MSR command and adopting the following syntax MSR set_value r where set value is desired slew rate value A s The MSR setting command generates upon reception an acknowledgment i e AK r reply if the value is correctly set and with a NAK r if e the set value is incorrect e g out of limits e the module is in LOCAL mode Examples MSR reading example MSR r MSR 15 00000 r MSR setting example with a value out of limits MSR 13007 r NAK MSR setting example to a correct value
26. ads to a very widespread command list thus typical users may only need a small set of commands in order to run the DiRAC unit in a satisfying way 5 2 List of Commands The user available commands as well as a brief description and their read or write functionality are summarized in the following table O Remote Control Command HWRESET FDB MAC MGC MGLST MOFE MON MRESET MRF MRG MRI MRID MRM MRT MRTS MRV MRW MSP MSR MST MUP MWAVE MWAVEP MWAVER MWAVESTART MWAVESTOP MWF G Description Performs an hardware reset of the unit Feedback command Read MAC and IP addresses of the module Read ground leakage current value Read the main values and status of the module Turn the module OFF Turn the module ON Reset the module status register Read selected EEPROM field cell Read selected EEPROM value cell Read output current value Read module identification Set output current value ramp Read heatsink temperature Read transformer temperature Read output voltage value Read estimated active output power value Read last stored output current setpoint Read or write slew rate value Read module internal status register Update all EEPROM parameters Set waveform total number of points Set waveform single point Read stored waveform points Start waveform execution Stop waveform execution Write selected EEPROM field cell DiRAC User s Manual Read Write W St ep 7
27. alue Note this value can be configured writing EEPROM value cell 31 see MWF Command Section for more information 3 2 2 External Interlocks and Relay Contacts Each DiRAC power module has different configurable input interlocks and some output status signals bat are durectle available on one the rear panel interlock connector The DiRAC interlock connector pin index is summarized in Table 1 Pin Number Function 1 Interlock 1 2 Interlock 1 return 3 Interlock 2 4 Interlock 2 return 5 Interlock 3 6 Interlock 3 return 7 Interlock 4 8 Interlock 4 return 9 nc 10 nc 11 nc 12 nc 13 Solid state Relay contact 14 nc 15 Magnetic Relay NC TAP 8 DiRAC User s Manual DiRAC Description 16 Solid state Relay return 17 Magnetic Relay C TAP 18 Magnetic Relay NO TAP Table 1 Rear Interlock Connector Pinout The interlock connector is the same Weidmuller 18 pin male connector used in the SY3634 and SY3662 system crates and the pin index compatibility is maintained The corresponding pinout is shown in Figure 5 Figure 5 Interlock connector on DiRAC rear panel Please notice that all interlock pins are galvanically isolated from ground and outputs terminals nevertheless the absolute maximum voltage referred to ground that pins can sustain is 48V Note an external 24V voltage source is recommended to operate interlocks correctly Note The absolute maximum current that can be sunk by the output status relay
28. an be set by the on module encoder and its embedded menus After completing this operation there should an evidence of the power supply being in the desired LOCAL mode a black L character surrounded by a red rectangle appears on the upper left angle of the display installed in the crate an R character is displayed on the same angle when working in REMOTE mode The status of the mod le e g LOCAL REMOTE on power up is stored and recalled from the module internal memory so that each DiRAC unit powers up in the same state it was when it had been powered down 4 1 Encoder Each A3660BS module can be controlled by means of the rotary encoder placed on its front panel This encoder allows two basic actions e clockwise CW and counter clockwise CCW rotation in order to change selected menu lines or numbers e pushing in order to enter sub menus or to confirm The combination of the cited actions allows browsing the power supply menus to read or set desired information and parameters 4 2 Colour Display The embedded colour display allows users to visualize information about the DiRAC power supply status and to control the unit in order to use it locally it also allows switching to REMOTE mode operation Screens and pages of the display can be changed from the encoder through user friendly menus and sub menus 9 DiRAC User s Manual Local Control 4 2 1 Power up Page The DiRAC upon power up or power
29. derivative constant reserved Newton Raphson Iterations reserved Max Heatsink Temperature Max Transformer Temperature Serial Number reserved Calibration Date Identification reserved Slew Rate A s Earth Current Limit A Earth Current Gain reserved Regulation fault threshold A reserved Ripple fault threshold AJ reserved reserved Interlock Enable Disable Mask Interlock Activation State Mask Interlock 1 Intervention Time ms Interlock 2 Intervention Time ms Interlock 3 Intervention Time ms DiRAC Description Description Zero order current calibration coefficient 1 order current calibration coefficient 2 _order current calibration coefficient 3 _order current calibration coefficient Maximum settable current set point Zero order voltage calibration coefficient 1 order voltage calibration coefficient 2 _order voltage calibration coefficient 3 _order voltage calibration coefficient PID regulator proportional gain PID regulator integrative gain PID regulator derivative gain Number of iterations for inverse calibration Maximum heatsink temperature Maximum transformer temperature Module serial number Date of last calibration Module identification name Module slew rate value Maximum earth leakage current limit Earth current circuit gain value Maximum allowable regulation fault current Maximum allowable current ripple Enabling disabling external interlocks Definition of external interlocks active state Interven
30. dule output OFF 3 3 1 Value Section Cells Herein in order to correctly configure and check the power supply operation a brief description of the value section user definable cells is presented Imax cell 4 the value contained in this cell defines the maximum current A that a user can set to the DiRAC power supply unit This value need to be included between a lower limit OA and rated output current 0 1 A Kp cell 13 this value is the proportional gain coefficient of the internal digital PID regulator K cell 14 this value is the integral gain coefficient of the internal digital PID regulator Kp cell 15 this value is the derivative gain coefficient of the internal digital PID regulator Max Heatsink Temperature cell 20 this value C defines the temperature threshold above which the power supply generates an over temperature fault condition The temperature is directly measured in several different places inside the power unit and the maximum value among all these measured temperatures is taken into account Max Transformers Temperature cell 21 this value C defines the temperature threshold above which the power supply generates an over temperature fault condition The temperature is measured on the power transformers Identification cell 27 this value a string defines the DIRAC module identification name and can be read with the MRID r command
31. e Please note that the accuracy of these monitoring signals is 1 since they are directly hardware connected and thus not calibrated 3 1 2 Output Current and_Voltage Monitors The actual output current and output voltage values can be monitored from the same two coaxial connectors present on the DiRAC front panel In order to enable the monitoring signals it is necessary to put the SELECT switch to OUT position By doing this a scaled value of the actual output current and voltage are fed on the MON I and V coaxial connectors MON V SELECT MAX 0 oC The values that can be monitored on the coaxial LEMO connectors has to be interpreted as follows Ee 10 MONI Vour 10 MON_V where Jour and Vour are actual output current and output voltage respectively MON I and MON_V the scaled monitor versions that can be found on the coaxial connectors CR CR DiRAC Description DiRAC User s Manual The scalefactors between the real output values and the scaled monitor signals are the same as previously indicated for the case of the thresholds e 0 1 V A for the output current monitor e 0 1 V V for the output voltage monitor Example If the MAX_I signal on the on the respective coaxial connector is of 11 0V and the MAX_V signal of 1 5V then the corresponding output current for that DiRAC module is of 110A and of 15V for the output voltage Please note that the accuracy of these monitoring signals is around 1
32. ed by using the Devicelnstaller software An overview of the procedures to be followed using the just cited methods is herein presented DiRAC User s Manual Remote Control 5 4 1 IP Address configuration SIP command If the power supply IP address is know by the user it is possible to configure the new IP address by using the SIP command This operation must be performed when e the power supply is in REMOTE mode e the power supply is OFF it is necessary to disable the output with the MOFF command first for safety purposes e the sent IP address is correct If at least one of the three just cited conditions is not satisfied the power supply will not operate ap change in its IP address and will reply with a non acknowledgment command The format used to set the IP address must be as follows SIP ip_addr r If the DIRAC power supply actual IP address is known and there s an active connection to it the configuration can be performed for example as follows SIP 192 168 0 55 r AK r Obviously after the new IP is set the Ethernet module will reset and the connection to the host PC or device will be lost A new connection must be established to the new IP address e g 192 168 0 55 Remote Control DiRAC User s Manual 5 4 2 IP Address configuration TELNET connection If the power supply IP address is know by the user it is also possible to configure the new IP address by using a simple TELNET
33. el of the system crate as shown in Figure 2 A 4 switch DIP switch for general configurability and future developments is also present together with a LEMO coaxial input connector that allows controlling the unit with an external reference voltage source one of the DIP switch is used to select the full scale range of the analog input for the power supply to 5V or to 10V Voltage sensing terminals for future implementations of analog voltage mode regulation of the power supply are also present on the rear side of the unit eg Safety and Installation DiRAC User s Manual 2 Safety and Installation Please read carefully this general safety and installation information before using the product 2 1 General Safety Information This section contains the fundamental safety rules for the installation and operation of the system Read thoroughly this section before starting any procedure of installation or operation of the product Safety Terms and Symbols on the Product These terms may appear on the product e DANGER indicates an injury hazard immediately accessible as you read the marking e WARNING indicates an injury hazard not immediately accessible as you read the marking e CAUTION indicates a hazard to property including the product 2 2 Initial Inspection Prior to shipment this system was inspected and found free of mechanical or electrical defects Upon unpacking of the system inspect for any damage which may
34. enerated by an external interlock or an internal protection trip and the status register has not been reset Warning bit 2 this bit is set if the module is in a warning condition it is a logical or of all warning bits i e one of the cooling fans stopped working this bit is set in conjunction with bit 31 fan fail warning Please note that the setting of this bit just gives an indication to the users that a fan is not correctly working and needs to be replaced the module continues to work the over temperature faults still protect the DiRAC from damages from over heating The warning condition are bit 31 fan fail warning one of the cooling fans stopped working Please note that the setting of this bit just gives an indication to the users that a fan is not correctly working and needs to be replaced the module continues to work the over temperature faults still protect the DiRAC from damages from over heating bit 28 EEPROM read warning this bit is set when a parameter is not read correctly from the EEPROM memory in this case a default value is used for the firmware execution To clear this warning it s necessary to check the EEPROM content and reload the parameters with the command MUP bit 27 Xport Timeout warning this bit is set when the MAC address is not correctly read from the Xport device This warning does not OL DiRAC Description DiRAC User s Manual Local bit 3 t
35. ent reply is generated when e the module is in LOCAL mode e the module is ON it is necessary to Dm e module OFF first in order to perform a remote hardware reset Examples HWRESET example with the module in LOCAL mode HWRESET NAK HWRESET example with the module in REMOTE mode HWRESET AK r It is important to notice that the DiRAC power supply unit replies with an acknowledgment command AK r before resetting the internal hardware and firmware After reset Oe communication to the power supply module can be lost for a few seconds as a consequence of re initialization rs eg Remote Control DiRAC User s Manual 5 3 3 MAC Command The MAC r command returns both the MAC address and IP address of the connected A3660BS power supply in the following form MAC mac_addr ip_addr r eturns a response in any I204AD4ED5 O S _ DiRAC User s Manual Remote Control 5 3 4 MGC Command The MGC r command returns the readback value of the actual ground leakage current of the DiRAC power supply unit in the following form MGC value r where e value is the earth current value readback A If a Ground current fault occurs the MGC command will return the ground leakage current which caused the fault The MGC command being a reading command returns a response in any module condition e g local remote Examples MGC example for a 120mA earth leakage curre
36. er supply unit in LOCAL mode SIP 192 168 0 55 r NAK SIP example with an incorrect IP address SIP 192 168 0 324 r GE g NAK It is very important to notice that once the SIP command has been executed the user can communicate and get control of the power supply again only by opening a new TCP socket with the IP address that has just been set Remote Control DiRAC User s Manual 5 3 24 VER Command The VER r command returns information about the DiRAC power supply unit model and the currently installed firmware versions The response to a VER r command is in the following format VER DIRAC Model FPGA_ver r where e Model is the DiRAC power supply model e FPGA_ver is the FPGA firmware version currently installed on the module Please note that you can keep firmware version up to date by checking for updates upgrades on the website www caenels com caenels The VER command being a reading command returns a response in any module condition e g local remote Examples VER example VER r VER DIRAC 1 0v SE DiRAC User s Manual Remote Control 5 3 25 MWAVE Command The MWAVE has to be used to load current waveform points that can be subsequently executed the DiRAC module has the capability of executing a pre loaded waveform with a 1 ms update period i e 1 kHz update rate The correct format for this command is as follows MWAVE sample_num sample_value
37. ers to decide what interlocks to enable and what not the interlock tripping level i e LOW or HIGH and the time of intervention the time that an interlock signal has to be to the tripping level before generating a fault condition This information can be set and read from the module EEPROM An example of mating connectors for the interlocks are Weidmuller B2L 3 50 18 1800V9 SN BK BX model 3 2 21 Interlocks Enablmg Disabling Each external interlock on the DiRAC module can be enabled and disabled by writing to the interlock enable mask to the EEPROM cell 48 A value of 1 means that the interlock is enabled while a 0 value that the corresponding interlock is disabled The value to be written is the ASCII string formed by one hexadecimal digit that corresponds to the binary enabling disabling mask the four external interlocks are numbered from to 4 Example if only interlocks 2 and 4 need to be enabled the following command needs to be sent to the power supply after having un locked the password protection MWG 48 A r The sent string has to be so interpreted A 1 0 1 0 Interlock 4 Interlock 3 Interlock 2 Interlock 1 Enabled Disabled Enabled Disabled In order to make this command taking effect it is necessary to perform a MUP r Module Update Parameters command see MUP command section for further details 28 DiRAC User s Manual DiRAC D
38. ersion 6 1 0 0 90 DiRAC User s Manual Remote Control e Select Assign a specific IP address and then click Next Assign IP Address Assignment Method Would you like to specify the IP address or should the unit get its settings from a server out on the network Obtain an IP address automatically Assign a specific IP address TCP IP Tutorial Back Next gt Cancel Help e Complete the IP address field and click on Next Ki Assign IP Address IP Settings Please fill in the IP address subnet and gateway to assign the device The subnet will be filled in automatically as you type but please verify it for accuracy Incorrect values in any of the below fields can make it impossible for your device to communicate and can cause network disruption IP address 192 168 10 200 255 255 00 7 0 0 0 Subnet mask Default gateway Configuration information is not available for this device The subnet mask and default gateway will not be able to be set After the IP Address has been set successfully then return to this Assign IP Address wizard to set the subnet mask and default gateway lt Back Next gt Cancel Help e Click on the Assign button vi Assign IP Address se a ZNW Assignment Click the jar b to complete the IP address assignment e Wait for the assignment procedure to end and then click Finish
39. es to be recorded so that giving users more information permits a better investigation on the fault cause evaluation For example if the module has experienced a regulator fault and a crowbar protection intervention the home page bottom part of the screen will switch between the red strings REG FAULT and CROWBAR If the module it is not turned on and the output is disabled the home page screen should look like in Figure 9 AAA DiRAC User s Manual Local Control Module is OFF Figure 9 Home Page screen with module OFF Please push the encoder button in order to access the Menu Page thus exiting the Home Page menu OL 4 2 3 Menu Page The menu page is reachable by clicking the encoder button while being in the home page Through this page the users have access to all the necessary setting monitoring functions and sub menus of the power supply The first screen shown in the Menu Page is shown in Figure 10 Main menu Reset Module Local Remote Set Current Connectivity Figure 10 Menu Page screen The accessible sub menus from this page are herein listed note that the selected sub menu is lightened in 216en color e Module ON OFF Reset Module Local Remote Set Current Connectivity Global Stats Exit A set of two blue arrows one pointing upward and the other one downward are shown in the upper right corner of this page in order to indicate the presence of additional sub me
40. escription The MRG 48 r command returns a string containing the ASCII correspondent of the interlock enable mask and contains information about what interlocks are enabled and what are disabled 3 2 2 2 Interlocks Activation States Each DiRAC external interlock can be chosen to trip at a HIGH or a LOW logic level A value of 1 means that the interlock trips when the input signal to the corresponding interlock is shorted anda 0 that the corresponding interlock trips when the input is open The value to be written is the ASCII string formed by one hexadecimal digit that corresponds to the binary activation state mask the four external interlocks as for the interlock enable disable mask from 0 to 3 are numbered from to 4 Example consider that only interlocks 2 and 4 are enabled i e a A string is contained in the EEPROM cell 48 and interlock 2 needs to trip when the corresponding input signals are shorted LOW level while interlock 4 when its input is open HIGH level the value to be written to the EEPROM cell 49 is the following MWG 49 8 r The sent string has to be so interpreted 8 1 0 0 0 Interlock 4 Interlock 3 Interlock 2 Interlock 1 HIGH LOW LOW LOW In order to make this command taking effect it is necessary to perform a MUP r Module Update Parameters command see MUP command section for further details Content of the interlock enable di
41. for further details on password protected cells The correct form format for this command is as follows PASSWORD password r where e passwords the module password to unlock protected EEPROM cells Replies from the power supply are in the form AK r or NAK r this non acknowledgment reply is generated as it is for the MRM command when e the written password is incorrect Examples PASSWORD example with a wrong password PASSWORD lt elephant r NAK r PASSWORD example with the right password PASSWORD PS ADMIN r AK r The password to unlock password protected cells is PS ADMIN Remote Control DiRAC User s Manual 5 4 IP Address Configuration The easiest way to configure the DiRAC power supply unit IP address is to set it by the Connectivity menu on the unit LOCAL control i e encoder and display see section 4 2 5 for further details In other cases when accessibility to the power supply by the user is not possible there is the need to configure the IP address REMOTELY The situations can be mainly two e the actual power supply IP address is known by the user In these case the new IP address configuration can be performed with one of the two following methods o by using the SIP command see section 5 3 23 for further details o via basic Telnet connection e the actual power supply IP address is NOT known by the user In this case the new IP address configuration can be perform
42. gment reply is generated when e the total number of points fof_points is out of range e the DiRAC power unit is in LOCAL mode e the DIRAC power unit is executing a waveform Examples MWAVEP correct example MW AVEP 2000 AK r MWAVEP example with the module performing a waveform MWAVEP 2000 NAK 8 DiRAC User s Manual Remote Control 5 3 27 MWAVER Command The MWAVER command returns the value of the selected current waveform set point sample The value returned by this command is the same one that was previously stored with a MWAVE command use The correct format for this command is as follows MWAVER sample_num r where e sample_num is the index of the selected sample which value has to be returned The MWAVER command being a reading command returns a response in any module condition e g local remote except if sample_num is over the defined range Replies from the DiRAC power supply unit are in the following format MWAVER value r where e value is the current value stored in the selected sample Examples MWAVER example for a correct request MWAVER 264 r m MWAVER 42 45323 r MWAVER example for a sample_num value out of range MWAVER 180000 NAK Remote Control DiRAC User s Manual 5 3 28 MWAVESTART Command The MWAVESTART command is used to make the DiRAC power supply execute the pre defined loaded waveform The correct form format for this co
43. have occurred in transit The inspection should confirm that there is no exterior damage to the system such as broken knobs or connectors and that the front panels are not scratched or cracked Keep all packing material until the inspection has been completed If damage is detected file a claim with carrier immediately and notify CAEN ELS doo service personnel 3 DiRAC User s Manual Safety and Installation 2 3 Injury Precautions This section contains the fundamental safety rules for the installation and operation of the system in order to avoid injuries 2 3 1 Caution The following safety precautions must be observed during all phases of operation service and repair of this equipment Failure to comply with the safety precautions or warnings in this doeument violates safety standards of design manufacture and intended use of this equipment and may impair the built in protections within CAEN ELS doo shall not be liable for user s failure toxcomply with these requirements To avoid electrical shock or fire hazard do not apply a voltage to a load that is outside the range specified for that load Do Not Operate Without Covers To avoid electric shock or fire hazard do not operate this product with covers or panels removed Do Not Operate in Wet Damp Conditions To avoid electrical shock do not operate this product in wet or damp conditions Do Not Operate in an Explosive Atmosphere To avoid injury or fire hazard
44. he DiRAC power unit is in ON state and its output driver is enabled e RX LED the blue light toggles at every termination character reception Le carriage return r and it can also be interpreted as a communication heartbeat indicator e LINKED LED the green light indicates that the DiRAC module is connected to another DiRAC module via the SERVICE LINK connection on the rear side of the crate DiRAC modules of same ratings can work in parallel if correctly configured e FAULT LED the red light indicates that the DiRAC power supply has experienced a generic fault that can be either an internal protection trip or an external interlock intervention This light does not turn off after a fault until a local or a remote module reset has been performed e DIAG LED the white light it is modulated by an internal PWM counter that is internally serviced and reset by the control electronics at every diagnostic routine execution If this LED is not modulating its light the internal diagnostics it is not correctly executed by the module e AUX PS LED the green light indicates that the auxiliary power supply section voltages are present This LED should always be turned on if the module is OL DiRAC Description DiRAC User s Manual working correctly since the auxiliary power section that supplies the control electronics is directly connected to the AC mains inputs It is important to notice that the blue ON light and
45. he opposite direction if decreasing the maximum output current is desired The same procedure has to be followed on the MAX V control trimmer in order to obtain the similar behavior for the output voltage of the DIRAC module e g rotate in CW direction to increase the threshold and in CCW direction in order to decrease it In order to monitor the set maximum thresholds for the output current and voltage of the module the SELECT switch should be set to MAX position as shown in the previous figure By doing this a scaled value of the actual set thresholds is fed through the MON I and V coaxial connectors 20 DiRAC User s Manual DiRAC Description The values that can be monitored on the coaxial LEMO connectors has to be interpreted as follows Co 10 S MON I max Vour 10 MON_V where max lour and max Vour are the maximum thresholds set for the DiRAC module and MON_I and MON_YV the scaled monitor versions that can be found on the coaxial connectors for the current and voltage respectively The scalefactors between the real set thresholds and the scaled monitor versions are then respectively e 0 1 V A for the output current threshold e 0 1 V V for the output voltage threshold Example If the MAX_I signal on the on the respective coaxial connector is of 6 8V and the MAX_V signal of 2 6V then the corresponding hardware maximum output current threshold set for that DiRAC module is of 68A and of 26V for the output voltag
46. his bit is set when the DiRAC is set to work in LOCAL mode while this bit is cleared i e set to 0 when working in REMOTE mode Crowbar bit 6 this bit is set when the voltage at the output terminals of the module triggers the crowbar protection see Internal Protections section for further details This bit is also set when a kill signal from the external interlock 1 only if used in HW mode had taken place The setting of this bit implies the simultaneous setting of the fault bit Internal Over Temperature bit 7 this bit is set when the internal heatsink over temperature condition has been experienced The value that makes this fault trip is the maximum between the various ones measured inside the DiRAC unit The setting of this bit implies the simultaneous setting of the fault bit Transformer Over Temperature bit 8 this bit is set when the internal transformers over temperature condition has been experienced The value that makes this fault trip is the maximum between the various ones measured inside the DiRAC unit The setting of this bit implies the simultaneous setting of the fault bit Mains NOT OK bit 9 this bit is set when the AC mains have experienced a fault e g a phase loss phase under voltage or simply the front circuit breaker in 0 position As in other cases the setting of this bit implies the simultaneous setting of the fault bit Ground Current bit 10 this bi
47. iRAC Description DiRAC User s Manual 3 DIRAC Description A description of the DiRAC is herein presented with some in depth explanations on the basic power supply functionalities 3 1 DIRAC Front Pariel The DiRAC unit front panel is herein described as shown in Figure 3 e o CAENeis Circuit Breakers The circuit breaker placed on the front panel enables the supply of the power part of the converter from the three phase input This circuit breaker also act as protection for the DiRAC unit Figure 3 DiRAC front panel section When setting the circuit breaker to position 1 i e ON the yellow MAINS LED is lit up indicating that the power section of the converter is supplied from the AC mains An explanation of the front panel LEDs and functions is herein presented referring to the following Figure DiRAC User s Manual DiRAC Description ETHERNET MON V SELECT O 0 The DiRAC module front panel presents as the SY3634 and SY3662 systems the Ethernet RJ 45 communication socket the colour display and the encoder with pushbutton that allows controlling and navigating through the module menus The RST i e reset pushbutton is accessible through a small hole placed in the same DiRAC front panel and can be used by a small tip The LEDs that can be found on the control board front panel of the unit are hereafter described e ON LED the blue light indicates that t
48. items as interlocks identification names cells 50 through 53 Replies from the power supply are in the form AK r or NAK r this non acknowledgment reply is generated when the DiRAC unit is in LOCAL mode the cell number cell_num is out of range negative or greater than 511 cell_num or cell_content are empty strings the selected cell is password protected and password protection is not unlocked see PASSWORD r command for further details Examples MWF example with the DiRAC unit in LOCAL mode MWE 52 INTERLOCK_A i NAK MWF correct example after password is unlocked MWE 52 INTERLOCK_A r i AK r 1L DiRAC User s Manual Remote Control 5 3 31 MWG Command The MWG command lets users write a desired value item in a defined EEPROM cell The correct form format for this command is as follows MWG cell num cell_ content where e cell_num is the EEPROM celknumber e cell_ content is the ASCII content to be written to the EEPROM cell cell_num The on boardeEEPROM memory used to store module information as calibration parameters identification thresholds and divided in two sections field and value has 512 cells so that cel _num is limited between 0 and 511 writing operations containing cell values exceeding these limits obtain a non acknowledgment reply NAK r This value section of the EEPROM is used to store descriptive calibration paramete
49. le identification thresholds interlock naming and configuration etc Some of these fields can be user defined and are extremely useful in order to exactly fit the power supply to the specific application EEPROM memory size is 256Kbits and was divided into two main different sections each one consisting of 128Kbits e FIELD section e VALUE section This section division can be seen in Figure 6 Byte Byte address FIELD VALUE address 0x0000 lt 0x4000 0x0020 Ox01FF lt 0x41FF Figure 6 EEPROM memory sections The EEPROM cell size is 0x20 bytes i e 32 bytes and being the content stored in ASCII string format the total string can contain 31 bytes r termination character Some EEPROM cells are password protected and can be unlocked using the PASSWORD command see the corresponding section for further details The password used to unlock the write protected EEPROM cells of the modules is PS ADMIN The EEPROM value structure and the cell content description are presented in Table 2 O Ss DiRAC User s Manual 33 Cell G Ny An P Ww N BE 13 14 15 16 17 18 19 20 21 22 AAR 26 27 28 29 30 31 32 33225 50 37 38 39 40 46 47 48 49 50 51 52 Cell Caption Col_set Cl set Col set Cl set ES Co read CN read CN read CN read reserved Kp proportional constant K integral constant Kp
50. lue is the temperature value C Celsius measured on the internal heatsink The MRT command being a reading command returns a response in any module condition e g local remote Examples MRT example MRT r MRT 42 1 r OL Remote Control DiRAC User s Manual 5 3 15 MRTS Command The MRTS r command returns the maximum value of the temperatures among the ones measured on the internal transformers Even if the internal ADCs have a 16 bit resolution this value is presented to the user with a 0 1 C 0 1 K resolution The module internal logic compares the temperature values measured and then selects the maximum of these values thus giving an indication on the hottest part of the DiRAC transformers Replies from the DiRAC power supply Io us command are in the following form MRTS value r where e value is the temperature value C Celsius measured on the internal transformers The MRTS command being a reading command returns a response in any module condition e g local remote Examples MRTT example MRTS r MRTS 42 1 r 8 DiRAC User s Manual Remote Control 5 3 16 MRV Command The MRV r command returns the readback value of the power supply actual output voltage measured at the DiRAC output terminals As for the output current voltage readback values have a 20 bit resolution 19 bit sign and they are presented with a 5 digit precision
51. mmand is as follows MWAVESTART cycles r where e cycles is the total number of periods dat Oe waveform has to be executed its period length can be defined using the MWAVEP command The powers supply can execute the current waveform for a fixed number of periods ranging from 1 to 1440 equal to a 24 hour total execution time for a 60000 points waveform The infinite execution of the waveform is also possible and it is obtained by passing to power supply a 1value so that MWAVESTART 1 r repeats the waveform for an INFINITE number of cycles Replies from the power supply are in the form AK r or NAK r this non acknowledgment reply is generated as it is for the MRM command when e the power unit is in LOCAL mode e the power unit is still performing a ramp it is necessary to wait for the power supply to end the previous ramp or it is performing a waveform e the power unit is OFF it is necessary to turn it ON first e the number of cycles value is out of range i e greater than 1440 Examples MWAVESTART example with an excessive number of cycles MWAVESTART 1458 r NAK MWAVESTART example that starts an infinite waveform MWAVESTART 1 r AK r MWAVESTART example that repeats the waveform for 20 cycles MWAVESTART 20 r AK r DiRAC User s Manual Remote Control 5 3 29 MWAVESTOP Command The MWAVESTOP r stops the execution of a running waveform
52. module is ON and regulating MRI vr MRI 48 34563 r 8 DiRAC User s Manual Remote Control 5 3 12 MRID Command The MRID r command returns the DiRAC power supply unit identification name as a string The reply from the power supply contains the value stored in cell 27 of the module EEPROM and it assumes the following format MRID module_id v where e module_id is the module identification stored in non volatile memory as an ASCII string This command is equivalent to the MRG 27 r command being the cited cell content the user selected module identification name The MRID command being a reading command returns a response in any module condition e g local remote Examples MRID example with the module identification ChicaneMag5 2 MRID r e MRID CHICANEMAGS 2 r OL Remote Control DiRAC User s Manual 5 3 13 MRM Command The MRM command is used to set the value of the desired output current set point MRM value r where e value is the output current desired set point A The difference between the MWI r command and the MRM r command is that the first one generates a direct change in output current characterized by the PID regulator parameters slew rate value is discarded and the command is ideally suited for small output current changes and feedback purposes while be second one makes the power supply go from the previous to the actual curre
53. n self regulated fans Connection Ethernet TCP IP UDP Extra Features Soft Start mode Point by Point Current Waveform Loading User definable interlock thresholds active levels and timings FPGA Firmware Remote Updates User settable Slew Rate value Dimensions 19 3U high Euro mechanics rack minimum regulation current A depending on the model and output ratings 93 Annex A Output Connectors DiRAC User s Manual Annex A Output Connectors Connections to the load from the DiRAC must be carried out using M8 or M10 screws on the output terminals The corresponding signals are presented in Figure 15 Figure 15 output connection terminals The corresponding pinout is e pin 1 positive output terminal e pin 2 negative output terminal A rigid plastic insulation transparent cover is used in order to guarantee major safety on the high power contacts of the DiRAC power supply unit after installation
54. nd is as follows MWI value r where e value is the desired output current value A Replies from the power supply are in the form AK r or NAK r this non acknowledgment reply is generated as it is for the MRM command when e the set value is out of range the maximum settable current value is user defined and stored in EEPROM cell 4 e the power unit is OFF it is necessary to turn the module ON first e the power unit is in LOCAL mode If the MWI command is executed during the ramp or waveform generation the ramp waveform execution will be stopped and the new set point will be applied Examples MWI example with the module OFF MWI 48 55679 r NAK MWI example with the module ON and already regulating MWI 13 50 r AK r It is very important to notice that even if the module is ON and regulating the output current correctly an MWI command can generate a Crowbar intervention and a consequent fault if the current change step is too large especially for large inductive loads this is due to the large di t dt that generates voltage peaks oo DiRAC User s Manual Remote Control 5 3 34 PASSWORD Command The PASSWORD command can be used to unlock the EEPROM cells that are password protected in order not to let inexperienced users to change some power supply parameters that might compromise the correct operation of the module See EEPROM Memory Mapping section
55. nectivity IP address Figure 12 Connectivity screen After clicking the Set text he power supply should display a window shown in Figure 13 showing to the users that the new IP address is configuring The set operation can be performed only by setting the module to LOCAL mode Setting new IP Please wait Figure 13 screenshot shown when updating IP address It is very important to notice that once the Set text has been clicked the user can remotely communicate and get control of the power supply again only by opening a new TCP socket to the IP that has just been set OL Local Control DiRAC User s Manual 4 2 6 Global Stats Page The Global Stats page allows users to check and monitor some of the ancillary features of the DiRAC power supply module as the installed firmware version slew rate settings etc An example on how the Global Stats page of the module is presented can be seen in Figure 14 T Heat sink 50 5 C SR 0010 0 A s Figure 14 Global Stats screen This page can be browsed by rotapnng he encoder and can be exited at any moment by clicking on the same encoder pushbutton this action sends the user back to the Menu Page The features that can be displayed on this menu are the following e Firmware the installed DiRAC firmware version e T Heatsink the maximum measured heatsink temperature C please note that several temperatures are measured on the board e
56. nt MGC r MGC 0 12 r OL Remote Control DiRAC User s Manual 5 3 5 MGLST Command The MGLST r command is a general purpose reading command that returns some useful readback values as well as the power supply global status Replies from the DiRAC module are in the following form MGLST 1_out v_out status 1_gnd 1_set r where e i_out is the output current value readback A e v_out is the output voltage value readback V e status is the ASCII representation composed by eight hexadecimal digits of power supply 32 bit status register e i_gnd is the ground leakage current readback A e j_set is the last stored output current setpoint A The MGLST command being a reading command returns a response in any module condition e g local remote Examples MGLST example for a DiRAC power supply module set to 73 0355A MGLST MGLST 73 0356 5 4321 0003 0 00 13 0355 r DiRAC User s Manual Remote Control 5 3 6 MOFF Command The MOFF r command is intended to turn off the DiRAC unit power section thus not allowing any current to flow through the output current terminals The MOFF command automatically sets output current to OA zero with a factory default slew rate before disabling the power part this is done in order to avoid voltage overshoots that would be anyway smoothed and limited by the crowbar and over voltage clamping protections especially for high currents and
57. nt value performing a ramp defined by a slew rate in A s stored in the EEPROM cell 30 The DiRAC power supply unit responds with acknowledgment command AK r if the value is correctly set and with a NAK vr if e the set value is out of range the maximum settable current value is user defined and stored in EEPROM cell 4 e the power supply is OFF it is necessary to turn the module ON first e the power supply is in LOCAL mode If the MRM command is executed during the ramp or waveform generation the ramp waveform execution will be stopped and the new ramp will be performed to the new set point Examples MRM example with the DiRAC power supply unit in OFF state MRM 113 872 r NAK MRM example with the DiRAC power supply unit turned ON and not ramping nor performing a waveform MRM 113 872 r a AK r 8 DiRAC User s Manual Remote Control 5 3 14 MRT Command The MRT command returns the maximum value of the temperatures among the ones measured on the internal heatsinks Even if the internal ADCs have a 16 bit resolution this value is presented to the user with a 0 1 C 0 1 K resolution The module internal logic compares the temperature values measured and then selects the maximum of these values thus giving an indication on the hottest part of the DiRAC heatsink Replies from the DiRAC power supply Io us command are in the following form MRT value r where e va
58. ntrolled power units The DiRAC anyhow contains also an analog control network for both output current and output voltage Obviously in order to use the power supply with an external analog reference the digital control of the unit should be disabled The full scale of the external reference signal can be set by the first dip switch position also into the ANALOG IN input 5VFS to have a 0 5V full scale dynamic range 10VFS to have a0 10V full scale dynamic range When working in analog current controlled mode feeding a OV external signal will give a OA output current on the output and feeding a 5V signal if the dip switch is set to SVES position will give the rated maximum current 120A for example for the DiRAC PS120050 unit and 135A for the PS135040 one The four input interlocks from 0 to 3 are present on the Weidmueller 18 pin connectors please see the interlock section for further details All interlocks as in SY3634 and SY3662 CAENels power supply series are dry contact type Interlock 0 can also be configured to act in a firmware mode FW or in hardware mode HW This functionality can be selected by moving the corresponding dip switch contact to the FW or the HW position Please note that this only refers to Interlock 0 Solid state relay contacts and magnetic type dual contacts are found on the same interlock connector GO DiRAC Description DiRAC User s Manual 3 2 1 Internal Protections Each DiR
59. nu voices in the selected direction Users can simply browse through this menu by rotating the encoder a CW rotation makes the selection going downward in the menu while a CCW one in the opposite direction The selection of Module ON OFF Reset Module or Local Remote has an immediate effect on the DiRAC power supply unit The Set Current Connectivity or Global Stats selection gives access to their respective sub menus while the Exit selection brings users back to the Home menu The selection of the last line of this menu i e Exit takes the users back to the Home Monitor Page Example by clicking the Module ON OFF line the module if working in LOCAL mode and into correct operation i e no faults it should change its output condition i e turns on if it was off and vice versa ooo DiRAC User s Manual Local Control 4 2 3 1 Module ON OFF The Module ON OFF choice on the main menu allows users to change the DiRAC power supply status from ON to OFF and vice versa The DiRAC module obviously can be turned on only if it is not experiencing a fault condition or a fault condition has been already reset and it is working in LOCAL mode 4 2 3 2 Reset Module The Reset Module selection on the Main Menu allows users to reset fault conditions on the power supply unit The reset takes effect only if the module is working in LOCAL mode 4 2 3 3 Local Remote The Local Remote choice on the main menu allows users to change
60. r where e sample_num is sample number of the waveform ranging from 0 i e the first sample tothe last sample number defined by or points 1 see MWAVEP command for details e sample_value is the sample current set point value A Replies from the power supply are in the form AK r or NAK r this non acknowledgment reply is generated when e the DIRAC power supply unit is in LOCAL mode e the DIRAC power supply unit is executing a waveform e the sample_num value is greater than the one defined for the number of points of the pre loaded waveform by a MWAVEP command e the sample_value of the current is greater than the maximum value defined for the settable current defined in EEPROM value cell 4 Examples MWAVE correct example MWAVE 15 46 32255 r AK r MWAVE example with a sample_num greater than the waveform length MWAVEP MWAVE 15 46 32255 r NAK OL Remote Control DiRAC User s Manual 5 3 26 MWAVEP Command The MWAVEP command defines the maximum number of points i e length of a pre loaded point by point current waveform The correct format for this command is as follows MWAVEP tot_points r where e tot_points is the total number of points of the waveform ranging from 0 Le no points to 60000 i e 60 second waveform Replies from the power supply are in the form AK r or NAK r this non acknowled
61. r supply is ON it is necessary to shut down the channel with MOFF command first Examples MUP example with the power supply OFF and in REMOTE mode MUP r i AK r MUP example with the power supply ON and or in LOCAL mode MUP r 4 NAK r 9 DiRAC User s Manual Remote Control 5 3 23 SIP Command The SIP command allows setting remotely the DiRAC power supply module IP address In order to set a new IP address to a module it is necessary to know the actual one this is possible by checking the Connectivity menu on the local color display of the module or by using the Devicelnstaller software that can be found at www lantronix com The correct format syntax for this command is SIP ip_addr r where e ip_addr is desired new IP address for the connected module is formed by four decimal numbers each ranging from 0 to 255 separated by dots Replies from the power supply are in the form AK r or NAK r this non acknowledgment reply is generated when the DiRAC power unit is in LOCAL mode the DiRAC power unit is ON it is necessary to disable the output power with the MOFF command first for safety purposes e the sent IP address is incorrect Examples SIP example with a correct IP address SIP 192 168 0 55 r AK r After this command the Ethernet module on the DiRAC power supply unit re initializes and connection to the host is lost SIP example with the pow
62. resholds interlock information etc and other user definable factors For more information on how to write parameters in the value area of the memory please refer to MWG Command section Replies from the DiRAC power supply unit are in the following format Cell Content where e cell_content is the cell_num content in an ASCII representation The MRG command being a reading command returns a response in any module condition e g local remote this reply ts NAK r also if the memory cell is empty Examples MRG example with cell_num out of limits MRG 675 r NAK MRG example for cell 31 containing earth current threshold A MRG 3 1 r i 0 5v MRG example for cell 4 containing the maximum settable current value A MRG 4 r 82 524 r Remote Control DiRAC User s Manual 5 3 11 MRI Command The MRI r command returns the readback value of the power supply actual output current Current readback values have a 20 bit resolution 19 bit sign and they are presented with a 5 digit precision Replies from the power supply A3660BS to this command are in the following form MRI value r where e value is the output current value readback A The MRI command being a reading command returns a response in any module condition e g local remote Examples MRI example when the module is OFF MRI vr MRI 0 00150 MRI example when the DiRAC power
63. rs identification thresholds etc and some cells are password protected see the EEPROM Memory Mapping section to check what cells are protected and what are not Replies from the power supply are in the form AK r or NAK r this non acknowledgment reply is generated when the DiRAC unit is in LOCAL mode the cell number ce _num is out of range negative or greater than 511 cell_num or cell_content are empty strings the selected cell is password protected and password protection is not unlocked see PASSWORD r command for further details Examples MWG example with the DiRAC module in LOCAL mode MWG 5 2 INTERLOCK_A g NAK MWG example of a correct write operation cell 13 is not password protected MWG 13 0 055 r i AK r MWG example cell 1 is password protected and password not unlocked MWG 1 15 234 r NAK Remote Control DiRAC User s Manual 5 3 33 MWI Command The MWI command can be used to set the output current value and it is used when fast set point changes are needed The use of this command is alternative to the MRM Module RaMping the power supply reaches the desired output current value just using the PID regulator parameters without ramping with the pre defined slew rate to the new set point This command is usually needed when running feedback related applications and ONLY for small changes in the output current The correct format for this comma
64. s solid state relay pins 13 16 and magnetic relay pins 15 17 18 is 100mA Interlock 1 the displayed interlock name shown on the front display can be changed with the user requirements see MWF command and Memory mapping sections for further details is can be activated when pin 1 and return pin 2 are shorted or when the contacts are open depends on user configuration The same behavior can be obtained for all other interlocks Interlock 1 has also a particular feature it can be directly hardware activated directly in order to shut the module power part off This can be done by setting the corresponding dip switch to HW position The interlock circuit when using this interlock in the hardware mode is a simple opto coupler input as shown in the following diagram Interlock 0 Module kill O DiRAC Description DiRAC User s Manual The killing action of this interlock takes place when the input photodiode is supplied and the relative photo transistor is illuminated so that this signal can be interpreted as a true kill signal The magnetic relay provides the Output status of the module when ON the Normally Closed contact NC pin 15 switch opens and the Normally Open contact NO pin 18 switch closes referring to the COM contact i e pin 17 Solid State Relay contacts are also accessible between the SSR pin 13 and SSR pin 16 signals The configurability of the DiRAC modules allows us
65. s a usual need for an interlock in case of the water cooling system fault Let us consider a water flow switch that by choice can be connected to interlock 2 of the DiRAC interlock connector on the rear panel Water flow switch signals needs to be connected between pins 5 and 6 of the interlock connector see Figure 5 In order to activate only interlock 2 the following command needs to be sent to the power supply MWG 48 2 r A correct operation of the magnet cooling keeps the interlock input pins shorted while a fault has to be generated when the input becomes open the interlock 2 activation level needs to be set to HIGH with the following command MWG 49 2 r The possible presence of air bubbles that may generate undesired false faults and some voltage spikes on the interlock input contacts generates the need for a hysteresis on the interlock level this can be obtained by simply setting the interlock 2 intervention time to a few seconds 4s for example 1 e 4000ms in the following way 9 DiRAC User s Manual DiRAC Description MWG 51 4000 7 The previous settings do not become active until a MUP r Module Update Parameters command is sent to the power supply module and a AK r response has been received DiRAC Description DiRAC User s Manual 3 3 EEPROM Memory Mapping Each DiRAC power supply unit has an on board EEPROM memory that stores all information about calibration parameters modu
66. s power supply is designed for indoor use and in area with low condensation DiRAC User s Manual The following table shows the general environmental requirements for a correct operation of the instrument Environmental Conditions Requirements Operating Temperature Operating Humidity Storage Temperature Storage Humidity 5 C to 40 C 30 to 85 RH non condensing 10 C to 60 C 5 to 90 RH non condensing Introduction DiRAC User s Manual 1 Introduction This chapter describes the general characteristics and main features of the DiRAC monopolar power supply unit series 1 1 DiRAC Overview The DiRAC power unit series is based on the recent AC DC three level ZVS converter topology and it is composed of a PFC stage combined with a buck converter into a single stage These units are rated at a 6 kW output power and are available with different ratings for current and voltage e 120A S0V PS120050 135A 40V PS135040 The DiRAC units also are available in two different versions for the three phase input voltage e 208 V AC A version e 400 V AC E version The resonant nature of this power supply guarantees very high efficiency a crucial factor to take into account when maintaining into operation a large number of power supplies in the same facility The current control loop of the DiRAC as for all other CAENels power supplies is completely digital in order
67. sable mask i e EEPROM cell 48 overrides the content of the cell 49 so that the values contained in cell 49 are discarded if the corresponding bit in cell 48 is 0 and the interlock is disabled The MRG 49 r command returns a string containing the ASCII correspondent of the interlock enable mask and contains information about what interlocks are activated at a LOW state and what are activated at a HIGH state 3 2 2 3 Interlocks Intervention Time The time of intervention for each enabled interlock on any DiRAC power supply unit can be chosen independently with a 1 ms resolution OL DiRAC Description DiRAC User s Manual EEPROM cells from 50 to 53 contain information on how long an interlock input signal needs to be at its activation level before tripping and thus generating a fault condition Interlock 1 intervention time is stored into EEPROM cell 50 while interlock 4 into EEPROM cell 53 Example consider that interlock 4 needs to trip only after 100ms it has reached its activation level The value to be written into EEPROM memory is the following MWG 53 100 In order to make this command taking effect it is necessary to perform a MUP r Module Update Parameters command see MUP command section for further details Note values for intervention time have to be included between O and 10000 i e 10 seconds 3 2 24 Interlock Configuration Example Magnets can be water cooled and there i
68. seaeceseceesenssenaceceecees 32 LS Ae a EE eeh 35 3 4 S AUS ER E A E EE 36 d LOCAL serete ee 40 4 1 ENCODER 2 40 4 2 COLOUR Lusp ZE een A0 4 2 1 Power up Page EE nes ooe 41 4 2 2 Home Monitor Page 20 0 00 sccccccccsssseccssscescecssneseessesssecsenes 42 4 2 3 Menu POE nn ot ramadan 44 223 1 Mod le ON OFF ee 45 4 2 3 2 Reset Module 0 cccccccccccsesessssssssssssssssssssssssssssssssssssssesesesesesseeeees 45 ADB 3 Local Remote eierniie inner EEN 45 4 24 Set CUCM POS 46 4 22 e ER 4 2 6 ee Stats Page ee 48 Bs REMOTE CONTROL nseessee son poeren nno aan a n aasia 49 5 1 PRELIMINARY INFORMATION 49 5 2 LAST GE COMMANDS faci na dan entoure nee 49 5 3 COMMANDS OVERVIEW ssssssssssseesseseesssseessssreressterersrerrsseeosserresserosserrreserers 51 53 FDB Commande 52 5 3 2 HWRESET Commande 55 3 3 3 MAC Command sais cen a and net de md aie 56 334 MGC COMM amino 57 5 3 5 MGLST Commande 58 5 3 6 MOFEF Commande 59 33 7 MON Command sessirnar EEA assassin eet 60 5 3 8 MRESET ees 6l 5 3 9 MRF Commande 62 5 3 10 MRG COMMANA ne Weieesscececcsscccccccccssssssscsssccsecssssssstsesesseceseees 63 5 3 11 MRI Command EE 64 5 3 12 MRID Comge WEE 65 5 3 13 MRM Ge WEE 66 OR EEE e WEE 67 5 3 15 I o on nooo o 68 5 3 LOTIR TCO GHG Ge ee et De 69 ee 70 5 3 18 CSIP COTO en 71 COS TT nn ne im 72 oS Command jj if 73 5 3
69. since they are directly hardware connected and thus not calibrated 3 2 DiRA Rear Panel The DiRAC rear panel is presented in Figure 4 7 P A warnine HIGH POWER Figure 4 DiRAC rear panel view The power supply unit has on its back the three phase input cable no neutral is required and an earth connection terminal behind that Please note that the earth terminal is available only if an extra connection to earth is required but earth conductor is already connected to the chassis from the three phase input connection Cooling aperture for air outlet are also present throughout the whole panel Module output connection terminals are placed in the center of the rear panel and in order to fix these connections to the load e g magnet a M8 or M10 screw can be used A detailed section of the DiRAC rear functionalities is hereafter shown OT DiRAC User s Manual DiRAC Description WE SERVICE LINK sven ia ale oft 2 3 mmm SE x s eg k The ANALOG IN coaxial connector is used in order Io control the power supply from an external voltage source The DiRAC modules are digitally controlled power supply units so that the entire handling it is performed via the remote Ethernet connection The control loop is digital i e the set point reference is given by the internal Analog to Digital Converter ADC and not by a Digital to Analog Converter DAC as it is for analog co
70. some example annotations the correct interpretation for these examples is as follows Command sent TO the power supply l l Reply FROM the power supply D OL Remote Control DiRAC User s Manual 5 3 1 FDB Command The FDB command is a custom command that was especially implemented in order to minimize traffic on the Ethernet communication socket and it has a dedicated request reply structure The feedback command syntax is as follows FDB set_reg i_set v where e set_reg is the setting register of the power supply 8 bit wide e i_set is the desired output current setpoint value A The power supply reply after a FDB command it is in the following format PDB status reet set i_read r where e status_reg is the 32 bit wide status register of the PS formatted in an hexadecimal string this status string has a fixed length of 8 byte ei set is the string containing the output current desired setpoint value string length is 9 bytes i e 8 characters sign 3 integers 4 decimal digits eg 1 02A it is returned as 01 0200 e i_read is the output current readback string its length is equal to 9 bytes sign 3 integers 4 decimal digits The status_reg structure is presented in the following table and in section 3 4 DiRAC Module Status Register 32 bit Cell Caption FAN FAIL WARNING DCCT FAULT OPEN LOOP OPERATION EEPROM PARAM READ WARNING reserved EXTERNAL INTERLOCKS 4 1
71. t 2 8 Part Replacement and Modifications Always disconnect power plugs discharge circuits and remove external voltage source prior to fuse replacement wait 5 minutes at least Other parts substitutions and modifications are allowed by authorized CAEN ELS d o o service personnel only 2 9 Installation Instructions Follow these instructions in order to correctly install the DiRAC power supply unit Please execute all these operations with the AC power main plugs disconnected 9 DiRAC User s Manual Safety and Installation Connect the interlock mating connector in its relevant socket wire towards your loads The interlock connector can be connected to the desired interlock sources directly involved in that particular unit operation For further interlock information and pinout please refer to section 3 2 2 The DC output terminals see Annex A Output Connectors for further information on how to connect them are to be directly connected to the load e g magnet A M8 or M10 screw can be used in order to connect the load terminals to the DiRAC output connections It is necessary to remove the plastic protection transparent cover in order to connect the load terminals to the DiRAC power supply unit Now you can connect the three phase AC power connector to the mains network in order to power up the unit Please note that the AC input requires the three phases and the earth connections neutral is not necessary OO D
72. t bit EEPROM parameters read warning bit 28 this bit is set when a parameter is not read correctly from the EEPROM memory in this case the default value is used for the firmware execution To clear this warning it is necessary to fix the EEPROM content and reload the parameters with the MUP command Open Loop Operation bit 29 this bit is set when the A3660BS module works in open loop mode This mode is debugging and testing feature and it allows to set the duty cycle of the module from 0 07 u e 7 to 0 935 i e 93 5 DCCT Fault bit 30 this bit is set when the internal DCCT used for output current control has experienced a fault The setting of this bit implies the simultaneous setting of the fault bit Fan Fail Warning bit 31 this bit is set when at least one of the cooling fans installed on the DiRAC module is not correctly working The setting of this bit is just an indication of the DiRAC module needing maintenance and implies the simultaneous setting of bit 2 Warning but does not turn neither off the module nor sets a fault condition rs eg Local Control DiRAC User s Manual 4 Local Control This chapter describes the local control functionalities that are provided on each DiRAC power supply module and some useful information on how to use it Each DiRAC module can_be operated independently in LOCAL or REMOTE mode the switching between the two modes of operations c
73. t is set when a fault generated by an excessive leakage current to ground has been experienced The setting of this bit implies the simultaneous setting of the fault bit Regulator Fault bit 11 this bit is set when a regulation fault is experienced The setting of this bitimplies the simultaneous setting of the fault bit Ramp Execution Flag bit 12 this bit is set when the DiRAC module is performing a ramp to a new set point After the ramp is finished and the new set point is reached this flag is cleared Turning Off bit 13 this bit is set while the DiRAC module is turning off The DiRAC power supply module before disabling the output power stage ramp down to OA zero with a factory defined slew rate of 100A s Waveform Execution Flag bit 4 this bit is set when the DiRAC module is performing a current waveform see Waveform Execution section for further details Ripple Fault bit 15 this bit is set when an excessive current ripple on the output current is measured by the internal logic The setting of this bit implies the simultaneous setting of the fault bit External Interlocks bit 6 19 these bits are set when the corresponding enabled external interlocks trip These bits do not give any information about the O 1L DiRAC User s Manual DiRAC Description activation state of the interlock signals The setting of anyone of these bits implies the simultaneous setting of the faul
74. the red FAULT light cannot be turned on at the same moment because the module cannot correctly regulate output current if a fault is experienced and the output stage of the power supply is disabled The MAINS yellow LED also present on the module front panel indicates that the power section of the DiRAC is correctly supplied this does NOT indicate that the output is enabled this last information is given by the ON indicator The MAINS LED is turned off in any of the following cases e the circuit breaker on the front panel is in 0 i e OFF position e one of the AC input phases is missing e the voltage level on the input AC is too low 1 e not within indicated ratings Four 4 cooling fan holes are also present on the module front panel in order to guarantee correct front to rear air flow 3 1 1 Maximum Output Current and Voltage Thresholds One particular feature of the DiRAC modules is represented by the possibility of setting maximum hardware thresholds for output current and output voltage These values can be set via two trimmers accessible via a small screwdriver and can be monitored by two signals fed to two coaxial LEMO connectors Thresholds can be set via the MAX I and V trimmers as shown in the following figur MON V SELECT MAX i g 1 v In order to increase the maximum output current threshold of the DiRAC module it is necessary to rotate the MAX I trimmer in the clockwise CW direction and in t
75. tion time for interlock 1 Intervention time for interlock 2 Intervention time for interlock 3 O DiRAC Description DiRAC User s Manual 53 Interlock 4 Intervention Time ms Intervention time for interlock 4 54 59 reserved 60 Time before regulation check s Time before the regulation check starts s 61 Regulation calc window size s Window size for regulation calculation s 62 64 reserved 65 Time before ripple check s Time before the ripple regulation starts s 66 Ripple calc window size s Window size for ripple calculation s Table 2 EEPROM Value section Please note that cells marked in blue are password protected cells marked in green are not accessible by a standard user factory reserved All settable parameters need to be updated in order to take immediate effect on the module operation a MUP r command needs to be sent to the DiRAC module after all parameters have been set by MWG commands The EEPROM field structure and the cell content description are presented in Table 3 Cell Cell Caption Description 0 49 reserved 50 Interlock 1 identification Interlock 1 identification name string 51 Interlock 2 identification Interlock 2 identification name string 52 Interloek 3 identification Interlock 3 identification name string 53 Interlock 4 identification Interlock 4 identification name string Table 3 EEPROM Field section Please note that cells marked in blue are
76. to guarantee the same configurability and ease of tuning to any load condition resistive and inductive parts A new feature of this unit is the current control algorithm which is performed directly by the on board FPGA the parallel nature of the computation allows to greatly reducing time delays in the feedback loop Output current setting is performed by the use of a DCCT DC Current Transformer that presents high long term stability good bandwidth low noise and extremely low TC Temperature Coefficient The use of state of the art SAR ADCs for current and voltage sensing guarantees a reduced group delay and thus higher bandwidth Internal interlocks and protections are redundant and distributed inside the power supply unit e g the temperature is monitored by six different sensors placed in different sections of the board and the internal heatsinks 3 DiRAC User s Manual Introduction The control board of the unit hosting the FPGA the diagnostic ADCs communication sections local control display managing and other ancillary parts is the same used for the SY3634 and SY3662 system modules Remote communication is guaranteed by means of a standard RJ 45 Ethernet 10 100 auto sensing socket accessible from the unit front panel the power supply can also be locally monitored and controlled via an encoder and a graphic color display featuring user friendly menus Mechanical dimensions of the unit are 3U x 19 x 58cm 62cm
77. wer supplies can be connected to a global LAN or point to point recommended in order to obtain minimum delays maximum speed performance and to avoid possible communication problems Please note that for a point to point direct connection a twisted Ethernet cable must be used The next few steps must be followed in order to assign a new IP address to the module e Connect to the desired DiRAC module with a twisted Ethernet cable e Verify that the Link LED on the RJ45 connector is turned on amber for a 10Mbps connection or green for a 100Mbps connection e Launch the Devicelnstaller program e Select the XPort device where you want to change the IP address S Lantronix Devicelnstaller 4 1 0 3 File Edit Yiew Device Tools Help re Search Assign IP Upgrade Lantronix Devices 1 device s Device Details Web Configuration Telnet Configuration ee Local Area Connection 140 105 8 160 t Le YPI S 1 0 lt lt EE Propst Name Group Comments Device Family Port Type Port 03 ID Hardware Address 00 20 44 93 F6 86 Firmware Version 6 10 Extended Firmware Version 6 1 0 0 ani Devices 1 device s Device Details Web Configuration Telnet Configuration ae Local Area Connection 140 105 8 160 3 6 Port LA Ge XPo t 03 firmware v6 1 0 0 P EE so Name Group Comments Device Family Port Type Port 03 ID x5 Hardware Address 00 20 44 93 F6 86 Firmware Version 6 10 Extended Firmware V
78. y for damages or injuries caused by an improper use of the Modules due to negligence on behalf of the User It is strongly recommended to read thoroughly this User s Manual before any kind of operation CAEN ELS d o o reserves the right to change partially or entirely the contents of this Manual at any time and without giving prior notice Disposal of the Product The product must never be dumped in the Municipal Waste Please check your local regulations for disposal of electronics products DiRAC User s Manual Read over the instruction manual carefully before using the instrument The following precautions should be strictly observed before using DiRAC units Do not use this product in any manner not specified by the manufacturer The protective features of this product may be impaired if it is used in a manner not specified in this manual e Do notuse the unit if it is damaged Before you use the device inspect the instrument for possible cracks or breaks before each use e Do not operate the unit around explosives gas vapor or dust e Always use the unit with the cables provided e Turn off the unit before establishing any connection e Do not operate the unit with the cover removed or loosened e Do not install substitute parts or perform any unauthorized modification to the product e Return the product to the manufacturer for service and repair to ensure that safety features are maintained CAUTION e Thi

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