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Caen ELS LiAM 6005 User Manual

Summary of LiAM 6005

  • Page 1

    Liam 6005 5a@60v bipolar linear amplifier module user’s manual all rights reserved © caen els d.O.O. Rev. 1.3 – october 2014 magn et pow er suppl y sys te m s.

  • Page 2

    2 caen els d.O.O. Kraška ulica, 2 6210 sežana – slovenija mail: info@caenels.Com web: www.Caenels.Com.

  • Page 3: Table of Contents

    Table of contents 1. Introduction .............................................................................................. 10 1.1 l i am o verview ......................................................................................... 10 1.2 s ystem s tructure ..................................

  • Page 4

    4 5.3.5 “mrg” command ................................................................................... 59 5.3.6 “mri” command ..................................................................................... 60 5.3.7 “mrid” command ................................................................

  • Page 5

    5 document revision date comment 0.0 february 1 st 2013 document created 0.1 february 26 th 2013 first draft release 1.0 march 8 th 2013 first release 1.1 march 21 st 2013 mtune command explanation 1.2 february 10 th 2014 output and input power protection cover added 1.3 october 30 th 2014 manual gr...

  • Page 7: Warning

    Liam user’s manual 7 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...

  • Page 8

    Liam user’s manual 8 read over the instruction manual carefully before using the instrument. The following precautions should be strictly observed before using the liam: warning do not use this product in any manner not specified by the manufacturer. The protective features of this product may be im...

  • Page 9

    Liam user’s manual 9 the following table shows the general environmental requirements for a correct operation of the instrument: environmental conditions requirements operating temperature 5°c to 45°c operating humidity 30% to 85% rh (non-condensing) storage temperature -10°c to 60°c storage humidit...

  • Page 10: 1. Introduction

    Introduction liam user’s manual 10 1. Introduction this chapter describes the general characteristics and main features of the liam linear bipolar power supply unit. 1.1 liam overview this power supply system for electromagnets is a compact linear current- controlled power supply system named liam 6...

  • Page 11

    Liam user’s manual introduction 11 linearity are avoided/bypassed (since they would not be included in the computation of the calibration curves). This liam 6005 power unit, rated at 300w output power, is based on the cascade of a linear three-phase ac/dc stage and a linear current-controlled output...

  • Page 12: 1.2  System Structure

    Introduction liam user’s manual 12 1.2 system structure a liam 6005 power supply unit ( figure 1 ) is composed by a standard 2u-19” crate with a depth of 550 mm (a maximum of 578 mm considering also ac input, interlocks and output terminal connectors). Figure 1: front view of a liam 6005 unit on the...

  • Page 13

    Liam user’s manual introduction 13 the liam 6005 linear power supply main block diagram, with its principal features, is hereafter presented in figure 3 . The proposed control scheme is a well-known topology that guarantees high stability and high reliability for the entire system. The three-phase t...

  • Page 14

    Introduction liam user’s manual 14 figure 3: simplified block diagram of the liam unit.

  • Page 15: 2. Safety and Installation

    Liam user’s manual safety and installation 15 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...

  • Page 16: 2.3  Injury Precautions

    Safety and installation liam user’s manual 16 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...

  • Page 17: 2.5  Input Ratings

    Liam user’s manual safety and installation 17 2.5 input ratings do not use ac supply which exceeds the input voltage and frequency ratings of this instrument. For input voltage and frequency rating of the module see chapter 0. For safety reasons, the mains supply voltage fluctuations should not exce...

  • Page 18: Warning

    Safety and installation liam user’s manual 18 figure 4: installation of liam units in a 19” cabinet the three-phase input connections – i.E. Earth and the three lines l1, l2 and l3 – are placed on a terminal block connector on the rear of the crate, as shown in figure 5 : figure 5: rating plate and ...

  • Page 19: Warning

    Liam user’s manual safety and installation 19 warning be aware that once connected, the ac voltage lines l1, l2 and l3 are accessible from the rear screw hole terminals as indicated in the following figure figure 6: screw terminals at dangerous potential never connect l1, l2 and l3 lines if ac power...

  • Page 20

    Safety and installation liam user’s manual 20 1) connect the ground terminal of the input connector first; figure 7: connection of earth conductor 2) (optional) connect the interlock terminals to the load interlock signals and the output relay status if needed (only connection of interlock #2 is sho...

  • Page 21

    Liam user’s manual safety and installation 21 3) connect the current output terminals to the magnet to be supplied; figure 9: output connections to load 4) handle out and connect the three-phase line inputs to the power supply (ensure that the connection to the wall ac three-phase mains is not activ...

  • Page 22

    Safety and installation liam user’s manual 22 2.9.2 protection covers - optional plastic protections can be provided and can be installed on the rear side of the crate in order to avoid contact of the users with conductors at a dangerous potential. The cablings of the three-phase input conductors ar...

  • Page 23

    Liam user’s manual safety and installation 23 tie the cable tie in order to secure the connection of the main conductors to the casing as shown in figure 13 . Figure 13: protection cover of ac mains in its final configuration once everything is fixed you can cut the exceeding plastic part of the cab...

  • Page 24

    Safety and installation liam user’s manual 24 2.10 suggested cable sections the suggested cable sections for the liam rear panel connections are all included in the range 0.2 mm 2 → 4 mm 2 , i.E. 24 awg → 11 awg, and presented in table 1 . Mm 2 awg ac mains 1 17 interlocks and output status 0.25 23 ...

  • Page 25

    Liam user’s manual safety and installation 25 figure 16: substitution of voltage rail fuses please remove the blown fuses in the corresponding fuse holder and replace them with new ones with the same current rating and characteristics as shown in figure 16 . Please refer to the “liam 6005 distributi...

  • Page 26: 3. Liam Description

    Liam description liam user’s manual 26 3. Liam description a description of the liam module is herein presented with some in-depth explanations on the basic power supply functionalities. 3.1 general description the liam power supply front panel ( figure 17 ) presents the three-phase circuit breaker,...

  • Page 27

    Liam user’s manual liam description 27 figure 18: liam front panel details the leds are indicators of the power supply status and have to be interpreted as follows: fault led: the red light indicates that the liam module has experienced a generic fault that can be either an internal protection trip ...

  • Page 28

    Liam description liam user’s manual 28 voltage rail fuses; circuit breaker; several firmware protections, some of them redundant, are also implemented and here listed: rails undervoltage protection; ac-phase fail; over-temperature; output over-voltage; regulation fault; load fault. Protection redund...

  • Page 29

    Liam user’s manual liam description 29 3.1.1.1 voltage rail fuses the current drawn from the voltage rails (both positive and negative) is protected by fuses. The rated fusing current is 8a-t and both the fuse holders are accessible from the module rear panel and can be substituted. Installed fuses ...

  • Page 30

    Liam description liam user’s manual 30 figure 20: ac ok front-panel light indicator please note that the loss of the phase dedicated to supply the control and auxiliary circuit will turn off module communication, making the liam connectivity inaccessible. 3.1.1.1 over-temperature the output stage of...

  • Page 32

    Liam description liam user’s manual 32 this fault could trip, for example, if the connected load changes after the last time an ‘mtune\r’ procedure was ran on the power supply: this fault helps keeping the installation correctly into operation as planned. 3.1.2 external interlocks each liam power su...

  • Page 33

    Liam user’s manual liam description 33 note: the absolute maximum current that can be sunk/sourced by the output status relays (solid state relay pins 5 and 6) is 100ma. Interlock 1 (the displayed interlock name shown on the front display can be changed with the user requirements, see ‘mwf command’ ...

  • Page 34

    Liam description liam user’s manual 34 the value to be written is the ascii string, formed by 2 hexadecimal digits, that corresponds to the binary activation state mask; the eight external interlocks, as for the interlock enable/disable mask, are numbered from 0 to 7. Example: consider that both int...

  • Page 35

    Liam user’s manual liam description 35 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 (a power source is needed with a pull-up resistor); the interlock #2 activation level needs to be set to high with the...

  • Page 36

    Liam description liam user’s manual 36 3.2 internal memory mapping each liam power supply module has an on-board eeprom memory that stores all information about calibration parameters, module identification, thresholds, interlock configuration, etc. Some of these fields can be user-defined and are e...

  • Page 37

    Liam user’s manual liam description 37 cell # cell caption description 0 c 0 i_set zero-order current calibration coefficient 1 c 1 i_set 1 st -order current calibration coefficient 2 c 2 i_set 2 nd -order current calibration coefficient 3 c 3 i_set 3 rd -order current calibration coefficient 4 i ma...

  • Page 38

    Liam description liam user’s manual 38 all settable parameters (either password or non-password protected) need to be updated in order to take immediate effect on the module operation: a ‘mup\r’ command needs to be sent to the liam module after all parameters have been set by ‘mwg’ commands. Please ...

  • Page 39

    Liam user’s manual liam description 39 - serial number – cell 22: this cell contains the serial number of the power supply; - ac phase under-voltage protection – cell 23: this value [v] defines the voltage threshold below what the power supply generates an ac fault condition; - rail switching voltag...

  • Page 40: 3.3  Status Register

    Liam description liam user’s manual 40 3.3 status register each liam module has an internal 16-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 users via the remote connection. The inte...

  • Page 41

    Liam user’s manual liam description 41 - over-temperature – bit 3: this bit is set when an internal over-temperature condition has been experienced. The setting of this bit implies the simultaneous setting of the fault bit; - crowbar – bit 4: this bit is set when the voltage at the output terminals ...

  • Page 42

    Liam description liam user’s manual 42 3.4 adaptive rail switching the liam power supply is designed in order to obtain minimum irradiated and conducted noise by using linear ac/dc stages, linear dc/dc stages and analog control loop of the output current. In order to optimize the overall efficiency ...

  • Page 43

    Liam user’s manual liam description 43 3.5 automatic load recognition an automatic procedure to estimate load resistive value was implemented in order to guarantee more efficient and safe operation on the liam power supply units. By running the “mtune\r” command the power supply automatically start ...

  • Page 44

    Liam description liam user’s manual 44 the behavior of the unit output current, output voltage and the voltage rails considering this example situation is shown in figure 24 (please note that a point-by- point 0.1-hz current sine wave is fed to the power supply): figure 24: voltage rails behavior fo...

  • Page 45

    Liam user’s manual liam description 45 figure 25: voltage rails behavior for a high-value resistive load where the blue line is the output current, the red one the output voltage and the green ones the rail voltages values..

  • Page 46: 4. Local Display

    Local display liam user’s manual 46 4. Local display this chapter provides a brief description on the liam front panel local display indications and different operation screens/pages. 4.1 boot-up page during power-up or reset of the liam power supply unit, the module model and the installed firmware...

  • Page 47: 4.2  Monitor Page

    Liam user’s manual local display 47 4.2 monitor page three (3) seconds after power-up or reset of the unit, the boot-up screen page disappears to visualize the monitor page of the liam 6005. The display is divided into for lines and the following data/information are shown and updated every second: ...

  • Page 48

    Local display liam user’s manual 48 this field is factory defined as liam_xxxxxx where xxxxxx are digits (0 to 9) representing the serial number of the power supply module. The second line shows the internal readback of the module actual output current value with a resolution of 100 µa on the displa...

  • Page 49

    Liam user’s manual local display 49 4.3 automatic load recognition page when launching the automatic load recognition procedure by sending an ‘mtune\r’ command to the unit, the power supply will not respond to any other command until the procedure is over. During this time interval – i.E. Less than ...

  • Page 50: 5. Remote Control

    Remote control liam user’s manual 50 5. Remote control the liam power supply module can be remotely controlled via a standard ethernet 10/100 link accessible from the module front panel using a predefined set of commands. 5.1 preliminary information in order to ensure a correct communication with a ...

  • Page 51: 5.3  Commands Overview

    Liam user’s manual remote control 51 mrg read selected eeprom “value” cell r mri read output current value r mrid read module identification r mrm set output current value (ramp) w mrp read positive rail voltage value r mrn read negative rail voltage value r mrr read estimated resistance value r mrt...

  • Page 52

    Remote control liam user’s manual 52 an acknowledgment ‘#ak\r’ string is sent back in case of a correct setting command; 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...

  • Page 53

    Liam user’s manual remote control 53 5.3.1 “fdb” command the ‘fdb’ command is a custom command that was especially implemented, as in all series of power supplies made by caenels, in order to minimize traffic on the ethernet 10/100 communication socket, having a dedicated request/reply structure. Th...

  • Page 54

    Remote control liam user’s manual 54 bit 4 crowbar bit 3 over-temperature bit 2 ac fault bit 1 fault bit 0 module on the set_reg structure, in order to set the desired behaviour must be interpreted as follows: fdb command register (8bit): bit function: bit 7 bypass command bit 6 on/off bit 5 reset b...

  • Page 55

    Liam user’s manual remote control 55 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); - no faults are present; - the rail at their high level (handled automatically by the liam mod...

  • Page 56

    Remote control liam user’s manual 56 5.3.2 “moff” command the ‘moff\r’ command is intended to turn off the liam power supply output, thus disabling the output current terminals. The ‘moff\’ command automatically sets output current to 0a (zero) with a 5a/s factory default slew-rate before disabling ...

  • Page 57

    Liam user’s manual remote control 57 5.3.3 “mon” command the ‘mon\r’ command is intended to turn on the liam output, 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...

  • Page 58

    Remote control liam user’s manual 58 5.3.4 “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 enable the channel output again after a fault condition has been fixed. In order for the power supply ...

  • Page 59

    Liam user’s manual remote control 59 5.3.5 “mrg” command the ‘mrg\r’ command returns the value stored in the “value” parameter of a desired internal memory (eeprom) cell. The correct form for the reading request is as follows: mrg: cell_num \r where: cell_num is the eeprom cell number. The on-board ...

  • Page 60

    Remote control liam user’s manual 60 5.3.6 “mri” command the ‘mri\r’ command returns the readback value of the power supply actual output current. Current readback values have a 18-bit resolution (17-bit + sign) and they are presented with a 5-digit precision. Replies from the power supply controlle...

  • Page 61

    Liam user’s manual remote control 61 5.3.7 “mrid” command the ‘mrid\r’ command returns the liam module 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: module_id \r where: module_id is the ...

  • Page 62

    Remote control liam user’s manual 62 5.3.8 “mrm” command the ‘mrm’ command is used to set the value of the desired output current set-point: mrm: value \r where: 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 on...

  • Page 63

    Liam user’s manual remote control 63 5.3.9 “mrp” command the ‘mrp\r’ command returns the value of the positive power rail voltage, i.E. Positive dc link. Readback values have a unipolar 12-bit resolution. Replies from the liam power supply unit to this command are in the following format: #mrp: valu...

  • Page 64

    Remote control liam user’s manual 64 5.3.10 “mrn” command the ‘mrn\r’ command returns the value of the negative power rail voltage, i.E. Negative dc link. Readback values have a unipolar 12-bit resolution. Replies from the liam power supply unit to this command are in the following format: #mrn: val...

  • Page 65

    Liam user’s manual remote control 65 5.3.11 “mrr” command the ‘mrr\r’ command returns the estimated value of the connected load resistive part, obtained directly from an automatic load recognition procedure (strongly suggested) or directly written by the user. Please check the ‘mtune\r’ command for ...

  • Page 66

    Remote control liam user’s manual 66 5.3.12 “mrt” command the ‘mrt\r’ command returns the value of the maximum temperature directly measured on the power output stage heatsink. The liam has two different temperature sensors and the maximum value between these two is considered. Even if the internal ...

  • Page 67

    Liam user’s manual remote control 67 5.3.13 “mrv” command the ‘mrv\r’ command returns the readback value of the power supply actual output voltage, measured at the liam module output terminals. As for the output current, voltage readback values have an 18-bit resolution (17-bit + sign) and they are ...

  • Page 68

    Remote control liam user’s manual 68 5.3.14 “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 also an 18-bit resolut...

  • Page 69

    Liam user’s manual remote control 69 5.3.15 “msp” command the ‘msp\r’ command returns the value of the power supply last stored set- point current value. Replies from the liam unit controller to this command are in the following form: #msp: value \r where: value is the last stored output current set...

  • Page 70

    Remote control liam user’s manual 70 5.3.16 “msr” command the ‘msr’ command it is the only read/write command for liam and 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: #...

  • Page 71

    Liam user’s manual remote control 71 5.3.17 “mst” command the ‘mst\r’ command returns the value of the power supply internal status register (16 bit). Replies from the liam power supply module to this command are in the following format: #mst: value \r where: value is the ascii representation of the...

  • Page 72

    Remote control liam user’s manual 72 5.3.18 “mup” command the ‘mup\r’ (module update) command performs an update of the power supply liam actual parameters with the parameters read from the module internal eeprom. As an example, the mwf command updates only the content of the selected eeprom field b...

  • Page 73

    Liam user’s manual remote control 73 5.3.20 “ver” command the ‘ver\r’ command returns information about the liam power supply model and the currently installed firmware versions. The response to a ‘ver\r’ command is in the following format: #ver:liam6005: fw_ver \r where: fw_ver is the firmware vers...

  • Page 74

    Remote control liam user’s manual 74 5.3.22 “mwg” command the ‘mwg’ command lets users write a desired “value” item in a defined internal eeprom cell. The correct form format for this command is as follows: mwg: cell_num : cell_content \r where: cell_num is the eeprom cell number; cell_content is th...

  • Page 75

    Liam user’s manual remote control 75 5.3.23 “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...

  • Page 76

    Remote control liam user’s manual 76 5.3.24 “password” command the ‘password’ command can be used to unlock the internal 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. ...

  • Page 77

    Liam user’s manual remote control 77 5.3.25 “mtune” command (automatic tuning procedure) the ‘mtune\r’ command is used in order to launch the automatic load recognition procedure on the liam power supply. It is strongly suggested to run this procedure the first time a new load is connected to the po...

  • Page 78

    Remote control liam user’s manual 78 5.4 ip address configuration the liam power supply unit internet protocol (ip) address can be configured remotely using two different procedures: the situations can be mainly two: the actual power supply ip address is known by the user. In these case the new ip a...

  • Page 79

    Liam user’s manual remote control 79 5.4.1 ip address configuration - telnet connection if the power supply ip address is known by the user, it is also possible to configure the new ip address by using a simple telnet connection. The telnet connection must be established to port 9999 of the ethernet...

  • Page 80

    Remote control liam user’s manual 80 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; press the enter key until reaching the "your choice" screen again. Now ins...

  • Page 81

    Liam user’s manual remote control 81 5.4.2 ip address configuration - deviceinstaller® if the power supply ip address is not known by the user the best way to find out and to configure the module ip address is to use the deviceinstaller® software. The deviceinstaller® software can be downloaded for ...

  • Page 82

    Remote control liam user’s manual 82 complete the “ip address” field and click on “next”; click on the “assign” button; wait for the assignment procedure to end, and then click “finish”. The new module ip address should now be assigned and the success of the operation can be verified on the “devicei...

  • Page 83: 6. Technical Specifications

    Liam user’s manual technical specifications 83 6. Technical specifications technical specifications for liam 6005 current-controlled bipolar power supplies are herein presented. Liam 6005 rated output current ± 5a rated output voltage ± 60v rated output power 300 w input voltage 3 × 200vac ± 10% 47-...

  • Page 84

    Technical specifications liam user’s manual 84 auxiliary adc read-backs output current output voltage status register voltage rail voltages internal temperatures estimated resistive load cooling forced air convection remote connectivity ethernet tcp-ip extra-features firmware update short-circuit st...

  • Page 85: Warning

    Liam user’s manual annex a - output connectors 85 annex a - output connectors connections to the load must be carried out considering that the dc output connector pinout, made by terminal blocks, is presented in figure 30 : figure 30: output connector pinout the corresponding pinout is: pin 1: posit...