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INSTRUCTION MANUAL

QPX1200 Series

PowerFlex DC Power Supplies

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Summary of Contents for PowerFlex QPX1200 Series

Page 1: ...INSTRUCTION MANUAL QPX1200 Series PowerFlex DC Power Supplies ...

Page 2: ...nnections 9 Initial Operation 11 Manual Operation 13 Remote Operation 20 Remote Commands 29 Maintenance 33 Note The latest revisions of this manual device drivers and software tools can be downloaded from http www tti test com go qsx This manual is 48511 1400 Iss 6 1 ...

Page 3: ...ope the output becomes unregulated CV CI or UNREG mode indication in display QPX 1200 POWER ENVELOPE Output Switch Electronic with ON indication Preset voltage and current displayed when off Output Terminals Front panel safety terminals accepting 6mm wire diameter 6mm plugs or 8mm spades at 50 Amps max or 4mm plugs at 30 Amps max Duplicate rear panel terminals Sensing Switchable between local and ...

Page 4: ... is an isolated rear panel open collector output that will sink up to 2mA when activated switch closure the maximum voltage that can be applied to LOGIC OUT is 30VDC User can set LOGIC OUT to be closed or open for output enabled or disabled current limit CI mode power limit UNREG mode or for any fault trip ANALOG REMOTE CONTROL and MONITORING Non isolated inputs and outputs to set voltage and curr...

Page 5: ...ote Command Processing Time Typically 100ms between receiving the command terminator for a step voltage change at the instrument and the output voltage beginning to change GENERAL AC Input 110V 240V AC 10 50 60Hz Installation Category II Power Consumption 1600VA max Operating Range 5ºC to 40ºC 20 to 80 RH Storage Range 40ºC to 70ºC Environmental Indoor use at altitudes up to 2000m Pollution Degree...

Page 6: ... European Communities EMC Emissions a EN61326 1 2006 Radiated Class A b EN61326 1 2006 Conducted Class A c EN61326 1 2006 Harmonics referring to EN61000 3 2 2006 Immunity EN61326 1 2006 Immunity Table 1 referring to a EN61000 4 2 1995 Electrostatic Discharge b EN61000 4 3 2006 Electromagnetic Field c EN61000 4 11 2004 Voltage Interrupt d EN61000 4 4 2004 Fast Transient e EN61000 4 5 2006 Surge f E...

Page 7: ...urge 0 5kV line to line 1kV line to ground Performance B B f EN61000 4 6 2007 Conducted RF 3V 80 AM at 1kHz AC line only DC Output connections 3m therefore not tested Performance A A According to EN61326 1 the definitions of performance criteria are Performance criterion A During test normal performance within the specification limits Performance criterion B During test temporary degradation or lo...

Page 8: ...ohibited The protective action must not be negated by the use of an extension cord without a protective conductor When the instrument is connected to its supply terminals may be live and opening the covers or removal of parts except those to which access can be gained by hand is likely to expose live parts The apparatus shall be disconnected from all voltage sources before it is opened for any adj...

Page 9: ...r to the power rating information on the equipment or in the Specification WARNING THIS INSTRUMENT MUST BE EARTHED Any interruption of the mains earth conductor inside or outside the instrument will make the instrument dangerous Intentional interruption is prohibited Mounting This instrument is suitable both for bench use and rack mounting It is delivered with feet for bench mounting The front fee...

Page 10: ...ted to ensure that output regulation is maintained within specification Logic Input LOGIC IN is connected directly to the input of an isolating opto coupler there is no series resistor The input is activated when a current greater than approximately 1mA is forced between LOGIC IN and LOGIC COMMON The function of LOGIC IN is set from the keyboard Do not force a current exceeding 25mA between the te...

Page 11: ... The Windows plug and play functions should automatically recognise that the instrument has been connected If the correct driver is not found follow the Windows on screen prompts and install the required files from the CD supplied LAN The LAN interface is designed to meet LXI Lan eXtensions for Instrumentation version 1 2 the instrument is Class C compliant Remote control using the LAN interface i...

Page 12: ...r such that entry or control errors are minimised Where some of these features e g beeps are considered unnecessary by regular users the option exists to disable them see the Extra Functions section Under normal conditions the numeric keypad is disabled pressing any key will cause the buzzer to beep indicating an illegal operation To set a voltage with the keypad first press the V NUMERIC SET key ...

Page 13: ... are 1mV 10mV 100mV and 10mA 100mA 1A To disable the jog rotary control press the JOG SET OFF key reselecting JOG SET V or I will enable jog on the last used digit position Jog is not cancelled by using numeric entry or any of the SHIFT functions but it is disabled whilst that function is enabled Note that the dual display of the parameter being jogged is primarily of use if the output is ON with ...

Page 14: ...ts to the standard status mode Pressing ESCAPE at any time during the sequence or making no further key press within 10 seconds of the previous one will cause the display to return to its original reading before SET V was pressed Entering a voltage outside the range maximum including trying to enter 3 digits before the decimal point or trying to enter more than 5 digits will cause the buzzer to be...

Page 15: ...mp and the AMPS display will again change to two lines With the output ON the top line continues to show the actual output but the additional lower display now shows the present current limit in the lower display the JOG indicator is positioned under the digit that was last jogged Whilst the I SET lamp is lit each further press will move the JOG indicator one digit to the left the selection wraps ...

Page 16: ... this is inevitably increased by the resistance of the connecting leads and the contact resistance between terminals and leads At high currents this can result in significant differences between the indicated source voltage and the actual load voltage even two 2mΩ connecting leads will drop 0 2V at 50 Amps for instance This problem can be minimised by using short thick connecting leads but where n...

Page 17: ...at the output terminals are rated at 60A maximum if several outputs are operated in parallel to source higher currents than this the junction should be made at a separate point not one of the terminals Over Voltage Protection Over Voltage Protection OVP can be set from 2 0V to 65 0V If the output voltage exceeds the set OVP the output is immediately turned off typically within 100µs thus avoiding ...

Page 18: ...over temperature is suspected the cause of the fault should be rectified and the unit allowed to cool before the AC supply is turned on again Note that an over temperature trip shuts down the primary side of the instrument and it is that condition that is detected and causes the fault message to be displayed However other faults may occur which would also cause the primary side to shut down and th...

Page 19: ...y saved set ups on the Store screen The store location to be used can be selected directly by pressing any key 0 9 or by scrolling to the appropriate store number in the list using the JOG SET control the selected store is indicated by the square brackets at that location Press OK to store the set up at the selected location the screen returns to the standard status display A full store can be ove...

Page 20: ...he factory default option for example if 26 is selected 20 25 and 27 are all deselected Code Function 10 Output always off at power up factory default 11 Output status at power up same as at last power down 20 LOGIC OUT closed for Output ON open for Output OFF factory default 21 LOGIC OUT closed for Output OFF open for Output ON 22 LOGIC OUT closed for any trip 23 LOGIC OUT open for any trip 24 LO...

Page 21: ...o the standard status screen Setting the address is essential for GPIB operation but use can be made of the ADDRESS command over any of the other interfaces to easily identify which instrument is being controlled by a particular COM port for RS232 or USB or TCP socket for LAN Note that the LAN interface also has a separate Identify function accessible from the instrument s web pages that flashes t...

Page 22: ...e Connector The 9 way D type serial interface connector is located on the instrument rear panel The pin connections are as shown below Pin Name Description 1 RI Passively asserted V through 10kΩ 2 TXD Transmitted data from instrument 3 RXD Received data to instrument 4 CTS 5 GND Signal ground 6 RTS Passively asserted V through 10kΩ 7 DSR No internal connection 8 DTR 9 CD No internal connection RS2...

Page 23: ... port will be assigned each time that instrument is subsequently connected the PC software makes use of the unique code embedded in each instrument to link it to the same virtual COM port irrespective of which physical USB port it is connected to LAN Interface The LAN interface is designed to comply with the LXI standard version 1 2 Class C and contains the interfaces and protocols described below...

Page 24: ...assword The password can be up to 15 characters long note that the User Name should be left blank The password will however be reset to the default no password if the rear panel LAN RESET switch is used to reset all the LAN parameters to their factory default The web pages also have an Identify function which allows the user to send an identifying command to the instrument which causes its display...

Page 25: ...strument contains the following IEEE 488 1 subsets Source Handshake SH1 Acceptor Handshake AH1 Talker T6 Listener L4 Service Request SR1 Remote Local RL2 Parallel Poll PP1 Device Clear DC1 Device Trigger DT0 Controller C0 Electrical Interface E2 Query Error Register GPIB IEEE Std 488 2 Error Handling The IEEE 488 2 UNTERMINATED error addressed to talk with nothing to say is handled as follows If t...

Page 26: ...ition of the response bit 0 Example To return the RQS bit bit 6 of the Status Byte Register as a 1 when true and a 0 when false in bit position 1 in response to a parallel poll operation send the following commands PRE 64 pmt then PPC followed by 69H PPE The parallel poll response from the instrument will then be 00H if RQS is 0 and 01H if RQS is 1 During parallel poll response the DIO interface l...

Page 27: ...d and cleared using the EER command On power up this register is set to 0 for all interface instances Error messages have the following meaning 0 No error encountered 1 9 Indicates a hardware error has been encountered 100 The numerical value sent with the command was too big or too small Includes negative numbers illegal store numbers numbers 1 where only 0 and 1 are allowed etc 101 A recall of s...

Page 28: ...Serial Poll which will return RQS in bit 6 The Service Request Enable register is set by the SRE nrf command and read by the SRE command Bit 7 Not used Bit 6 RQS MSS This bit as defined by IEEE Std 488 2 contains both the Requesting Service message and the Master Status Summary message RQS is returned in response to a Serial Poll and MSS is returned in response to the STB command Bit 5 ESB The Eve...

Page 29: ...vironment The instrument will be in local state with the keyboard active The instrument parameters at power on are the same as at last switch off with the exception of the output status By default this is always off at power on but the user may change this to the same at power on as at switch off Status Model 28 ...

Page 30: ...t to CLS The high bit of all characters is ignored The commands are case insensitive GPIB Remote Command Formats GPIB input to the instrument is buffered in a 256 byte input queue which is filled under interrupt in a manner transparent to all other instrument operations The queue contains raw un parsed data which is taken by the parser as required Commands and queries are executed in order and the...

Page 31: ...nal part i e an integer nr2 A number in fixed point format e g 11 52 0 78 etc Instrument Specific Commands For commands specified as WITH VERIFY the operation is completed when the parameter being adjusted reaches the required value to within 5 or 10 counts whichever is the greater If the value fails to settle within these limits within 5 seconds then the Verify Timeout bit bit 3 is set in the Sta...

Page 32: ...OFF 1 ON In this instrument it has the same action as OP1 nrf SENSE1 nrf Set output sense mode where nrf has the following meaning 0 local 1 remote SAV1 nrf Save the current PSU set up to the set up store specified by nrf where nrf can be 0 9 RCL1 nrf Recall a set up for the PSU from the set up store specified by nrf where nrf can be 0 9 System and Status Commands CLS Clear Status Clears the Statu...

Page 33: ... interface from taking control via the web interface IFUNLOCK Release the lock if possible Returns 0 if successful If this command is unsuccessful 1 is returned 200 is placed in the Execution Error Register and bit 4 of the Event Status Register is set indicating that you do not have the authority to release the lock EER Query and clear the Execution Error Register The response format is nr1 rmt S...

Page 34: ...ype are used for replacement The use of makeshift fuses and the short circuiting of fuse holders is prohibited To replace the fuse first disconnect the instrument from the AC supply Remove the 6 cover securing screws and lift off the cover Replace the fuse with one of the correct type and refit the cover Note that the main function of the fuse is to make the instrument safe and limit damage in the...

Page 35: ...ridgeshire PE29 7DR England United Kingdom Telephone 44 0 1480 412451 Fax 44 0 1480 450409 International web site www tti test com UK web site www tti co uk Email info tti test com Aim Instruments and Thurlby Thandar Instruments Book Part No 48511 1400 Issue 6 ...

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