Aim-TTI QPX1200S Instruction Manual
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Aim-TTI QPX1200S Instruction Manual

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QPX1200S & QPX1200SP
PowerFlex DC Power Supplies
INSTRUCTION MANUAL

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  • Page 1 QPX1200S & QPX1200SP PowerFlex DC Power Supplies INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    Table of Contents Specification Safety Installation Connections Initial Operation Manual Operation Remote Operation Remote Commands (QPX1200SP only) Maintenance Note: The latest revisions of this manual, device drivers and software tools can be downloaded from: http://www.aimtti.com/support. This manual is 48511-1530 Iss 11...

  • Page 3: Specification

    Specification General specifications apply for the temperature range 5°C to 40°C. Accuracy specifications apply for the temperature range 18°C to 28°C after 1 hour warm-up with no load and calibration at 23°C. Typical specifications are determined by design and are not guaranteed. OUTPUT SPECIFICATIONS Voltage Range: 0V to 60V...
  • Page 4 Output Protection: Output will withstand an applied forward voltage of up to 70V. Reverse protection by diode clamp for reverse currents up to 3A. Over-voltage Protection Range 1V to 65V. Resolution 0.1V; accuracy: 0.2% ± 0.2V. (OVP): Response time typically 100µs. Over-current Protection Range 2A to 55A.
  • Page 5 DISPLAY FEATURES The display is a 256 x 112 pixel transflective LCD, backlit by white LEDs; contrast is software- controlled and can be adjusted from the keyboard. The default status display shows the VOLTS (5 digits) and AMPS (4 digits) in 12mm high characters, plus the present output mode.

  • Page 6: Safety

    Safety This power supply is a Safety Class I instrument according to IEC classification and has been designed to meet the requirements of EN61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control and Laboratory Use). It is an Installation Category II instrument intended for operation from a normal single phase supply.

  • Page 7: Installation

    Installation Mains Operating Voltage This instrument has a universal input range and will operate from a nominal 115V or 230V mains supply without adjustment. Check that the local supply meets the AC Input requirement given in the Specification. Mains Lead Connect the instrument to the AC supply using the mains lead provided.

  • Page 8: Connections

    Connections Front Panel Connections The load should be connected to the positive (red) and negative (black) terminals marked OUTPUT. The terminals accept 4mm plugs into the end (but note that 4mm plugs will only support 32 Amps), 6mm diameter wire or plugs into the cross-hole or 8mm spade connections (with a maximum blade width of 16mm).
  • Page 9 Analogue Monitor The output terminal voltage and output current may be monitored on V MONITOR and I MONITOR respectively. The output scaling for both is the same as that set for V CONTROL and I CONTROL, see previous section. The COMMON return signal is referenced to the positive output of the power supply.

  • Page 10: Initial Operation

    Initial Operation This section of the manual is a general introduction to the controls and operation of the instrument and is intended to be read before using the power supply for the first time. In this manual front panel keys, connections and indicators are shown in capitals, e.g. ESCAPE, JOG SET, OUTPUT, ON.
  • Page 11 Jog Control The rotary 'jog' control permits the output voltage or current limit to be incremented or decremented in steps with a resolution set by the JOG SET keys; the output immediately follows the setting, i.e. no OK is required. At power-up jog is always off.

  • Page 12: Manual Operation

    Manual Operation New users should first read the Initial Operation chapter which describes the operating principles of the keypad and rotary jog control. Set Voltage With the output off, the standard status display shows the set voltage; shows as a Limits reminder beside OUTPUT OFF...
  • Page 13 Set Current Limit With the output off, the standard status display shows the set current limit; with the output on it shows the actual output current in all modes (CV, CC or UNREG). Both the actual current and the current limit are shown to a resolution of 10mA. The current limit can be set directly from the numeric keypad: press the NUMERIC SET I key, enter the new value using the numeric keys and confirm by pressing OK.
  • Page 14 Output Power (V x A) If SHIFT, V x A is pressed the display shows the product of measured output voltage x measured current in the form nn.n VA . . The V x A value is updated at the same measurement rate as for V and I.
  • Page 15 Sense Miswiring Trip The output will be tripped off if the voltage between an output terminal and its corresponding sense terminal exceeds approximately 2V; this will happen if the sense wires are wired at the load to the wrong output or if an attempt is made to draw power from the sense wires. If the sense terminals are miswired in this way the output is turned off and the message Sense is displayed.
  • Page 16 Over-Current Protection Over-Current Protection (OCP) can be set from 2.0A to 55.0A. If the output current exceeds the set OCP the output is shut down (typically within 100ms). To set OCP press SHIFT, OCP. The display changes to show only the present setting together with the prompt Numeric Entry: Range 2-55...
  • Page 17 Analogue Control Rear panel connections V CONTROL and I CONTROL provide quasi-analogue control of the Output Voltage and Current Limit respectively. The CONTROL inputs are read 4 times per second by the A-to-D converter and the output is set according to the selected input scaling. The input scaling for both can be set as 0 to 10 Volts or 0 to 5 Volts for maximum output.
  • Page 18 Extra Functions Options for extra functions such as LOGIC CONTROL and ANALOGUE CONTROL/MONITOR, plus variations on some of the factory default functions, can be set by the user by using the # extra functions facility. The complete list of functions is accessed by pressing SHIFT, # ; the required function can be selected directly by entering nn from the keyboard, where nn is the 2- digit number in the list below, or by scrolling to the appropriate function in the list using the JOG SET control;...

  • Page 19: Remote Operation

    Remote Operation The QPX1200SP can be remotely controlled via its RS232, USB, GPIB, LAN or Analogue interfaces; the QPX1200S has Analogue interfaces only. USB remote control operates in a similar way to RS232 but via the USB connector. Software supplied with the instrument sets up the controlling computer to treat the USB connection as a virtual COM port.
  • Page 20 Remote/Local Operation (QPX1200SP only) At power-on the instrument will be in the local state. In this state all keyboard operations are possible. When the instrument is addressed to listen and a command is received the remote state will be entered and REMOTE will be shown in the top line of the display. In this state the keyboard is locked out and remote commands only will be processed.
  • Page 21 RS232 Character Set Because of the need for XON/XOFF handshake it is possible to send ASCII coded data only; binary blocks are not allowed. Bit 7 of ASCII codes is ignored, i.e. assumed to be low. No distinction is made between upper and lower case characters in command mnemonics and they may be freely mixed.
  • Page 22 available or, if DHCP times out (30 seconds), via Auto-IP. In the very unlikely event that an Auto- IP address cannot be found a static IP address of 192.168.0.100 is assigned. Resetting the LAN removes any password protection. For more information on LXI standards refer to www.lxistandard.org/home . LAN Connection To use the LAN interface, the IP address of the unit must be known.
  • Page 23 ICMP Ping Server The unit contains an ICMP server allowing the instrument to be ‘pinged’ via either its host name or IP address. VXI-11 Discovery Protocol The instrument has very limited support of VXI-11 which is sufficient for the discovery protocol and no more.
  • Page 24 GPIB Interface The GPIB interface 24-way connector is located on the instrument rear panel. The pin connections are as specified in IEEE Std. 488.1-1987 and the instrument complies with IEEE Std. 488.1-1987 and IEEE Std. 488.2-1987. GPIB Subsets This instrument contains the following IEEE 488.1 subsets: Source Handshake Acceptor Handshake Talker...
  • Page 25 bit 7 = don't care bit 6 = bit 5 = Parallel poll enable bit 4 = bit 3 = Sense sense of the response bit; 0 = low, 1 = high bit 2 = bit 1 = bit position of the response bit 0 = Example.
  • Page 26 Bit 7 - Power On. Set when power is first applied to the instrument. Bit 6 - Not used. Bit 5 - Command Error. Set when a syntax type error is detected in a command from the bus. The parser is reset and parsing continues at the next byte in the input stream. Bit 4 - Execution Error.
  • Page 27 Bit 7 - Reserved for future use Bit 6 - Set when a fault trip has occurred which requires AC power OFF/ON to reset. Bit 5 - Set when an output sense trip has occurred Bit 4 - Set when an output over current trip has occurred Bit 3 - Set when an output over voltage trip has occurred Bit 2 -...
  • Page 28 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.

  • Page 29: Remote Commands (Qpx1200Sp Only)

    Remote Commands (QPX1200SP only) Remote Command Format RS232 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 instrument will send XOFF when approximately 200 characters are in the queue. XON will be sent when approximately 100 free spaces become available in the queue after XOFF was sent.
  • Page 30 Each query produces a specific which is listed along with the command in <RESPONSE MESSAGE> the remote commands list. is ignored except in command identifiers. e.g. '*C LS' is not equivalent to '*CLS'. <WHITE SPACE> is defined as character codes 00H to 20H inclusive with the exception of the NL <WHITE SPACE>...
  • Page 31 OCP1? Return the current trip setting – response is CP1 < 2>< > where < 2> is in Amps. V1O? Return the output readback voltage – response is < 2>V< > where < 2> is in Volts. I1O? Return the output readback current – response is < 2>A<...
  • Page 32 *OPC? Query Operation Complete status. The response is always 1 < > and will be available immediately the command is executed because all commands are sequential. *PRE < > Set the Parallel Poll Enable Register to the value < >. *PRE? Returns the value in the Parallel Poll Enable Register in <...
  • Page 33 IPADDR? Returns the present IP address of the LAN interface, provided it is connected. If it is not connected, the response will be the static IP if configured to always use that static IP, otherwise it will be 0.0.0.0 if waiting for DHCP or Auto-IP. The response is nnn.nnn.nnn.nnn<...

  • Page 34: Maintenance

    Maintenance The Manufacturers or their agents overseas will provide a repair service for any unit developing a fault. Where owners wish to undertake their own maintenance work, this should only be done by skilled personnel in conjunction with the service manual which may be purchased directly from the Manufacturers or their agents overseas.
  • Page 35 Thurlby Thandar Instruments Ltd. Glebe Road • Huntingdon • Cambridgeshire • PE29 7DR • England (United Kingdom) Telephone: +44 (0)1480 412451 • Fax: +44 (0)1480 450409 International web site: www.aimtti.com • UK web site: www.aimtti.co.uk Email: info@aimtti.com Aim Instruments and Thurlby Thandar Instruments...

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Qpx1200sp

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