Aim-TTI CPX400D Instruction Manual
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Aim-TTI CPX400D Instruction Manual

Powerflex dual dc power supply
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CPX400D & DP
PowerFlex Dual DC Power Supply

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Summary of Contents for Aim-TTI CPX400D

  • Page 1 CPX400D & DP PowerFlex Dual DC Power Supply...

  • Page 2: Table Of Contents

    Table of Contents Specification Safety Installation Connections Manual Operation Remote Interface Operation (CPX400DP only) Remote Commands (CPX400DP only) Maintenance Note: The latest revisions of this manual, device drivers and software tools can be downloaded from: http://www.tti-test.com/go/csx This manual is 48511-1480 Issue 10...

  • Page 3: Specification

    (CPX400DP only). Setting resolution: 10mA. Response time: typically 500ms. For manual operation (Local mode) & CPX400D, OCP is fixed at 22A. Over-temperature The output will be tripped off if a fault causes the internal temperature to rise Protection: excessively.
  • Page 4 Line Regulation: Change in output for a 10% line change: Constant voltage: <0.01% of maximum output Constant current: <0.01% of maximum output Load Regulation: Change in output for any load change within PowerFlex envelope, remote sense connected: Constant voltage: <0.01% of maximum output Constant current: <0.05% of maximum output Ripple &...
  • Page 5 DIGITAL INTERFACES (CPX400DP only) Full digital remote control facilities are available through the RS232, USB, LAN and GPIB interfaces. Voltage Setting: 16-bit, Resolution 10mV, Accuracy ± (0·05% +10mV) Current Setting: 16-bit, Resolution 1mA, Accuracy ± (0·3% + 0·005A) RS232: Standard 9-pin D-connector. Baud rate 9600. GPIB: Conforming with IEEE488.1 and IEEE488.2 USB:...

  • 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 Cambridgeshire PE29 7DR England declare that the CPX400D & CPX400DP 60V 20A Bench Power Supplies meet the intent of the EMC Directive 2004/108/EC and the Low Voltage Directive 2006/95/EC. Compliance was demonstrated by conformance to the following specifications which have been listed in the Official Journal of the European Communities.

  • Page 8: Emc

    This instrument has been designed to meet the requirements of the EMC Directive 2004/108/EC. Compliance was demonstrated by meeting the test limits of the following standards: Emissions EN61326-1 (2013) EMC product standard for Electrical Equipment for Measurement, Control and Laboratory Use. Test limits used were: Radiated: Class B Conducted: Class A...

  • Page 9: 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 10: Connections

    Connections Front Panel Connections The load should be connected to the positive (red) and negative (black) terminals marked OUTPUT. The OUTPUT terminals are rated at 30A. Remote sense connections to the load, if required, are made from the positive (+) and negative (−) SENSE terminals.
  • Page 11 The output and sense terminals for OUTPUT1 and OUTPUT2 are duplicated on the rear panel terminal blocks and are marked +O/P, −O/P, +S and −S. These connections are paralleled with their front panel equivalents. Switch the LOCAL/REMOTE switch to REMOTE when remote sensing is required. When the rear panel Output terminals are used, the use of remote sense is always recommended to ensure that output regulation is maintained within specification;...

  • Page 12: Manual Operation

    Manual Operation The operation of both outputs is identical; the following description applies to both. Switching On The power switch, located at the bottom left of the front panel, switches between standby ( ) and on ( l ). In standby the auxiliary power circuit remains connected and consumes ~6 Watts. To fully disconnect from the AC supply unplug the mains cord from the back of the instrument or switch off at the AC supply outlet;...
  • Page 13 The CUSTOM LIMITS capability allows the maximum values of both the VOLTAGE and CURRENT controls to be redefined by the user such that the controls operate over specific, lower, ranges. This not only has the advantage of protecting against the accidental application of, for example, excess voltages to the load, but also provides higher resolution analogue control over the specified ranges using the full 300º...
  • Page 14 The power envelope is set to give 60V/7A, 42V/10A and 20V / 20A under all supply conditions (both outputs loaded); at lower output voltages the output power is restricted by the 20A current maximum. When the power limit is exceeded, the status indication will change from CV or CC to UNREG. For example, if the supply is set to 20V, with the current limit at maximum, and is connected to a 2Ω...
  • Page 15 RS232, USB, LAN (LXI) or GPIB interfaces (CPX400DP only). Setting resolution is 10mA and typical response times are 500ms. In local mode and for CPX400D, OCP is still active but automatically defaults to 22 Amps. When the output is tripped the displays will show and the OUTPUT lamp will flash.
  • Page 16 View Settings The set voltage and current limit are always shown when the output is off but can also be viewed when the output is on by pressing the VIEW key; the VIEW lamp is lit whilst the VIEW key is pressed.
  • Page 17 It is possible to switch from V back to Independent with LOCK still set on the Master. The TRACK Master settings stay ’locked’ but the settings of the Slave are not locked. The V status at power on is the same as at last power off. TRACK Synchronous Output On/Off Control The SYNCHRONOUS ON/OFF key is in addition to the individual...

  • Page 18: Remote Interface Operation (Cpx400Dp Only)

    Remote Interface Operation (CPX400DP only) The instrument can be remotely controlled via its RS232, USB, LAN or GPIB interfaces. 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 19 Remote/Local Operation At power-on the instrument will be in the local state with the REMote indicator off. In this state all front panel 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 turned on. In this state the front panel is locked out and remote commands only will be processed.
  • Page 20 Baud Rate for this instrument is fixed at 9600; the other parameters are fixed as follows: Start Bits: 1 Parity: None Data Bits: 8 Stop Bits: 1 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.
  • Page 21 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 22 mDNS and DNS-SD Support Multicast DNS provides DNS services even on networks without a central DNS server (or DHCP server). This simplifies the setting up of a simple LAN using meaningful hostnames instead of a raw IP address. With service discovery it becomes straightforward for the device to be discovered and the services it provides.
  • Page 23 GPIB Subsets This instrument contains the following IEEE 488.1 subsets: Source Handshake Acceptor Handshake Talker Listener Service Request Remote Local Parallel Poll Device Clear Device Trigger Controller Electrical Interface GPIB IEEE Std. 488.2 Error Handling – Query Error Register The IEEE 488.2 error (addressed to talk with nothing to say) is handled as follows.
  • Page 24 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. 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 then PPC followed by 69H (PPE)
  • Page 25 Execution Error Register This register contains a number representing the last error encountered over the current interface. The Execution Error Register is read 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: No error encountered 1-9:...
  • Page 26 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.
  • Page 27 Power-on and Remote Operation Default Settings The following instrument status values are set at power on: Status Byte Register Service Request Enable Register † Standard Event Status Register = 128 (pon bit set) Standard Event Status Enable Register † Execution Error Register Query Error Register Parallel Poll Enable Register †...

  • Page 28: Remote Commands (Cpx400Dp Only)

    Remote Commands (CPX400DP only) RS232/USB 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.
  • Page 29 is the new line character with the END message NL^END. <RESPONSE MESSAGE TERMINATOR> 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>...
  • Page 30 V< >? Returns the set voltage of output < > The response is V < > < 2>< > where < 2> is in Volts I< >? Returns the set current limit of output < > The response is I < >...
  • Page 31 CONFIG? Reports the operating mode. The response is < 1>< >, where < 1> is 2 for outputs operating independently and 0 for voltage tracking mode. RATIO < > Set the ratio of output 2 (slave) to output 1 (master) in tracking mode to < >, where <...
  • Page 32 IFLOCK Request Instrument ‘lock’. This command requests exclusive access control of the instrument. The response is ‘1’ is successful or ‘-1’ if the lock is un- available either because it is already in use or the user has disabled this interface from taking control using the web interface IFLOCK? Query the status of the interface ‘lock’.

  • Page 33: Maintenance

    Error Messages Each error message has a number; only this number is reported via the remote control interfaces. Error message numbers are not displayed but are placed in the Execution Error Register where they can be read via the remote interfaces, see Status Reporting section. Maintenance The Manufacturers or their agents overseas will provide repair for any unit developing a fault.
  • Page 34 Book Part No. 48511-1480 Issue 10...

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