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Scientific DCX Series User Manual

Programmable switch mode power supplies
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Programmable Switch Mode Power
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DCX Series 800 Watts
User Manual

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Summary of Contents for Scientific DCX Series

  • Page 1 Programmable Switch Mode Power Supplies DCX Series 800 Watts User Manual...
  • Page 2 Information in this manual supercede all corresponding previous released material. Scientific continues to improve products and reserves rights to amend part or all of the specifications, procedures, equipment at any time without notice. Scientific shall not be liable errors contained in this document or if for incidental or consequential damages in connection with the furnishing, performance or use of this material.

  • Page 3: Table Of Contents

    Cooling Output Connecting the load Local & remote Sensing Constant voltage and constant current mode 4.10 Hold up time 4.11 Over voltage protection 4.12 Under Voltage limit 4.13 Fold back protection 4.14 AC fail User Manual DCX Series 800 W...
  • Page 4 Fold back enable/disable 6.1.16 Read measured output power 6.1.17 Read measured internal temperature 6.1.18 Status 6.1.19 Read LAN configuration Chapter 7 Maintenance Troubleshooting Chapter 8 Dispatch procedure for service & Warranty Dispatch procedure for service Warranty User Manual DCX Series 800 W...
  • Page 5 All the DCX models have universal mains input range for worldwide operation. They can be operated from line voltage 90 V ~ 270 V , 47 Hz ~ 63 Hz. Power factor correction also provides to ensure low harmonic content. User Manual DCX Series 800 W...

  • Page 6: Safety Instructions

    , causing hazardous conditions. Environmental conditions Please do not operate the instrument in the place that vibrates, dusty, under direct sunlight or where there is corrosive air. The Scientific Power supplies are designed for safety, applies to following conditions. - Indoor use.

  • Page 7: Safety Symbols

    Recycling helps to conserve natural resources and protect environment. For more information on collection and return, please contact dealer / from where you have purchased / to us giving full details. User Manual DCX Series 800 W...

  • Page 8: Chapter 1 Technical Specifications

    Output Impedance CV, 0-1kHz < 1 mΩ < 10 mΩ < 10 mΩ < 20 mΩ < 400 mΩ CV, 1-100kHz < 30 mΩ < 30 mΩ < 30 mΩ < 30 mΩ < 3Ω User Manual DCX Series 800 W...
  • Page 9 0 ~ 10.00 A 0 ~ 2.67 A 0 ~ 1.6 Protections Over voltage , Over current, Short Circuit, Fold Back, Over temperature Output Terminals Bus bar with M5 bolts Parallel operation Up to 4 units User Manual DCX Series 800 W...
  • Page 10 3. Unit warm up time is 30 min. 4. Minimum output voltage guaranteed to maximum of 0.2% rated. 5. Minimum output current guaranteed to maximum of 0.4% rated. * Multi range output V rated V rated I rated I rated Current User Manual DCX Series 800 W...
  • Page 11 Rear panel when unit is used on table top : – 432.0 1 mm Side view when unit is used on table top : 25.0 mm 27.0 mm 1 mm User Manual DCX Series 800 W...
  • Page 12 Top view : 432.0 1 mm Output bus dimension : User Manual DCX Series 800 W...

  • Page 13: Chapter 2 Panel Controls

    : Push button control for selecting setting for voltage or current. When pressed in combination with “Fn” button, “Comm” mode selected. Comm mode used for communication parameters. Associated LED above the button, lights when voltage and current settings selected. User Manual DCX Series 800 W...
  • Page 14 15 Instrument handel : Mounted on either side of the power supply unit for lifting the unit while mounting in 19” rack cabinet. 16 Mounting holes : Mounting holes used in fixing the unit in 19” rack cabinet. User Manual DCX Series 800 W...
  • Page 15 USB “B” connector , to connect the power supply to computer for remote control operations. 8 & 9 J1- J2 RJ45 connector , gives connections for RS232 , RS485 10 LAN LAN ( RJ45) connector for connecting PC for remote operations (optional). User Manual DCX Series 800 W...
  • Page 16 Connector J2 ( RJ45 ) Master - Slave Pin 1 Return ground Pin 2 Slave Connect Pin 3 Tx + Pin 4 Rx + Pin 5 Rx – Pin 6 Tx – Pin 7 Not Connected Pin 8 Not Connected User Manual DCX Series 800 W...
  • Page 17 LAN Socket (RJ45) LED Amber LED Green Collision Link & Activity LAN / Ethernet Socket is standard RJ45 socket. RJ45 USB Socket USB socket is standard USB socket type B. USB socket type B. User Manual DCX Series 800 W...
  • Page 18 This is cable is end User specific depends on the connections to remote units, panels etc. One end of this cable is RJ45 (male) and other end is DB 9 ( Female) connector. User can assemble it as per their required length, not more than 9 meter. Also available as optional accessories from Scientific. DB 9 (F) 9 Pin Connector...

  • Page 19: Chapter 3 Installation

    If damage is detected, file a claim with carrier immediately and inform the Dealer ,sales or authorized service facility nearest / / Scientific to you. If the contents in the container do not conform to the packing list, notify us or your dealer. Before putting this instrument in operation, make sure you go through the manual, safety and Cautions guidelines.
  • Page 20 Else order the Rear Panel Support Plates optional available. Caution ! Ensure that the supplied screws used for mounting only, else use appropriate screws of size M3x 6 mm. Ensure that they do not penetrate more than 6 mm inside. User Manual DCX Series 800 W...
  • Page 21 3.5 High Voltage Protection Cover for Safety For safety, while using power supplies above 60V, the output terminals / Bus bars are to be protected for accidently being touched for the safety of the operator. A Safety protection cover is provided with power supply unit as an accessory. We highly recommend to install it to avoid any potential hazard to the operator / User / personnel.
  • Page 22 The display will light and display will show “ OP OFF ”, this means the power supply is connected to AC mains and power supply is ready to use. Switch the POWER switch to Off position. User Manual DCX Series 800 W...
  • Page 23 In Description chapter , all the features and modes are explained in details. Request to go through each for better understanding and use. User Manual DCX Series 800 W...

  • Page 24: Chapter 4 Descriptions

    There is no external fuse in the unit, a safety fuse is installed inside the unit. In event of fuse blown, the fuse must be replaced only by Scientific authorised service personal. When power supply unit is switched ON, its inrush current is limited by internal circuitry. Switching ON and OFF at faster rate, may result in over heating of current limiter, resulting higher inrush current.

  • Page 25: Cooling

    LED will glow and output will be ON. If the problem reappears, check for space for air movement and clear the space. If it still persists, contact Scientific or dealer close to you. 4.5 Cooling The power supply has two fans to cool down the internal temperature. The fresh air is taken from front side and exit on rear side.

  • Page 26: Connecting The Load

    , if protective measures are not taken. Connect a suitable surge suppressor of voltage of say 10 % to 15% of the maximum voltage of power supply unit. User Manual DCX Series 800 W...

  • Page 27: Local & Remote Sensing

    Power supply can be used in either constant voltage mode - CV, or constant current mode - CC. The mode is indicated by front panel LEDs. The DCX series has multi-ranging, the advantage is, it serve purpose of two models higher voltage - lower current and lower voltage - higher current in one unit. The curve it follows is constant power curve.

  • Page 28: Hold Up Time

    “ ”. It remains until the power supply has energy to support the load and the output charge gets discharged. This depends on the load connected, normally in seconds. User Manual DCX Series 800 W...
  • Page 29 DIP switch. Note that, the Analog connector input signals for remote control, have reference to – ve output terminals and they are not floated. Wrong connection can cause earth loops, may cause faults. Care must be taken before connecting the analog connector after ensuring. User Manual DCX Series 800 W...
  • Page 30 In remote analog programming, to control the output voltage, V programming set value is fed to pin 9. Programming voltage of 5 V or 10 V reference is selected from SW1 DIP switch at rear panel. The relation between the Vset and Vout is ; User Manual DCX Series 800 W...
  • Page 31 These outputs are with reference Pin 12 and Pin 23 ground / return path. The relation between the Vmonitor and Vout is ; External Measuring Device External Measuring Device for Current e.g. DMM for Voltage e.g. DMM Vmonitor for 5 V reference ; User Manual DCX Series 800 W...
  • Page 32 : High ; Power supply Output OFF : Low Pin 18 : Not connected This pin is not used. Please do not connected any circuit to this pin. Pin 19 : AC fail status output User Manual DCX Series 800 W...
  • Page 33 Following settings are saved, with each mains switch OFF. Set voltage Set current Over voltage level Under voltage level Fold setting Baud rate Communication mode Power supply address Last status of Output ON or OFF 10. Front panel locked / unlocked User Manual DCX Series 800 W...
  • Page 34 4.20 Remote control mode in RS232, RS485 and USB The DCX series power supplies can be remotely controlled over RS232, RS485 and USB. End user can use SCPI commands in their control software. All the front panel functions are available on remote host. When the power supply unit is remotely accessed, all the front panel control push buttons gets locked, except push button “Rm”.
  • Page 35 4.23 Power supply as battery charger The DCX series power supplies can be used as battery charger, CV/CC mode regulates the charging current. To protect the power supply , use a circuit breaker in series with charging cable, in event of excess current or reverse polarity the circuit breaker will disconnect in very short time.
  • Page 36 5.2 Voltage & Current setting : To set the desired voltage or current, press “set” push button, the set LED will light and the display will show previous voltage current set values. To set the new value of voltage, rotate Voltage encoder until the desired value. Similarly to set the new value User Manual DCX Series 800 W...
  • Page 37 You can change the encoder resolution in coarse, medium or fine by pressing voltage encoder switch. The maximum under voltage can be set to approx. 95 % the set voltage. The minimum under voltage value can be set to 0 V. User Manual DCX Series 800 W...
  • Page 38 You can also access “Set”, “OV” , “UV” and “Fold” menu in output ON state. 5.7 Communication set menu The communication menu is selected by pressing the “ Fn” push button, followed by “COMM” push button. This menu is active only in output OFF condition and Local mode. User Manual DCX Series 800 W...
  • Page 39 By varying current encoder baud parameters can be changed from 1200,2400, 4800, 9600 and 19.2k when baud is selected. By varying current encoder address can be changed when Address is selected. The address range is 1 to User Manual DCX Series 800 W...
  • Page 40 , the power supply unit must restart to update / applied settings Communication To control the power supply unit, all the SCPI commands can be used. Refer “Chapter 6 interface protocol” , page 42. User Manual DCX Series 800 W...
  • Page 41 To unlock the front panel , press push button “Fn” and then press “UV” in sequence, the display will show in left window and in right window. the panel will be unlocked. User Manual DCX Series 800 W...
  • Page 42 Examples shown above is in case of DCX60M26. Return reply indicates instrument model DCX60M26 is connected. 6.1.4 Set output voltage This command is used to set the output voltage of power supply. Syntax: SO:VO <xx.xxxx> User Manual DCX Series 800 W...
  • Page 43 Syntax: OUTP 1 Power supply returns : OP ON To switch OFF the output; Syntax: OUTP 0 Power supply returns: OP OFF 6.1.9 Read set voltage This command returns the set voltage of power supply. User Manual DCX Series 800 W...
  • Page 44 10.0000, this means the measured output current is 10.0000 A. 6.1.15 Fold back enable / disable This command is used to ENABLE/DISABLE the fold back protection of power supply. To enable Fold back; Syntax: FOLD 1 Power supply returns : FOLD ON User Manual DCX Series 800 W...
  • Page 45 CV=0 6.1.19 Read LAN configuration This command is used to read the LAN / Ethernet configuration. Syntax: ETH:Config? This command returns LAN / Ethernet configuration details. e.g. Port: 5000 IP : 192.168.100.29 SB:255.255.255.0 GW:192.168.100.1 User Manual DCX Series 800 W...
  • Page 46 In such case we recommend to send the power supply unit to Scientific for service and repairs. In case of power supply failure, when it needs service / repairs , there is no User repairs or replaceable parts inside the power supply unit.
  • Page 47 There is no user replaceable fuse in the power supply. Only inside power supply unit there are fuses to protect the fault conditions. In case of these gets open, only Scientific qualified or authorized trained personal should replace the fuse.
  • Page 48 Service Center or factory. 8.2 Warranty conditions Scientific warrants all its Instruments to be free from defects in material and workmanship when used under normal operating conditions in accordance with the instructions given in the manual for a period of 12 (Twelve) months from date of purchase from Scientific or its authorized dealers.

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