Programmable Switch Mode Power
Supplies
DCX Series 800 Watts
User Manual
Copyright © Scientific All rights reserved.
Disclaimer
This instrument contains proprietary information, no part of this manual may be photocopied, reproduced or
translated without any prior written consent.
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.
Rev 1.08/ 0921
2
Scientific Mes-Technik Pvt. Ltd.,
B-14 Industrial Estate, Pologround,
Indore- 452015,
India
Tel : 0731-2422330/31/32/33
Fax : 0731-2422334,561641
Email : info@scientificindia.com
Website: www.scientificindia.com
User Manual DCX Series 800 W
Programmable Switch Mode Power Supplies
DCX Series 800 Watts
Table of Contents
Introduction 5
Safety instructions 6
Safety symbols 7
Chapter 1 Technical specifications 8
1.1 Specifications 8
1.2 Power supply outline drawings - dimension 11
Chapter 2 Panel controls 13
2.1 Front panel controls 13
2.2 Rear panel controls 15
2.3 Sockets, connector description used on rear panel 16
2.4 Connection diagram for interface cables 18
2.4.1 USB cable 18
2.4.2 RS232/RS485 cable 18
2.4.3 Analog programming cable 18
2.4.4 Master-Slave cable 18
2.4.5 LAN cable 18
Chapter 3 Installation 19
3.1 AC Input mains connections 19
3.2 Cooling 19
3.3 Use of instrument on table top 19
3.4 Use of instrument in 19” Rack mounting cabinet 20
3.5 High Voltage Protection Cover for Safety 21
3.6 First time operation power ON 22
3.6.1 AC mains input 22
3.6.2 Connecting to AC mains 22
3.6.3 DC output check 23
3.6.4 DC constant current check 23
Chapter 4 Descriptions 24
4.1 Safety first - grounding 24
4.2 Input Voltage 24
4.3 Operating conditions 24
4.3.1 Temperature & humidity 24
4.3.2 Storage 24
4.4 Thermal protection 24
4.5 Cooling 25
4.6 Output 25
4.7 Connecting the load 26
4.8 Local & remote Sensing 27
4.9 Constant voltage and constant current mode 27
4.10 Hold up time 28
4.11 Over voltage protection 28
4.12 Under Voltage limit 28
4.13 Fold back protection 28
4.14 AC fail 28
3 User Manual DCX Series 800 W
4.15 Analog programming 29
4.16 Description of analog connector pins and application 30
4.17 Safe start - auto start mode 33
4.18 Last save memory 33
4.19 Front panel locking 34
4.20 Remote control mode in RS232, RS485 and USB 34
4.21 Connecting load 34
4.22 Connecting power supplies in series and parallel 34
4.23 Power supply as battery charger 35
4.24 Local Area Network (LAN) 35
Chapter 5 Menu controls 36
5.1 Power ON switching 36
5.2 Voltage & Current setting 36
5.3 Over Voltage setting 37
5.4 Under Voltage setting 37
5.5 Fold back protection 38
5.6 Output On/Off 38
5.7 Communication set Menu 38
5.8 Master/Savle Menu 41
5.9 Front panel lock 41
Chapter 6 Communication Interface Protocol 42
6.1 SCPI commands 42
6.1.1 Remote mode enable 42
6.1.2 Remote mode disable 42
6.1.3 Read instrument identity 42
6.1.4 Set output voltage 42
6.1.5 Set output current 43
6.1.6 Set Under Voltage limit 43
6.1.7 Set Over Voltage Protection 43
6.1.8 Set Output ON/OFF 43
6.1.9 Read set voltage 43
6.1.10 Read set current 44
6.1.11 Read Under Voltage limit 44
6.1.12 Read Over Voltage Protection set 44
6.1.13 Read measured output voltage 44
6.1.14 Read measured output current 44
6.1.15 Fold back enable/disable 44
6.1.16 Read measured output power 45
6.1.17 Read measured internal temperature 45
6.1.18 Status 45
6.1.19 Read LAN configuration 45
Chapter 7 Maintenance 46
7.1 Troubleshooting 46
Chapter 8 Dispatch procedure for service & Warranty 48
8.1 Dispatch procedure for service 48
8.2 Warranty 48
4 User Manual DCX Series 800 W
Programmable Switch Mode Power Supplies
DCX Series 800 Watts
Compact 1 U size
Multi range Output
Fast transient response
High slew Rate
Interface RS232, RS485, USB
LAN (optional)
Universal Mains
The DCX power supplies is designed for compact 1 U size with user friendly operation and higher efficiency.
This range offer multi ranging output characteristic which makes them more flexible than traditional or
rectangular output characteristic power supplies as they give multiple voltage and current combination in a
single power supply.
This series of power supplies offer fast up programming time allowing creation of multiple complex waveforms.
Transient response better than 100 us, ensures that the output of the power supply recovers much faster and
remains constant and oscillation free for dynamic loads.
Power supplies can be remotely controlled programmed through any of interface analog programming , USB,
RS232 or RS485, optional LAN. Power supplies can be programmed from 0 to full scale voltage and current.
SCPI compatible commands offer flexibility in programming in system integration. Power capabilities can be
added by connecting four power supply units in parallel or in series up to 600V.
With various protection features, over voltage protection, short circuit protection, fold back etc. protects
expensive loads circuits in testing. Fold back protection allows to set precise maximum current to be allowed,
which when exceed output gets disabled. User selectable last save memory, allows user to quickly start the
testing from previous test conditions.
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.
5
User Manual DCX Series 800 W
Safety instructions
The general safety instructions and symbols must be observed during all phases of operation of this
instrument. Failure to comply with these precautions or with specific warnings or instructions givens in this
manual violates safety standards of design, manufacture, and intended use of the instrument. Scientific
assumes no liability for the customer's failure to comply with these requirements.
- Before applying power, verify all the safety precautions are taken, make all the connections firm.
- Make sure the protective ground of the unit is connected with system ground.
- Always operate the instrument only in prescribed operating conditions.
- Do not modify the instrument, This instrument is designed to meet all the safety and operating
conditions. Any modification done may not be complying to the safety requirement and instrument may
be damaged , 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.
- Ambient temperature 0 ~ 50°C non condensing 75% RH , 0~40°C non condensing 95% RH
- Altitude up to 3000 meters
- Pollution degree 2
Installation category
These instruments are designed for installation category II, Over voltage category II.
Grounding
The instrument ground must be well connected to instrument chassis of AC power mains input supply.
The instrument must be connected through three conductor power cable, with the ground wire firmly
connected to the electrical safety ground of power outlet. Any interruption in protective ground
conductor , or disconnection will cause potential hazard that might cause personal injury.
Mains Input rating
This power supply unit is designed for specific mains input connections, as specified in the Technical
specifications. Do not use AC supply exceeding the limits. For safety reasons the mains AC may
should not fluctuate more than 10 % of nominal voltage.+
Fuse
Fuses must be changed by authorized Scientific service personal only for continued
protection against risk and safety.
Live circuits
There are no serviceable part or alignment required by Operating personnel. Operating must not
remove the instrument cover. No internal adjustment or component replacement is allowed by non-
Scientific authorised qualified personnel. Never replace components with power cable connected. To
avoid injuries, always disconnect power, discharge circuits and remove external voltage source before
touching components.
6 User Manual DCX Series 800 W
Safety symbols
Caution !
Caution ! : Denotes a hazard. Failure to follow instructions could result in minor personal injury and/or property
damage. Follow the instructions for proper procedures.
Warning !
Warning ! : Denotes a hazard. Failure to follow instructions could result in personal injury and/or SEVERE
property damage. Follow the instructions for proper procedures.
Symbols marked on instruments
Attention refer to the manual.
Caution ! Hazardous voltage exists, Electric shock.
Indicates Protective Ground Terminal
Indicates Ground Terminal
Off ( Supply )
On ( Supply )
7 User Manual DCX Series 800 W
Information on electrical and electronic equipment recycling
Our Equipment contain high quality components and material and are designated to facilitate recycling.
After appropriate use of this equipment , when this is to be discarded , the equipment must not be treated
as municipal waste. This must be disposed of separately via the appropriate return and collection system
available. By following these instructions, you ensure that the product is treated correctly and help to
reduce potential impacts on the environment and human health, which otherwise result from
inappropriate handling. 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.
Chapter 1 Technical specifications
Unless otherwise stated these specifications are defined over the temperature range of 0 to 40° C .
1.1 Specifications
8 User Manual DCX Series 800 W
DCX20M80 DCX60M26 DCX160M10 DCX600M2.67 DCX1000M1.6
DC Outputs Voltage 20V 60V 160V 600V 1000V
Multi Ranging *
DC Output Current 80A 26.5A 10A 2.67A 1.6
Power 800 Watts
Efficiency at 230V full load 80% 87% 87% 88% 86%
Constant Voltage Mode
Load regulation 0 ~ 100% (mV) 1 2 5 20 40
Line Regulation (mV) 1 1 2 2 10
Ripple (mVrms) BW=300 kHz 5 5 8 20 90
Ripple (mVrms) 5Hz~1MHz 15 5 8 30 100
Ripple (mVpp) 20 MHz 20 20 30 50 200
Constant Current Mode
Load regulation 0 ~ 100 % (mA) 25 7 3 10 10
Line Regulation (mA) 2 3.5 2 5 2
Ripple (mArms) BW=5 Hz ~1MHz 25 10 5 5 5
Ripple (mApp) 20 MHz 100 25 15 20 20
Remote sense drop 1 V typically 2 V typically 5 V typically
Programming Speed
Rise time ( 10% to 90% ) into resistive load
Time 100% load 10V : 6.5ms
20V : 12ms
30V : 6ms
60V : 25ms
80V : 30ms
160V : 80ms
300V : 70ms
600V : 225ms
500V : 45ms
1000V : 180ms
Time 10% load 10V : 2.5ms
20V : 5ms
30V : 2.5ms
60V : 10ms
80V : 20ms
160V : 50ms
300V : 20ms
600V : 100ms
500V : 40ms
1000V : 160ms
Fall time ( 90% to 10% ) into resistive load
Time 100% load 10V : 6.5ms
20V : 12ms
30V : 6ms
60V : 25ms
80V : 30ms
160V : 100s
300V : 60ms
600V : 200ms
500V : 50ms
1000V : 190ms
Time 10% load 10V : 60ms
20V : 120ms
30V : 60ms
60V : 250ms
80V : 250ms
160V: 900ms
300V : 600ms
600V :2s
500V : 500ms
1000V : 1.8s
Time No load 10V : 0.5s
20V : 1s
30V : 1s
60V : 2.5s
80V : 3s
160V : 5s
300V : 6s
600V : 10s
500V : 10s
1000V : 15s
Recovery Time
Recovery within 80mV 80mV 100mV 0.5V 1V
time @ 50 – 100 % load step 100us 100us 100us 100us 100us
max deviation @ 230 V mains 10V : 300mV
20V : 160mV
30V : 300mV
60V : 150mV
80V : 1V
160V: 500mV
300V : 1V
600V : 1.5V
500V : 1.5V
1000V : 3V
Output Impedance CV, 0-1kHz
CV, 1-100kHz
< 1 mΩ
< 30 mΩ
< 10 mΩ
< 30 mΩ
< 10 mΩ
< 30 mΩ
< 20 mΩ
< 30 mΩ
< 400 mΩ
< 3Ω
DCX20M80 DCX60M26 DCX160M10 DCX600M2.67 DCX1000M1.6
Temperature Coefficients CV : 50 ppm/°C CC : 60 ppm after warm up of 30 min and during 8 hrs
Output Stability CV : 80 ppm/°C CC : 100 ppm after warm up of 30 min and during 8 hrs
Analog Programing (Rear panel 25 pin D connector)
Programing
V : 0 ~ 5 V/10V, Accuracy : 0.5 % of Vout rated,+
Input impedance : 1 MΩ
I : 0 ~ 5 V, Accuracy : 1 % of Iout rated+
Input impedance : 1 MΩ
Monitoring
V out : 0 ~ 5 V/10V, Accuracy : 1% of Vout rated+
output impedance : 150 / 4 mA maxΩ
I out : 0 ~ 5 V, Accuracy : 1 % of Iout rated+
Output impedance : 150 / 4 mA maxΩ
V reference 5.1 V 15 mV+
Resistor Programing Voltage : 0~100%, 0~5/10 k full scale, user selectableΩ
Accuracy and linearity : 1% of Vout rated +
Current : 0~100%, 0~5/10 k full scale, user selectableΩ
Accuracy and linearity : 1.5 % of Iout rated +
Status outputs Power Supply OK Logic 1 (High); AC Fail – Logic 0 (Low)
DC Fail – Logic 0 (Low), for DC fails by 5 % set value+
CV / CC Status : CV :Logic 0 / CC Logic 1
Interlock : Dry contact , Short = Power Supply enabled , Open = Power
Supply disabled
DC ON status – ON = Logic 1 , OFF = Logic 0
OVP status Fault : Logic 0, else OK =Logic 1
OTP status Fault : Logic 0, else OK =Logic 1
Remote status : Remote= Logic 1 , Local = Logic 0
Remote shutdown +5 V
Remote Programing
RS232 / USB / RS485
LAN(optional)
Voltage Programing
Current Programing
Monitor Voltage
Monitor Current
OVL & UVL
ADC : 16 Bits , DAC : 16 Bits
Resolution : better than 15 Bits
Accuracy : 0.05% Vout + 0.05% Vrated
Resolution : Better than 15 bits
Accuracy : 0.1% Iout + 0.1% I rated
Resolution : Better than 15 bits
Accuracy : 0.1% Vout + 0.1% V rated
Resolution : Better than 15 bits
Accuracy : 0.25% Iout + 0.02% I rated
Resolution : better than 15 Bits
Accuracy : 0.05% Vout + 0.05% Vrated
Front Panel controls
Indicators :
Mains ON/ OFF, Voltage and Current setting with Encoder, switch settings :
Set, Over voltage, Under Voltage , Fold back, Remote & Output
LEDs for CV, CC, Over Voltage, Under Voltage, Fold back, Remote and
Output ON
Display
Resolution Voltage
Current
4 digit
4 digit
4 digit
4 digit
4 digit
4 digit
4 digit
3 digit
4 digit
3 digit
Accuracy ± (0.5 % + 2 d)
Display scale Voltage 0 ~ 20.00 V 0 ~ 60.00 V 0 ~ 160.0 V 0 ~ 600.0 V 0 ~ 1000V
Current 0 ~ 80.00 A 0 ~ 26.50 A 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
9 User Manual DCX Series 800 W
Notes:
1. Subject to change without notice.
2. Sensing at the rear panel of the power supply unit at sense terminals.
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.
10 User Manual DCX Series 800 W
DCX20M80 DCX60M26 DCX160M10 DCX600M2.67 DCX1000M1.6
Serial operation max 600 V to chassis max 1200 V
to chassis
No series
operation
Mains Input Universal AC input, Single phase, 90 ~ 270V, 50 / 60 Hz ( 47 ~ 63Hz)
Input connector : IEC320/C14 , EN 60320/14
Standby Power : 30 Watts @ 230V (Vout max, No load)
Internal Fuse L : 15 A, 6.3 x 32 mm ceramic fuse.
Power Factor 0.99 @ full load / 0.98 @ 50% load
Turn On delay 600 ms after mains switched ON
Inrush current <25A
Hold up Time 20 ms
Environment Conditions
Operating Temperature -20 ~ +50°C; with 100% load; derated 75% at 60°C
Storage -40 ~ + 85°C
Humidity max. 95% non condensing at 40°C, max. 75% non condensing at 50°C
Safety Insulation : Input to Output : 3750 V for 1 min
Input to case : 2500 Vrms Output to case : 600 V
Insulation resistance : 100 M at 25°C, 70% RH, 500 Vdc
Dimension W x D x H : 443 x 475 x 43.5 mm (1U, 19” Rack size) excluding connectors,
terminals, switches, front and back panel controls,
handles etc.
Weight 8.9 kg approx.
Cooling Forced , variable Fan speed
Accessories Mains Cord, USB Cable, RS232/485 Cable, CD
* Multi range output
Current
V rated
I rated
V rated
I rated
2
2
+
–
1.2 Power supply outline drawings - dimension
432.0 1 mm+
Note : Height excluding instrument feet
482.5 1 mm+
Note : When the power supply unit is mounted in 19” rack cabinet, instrument feet are removed and
side rack mounting handle assemblies are fitted on both side.
Front panel when unit is used on table top :
Front panel when unit is mounted in 19” rack cabinet :
Rear panel when unit is used on table top :
Side view when unit is used on table top :
11 User Manual DCX Series 800 W
432.0 1 mm+
475 1 mm+
27.0 mm25.0 mm
12 User Manual DCX Series 800 W
Top view :
Output bus dimension :
432.0 1 mm+
1 AC Power Switch : Mains AC power ON/Off control, when switched to ON, supplies main AC power
to unit.
2 Voltage control : Voltage control encoder for setting the voltage. When pressed, it gives fine
adjustment control. It is also used for setting the over voltage, under voltage level
settings. When used with Menu, it is used for setting the parameters in Menu
selection.
3 Display Voltage : 4 digit display for setting and measured of output voltage. When used in
combination with OV or UV, it displays over voltage and under voltage setting. When
used with Menu it displays parameters.
4 Display Current : 4 digit display for setting and measured of output current. When used with Menu it
displays parameters.
5 Current control : Current control encoder for setting the current limits. When pressed, it gives fine
adjustment control. When used with Menu, it is used for setting the parameters in
Menu selection.
6 CV LED indicator : LED indicator for CV , lights when power supply is in constant voltage mode.
7 Set & Comm : 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.
13 User Manual DCX Series 800 W
Chapter 2 Panel controls
2.1 Front panel controls
The front panel controls are arranged erogonimically to ease in operation with indicators. Before using the
power supply unit, please read the following explanation to each control and connectors.
1
6
23 4 5
7 8 9 10 11 12
13
14 15 16
8 OV & MST/SLV : Push button control for selecting setting for over voltage. When pressed in
combination with “Fn” button, “MST/SLV” mode selected. MST/SLV mode is
reserved for future development and release.
9 UV : Push button control for selecting setting for under voltage. Associated LED above
the button, lights when under voltage setting is selected .
10 Fold : Push button control for enabling / disabling Fold mode. Associated LED above
the button, lights when fold back protection enabled.
11 RM & Fn : Push button control for releasing instrument from Remote control. Associated LED
above lights when instrument is in remote control mode. When pressed in
local mode it acts as a “Fn” button.
12 Output : Push button to control DC output ON / Off. Associated LED above lights when the
output is ON.
13 CC LED : LED indicator for CC , lights when power supply is in constant current mode.
14 Instrument Feet : Instrument feet, to be fixed when power supply unit is to be used on table. Else not
needed when mounted in 19” rack cabinet.
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.
14 User Manual DCX Series 800 W
1 PE : Terminal provided to make connection of protective earth.
2 – DC Output + : DC Output Bus bars , to connect the load.
3 Sense Terminals : Remote sense terminals. Mating connector is provided with the instrument.
4 Analog Programming: 25 pin (F) D type connector for remote analog programming. Refer page 17 &
27 for details.
5 SW 1 : 8 Position DIP Set up switch , for settings various functions.
6 AC Input : AC mains inlet socket to power the instrument.
7 USB : 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).
15 User Manual DCX Series 800 W
2.2 Rear panel controls
The rear panel is arranged with mains inlet connector, output terminals and communication ports etc. .
+
–
123 4 6
7 8 9 10
5
Sense Terminal
Pin 1 L – Local sense –
Pin 2 S – Remote sense –
Pin 3 NC Not connected
Pin 4 S + Remote sense +
Pin 5 L + Local sense +
SW 1 : 10 Pin DIP Set up switch
DIP Switch Position Up Down
Pin 1 Reserved (keep it Down) Down
Pin 2 Interlock Enable Disable
Pin 3 Output ON on mains Last saved Output OFF
switched ON
Pin 4 Programming Resistance Voltage
Voltage / Resistance
Pin 5 Current Monitor output 10 V 5 V
Pin 6 Voltage Monitor output 10 V 5 V
Pin 7 Current Programming Analog Front Panel
Front Panel / Analog connector Programming
Pin 8 Current / Resistance 5 / 10 10 V/k 5 V/k
Programming
Pin 9 Voltage Programming Analog Front Panel
Front Panel / Analog connector Programming
Pin 10 Voltage / Resistance 5 / 10 10 V/k 5 V/k
Programming
Connector J1 ( RJ45 ) RS232 / Rs485
Pin 1 Return ground
Pin 2 Not used, reserved for future, do not connect anywhere
Pin 3 RS485 Rx +
Pin 4 RS485 Tx +
Pin 5 RS485 Tx –
Pin 6 RS485 Rx –
Pin 7 RS232 Tx
Pin 8 RS232 Rx
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
2.3 Sockets, connector description used on rear panel
The rear panel has different types off connections to other equipments for controlling, monitoring etc. ,
followings are connections for quick understanding. Detailed description on each is in specific inside the
manual.
16 User Manual DCX Series 800 W
Default connections
for Local
13
2 4 5 6 78
13
2 4 5 6 78
Switch settings shown
in Default condition
17 User Manual DCX Series 800 W
Analog programming connector
Pin 1 Interlock +
Pin 2 Ground Analog Programming
Pin 3 Ground Analog Programming
Pin 4 Reserved, Please do not connected any circuit to this pin !
Pin 5 Over Voltage Status
Pin 6 Over Temperature Status
Pin 7 Reference Voltage output 5.1 V
Pin 8 Not Connected
Pin 9 Voltage Programming input
Pin 10 Current Programming input
Pin 11 Voltage Monitoring Output
Pin 12 Ground Analog Programming
Pin 13 CV / CC Status
Pin 14 Interlock –
Pin 15 Remote Shut Down input
Pin 16 Power Supply status
Pin 17 DC Output ON status
Pin 18 Reserved, Please do not connected any circuit to this pin !
Pin 19 AC Fail status output
Pin 20 DC Fail status output
Pin 21 Remote Control status output
Pin 22 Ground Analog Programming
Pin 23 Ground Analog Programming
Pin 24 Current Monitoring Output
Pin 25 Not connected
1
13
25 14
LAN Socket (RJ45) LED Green
Link & Activity
LED Amber
Collision
RJ45
LAN / Ethernet Socket is standard RJ45 socket.
USB Socket
USB socket is standard USB socket type B.
USB socket type B.
User Manual DCX Series 800 W 18
2.4 Connection diagram for interface cables used
To connect the power supply unit for remote control, the connecting cable wiring diagram is given below.
2.4.1 USB Cable
This is a standard USB cable connector type A to type B, used for connecting power supply to host ( computer
or others). This is supplied as standard accessories with the unit.
2.4.2 RS232/RS485 Cable
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.
2.4.3 Analog programming cable
This is cable is end User specific depends on the connections to remote units, panels etc. To prepare cable,
you will need standard DB 25 (male) connector, which connects the power supply rear panel at Analog
programming connector, DB 25 ( Female) connector. Depending on the required connection any good quality
multi core shielded cable can be use. For pin details please refer Analog programming in chapter 4 for
connections.
2.4.4 Master - Salve cable
For connecting power supplies in Master-Slave , use short length standard RJ45 to RJ45 ( 1:1 wired) cable.
2.4.5 LAN Cable
For connecting power supply to computers, use standard 1:1 LAN/Ethernet cable.
8 Pin RJ45 Connector
UTP Flat or
shielded 8
core cable
DB 9 (F) Connector
Pin No. Signal Pin No. Signal
1 Signal ground 5 Signal ground
2 Not connected 1 Not Connected
3 RXD + 4 RXD +
4 TXD + 6 TXD +
5 TXD – 7 TXD –
6 RXD – 8 RXD –
7 Rx 3 Tx
8 Tx 2 Rx
Shielded 8 core cable
RJ45 8 Pin Connector
DB 9 (F) 9 Pin Connector
1
8
RJ45 Plug
Front View
1
6
5
9
Chapter 3 Installation
Your instrument is thoughtfully designed, manufactured, tested and inspected, found free of mechanical and
electrical defects. When you receive the instrument, some inspections are necessary, and the condition must
be understood and available before installing the instrument. Inspect the shipping container for damage if any
after unpacking it. It is not recommended to use the instrument in the case of a damaged container. Keep all
packing material until the inspection has been completed. 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.
Ensure that the environmental conditions are fulfilled. Ensure that the instrument is not be used in place with
vibrations, heating or exposed to sky , direct sunlight, for proper functioning and extensive life of service.
3.1 AC input mains connections
The mains AC socket ( IEC compatible ) is provided on the rear panel. Use the mains cord provided with the
instrument , alternative ensure appropriate rating cable is used for connections as per the standard mains cord
used in your country. This power supply unit can be operated from 90 V ~ 270V , 47 ~ 63 Hz.
3.2 Cooling
The power supply unit is forced air cooled, it has two
internal fans, the speed of the fans depends on the
temperature of internal heat sinks. The air movement is
from front to rear. Allow approximately 10 cms of free
space on front and rear of the instrument, for free air
movement. This allows stacking power supplies one
above other and in 19” rack cabinets. For prolonged life
of the power supply, the inlet temperature of air should
be below 35°C. The instrument control circuit senses
heat sink temperature, power delivered and adjust the
fan speed accordingly. Thus the speed is controlled in
pulsating mode, during this period , high pitch sound is
produced, this is normal.
3.3 Use of instrument on table top
The power supply does not need any additional fitting /
assembly of part. Ensure that the instrument feet are
mounted on bottom side of the power supply unit. If not
using appropriate screw driver, fix the instrument feet ( 4
nos. ) provided with unit.
User Manual DCX Series 800 W
Power Supply
Top View
Air Inlet
Air Outlet
Install 4 nos. of
Instrument feets supplied
with the instrument
19
3.4 Use of instrument in 19” rack mounting cabinet
This power supply unit is designed to fit in standard 19” rack mount cabinet. it requires few parts to be
installed before placing it in cabinet.
1. Use the front panel rack mount brackets and fix it on left and right side of the instrument as shown
below. Figure below shows mounting of screws on right side, repeat the same for left side.
2. Use the rear panel support plate , if available , fix it on rear sides of the instrument, shown below.
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 20
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