ODA OPX-93D User manual

Programmable DC Power Supply
User Manual
www.odacore.com
OPX-93D
Manual Part NO. 018OPX-93D-2.0

Legal Notices
© ODA Technologies.,Co.Ltd 2004
No part of this document may be photocopied, reproduced, or translated to another language without
the prior another language without the prior agreement and written consent of ODA agreement and
written consent of ODA Technologies.,Co.Ltd. as governed by Korea and international copyright laws.
Warranty Certification
The material contained in this document is provided “as is,” and is subject to being changed, without
notice, in future editions. Further, to the maximum extent permitted by applicable law, ODA disclaims
all warranties, either express or implied, with regard to this manual and any information contained
herein, including but not limited to the implied warranties of merchantability and fitness for a particular
purpose. ODA shall not be liable for errors or for incidental or be liable for errors or for incidental or
consequential damages in connection with the furnishing, use, or performance of this document or of
any information contained herein. Should ODA and the user have a separate written agreement with
warranty terms covering the material in this document that conflict with these terms, the warranty terms
in the separate agreement shall control.
Assistance
This product comes with the standard product warranty. Warranty options, extended support contacts,
product maintenance agreements and customer assistance agreements are also available.
Contact your nearest ODA Technologies. Sales and Service office for further information on
ODA Technologies. full line of Support Programs. Refer to below information.
www.odacore.com
[email protected]
82-2-1800-8644
Waste Electrical and Electronic Equipment
The affixed product label (see right) indicates that you must not discard
this electrical/electronic product in domestic household waste. Do not
dispose in domestic household waste. To return unwanted products,
contact our local ODA distributors, or call us for more information.
Manual Editions
Manual Part Number: 018OPX-93D-2.0 Edition 2, February, 2018 Printed in ROK
Reprints of this manual containing minor corrections and updates may have the same printing date.
Revised editions are identified by a new printing date.

Safety Notices
The following general safety precautions must be observed during all phases of operation of this
instrument. Failure to comply with these precautions or with specific warnings or instructions elsewhere
in this manual violates safety standards of design, manufacture, and intended use of the instrument.
ODA Technologies assumes no liability for the customer's failure to comply with these requirements.
understood and met.
of flammable gases or fumes.
Do not operate the instrument in the presence
Do Not Operate in an Explosive Atmosphere
is not customer accessible.
rofrepyltcerroctonfi,tahtekilehtro"slobmySytefaS" med or
adhered to, could result in personal injury or
The instrument contains an internal fuse, which notice until the indicated conditions are fully
removing the instrument cover.
the power cable and any external circuits before
remove instrument covers. Always disconnect
are aware of the hazards involved should
Only qualified, service-trained personnel who
Do Not Remove the Instrument Cover
Fuses death. Do not proceed beyond a WARNING
Make all connections to the unit before WARNING
applying power. Note the instrument's A WARNING notice denotes a hazard. It calls
external markings described under attention to an operating procedure, practice,
of important data. Do not proceed beyond a
hazard that could result in personal injury. CAUTION notice until the indicated conditions
Verify that all safety precautions are taken.
CAUTION
Before Applying Power are fully understood and met.
(safety ground) at the power outlet. Any attention to an operating procedure, practice, or
interruption of the protective (grounding) the like that, if not correctly
p
erformed or adhere
d
conductor or disconnection of the protective to, could result in damage to the product or loss
earth terminal will cause a potential shock
A CAUTION notice denotes a hazard. It calls
In Case of Damage
Instruments that appear damaged or defective
chassis and cover must be connected to an qualified service personnel.
electrical ground. The instrument must be
connected to the ac power mains through
a grounded power cable, with the ground
Do not install substitute parts or perform any u
nauthorized modification to the product. Return
the product to an ODA Sales and Service Office
for service and repair to ensure that safety
Ground the Instrument
This product is a Safety Class 1 instrument
(provided with a protective earth terminal).
wire firmly connected to an electrical ground
features are maintained.
General Do Not Modify the Instrument
Do not use this product in any manner not
To minimize shock hazard, the instrument unintended o
p
eration until they can be re
p
aired b
y
specified by the manufacturer. The protective
features of this product may be impaired if it is
used in a manner not specified in the operation
instructions.
should be made inoperative and secured against

Safety Symbol
Out position of a bi-stable
push switch Caution, risk of electric shock
Caution, hot surface Caution, refer to accompanying
documents
ylppusffOylppusnO
Standby supply. Unit is not
completely disconnected
from ac mains when switch
is off
In position of a bi-stable push
switch
Direct current
Earth (ground) terminal
Frame or chassis terminal
Protective earth ground terminal.
Alternating current
Both direct and alternating current Three phase alternating current
Terminal is at earth potential.
Neutral conductor on
permanently installed
equipment
Line conductor on
permanently installed equipment.

CONTENTS
1. Product Outline
6
1-1. Product Characteristics 6
General Functional Characteristics
Remote Interface Characteristics
Clib i Ch i i
-
-------------------------------------------------
-
---------------------------------
C
a
lib
rat
i
on
Ch
aracter
i
st
i
cs
Factory Function Characteristics
Self Test Characteristics
1-2. Accessories 7
Accessories
1-3. Product Inspection 7
Equipment Check
Bi hi Ch k
-
---------------------------
-
-
--------------------------------------------
Bi
o
g
ra
phi
c
Ch
ec
k
1-4. Working Condition 8
1-5. Check Before Input Power 8
Check Power Cord
Check AC Input Power Switch
1-6. Check After Input Power 9
Check Sequence
-
--------------------------------------------
-
------------------------------
-
-
--------------------------------
-
Earliest Settin
g
Value(When Last state Mode is Disabled)
1-7. Product Installation 10
Cooling
Bench Operation
2. Front Panel, Rear Panel Structure & Function
11
-
-------------------------------------------
-
-
-------------
-
2-1. Front Panel Voltage & Current Setting 14
2-2. Rear Panel Structure 15
3. Operating Front Panel
16
Overview 16
-
----------------------------------------
-
-
----------------------
-
------------------------------------------------------
-
-
----------------------------------------
-
3-1. Constant Voltage O
p
eration(CV) 17
3-2. Constant Current Operation(CC) 18
3-3. Remote Voltage Sensing 19
CV Regulation
Output Rating
Output Noise
Stability
-
----------------------------
-
----------------------------
-
---------------------------------
Connecting Remote Voltage Sensing
- 2 -

()
3-4. Programming Over Voltage Protection
(
OVP
)
21
3-5. Programming Over Current Protection(OCP) 23
3-6. Programming Under Voltage Limit(UVL) 25
3-7. Programming Over Voltage Limit(OVL) 26
3-8. Programming Under Current Limit(UCL) 27
3-9. Programming Over Current Limit(OCL) 28
29
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-
------------------
-
------------------
-
------------------
-
------------------
-
------------------
-
3 10 KEY LOCK
29
30
GPIB Set-Up
GPIB Installation Set-Up
RS232C Set-Up
RS232C Installation Set-Up
3-12. V/I & LMT DISPLAY 34
-
-------------------------------------------
-
---------------------------------------------------
-
---------------------------------------------------
-
3
-
10
.
KEY
LOCK
3-11. IO/Local
LMT DISPLAY Function
V/I Function
3-13. Output ON/OFF 35
3-14. Error Message Display 35
ERROR Check
---------------------------------
----------------------------------------------
-
4. CALIBRATION
36
4-1. Characteristics 36
4-2. Preparing Accurate Calibration 36
4-3. Performance of Measuring Instrument for Accurate Calibration --
-
37
4-4. Measuring Technique 37
Equipment Connection
-
-------------------------------------------------
-
---------------------------
-
-
---------------------------------
---------------------------------------------------
-
Electronic Load
Current-Monitoring Resistor(shunt)
DVM(Digital Volt Meter)
Programming
Measuring Position
4-5. Calibration Using Front Panel 39
CALIBRATION KEY Structure
----------------------------
CALIBRATION
KEY
Structure
Voltage CALIBRATION Operation
Current CALIBRATION Operation
4-6. Calibration Using REMOTE INTERFACE 43
Connecting Measuring Instrument
Remote Calibration Command Sequence
Voltage CALIBRATION Operation
Current CALIBRATION Operation
------------------
-
- 3 -

5. FACTORY
45
5-1. Characteristics 45
5-2. FACTORY KEY Structure 45
5-3. USER-MEM CLEAR 46
USER-MEM CLEAR Operation
5-4. LAST STATE 47
LAS S A O i
-------------------------------------------
-
----------------------------------------------
-
-
------------------------------
-
------------------------------------------------------
-
-
------------------------------------------------
-
LAS
T
S
T
A
TE
Op
erat
i
on
5-5. AUTO CURSOR MV 48
AUTO CURSOR MV Operation
5-6. AUTO KEY LOCK 49
AUTO KEY LOCK Operation
5-7. OVP USE 50
OVP USE Operation
----------------------------------------------
-
-
--------------------------------------------
---------------------------------------------------
-
5-8. OCP USE 51
OCP USE Operation
5-9. ADC SAMPLING 52
ADC SAMPLING Operation
5-10. CAL-RESTORE 53
CAL-RESTORE Operation
5
-
11. CAL
-
BACKUP
53
----------------------------------------------
-
----------------------------------------------
-
----------------------------------------------
-
---------------------------------------------------
-
5 11.
CAL BACKUP
53
CAL-BACKUP Operation
5-12. CAL-DEFAULT 54
CAL-DEFAULT Operation
5-13. LOAD DEFAULT 54
LOAD DEFAULT Operation
----------------------------------------------
-
----------------------------------------------
-
6. SCPI Commands
55
-------------------------------------------
-
55
6-2. Commands 55
Output Setting Commands
Measurement Commands
Calibration Commands
Factory Commands
---------------------------------------------------
-
6-1. Commands Syntax
-
--------------------------------------------
Factory
Commands
System Commands
6-3. Apply Commands 57
6-4. Output Voltage/Current Setting & Operation Commands 57
6-5. Measure Commands 62
6-6. Calibration Commands 62
6-7. Factor
y
Commands 63
-
--------
-
-------------------------------------------
-
-
----------------------------------------
-
-
----------------------------------------
-
-
----------------------------------------
-
y
6-8. System Commands 65
-
----------------------------------------
-
- 4 -

7. Error Messa
g
es
68
7-1. Operational Error 68
7-2. Hardware Error 68
--------------------------------- 68
7-4. Calibration Error 70
7-5. Fixed Memory Check Error 70
-------------------------------------------------
7-3. Remote Calibration Error
----------------------------------------------
-
-
-----------------------------------------
-
-
---------------------------
-
-------------------------------------------------
7-6. Interface Commands Error 71
8. Specifications
72
9. Warnings
73
------------------------------------------------------
-
---------------------------------
-------------------------------------------------
9.
Warnings
- 5 -

1. Product Outline
1-1. Product Characteristics
OPX-93D is 0~9V / 0~3A Dual Output Programmable Direct Current Supply Equipment. It is optimized and
designed for mobile testing equipment with 1/2-19inch 3U height. It supports RS-232C and GPIB
Communication follow as SCPI (Standard Commands for Programmable Instruments).
General Functional Characteristics
▌Simple setting using encoder switch.
▌High-accuracy & High-resolution
▌DC-FAN Fail Check Function
▌Output Voltage, Current Shut Off & Recall Function (Output ON/OFF)
▌Front panel's Key Lock Function
▌Alarms in Various Event Occurs
▌Built
-
in Remote Sensing for Load Voltage(V
-
Sensing)
▌Built in
Remote
Sensing
for
Load
Voltage(V Sensing)
▌Over Voltage Protection(O.V.P) / Over Current Protection(O.C.P) Protection Function
▌Under Voltage Limit(U.V.L)/Over Voltage Limit(O.V.L)
▌Under Current Limit(U.C.L)/Over Current Limit(O.C.L)
▌Outstanding Load Regulation & Line Regulation
▌Store & Recall up to 10 Operating Condition(Voltage,Current,OVP,OCP)
▌Store & Recall up to 10 Error Messages
▌1/2-19inch 3U Rack Compact Size
Remote Interface Characteristics
▌RS232C, GPIB Interface Support
▌SCPI(Standard Commands for Programmable Instruments) Compatibility
▌High speed setting & measurement
▌Plenty of Commands Equipped
▌Simple Interface Setting using I/O config on the front panel
▌Product Floating Logic Materialization
▌SCPI Programming Grammar Error Check Function Equipped
Calibration Characteristic
▌Inner Calibration not needed by Software Calibration adoption
▌Simple Calibration Operating using PC Interface or Exclusive
Factory Function Characteristic
▌10 User Memory Reset Function
▌Store & Recall last condition before Power OFF
▌Store
&
Recall
last
condition
before
Power
OFF
▌Auto Key Lock & Auto Cursor Move which prevents users mistake
▌OVP & OCP Disable Setting Function
▌High-speed or Accurate value reading using ADC(Analog to Digital Conversion) Sampling Function
▌Calibration Restore Function
▌Calibration Back-Up Function
▌Please Contact ODA if you need more functions.
Self Test Characteristic
Self
Test
Characteristic
▌Front panel Test ▌ADC H/W Error Test
▌Remote interface Test ▌Memory Data Verification Test
- 6 -

1-2. Accessories
Accessories
▌One 1.5M Power Cord
▌One Spare Fuse
▌One User's Manual
1-3. Product Inspection
Please check below features after opening box. If a problem occurs please ask service
center or main office about A/S service. Please pack the product fully with box package.
Also, check our homepage Q&A for further information.
Equipment Check
▌Check if KEY, Encoder Switch, Power Switch are damaged.
▌Check Scratches on the Name Plate.
▌Check if REAR Terminal is damaged.
▌Check Scratches on the product body.
▌Check Scratches and LCD Dot shatter
▌Check
Scratches
and
LCD
Dot
shatter
.
Biographic Check
▌Check Alarms when the Power is ON.
If there is an alarm, there might be error in the self-test.
Press ERR key to check the Error Code.
Reference
"
7 Error Messages
"
for further details
Reference
7
.
Error
Messages
for
further
details
.
Reference 1-6 check after power on for Self-test
▌Company Name & Model Name will be displayed when the power is ON.
▌If "**OUTPUT OFF**" is displayed without any problem,
read reference Specifications to continue.
Service Center : 82-32-623-5454
Home page : www.odacore.com
Note
- 7 -

1-4. Workin
g
Condition
This product is appropriate in below circumstances.
▌Ambient Temperature : 0 ∼ 40℃
▌Humidity : less than 80%
▌
Altitude : less than 2000m
▌
▌Place where has no vibration
▌Place not be effected by magnetic field
1-5. Check Before Input Power
Check Power Cord
▌Supplied power cord is 3-Wire Ground Type, If you like to use separate power cord,
please use Ground type. Also, Connect power line Earth and products GND before
using the goods.
Check AC Input Power Switch
▌The product is designed single phase with AC100V / AC220V ±10% / 50 60H We set
▌The
product
is
designed
single
phase
with
AC100V
/
AC220V
±10%
/
50
~
60Hz
.
We
set
AC200V when the good is released. The switch is located at the bottom of the product.
<Diagram 1-1 110V/220V Switch>
220V
B O T T O M
AC INPUT
SELECTION
▌Fuse is equipped to protect the product when the product is overloaded.
When the power is OFF even the switch is ON, please check Rear Panel Inlet Fuse Holder.
If the Fuse is damaged, please change with same capacity fuse.
<Diagram 1-2 Fuse Replace>
- 8 -

1-6. Check After In
p
ut Power
When Power supply is ON, it will start setting & self-testing. Also, it maintains previous
Remote Interface setting, output voltage is 0V, output current is maximum.
(When the product is released, last state setting is disabled).
OVP & OCP will be set on maximum value of the product.
Check Sequence
▌"
ODA T h l i
"illbdil d
▌"
ODA
T
ec
h
no
l
o
gi
es
"
w
ill
b
e
di
s
pl
a
y
e
d
.
▌"OPX-93D Ver x.x" will be displayed.
▌Front OVP,OCP,RMT,ERR Lamp will be lighted clockwise and lighted out
CV Lamp light-off/CC Lamp light-on/CV Lamp light-on/CC Lamp light-on & off.
▌While above features are displaying, a reset will be done by fixed memory.
▌Also, Self-Test will proceed, and if there is an error, error code will be saved.
You could press ERR Key to see the error code
You
could
press
ERR
Key
to
see
the
error
code
.
Read Reference "7. Error Messages" for further details.
Earliest Settin
g
Value
(
When Last state Mode is Disabled
)
▌OVP : OVP Maximum value Set-up, OVP ON
▌OCP : OCP Maximum value Set-up, OCP ON
▌UVL : 0V
▌OVL
:
Maximum Limit Set
-
up
▌OVL
Maximum
Limit
Set up
▌UCL : 0A
▌OCL : Maximum Limit Set-up
▌Output Voltage : 0V
▌Output Current : Maximum Limit Set-up
▌Remote Interface : Maintain previous Set-up
▌Condition after self-testing : "**OUTPUT OFF**"
▌Cursor Location : Default Voltage Select
Vlt :01VS l
V
o
lt
a
g
e
:
0
.
1V
S
ca
l
e
Current : 0.1A Scale
▌KEY LOCK : OFF
GPIB in Remote Interface will be selected when the good is released. Channel 1 address is 5,
Channel 2 address is 6.
Last State is disabled when the good is released, to recall Voltage/Current & other Set-up,
Note1
Note2
use factory mode to Set-up.
- 9 -

1-7. Product Installation
Cooling
▌The product is guaranteed in 0℃ ~ 40℃ condition, so please consider the place to use.
In area 40℃ ~ 55℃, reduce output current 0~70%.
When it is installed in Rack, please consider about ventilation.
<Diagram 1-3 Bottom view>
Bench Operation
▌There should be spare spaces on products side front rear for ventilation
▌There
should
be
spare
spaces
on
products
side
,
front
,
rear
for
ventilation
.
Bottom has no ventilating opening, can be used directly.
- 10 -

2. Front Panel, Rear Panel Structure & Function
113
2 14 Right Displace Cursor & Menu change Key
3 15 Variable Encoder
4 16 Positive Output
5 17 Negative Output
6 18 Remote Voltage Sensing Positive Input
7 19 Remote Voltage Sensing Negative Input
8
20
Error Lamp
Channel1(P1) 16Char Type LCD Display
Channel2(P2) 16Char Type LCD Display
CV Mode Lamp
CC Mode Lamp
Left Displace Cursor & Menu change Key
OVP Set-up Condition Lamp
OCP Set-up Condition Lamp
Remote Interface Lamp
Earth Connection Terminal
8
20
921
10
11
12
Error
Lamp
Output Voltage/Current Limit Display Key
I/O LOCAL, Error, Calibrate Key
Protect, Lock, Factory Key
Output Voltage/Current ON/OFF Key
Earth
Connection
Terminal
Main Power ON/OFF Switch
- 11 -

1. Channel 1(P1) 16Char Type LCD Display
Menu which shows Channel 1 Voltage/Current value, Option, Various Menu.
2. Channel 2(P2) 16Char Type LCD Display
Menu which shows Channel 2 Voltage/Current value, Option, Various Menu.
From the sight of front side, Channel 1 and Channel 2 are bisymmetry,
independent control method. They are explained below.
independent
control
method.
They
are
explained
below.
3. CV Mode Lamp
In CV(Constant Voltage) Mode, the lamp is lighted.
4. CC Mode Lamp
In CC(Constant Current) Mode, the lamp is lighted.
5OVPSt C diti L
5
.
OVP
S
e
t
-u
p
C
on
diti
on
L
am
p
When in Over Voltage Protection is Set-up, the lamp will be lighted.
They can be changed in Factory Mode.
6. OCP Set-up Condition Lamp
When in Over Current Protection is Set-up, the lamp will be lighted.
They can be changed in Factory Mode.
7. Remote Interface Lamp
When remote interface is recalled, Lamp will be lighted,
Front panel cannot be used in this condition.
8. Error Lamp
When any Error occurs, Lamp will be lighted, when all the error message is checked,
Lamp will be light-out.
9. Output Voltage/Current ON/OFF Key
Print or Shut off Voltage/Current from Output Terminal.
10. Voltage/Current Select & Limit Display Key
Able to move the cursor to Voltage or Current, and check the present output Voltage/Current.
11. I
/
O LOCAL
,
Error
,
Calibrate Ke
y
/,, y
Set-up RS232C or GPIB, Check Error Message & Calibrate output Voltage/Current.
12. Protect, Lock, Factory Key
Set-up protections such as OVP/OCP/UVL/OVL/UCL/OCL and etc.
Press lock key more than 1second to lock the keys on Front Panel.
Also, Factory Mode has various options to set-up.
- 12 -

13. Left Displace Cursor & Menu change Key
Change Voltage/Current Range, Cursor will move Left.
In Menu Mode, it can be used to change Menu left side.
14. Right Displace Cursor & Menu change Key
Change Voltage/Current Range, Cursor will move Right.
In Menu Mode, it can be used to change Menu right side.
In
Menu
Mode,
it
can
be
used
to
change
Menu
right
side.
15. Variable Encoder
If the encoder rotate left(CCW), value will fall. If it rotate right(CW), value will rise in numerical
menu mode or Voltage/Current.
16. Positive Output
Output Terminal Voltage/Current Positive (+).
17. Negative Output
Output Terminal Voltage/Current Negative (-).
18. Remote Voltage Sensing Positive Input
Input Positive to load to supply accurate voltage.
19. Remote Voltage Sensing Negative Input
19.
Remote
Voltage
Sensing
Negative
Input
Input Negative to load to supply accurate Voltage.
20. Earth Connection Terminal
When the load need Earth, connect this terminal.
21. Main Power ON/Off Switch
Switch which provide or shut off AC input Power.
- 13 -

2-1. Front panel Voltage Current Setting
Use Below Method to Set-up limit value.
1. Check whether "**OUTPUT OFF**" is dis
p
la
y
ed after Power ON.
py
2. In front sight of view, left side is channel 1(P1), right side is channel 2 (P2).
3. Press V/I LMT Key to move on to Limit Mode.
4. Left cursor Key increases the digit, right cursor Key decreases the digit.
5. To raise Limit value, rotate encoder clock-wise.
To reduce it, rotate encoder anti clock-wise.
6. Check Set-up value is successfully changed on LCD Display.
7. Press OUTPUT ON/OFF Key to output set-up Voltage/Current.
Note1
If it is in Remote Interface condition, Front panel Key & encoder switch will not work.
To change channel in to Local, press I/O LOCAL Key to disable Remote Interface.
Note1
- 14 -

2-2. Rear Panel Structure
15
26
37
4
1. Model Name & Serial Number
Sticker which involves product model name & Electronic capacity, fuse capacity, serial number.
Ventilating Opening
Model Name & Serial Number
AC Input Inlet
Channel 2(P2) RS232C Port
Channel 1(P1) GPIB Port
Channel 2(P2) GPIB Port
Channel 1(P1) RS232C Port
Sticker
which
involves
product
model
name
&
Electronic
capacity,
fuse
capacity,
serial
number.
2. Channel 1(P1) RS232C Port
RS232C Interface Port which controls Channel 1(P1).
3. Channel 1(P1) GPIB Port
GPIB Interface Port which controls Channel 1(P1).
4 Ch l 2(P2) RS232C P t
4
.
Ch
anne
l
2(P2)
RS232C
P
or
t
RS232C Interface Port which controls Channel 2(P2).
5. Channel 2(P2) GPIB Port
GPIB Interface Port which controls Channel 2(P2).
6. AC Input Inlet
AC
input
has
110/220V
50
-
60Hz,
it
is
selected
220V
when
the
product
is
released.
AC input has 110/220V 50 60Hz, it is selected 220V when the product is released.
7. Ventilating Opening
The good inhales air from side, and ventilate to rear side.
- 15 -

3. Operating Front panel
When there is no event for 10 seconds or by pressing I/O LOCAL, PROTECT Key,
The menu will move in to Local Mode Automatically.
Menu select & check key provides simple and convenience to users.
Overview
1. Constant Voltage (CV)
Explanation of Constant Voltage output Mode.
2. Constant Current (CC)
Explanation of Constant Current output Mode.
3. Remote Voltage Sensing
Explanation of Load voltage sensing.
4. Programming Over Voltage Protection(OVP)
Explanation of programming over voltage protection.
5. Programming Over Current Protection(OCP)
Explanation of programming over current protection.
6 Programming Under Voltage Limit(UVL)
6
.
Programming
Under
Voltage
Limit(UVL)
Explanation of programming under voltage limit.
7. Programming Over Voltage Limit(OVL)
Explanation of programming over voltage limit.
8. Pro
g
rammin
g
Under Current Limit(UCL)
Explanation of programming under current limit.
9. Programming Over Current Limit(OCL)
9.
Programming
Over
Current
Limit(OCL)
Explanation of programming over current limit.
10. KEY LOCK
Explanation of Front panel's lock and disable.
11. I/O LOCAL
Explanation of Remote Interface Set-up/Local mode & Error Message Display.
12. V/I & LMT DISPLAY
Ex
p
lanation of Volta
g
e/Current Set-u
p
value or actual out
p
ut value.
13. Output ON/OFF
Explanation of output voltage shut-off & permission output condition.
14. Error Message Display
Explanation of checking Power Supply's error message.
- 16 -

3-1. Constant Voltage Operation(CV)
Constant Voltage output Mode, Follow the sequence below. (When Last State Mode is disabled.)
▌Power Switch ON
Check "**OUTPUT OFF**" Mode when the power is ON.
▌Connect load to output terminal.
▌Press V/I LMT Key to set-up the Limit value.
▌To set-up voltage, use cursor key. Move cursor key to voltage range,
and use encoder switch to set-up the voltage.
In mode Protection(OVP/UVL/OVL), voltage cannot rise more than Protection
level, if user tries to raise more than Protection Limit, "PROTECTION LIMIT"
Message will be displayed, and set-up in Protection Level value.
▌Setting higher current value than load current value will prevent damage,
use current set-up below.
▌To set-up the current, press V/I LMT Key, and move cursor to Current.
▌Use Cursor key and Encoder switch to set-up higher current value than the load.
In Protection(OCP/UCL/OCL) mode, current cannot rise more than Protection
level ifusertriestoraisemorethanProtectionLimit
"
PROTECTION LIMIT"
level
,
if
user
tries
to
raise
more
than
Protection
Limit
,
PROTECTION
LIMIT
Message will be displayed, and set-up in Protection Level Value.
▌Press OUTPUT ON/OFF Key when all the set-up is done.
LCD Display displays readback Voltage/Current.
▌Check CV Lamp is ON, CC Lamp is OFF.
If the lamp is ON and OFF opposite, check if there is enough current
supplying to the load Raise current Limit Value
supplying
to
the
load
.
Raise
current
Limit
Value
.
When V/I LMT Key is pressed, it displays the limit value. By pressing once more, users are able
to change voltage/current cursor.
Note1
What is ReadBack Display? Displaying actual output voltage and current.
Note2
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