I-Tech IT6720 User manual

Copyright 2010 All Rights Reserved
Ver2.0/Jan, 2010/ IT6720
USER’S GUIDE
Digital Control Power Supply
Model IT6720

WARNING
Safety Regulations
To avoid electrical shock, do not open the cabinet. Refer servicing to qualified personnel
only.
To avoid injuries, always disconnect power, discharge circuits, and remove external voltage
sources before touching components.
KEEP AWAY FROM LIVE CIRCUITS.
We cannot accept responsibility for any direct or indirect nancial damage or loss of prot
that might occur when using the power supply.
The instrument chassis and cover must be connected to an electrical ground.
Certication
We certify that this product met its published specifications at time of shipment from the
factory.
Notice
The information contained in this document is subject to change without notice.
Warranty
This hardware product is warranted against defects in material and workmanship for a
period of ONE year from date of delivery. IT6720 power supply for use with a hardware
product and when properly installed on that hardware product, are warranted not to fail to
execute their programming instructions due to defects in material and workmanship for a
period of 90 days from date of delivery. During the warranty period our company will either
repair or replace products which prove to be defective. Our company does not warranty that
the operation for the software rmware or hardware shall be uninterrupted or error free. For
warranty service, with the exception of warranty options, this product must be returned to a
service facility designated by our company. Customer shall prepay shipping charges by (and
shall pay all duty and taxes) for products returned to our place for warranty service. Our
company shall pay for return of products to Customer.
Limitation of Warranty
The foregoing warranty shall not apply to defects resulting from improper or inadequate
maintenance by the customer, customer-supplied software or interfacing, unauthorized
2 USER’S GUIDE

USER’S GUIDE 3
modication or misuse, operation outside of the environmental specications for the product,
or improper site preparation and maintenance.Product number or serial number has been
altered deleted, removed or were unable to identify. Damage from the accident, including but
not limited to lightning, water, re, abuse or negligence.
Compliance Statements
Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and
other European countries with separate collection systems)
Safety Symbols
About IT6720
With widest voltage and current range, IT6720digital DC power supplies are applied in many
elds.
With max power 100W and output adjustable in 60V/5A, auto control voltage/current slew
rate, power rate up to three times rapid than other similar products, a unit can replace three
models (60V*1.6A/ 32V*3A/ 20V*5A), reduce your repeat investment.
The ITECH product you have purchased is subject to
Directive 2002/96/EC of the European Parliament and
the Council of the European Union on waste electrical
and electronic equipment (WEEE) and, in jurisdictions
adopting that Directive, is marked as being put on
the market after August 13, 2005, and should not be
disposed of as unsorted municipal waste. Please utilize
your local WEEE collection facilities in the disposition
of this product and otherwise observe all applicable
requirements.
Connect it to safety earth ground using the wire recommended in the user’s manual.
The symbol on an instrument indicates that the user should refer to the operating
instructions located in the manual.
High voltage danger

Example:
When you set the output voltage as 60V, because
the max power of IT6720 is 100W, so the max output
current is 100W/60V=1.6A.
When you change the output voltage to 30V, the output
current is 100W/30V=3.2A.
Calculate according to the above way when the output
voltage is 20V, the output current should be 5A, but as
the max rating current of IT6720 is 8A, so the nal max
output current is 5A.
12 3 4 5
20
40
60
I
V
Power
100%
Function
• Fully digital control
• High resolution 10mV/1mA in Full range
• Low ripple and noise
• Bright and easy to read display (LED)
• Constant current and constant voltage output
• High reliability OVP/OCP/OTP protection
• Output on/off control
• Best performance /price ratio
• Storage for 4*100 preset voltage and current output
4 USER’S GUIDE
IT6720 output curve

Panel Layout
Main Power ON/OFF
Output ON/OFF Button
Voltage Value
Current Value
Step A + Memory A
Step C + Memory C
Step B + Memory B
Step D + Memory D
Left arrow + Memory AButton
Enter + Memory C Button
Keyboard (Shift)
Memory save (Shift)
Air flow input
Main Power ON/OFF
Output ON/OFF Button
Voltage Value
Current Value
Step A + Memory A
Step C + Memory C
Step B + Memory B
Step D + Memory D
Left arrow + Memory AButton
Enter + Memory C Button
Keyboard (Shift)
Memory save (Shift)
Air flow input
Output +
Output –
Ground
Rotary Encoder
Output OFF Indicator
Shift Indicator
Keyboard Lock Indicator
Memory mode Indicator
OVP Indicator
OCP Indicator
CV mode Indicator
CC mode Indicator
Voltage setup Indicator
Right arrow + Memory B Button
ShiftButton
Setup Display (Shift)
Function Setup (Shift)
Output +
Output –
Ground
Rotary Encoder
Output OFF Indicator
Shift Indicator
Keyboard Lock Indicator
Memory mode Indicator
OVP Indicator
OCP Indicator
CV mode Indicator
CC mode Indicator
Voltage setup Indicator
Right arrow + Memory B Button
ShiftButton
Setup Display (Shift)
Function Setup (Shift)
Panel Layout
USER’S GUIDE 5
Set V and I value + Memory D

Check out
Conrm whether the power supply has been destroyed in transportation, if there is any aw, please contact
the vender.
Conrm whether the AC input voltage of IT6720 comply with the standards of your country or region.
Quick Start
Note: If switching input voltage, operate through the back panel switch (110V/220V).
After the check of the above matters, power on by press
II
Setting the voltage
Press to light up the voltage setup
indicator B. It means IT6720 is in voltage
set mode, shown as g 1.
Press light up the voltage
setup indicator . Now the voltage will
rise/decline 1V once you rotary the knob
. Set the voltage to 12V.
DV/A DV/A
AA
BB
B
Setting the current
Press to light up the current setup
indicator A. IT6720 is in current set mode,
shown as g 2.
Press to adjust the setup
indicator to . Now the current will rise/
decline 1V once you rotary the knob .
Set the current to 4A.
DV/A DV/A
AA
BB
A
V
A
CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
Auto Range DC Power Supply
IT6720 60V/5A/100W
Preset voltage
Step indicator B
示灯
V
A
CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
Auto Range DC Power Supply
Preset current indicator
Step indicator A
IT6720 60V/5A/100W
Quick Start
6 USER’S GUIDE

Enable output
Press to enable the IT6720 output.
Voltage and current settings will be
wink for three seconds, and after that ,
the display value of numerical display
will change from the set value to actual
measured voltage and current value.
Power off lights will be turned off which
means the power is in output state.
Press again, you will shut power
supply’s output.
On/Off
On/Off
V
A
CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
IT672060V/5A/100W
Auto Range DC Power Supply
Output off indicator
Cursor position Step voltage Step current
10V 1A
1V 0.1A
0.1V 0.01A
0.01V 0.001A
A
B
C
D
Step value for Cursor Position
Check the set voltage and current value
The power supply usually displays the actual voltage and current values. When you want to check
the preset voltage and current values, the unit will display automatically settings, press twice,
the settings will be displayed for three seconds.
Shift
Key lock function
This function can prevent error operation by unauthorized person. Press , after the was
lit on, press (Lock) , will be lit on, which means all keys on the panel except and
. Repeat above operation, key lock function will be disabled.
Shift
Shift
C
C
C
Shift
Lock
On/Off
Quick Start
USER’S GUIDE 7

OVP function
Press , and press for three
seconds, now the panel displays OVP,
shown as g 4.
Use and to set OVP
value.
DV/A DV/A
AA
BB
Shif
t
OCP function
Press to enter into OCP setting
interface after setting OVP value, use
and to set the OCP
value.
AA
BB
C
C
C
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
OVP voltage value
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
OCP current value
Note: If the OVP and OCP settings are lower than the actual voltage/current
value, the output of power supply will be turned off. The default settings of IT6720
are OVP=61V, OCP=5.1A.
Quick Start
8 USER’S GUIDE

Key sound (BEEP)
Press to enter the BEEP setting
Interface after finished the OCP
setting,select the ON/OFF state with
the knob .ON indicates there is
key sound,OFF means no.
C
C
C
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
Power address (ADD)
Press to enter the ADD setting
interface after finishing the BEEP
setting, select the and to
enter store address setting. ADD
range: 0~30, press to conrm.
AA
BB
C
C
C
C
C
C
Store group setting (GRP)
Press to enter into GRP interface
after setting the OCP value, use
and to select store group.
IT6720 allows customers to store 100
groups with A/B/C/D four set value for
every group.
Press to conrm the chosen group
and end the setup mode.
AA
BB
C
C
C
C
C
C
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
V
A
IT672060V/5A/100W
Auto Range DC Power Supply CV CC
OVPOCP
OFFShift
Lock Prog
ITECH
ABCD
Store operation
In the normal working mode, set the voltage/current value to be stored. Press and , now
the Cursor will wink together. Press any key in to save it.
Shift
AAAAA
A
AAAAAAAAAAAAAA
A
AAAAA
A
AAAAAAAAAAAAAA
A
BBBBB
B
BBBBBBBBBBBBBB
B
DV/A DV/A DV/A DV/A DV/A
D
DDDDDDDDDDDDDD
V
VVVVVVVVVVVVVV
/
//////////////
V
V
V
V
VV
VVV
VVVV
VVVVVVV
VVVVVVVV
VVVVVVVVVVVVVVV
A
AAAAAAAAAAAAAA
DV/A
C
A C D
B
Quick Start
USER’S GUIDE 9

Recall operation
Press and , the indicator will be lit on, which means that IT6720 working in the
shortcuts mode. Press any key in , recall the preset voltage/current value
which has been stored.
When the power supply is on recall operation, that means all you can recall the parameters from the
store group. Press any key of to recall the stored parameter.
When the power supply is on recall operation are disabled, they only can
be used with key. Press , and press to exit recall function.CC
Shift
ShiftShift
AAAAA
A
AAAAAAAAAAAAAA
A
BBBBB
B
BBBBBBBBBBBBBB
B
DV/A DV/A DV/A DV/A DV/A
D
DDDDDDDDDDDDDD
V
VVVVVVVVVVVVVV
/
//////////////
V
V
V
V
VV
VVV
VVVV
VVVVVVV
VVVVVVVV
VVVVVVVVVVVVVVV
A
AAAAAAAAAAAAAA
DV/A
C
AAAAA
A
AAAAAAAAAAAAAA
A
BBBBB
B
BBBBBBBBBBBBBB
B
DV/A DV/A DV/A DV/A DV/A
D
DDDDDDDDDDDDDD
V
VVVVVVVVVVVVVV
/
//////////////
V
V
V
V
VV
VVV
VVVV
VVVVVVV
VVVVVVVV
VVVVVVVVVVVVVVV
A
AAAAAAAAAAAAAA
DV/A
C
AAAAA
A
AAAAAAAAAAAAAA
A
BBBBB
B
BBBBBBBBBBBBBB
B
DV/A DV/A DV/A DV/A DV/A
D
DDDDDDDDDDDDDD
V
VVVVVVVVVVVVVV
/
//////////////
V
V
V
V
VV
VVV
VVVV
VVVVVVV
VVVVVVVV
VVVVVVVVVVVVVVV
A
AAAAAAAAAAAAAA
DV/A
C
BBB
B
BBB
B
BBB
B
BBB
B
ProgProg
Quick Start
10 USER’S GUIDE