I-Tech IT6724 User manual

IT6700 User manual
User Manual
1
USER’S MANUAL
Programmable HV Power Supply
Model IT6700 Series
IT6723/IT6724/IT6723C
/IT6724C/IT6723B/IT6724B/IT6726B
/IT6723H/IT6724H/IT6726H
/IT6723G/IT6724G/IT6726G/IT6726V
©Copyright All Rights Reserved
Ver1.1/OCT, 2012/ IT6700
Via Acquanera, 29 22100 Como
tel. 031.526.566 (r.a.) fax 031.507.984
[e-mail] www.calpower.it

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IT6700 Series Programmable HV Power Supplies ...............................................................3
Security.................................................................................................................................3
Security regulation ................................................................................................................3
Safety symbols......................................................................................................................3
Certification and Quality Assurance......................................................................................3
Introduction ...........................................................................................................................5
Chapter1 Inspection and Installation................................................................................................6
1.1 Inspection.................................................................................................................................................... 6
1.2 To Rack Mount the Instrument................................................................................................................. 6
1.3 The size of the power supply ................................................................................................................... 7
Chapter 2 Quick Start..........................................................................................................10
2.2 Key introduction........................................................................................................................................ 12
2.3 VFD Indicator Description....................................................................................................................... 13
Chapter 3 power on check ..................................................................................................14
3.1 power on Pre-check................................................................................................................................. 14
3.1.1 Power on the supply..................................................................................................................... 14
3.1.2 System self-check......................................................................................................................... 15
3.2 Output Checkout ...................................................................................................................................... 16
Chapter4 technical specification .........................................................................................17
4.1 main technical parameters ..................................................................................................................... 17
4.2 supplementary characteristic ................................................................................................................. 22
Chapter5 Basic operation ...................................................................................................23
5.1 Local/Remote Mode ................................................................................................................................ 23
5.2 Voltage Setup ........................................................................................................................................... 23
5.3 Current Setup ........................................................................................................................................... 24
5.4 Output On/Off Operation......................................................................................................................... 24
5.5 Setup value/Actual value switching....................................................................................................... 24
5.6 Voltage/Current/Power adjustment........................................................................................................ 24
5.7 Save/recall Operation.............................................................................................................................. 25
5.8 Trigger operation ...................................................................................................................................... 25
5.9 Menu operation ........................................................................................................................................ 25
5.9.1 Menu description .......................................................................................................................... 25
5.9.2 Menu functions.............................................................................................................................. 27
5.10 OVP function .......................................................................................................................................... 31
5.11 Key Lock function................................................................................................................................... 31
5.12 Remote sense function ......................................................................................................................... 31
Chapter6 Remote Operation Mode ............................................................................................ 33
6.1 RS232 interface........................................................................................................................................ 33
6.2 USB interface............................................................................................................................................ 34
6.3 GPIB interface .......................................................................................................................................... 35

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IT6700 Series Programmable HV Power Supplies
Security
Please do not install replacement parts in the instrument, or perform any unauthorized
modification. Please send the instrument to our company's maintenance department for
maintenance, to ensure its security features.
Please refer to the manual for specific information warning or precautions to avoid personal
injury or equipment damage.
There is no part that the operator can maintenance. If maintenance service is required,
please contact a trained service personnel.
Security regulation
To prevent electric shock, non-authorized personnel is strictly not allowed to open the
machine.
This equipment is strictly prohibited for use in life support systems or any other device with
security requirements.
We cannot accept responsibility for any direct or indirect financial damage or loss of profit
that might occur when using the electronic load.
Safety symbols
Warning
It reminds the user, note some operating procedures, practices, conditions and other
matters, that may lead to human casualties.
Notes:
It reminds the user of some operating procedures, practices, conditions and other matters
that may result in instrument damage or data lose for ever.
Connect it to safety earth ground using the wire recommended in the user
manual.
High voltage danger
The symbol on an instrument indicates that the user should refer to the operating
instructions located in the manual.
Certification and Quality Assurance
IT6700 series programmable DC power supply fully meet all of the technical specification in
the manual.
Warranty
Our Company provide one year warranty for the materials and manufacturing of the product
since the date of shipment.

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Warranty Service
For the warranty service or repair the product, the product must be returned to the
designated maintenance units. Return the product to us for warranty service, the customer
should pre-pay the one-way Freight to the maintenance department. and our company is
responsible for the return shipping cost.
If products are returned from other countries for maintenance service, then the customer
should pay all freight, duties and other taxes.
Guarantee limit
The guarantee does not apply to the damage caused by the following conditions:
Improper or inadequate maintenance to the products by customer;
Customers use their own software or interface;
Unauthorized modification or misuse;
●Operate this product not in the specified environment, or at the wrong place
configuration and maintenance.
●Damage from Customer self-installation of circuit, or defects due to customers use their
products .
●Product model or serial number of the fuselage has been altered, deleted, removed or
made illegible;
●Damage caused by accidents including but not limited to lightning, water, fire, abuse or
neglect.
Notice
If the content of this manual is subject to change, we will not notice additionally

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Introduction
IT6700 series power supplies are high performance single-output programmable DC power
supplied with communication interface. This series of programmable DC power supply can
output the maximum voltage or current with a fixed power for customers. Take IT6723H
(300V/10A/850W) for example, when you select 300V for the output voltage, the output
power of IT6723H is 850W , so in this case the maximum output current is 850W/300V =
2.83A. When you select 85V for the output voltage, the maximum output current 850W/85V
= 10A, but when the output voltage is down to 10V, due to IT6723H maximum current is 10A,
so in this case the maximum output current is 10A. IT6700 series power comes with a
standard communication interface RS232/USB/GPIB, both desktop and system-based
features, can be designed and tested according to your needs and provide multi-purpose
solutions.
Convenient bench-top features:
• High visibility vacuum fluorescent display (VFD)
• Output is switch control
• High accuracy and high resolution
• Intelligent fan control, energy conservation, noise reduction
• Standard communication interface RS232/USB/GPIB
• Output voltage and current values accordance with procedure
• Can use the knob to adjust the voltage and current
• Can adjust the knob stepping using the cursor
Optional Accessories: IT-E151 rack mount kit.（IT6726 not available）
Model Voltage Current Power
IT6723 80V 40A 850W
IT6724 80V 40A 1500W
IT6723B 150V 20A 850W
IT6724B 150V 20A 1500W
IT6723H 300V 10A 850W
IT6724H 300V 10A 1500W
IT6726H 300V 20A 3000W
IT6723G 600V 5A 850W
IT6724G 600V 5A 1500W
IT6726G 600V 10A 3000W
IT6726V 1200V 5A 3000W
IT6723C 32V 110A 850W
IT6724C 32V 110A 1500W
IT6726B 160V 40A 3000W

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Chapter1 Inspection and Installation
Power supply is a high level safety equipment, there is a protected ground terminal.
Before Installation or operation, please read the safety signs and instructions in this manual
1.1 Inspection
After received the power supply, follow these steps to check it:
1. Check for damage in the equipment during transport
If it is the frame, panel damaged, or abnormal working, etc. Please contact immediately with
our authorized dealer or service department. Do not return the instrument before positive
response has not been got.
2. Check the attachment
Make sure you receive the power and the following components at the same time, if any
missing, please contact your nearest dealer.
□a power cord (in accordance with the standard voltage used in the region)
□an operating manual.
□a factory calibration report
Kinds of power cord
E
NL
E
LN
E
NL
E
LN
China USA ,Canada Europe UK
IT-E171 IT-E172 IT-E173 IT-E174
3. The power input requirements
Working voltage for IT6723/IT6723B/IT6723C/IT6723H/IT6723G is 110V and 220V;Working
voltageforIT6724/IT6724B/IT6724C/IT6724H/IT6724G/IT6726H/IT6726G/IT6726V/IT6726B
is 220V, so please pay attention to the working input voltage. There is a power cord which
matches with your local power in the attachment. If that does not match, please do not
hesitate to contact with our authorized dealer or service department.
AC input levels : (can choose via the switch on the bottom or power supply)
Option Opt.01:220VAC ± 10%, 47 to 63 Hz
Option Opt.02:110VAC ± 10%, 47 to 63 Hz
1.2 To Rack Mount the Instrument
You can mount IT6700 power supply in a standard 19-inch rack cabinet using the IT-E151
(except for IT6726H/IT6726G/IT6726V/IT6726B) rack mount kit.
Method to remove the handle:
Pull up carrying handle to each outside, rotate it to vertical direction and pull out.

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Install method of IT-E151
Remove the carrying handle and the two pale green stickers before rack-mounting the
instrument on standard 19’’ IT-E151. Mounting specification is as following:
Fix a plastic fitting screwed to the original handle installation position, then fix accessories 1
and mount accessories 2 to the following icon position. The method to fix two power
supplies on rack is screw two plastic fittings in original handle installation position, mount
accessories 1 after that.
Drawing1.1 To rack mount a single instrument, order rack mount kit IT-E151
Drawing1.2 To rack mount two instruments side-by-side, order rack mount kit IT-E151, you
needn’t to use the front cover panel.
1.3 The size of the power supply
1.SizeofIT6723/IT6724/IT6723B/IT6724B/IT6723C/IT6724C/IT6723H/IT6724
H/IT6723G/IT6724G:
214.5mmW×88.2mmH×445mmD
*refer to the Dimensions below:
A
ccessories 1
A
ccessories 2

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Unit：mm
Size of IT6726H/IT6726G/IT6726V/IT6726B: 439mmW×88.2mmH×462mmD

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Chapter 2 Quick Start
This chapter introduces the front panel, the rear panel, key functions and VFD display
function of the power supply, make sure that you can quickly know the appearance,
instruction and the key function before you operate the power supply, Help you make better
use of this series of power supply.
2.1 The front and rear panel description
FrontpanelofIT6723/IT6724/IT6723B/IT6724B/IT6723C/IT6724C/IT6723H/IT6724H/IT672
3G/IT6724G:
1
VFD display
2
Rotary knob
3
Compound key, the local switch key and power switch
4
Number keys and ESC
5
Function keys
6
UP、DOWN, LEFT and RIGHT key, to move cursor
7
Output terminals
+ -

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Front panel of IT6726H/IT6726G/IT6726V/IT6726B:
1
Power switch
2
VFD display
3
Compound key, the local switch key and power switch
4
Number keys and ESC
5
Function keys
6
UP、DOWN, LEFT and RIGHT key, to move cursor
7
Rotary knob
Rear panel of IT6723/IT6724/IT6723B/IT6724B/IT6723C/IT6724C/IT6723H/IT6724H/IT67
23G/IT6724G:
1
Cooling fans
2
RS232 Communication interface
3
USB Communication interface
4
GPIB Communication interface
5
Remote sense terminal and the output terminal
6
Fuse
7
AC power socket

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Rear panel of IT6726H/IT6726G/IT6726V/IT6726B:
1
Cooling fans
2
RS232 Communication interface
3
USB Communication interface
4
GPIB Communication interface
5
AC power socket
6
Fuse
7
Output terminal
2.2 Key introduction
Key description, see the table below:
Keys Name and the function
Shift Compound key，co-work with OVP、Menu、Save、Trigger、Lock
Local Local switch key, switch from remote mode to local operation mode
Power Power on key
0-9 Numeric keys
V-setV-set
OVP Voltage set key, set the output voltage/over voltage protection point
for the power supply
I-setI-set
Menu Current set key, set the output current/menu function key, to set the

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relevant Parameters for the power supply
Recall
Save Callback key to call up a set value of system parameters already
stored / storage key, to save system parameter settings
MeterMeter
Meter key, to switch from value set panel and the actual output value
EnterEnter
Trigger Enter key, to confirm the number entered and operation / trigger
button, which is used to trigger the List test.
On/Off
Lock Output on (off) keys, control power output state / keypad lock function
keys, used to lock the panel buttons
Left and right movement keys, used to set the value, to adjust the
cursor to the specified location
Up and down keys, used to select a item in the menu or increase
(decrease) the output voltage or current values
Cancel /return keys
2.3 VFD Indicator Description
VFD indicator function description as follow:
Char Function description Char Function description
OFF Output is off Timer Output on timer function is
ON
CV The power supply is in
constant voltage mode Sense No
CC The power supply is in
constant current mode Ext No
* No Adrs （USB GPIB）light when the
address match or (RS232)
received order
Meter Meter mode Rmt The power supply is in remote
mode
Shift Use compound keys Error The power supply has error or
fault
OVP OVP function state on Prot OVP /OTP/OCP Protection
OCP OCP function state on Lock Key operation is locked

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Chapter 3 power on check
This chapter will introduce the procedure of power on check, including pre-check and
output check, to make sure the IT6700 series power supply can power on and work normally
on the original state.
3.1 power on Pre-check
Before operate the power supply, please read the following safty guide:
Warning：The power supply is shipped from the factory with a power-line cord
that has a plug appropriate for your location. Your power supply is
equipped with a 3-wire grounding type power cord; the third conductor
being the ground. The power supply is grounded only when the
power-line cord is plugged into an appropriate receptacle.
Warning：Use wire with appropriately rated load capacity of all load wires must
be able to withstand the maximum short-circuit output current of the
power without overheating. If there is more than one load, each load wire
must be able to safely carry the power of full rated short-circuit output
current.
Warning：In order to reduce the risk of fire and electric shock, make sure that the
mains supply voltage fluctuations should not exceed 10% of the operating
voltage range.
Note: In some cases, misconfiguration mains voltage for the instrument may cause
the mains fuse disconnect.
Note：If use the power supply to charge the battery, be sure to pay attention to the
battery's positive and negative polarity, otherwise it will burn out the power!
Power on pre-check includes two parts: power on the supply and system self check.
3.1.1 Power on the supply
Use the following steps to help solve problems you might encounter when turning on
the instrument.
1) Verify that there is AC power to the power supply.
First, verify that the power cord is firmly plugged into the power receptacle on the rear
panel of the power supply. You should also make sure that the power source you plugged
the power supply into is energized. Then, verify that the power supply is turned on.
2) Verify the power-line voltage setting.
The line voltage is set to the proper value for your country (220VAC) when the power
supply is shipped from the factory. Change the voltage setting if it’s not correct.

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3) Verify that the correct power-line fuse is installed.
If the fuse was damaged, please see the table below to replace the fuse for your power
supply.
Model Fuse Specifications（220VAC）Fuse Specifications（220VAC）
IT6723/IT6723B/IT6723C/I
T6723H/IT6723G T15AT 250V T15AT 250V
IT6724/IT6724B/IT6724C/I
T6724H/IT6724G T15AT 250V Not available
IT6726H/IT6726G/IT6726V
/IT6726B T20AT 250V Not available
4) How to exchange the fuse
Open the fuse box:
Use a screwdriver to push and turn the fuse box on the rear panel of the power supply,
refer to the below picture. After the fuse box is opened, you can see the fuse in it. Please
replace with a fuse of the same specification.
When install, use a screwdriver to push and turn the fuse box. Refer to the picture
below.
3.1.2 System self-check
After power on normally, the supply will enter self check test first.
If the power supply is normal, then VFD will display the output voltage and current
status as below:
About 1 second after power on，If the EEPROM was damaged or the latest operation
data in EEPROM was lost, the VFD will display as below:
If the last power status in EEPROM is lost, then VFD will display information (about 1 S)
as below:
EEPROM FAIL
SYST LOST
OFF
0.0V 0.00A

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If the calibration data in EEPROM is lost, then VFD will display (about 1S) as below:
If the factory calibration data in EEPROM is lost, and then the VFD will display(about 1
S) as below:
3.2 Output Checkout
The following procedures check to ensure that the power supply develops its rated
outputs and properly responds to operation from the front panel.
3.2.1 Voltage Output Checkout
The following steps verify basic voltage functions without load.
1) Turn on the power supply.
2) Set the current value(≥0.01A).
3) Enable the outputs
Press
On/Off
key(
On/Off
key will be lit) to let the CV annunciator turn on to light.
4) turn on Meter mode
press the METER key to light the button, the Meter status Mark lights on the display
is turned on.
5) Set the voltage for the power supply
Set different voltage values, check the voltage value displayed on the VFD is close to
the voltage value you set, and to check if the VFD displayed current value is nearly
zero.
6) Ensure that the voltage can be adjusted from zero to the full rated value
3.2.2 Current Output checkout
1) Turn on the power supply
2) Press
On/Off
key to ensure that the output is disabled. At the same time, the OFF
status mark is on the VFD.
3) Connect a short across(+) and (-) output terminals with an insulated test lead, use a
wire sufficient to handle the maximum current.
4) Adjust the voltage value to 1V.
5) Turn on the power output.
Press
On/Off
key to ensure the output is enabled, at the same time there is CC
status sign on the VFD.
6) Turn on METER function key.
Press METER key to light it, and the METER status sign is on the VFD.
7) Adjust the current value
Set some different current values, check whether the voltage value on VFD is near 0v,
and the current on it is close to the value you set.
CAL LOST
FACT LOST

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8) Make sure that the current can be adjusted from 0 to full rated value.
9) Turn off the output of the power supply, and remove the short wire.
Chapter4 technical specification
This chapter will introduce the main technical parameters of IT6700H/IT6700G,such as
rated voltage/current/power and so on. Besides, we will introduce the working environment
and storage temperature.
4.1 Main technical parameters
Parameters IT6723C IT6724C
Rated values
( 0 °C~40 °C)
voltage 0 ~32V
current 0~110A
power 850W 1500W
Load regulation
(％of output+offset) voltage ≤0.01%+10mV
current ≤0.1%+20mA
Line regulation
(％of output+offset) voltage ≤0.01%+10mV
current ≤0.1%+20mA
Setup resolution voltage 10mV
current 10mA
Readback resolution voltage 10mV
current 10mA
Setup accuracy
（
one year）(25°C±5°C)
(％of output+offset)
voltage ≤0.01%+10mV
current ≤0.1%+20mA
Readback accuracy
（
one year）(25°C±5°C)
(％of output+offset)
voltage ≤0.01%+10mV
current ≤0.1%+20mA
Ripple
voltage ≤80mVp-p
current ≤150mA rms
Temp.coefficient
( 0 °C~40 °C) voltage ≤0.01%+10mV
current ≤0.1%+20mA
Working temperature 0 °C~40 °C
Dimension（mm）214.5mmW×88.2mmH×445mmD
Weight（net）6Kg

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Parameters IT6723 IT6724
Rated values
( 0 °C~40 °C)
voltage 0~80V
current 0~40A
power 850W 850W
Load regulation
(％of output+offset) voltage ≤0.01%+10mV
current ≤0.1%+20mA
Line regulation
(％of output+offset) voltage ≤0.01%+10mV
current ≤0.1%+20mA
Setup resolution voltage 10mV
current 10mA
Readback resolution voltage 10mV
current 10mA
Setup accuracy
（
one year）(25°C±5°C)
(％of output+offset)
voltage ≤0.01%+10mV
current ≤0.1%+20mA
Readback accuracy
（
one year）(25°C±5°C)
(％of output+offset)
voltage ≤0.01%+10mV
current ≤0.1%+20mA
Ripple
voltage ≤80mVp-p
current ≤50mArms
Temp.coefficient
( 0 °C~40 °C) voltage ≤0.01%+10mV
current ≤0.1%+20mA
Working temperature 0 °C~40 °C
Dimension（mm）214.5mmW×88.2mmH×445mmD
Weight（net）6Kg

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Parameters IT6723B IT6724B IT6726B
Rated values
( 0 °C~40 °C)
voltage 0~80V 160V
current 0~40A 40A
power 850W 3000W 3000W
Load regulation
(％of output+offset) voltage ≤0.01%+10mV ≤0.01%+60mV
current ≤0.1%+20mA ≤0.1%+20mA
Line regulation
(％of output+offset) voltage ≤0.01%+10mV ≤0.01%+60mV
current ≤0.1%+20mA ≤0.1%+20mA
Setup resolution voltage 10mV 100mV
current 10mA 10mA
Readback resolution voltage 10mV 100mV
current 10mA 10mA
Setup accuracy
（
one year）(25°C±5°C)
(％of output+offset)
voltage ≤0.01%+10mV ≤0.01%+60mV
current ≤0.1%+20mA ≤0.1%+20mA
Readback accuracy
（
one year）(25°C±5°C)
(％of output+offset)
voltage ≤0.01%+10mV ≤0.01%+60mV
current ≤0.1%+20mA ≤0.1%+20mA
Ripple
voltage ≤80mVp-p ≤200mVp-p
current ≤50mArms ≤50mA rms
Temp.coefficient
( 0 °C~40 °C) voltage ≤0.01%+10mV ≤0.01%+60mV
current ≤0.1%+20mA ≤0.1%+20mA
Working temperature 0 °C~40 °C 0~40°C
Dimension（mm）214.5mmW×88.2mmH×445mmD
439mmW×88.20m
mH
×462mmD
Weight（net）6Kg 13Kg

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Parameters IT6723H IT6724H
Rated values
( 0 °C~40 °C)
voltage 0 ~300V
current 0~10A
power 850W 1500W
Load regulation
(％of output+offset) voltage ≤0.01%+60mV
current ≤0.1%+20mA
Line regulation
(％of output+offset) voltage ≤0.01%+60mV
current ≤0.1%+20mA
Setup resolution voltage 100mV
current 10mA
Readback resolution voltage 100mV
current 10mA
Setup accuracy
（
one year）(25°C±5°C)
(％of output+offset)
voltage ≤0.01%+60mV
current ≤0.1%+20mA
Readback accuracy
（
one year）(25°C±5°C)
(％of output+offset)
voltage ≤0.01%+60mV
current ≤0.1%+20mA
Ripple
voltage ≤150mVp-p
current ≤30mA rms
Temp.coefficient
( 0 °C~40 °C) voltage ≤0.01%+60mV
current ≤0.1%+20mA
Working temperature 0 °C~40 °C
Dimension（mm）214.5mmW×88.2mmH×445mmD
Weight（net）6Kg