eTOMMENS programmable power supply Series User manual

DC power supply
programmable power supply series product manual

Table of Contents
Safety summary....................................................................1
Chapter I Overview..............................................................3
Chapter II Operating specifications……………………..11
Chapter III Maintenance...................................................15
Chapter IV Performance indicators.................................17
Chapter V Declaration of toxic and hazardous substances
in the product.....................................................................19
Chapter VI Warranty service...........................................20
Warranty card ...................................................................22
Performance indicators are subject to change without prior notice.

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Safety summary
This chapter contains important safety
instructions that must be followed by operating
power and storage environments. In order to
ensure your safety, please read the following
instructions before operation，to ensure that the
power supply in the best working environment.
Safety guide
General
introduction
Do not place heavy objects on the chassis.
Avoid serious impact or improper
disposal, resulting in machine damage.
The measures to prevent electrostatic
discharge should be taken when
connecting instruments.
Do not block or isolate fan vents.
Do not open the machine unless it is a
professional person.

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Power
supply
AC input voltage: 220V + 10%, 50Hz
(110V input or 100V/220V manual
switching)
The grounding wire of power line should
be connected to the grounding terminal to
avoid electric shock.
Fuse
Ensure the correct fuse type before
starting.
To prevent fire, replace the fuse which
conforms to the model and rating.
Cut off the power supply before replacing
the fuse, and exclude the cause of the fuse
damage.
Cleaning
machine
Cut off the power before cleaning.
Wet the soft cloth with the mild
detergent and water. Do not spraythe
detergent directly.
Do not use chemicals or detergents
containing abrasive products, such as

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Chapter I Overview
This series is a single output DC regulated
power supply with LED digital display. It may
display voltage, current and power
simultaneously. It is portable and small and the
voltage and current may be adjusted
continuously.
benzene, toluene, xylene and acetone.
Operating
environment
Using place ：indoor, prevent direct
sunlight, dust and strong magnetic field.
Relative humidity: <80%
Altitude: <2000m
Temperature: 5℃ to 40℃
Storage
environment
Position: indoor
Relative humidity: <60%
Temperature ：5℃ t o 30 ℃

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1.1 Functional features
LED digital display may virtually
display the power output voltage,
current and power, and decimal point
automatically carry.
Automatic switching of steady voltage
and steady current.
ON / OFF unique judgment switch
Five powerful protection functions:
over voltage, over current, over power,
over temperature, short circuit
six sets of shortcut parameter storage
function
List programmable sequence with
hardware output.
Four integral whole: Normal power
supply, CNC power supply.
Temperature control fan speed makes
the instrument with noise low and fan

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life longer.
Under output shutdown state, the
voltage value and current value can be
set in advance, so that the operation is
convenient.
A key lock keyboard, to prevent
misoperation.

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1.2 Front and rear panel
Front panel diagram

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1. Voltage display: The current output voltage is
displayed when the power output is turned on,
unit: volts (V), and the voltage preset value is
displayed when the output is turned off.
2. Current display：The current output current
value is displayed when the power output is
turned on, unit: Ampere (A), and the current
preset value is displayed when the output is
turned off.
3. Power / time / status display: The current
output power value is displayed when the power
output is turned on, unit: Watt (W); The time
value is displayed when entering the shortcut
parameter storage weaving time function, and
the decimal point is fixed on the right side, unit:
seconds (S); “OFF”is displayed when the power
output is turned off; When the power supply
enters the protection state, the status value is
displayed as follows:

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State
Display content
Over voltage
protection
“OVP”
Over current
protection
“OCP”
Over power
protection
“OPP”
Over temperature
protection
“OTP”
4. ON/OFF shutdown switch: It can directly
control the output on-off state of power supply.
Green means that the output state is open (ON);
red indicates the current output state is OFF.
5. Power switch: It is used to turn on or turn off
the power. The status is on after pressing the
switch.
6. Output positive electrode: Power output
positive (+) electrode;

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7. Grounding terminal: The safety ground
terminal is connected with power supply shell;
8. Output negative electrode:power output
negative (-) electrode;
9."B Lock" return / keyboard lock: under
normal mode, short press to return to the main
power interface; Long press 2S to lock keyboard,
the operation of all function buttons of panel
(excluding ON/OFF key) is invalid, at this time
"B Lock" lamp is always bright.
10. "List" mode key: Long press 2S to enter or
exit hardware List function mode，and "List"
button light is always light under hardware List
function mode; After entering the List function
mode, the output turns off. When List function
mode is in turn off output state, short press the
shortcut key in the six sets of of "M1" to "M6"
can select or delete the group shortcut parameter
whether to execute loop output or not

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. The corresponding button backlight of selected
key parameters that need to be executed is
always bright. The order in which the List output
executes the shortcut parameter is the selected
shortcut parameter from "M1" to "M6". Press the
"ON/OFF" button to start the List function
output.
11. "I CC" current setting key: In normal
mode, short press to entry edit mode of setting
value of power supply current, and the current
data setting bit flashes. "I CC" light indicates
that the current output of the power supply is in
steady state;
12. "OCP" over-current setting key:
In normal mode, short press to entry edit mode
of power over-current function. The data setting
bit of current over-current value flicker display;
in the over-current function edit mode, short

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pressing this button again can switch over
current function open state ON/OFF.
13. "U CV" voltage setting key: In normal
mode, short press to entry edit mode of setting
value of power voltage, and the current data set
bit flicker display. "U CV" light indicates that
the current output of the power supply is in the
state of steady voltage;
14. "OVP" over-voltage setting key: In normal
mode, short press to entry edit mode of power
overvoltage function, and the current
over-pressure data set bit flicker display; in the
edit mode of overvoltage function, short press
this button again, can switch over voltage
function open state ON/OFF.
15. ”→” Cursor right arrow key：In date
editing mode, short press this button to make the
flashing set bit move one bit to the right (if the

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flashing set bit is already the lowest bit, it
doesn’t move).
16. ”→” Cursor left arrow key：
In date editing mode, short press this button to
make the flashing set bit move one bit to the
left(if the flashing set bit is already the highest
bit, it doesn’t move).
17. Rotating shuttle button: In normal mode,
rotating shuttle in any direction or press the
bu tton to enter into edit mode of voltage data; in
editing mode of any date, the current date editing
sit flicker display. After no editing operation 5S,
the system automatically exits the edit mode and
saves the final setting value, or through the "B
Lock" button to save and exit the setting value
directly.
In the data editing mode of any setting
value, turn the shuttle clockwise, the value of
flicker bit plus "1"". If it over 10 after adding 1,

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then carries to the high bit of the sitting value.
When the setting value exceeds the maximum
rated value, the setting value is the maximum
ratings.
In the data editing mode of any setting
value, rotate the shuttle counter-clockwise, the
value of flicker bit minus "1"". If it less than
zero after minus 1, then borrow bit from the high
bit of the setting value. When the setting value is
less than 0, the setting date is 0.
In the editing mode of shortcut parameters,
press the jog key to cycle switch and edit the
voltage value or current value or time value in
the shortcut parameter; In the editing mode of
other setting value, press the jog key, and the
setting site of the date editing flash moves one
bit to the left. When the blinking setting site is
the highest bit of the current setting value, press
this button to shift the flicker to the Lowest bit

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of the current setting value, that is to say, the
cycle moves.
18. "M1" ~ "M6" six sets of shortcut
parameter storage key: In normal mode, short
press to enter the preview / edit mode of the
shortcut parameters. At this point, press the "B
Lock" button to exit directly and save the
settings value or after 5S no editing operation,
the system timeout and quit this mode and save
the setting value; Continuous short press two
times, the voltage setting value and current
setting value of the shortcut parameter key are
set to the current output voltage and current
parameter value needed by the power supply.

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Rear panel diagram
19.Cooling fan vents:It is used for air cooling
and heat dissipation of power supply. The fan
speed can be intelligently adjusted according to
the current output power consumption status,

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which can effectively reduce the fan noise and
prolong the service life of the fan.
20. Input power switch:AC110V/220V input
switch (default without this switch).
21. Fuse holder：It is equipped with power fuse
inside and can be prized up and replaced by a
screwdriver.
22. Power input socket: AC input port.
23. RS232 serial port seat: This interface can
be used to communicate with the control CPU of
the power supply (default without the
communication interface);
1.3 First use
1.3.1 Connect the power supply
(1) Input power requirements
Please refer to the fourth chapter
performance index for details on the input power
supply.
(2) Check the fuse

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When the instrument is out of the factory, a
suitable fuse has been installed. Make sure the
correct fuse type is used before starting.
(3) Connect the instrument power cord
Please use the power line provided by the
attachment to connect the instrument to the AC
power supply.
In orderto avoid electric shock, please
confirm that the instrument has been
properly grounded.
1.3.2 Battery check
Press the front panel power switch to turn
on electricity. The backlight of the "ON/OFF"
key displays red, and the power output is turned
off. The backlight of the "ON/OFF" key displays
green, and the power has turned on.
Note: if you restart after shutdown, please ensure

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the two boot time interval is greater than 5S.
1.3.3 Output check
The output check ensures that the
instrument can correctly respond to the front
panel operation and output the rated value. The
output check includes the voltage output of the
channel without load and the current output
during short circuit.
(1) Output switch
To turn on the power output, press the
"ON/OFF" key, the back light turns green; press
the key again will turn off the output, and the
back lights turn red.
(2) voltage output check
a . When the instrument is idle, turn on the
power button and confirm the current
setting steady current value is greater than
0V;
b. Press the "ON/OFF" button to open the