EVENTEK DPS Series DC Power Supply User Guide

EVENTEK DPS Series DC Power Supply

General Safety Overview

• Read the following preventive measures for safety in detail to prevent personal injuries, and prevent this product from being damaged or connected with any other product. To avoid possible dangers, use this product strictly according to stipulations. Only the qualified personnel can implement the maintenance process.
• Avoid fire and personal injuries.
• Use appropriate power cords. Only use the dedicated and country/ regional certificated power cords.
• Use correct voltage settings. Before powering on, ensure that the line selector is located at the position corresponding to the currently used power.
• Ground the product. Ground this product through the grounding lead of the power cord. To avoid the electric shock, ground the grounding lead to the earth. Before the connection with the input end or output end of this product, correctly ground this product.
• Comply with all rated values of terminals. To avoid fire or electric shock, comply with all rated values and marks on the product. Before the connection of this product, consult the product manual to grasp the detailed information on relevant rated values.
• De-energize. The power switch can de-energize this product. Consult the description of the relevant position. Do not cover up the power switch, and such power switch must be available for users at any time.
• Do not implement uncovered operations. Do not operate this product when the external cover or face plate is open.
• Do not operate when the product is suspected of failure. If this product is suspected of being damaged, ask qualified maintenance personnel to inspect it.
• Keep away from exposed circuits. After power on, do not contact exposed lines and elements.
• Use an appropriate fuse. Only utilize the type of fuse specified for this product and the rated indicators.
  • Do not operate in a humid environment.
  • Do not operate in a flammable and explosive environment.
  • Keep the product surface clean and dry.
• Warning: “Warning” statement indicates that the circumstance or operation may result in personal.& injuries or endangered life safety.
• Caution: The “Caution” statement indicates that the circumstance or operation may damage this product or other assets.

Symbols and terms on the product

The following terms may be used on the product:

• “Danger” means that the harm may happen immediately when you read this mark.
• “Warning” means that the harm will not immediately happen when you read this mark.
• Caution” means that this product or other assets may be endangered.

Main functions

• Constant voltage and constant current automatic switching function. Constant voltage value and constant current value can be preset with a coding switch, which is convenient to use.
• There is a separate power output switch button, through which the power output can be turned on or off conveniently. when the output is stopped, the screen displays the set voltage value and set current value, which is convenient for setting.
• Short-circuit protection alarm function (OCP). When this function is enabled, the power supply will stop outputting when the load equipment is short-circuited, and there will be a buzzer sound and OCP characters to indicate. After the external short circuit is released, press the output button to release the alarm or restore the output. Ill can effectively protect the load equipment.
• The setting voltage, setting current, actual voltage, and actual current are all displayed in four digits.
• The use of low-noise, temperature-controlled cooling fans to ensure that the power supply works within the appropriate temperature.
• This power supply has an overheating protection function. When the internal temperature of the power supply reaches 75 degrees or more, the power supply will be forbidden to output to avoid damage to the machine due to overheating.
• The constant voltage and constant current values are automatically memorized when the machine is turned off(or power down), and the set value at the last shutdown (or power down) will be used when the machine is turned on again.

Basic knowledge

• Standard accessories and purchase menu
• Table 1: Standard accessories
  • Power supply host x1
  • Instructions x1
  • Input power cord x1
  • Output power cord x2

Product parameters

Appearance description

1. Voltage regulation encoder
2. Current regulated encoder
3. Output switch
4. Voltage display
5. Current display
6. Power display
7. Constant pressure status indicator
8. Constant current status indicator
9. Positive output terminal+
10. Negative output terminal-
11. Ground terminal
12. USB fast charge interface
13. OCP short circuit protection switch
14. M1-M3 storage button
15. Power supply switch
16. Cooling fan
17. AC input power socket
18. Fuse box

Operation requirements

1. Put the equipment on the workbench or a similar surface.
2. Before operation, ensure that the ambient temperature is between +0-C ~ +40-C (+32° F ~ +104° F).

Warning: To ensure normal heat dissipation, do not pile up materials in front of, on the side of, and behind the equipment. A ventilation space of at least 3cm shall be reserved respectively on the side of and behind the equipment, to ensure the air ventilation of the equipment.

Warning: Before the use of this product and any other relevant equipment, ensure that all preventive measures for safety listed in this manual shall be observed. Although some equipment and accessories can only be used under non- dangerous voltage, hazardous conditions may also happen. This product can only be used by qualified personnel who can identify the electric shock danger and is familiar with necessary preventive measures for safety, to prevent possible injuries. Before the use of this product, carefully read and comply with all installation, operation and maintenance information. For the relevant and complete technical specifications of the product, refer to this manual. Before maintenance, de-energize the power cord and all testing cables. The operator of this equipment must apply the electric shock protective measure at any time. The responsible mechanism must ensure that the operator cannot contact any connection point, and/ or is insulated from every connection point. Under some cases, the connection point must be exposed, which may result in physical contact. In this case, the product operator must be trained and understand how to protect himself from the electric shock risk. If the circuit can work under 72V or above, any live part in this circuit cannot be exposed.

• Warning: Use the wire with a suitable rated load. The capacity of all load wires must be able to bear the maximum short-circuit output current of the power supply without overheating. In case of several loads, every pair of load wires must be capable of safely bearing the full-load rated short-circuit output current of the power supply.
• Warning: Do not loosen any screw on this product. No internal maintainable components for users.
• Warning: To reduce the fire and electric shock risks, utilize within the scopes of various rated values of power.

Method of operation

Power on
Press the POWER button to turn on the power, and the screen will display the voltage and current values that were set when the machine was turned off last time.

Voltage setting

Regardless of whether the power supply is in the output state, you can turn the “VOLTAGE” coding switch to set the voltage. When it enters the voltage setting state, The current set “bit” is prompted by flashing turn clockwise to increase the value, and turning counterclockwise to decrease the value. Press the coding switch to shift to the left. 5 seconds after the voltage setting operation is completed, the flashing stops, and the current setting value is stored.

Current setting
Regardless of whether the power supply is in the output state, you can turn the “CURRENT” coding switch to set the current. When entering the current setting state, the currently set “bit” will flash in a flashing way turn clockwise to increase the value, and turn counterclockwise to decrease the value. Press the coding switch to shift to the left. 5 seconds after the current setting operation is completed, the flashing stops, and the current setting value is stored.

Output switch
Short press the “Output” button on the panel, and you can switch the power output and turn it off.

OCP short circuit protection
Press the “OCP” button to turn on (or turn off the OCP short-circuit protection alarm function. After the OCP protection alarm function is turned on, when the machine detects a short circuit or overcurrent in the external load, the machine will stop output and give an alarm to effectively protect the external load. In the OCP short-circuit alarm state, short-press the Output key to release the alarm state and enter the closed output state.

• In the actual CV operation, if the load resistance decreases and the output current increases to the set current value, the power supply will automatically switch to CC mode. When the load resistance continues to decrease, the current will remain at the current setting Value, the voltage drops proportionally (l=V /R). At this time, increase the load resistance or increase the current setting value to restore the cV output state.
• The machine judges whether there is a short circuit in the output, based on whether the A output current is greater than the current set by the user. Therefore, when the OCP short-circuit protection function is enabled, the machine cannot be used in constant current mode.

Connect load equipment

1. Rotate counterclockwise to loosen the terminal knob
2. Put the output wire terminals into the terminal screw according to the positive and negative poles
3. Turn clockwise to tighten the terminal knob
4. Firmly connect the other end of the wire with the positive and negative poles of the load device

Incorrect connection may cause damage to the power supply A and the load connected to the power supply. When connecting a battery load, do not connect the”+” and”-” poles reversely, as this may damage the power supply

System settings

Press and hold the Output button for 5 seconds to enter the system setting function. According to the needs of use, the machine can be set by default. The system default setting items include:

1. The ID of the machine.
2. The power supply output status.
3. Screen brightness.
4. Buzzer switch.
5. Serial communication baud rate.
6. Set the size of the serial port data.

After entering the system settings, turn the voltage encoding switch to change the default parameters of the current project; press the voltage encoding switch to switch to the next item , if you have switched to the last item(item 6), click the voltage encoding switch again, the machine will Save the parameters and exit the setting state. If any other key is pressed during the parameter setting process, the setting state will be exited and the parameter setting will not be saved.

The specific setting items and parameter meanings are shown in the following table:

When the power is turned on, the OUT outputis turned off by default

|

0

2

| Screen brightness| 0| Low brightness|

0

| High brightness

3

|

Buzzer mute

| 0| No beeps|
| With beeps

4

|

Communication baud rate

| | 2400|
2| 4800
3| 9600
4| 19200

5

| Communication size endian setting| 0| Small end structure|

0

| Big-endian structure

Fuse replacement

If the fuse blows, the machine will stop working. It is necessary to find out and correct the cause of the blown fuse, and then replace it with a fuse of the same specification.

Fuse replacement method

Warning:
For effective safety protection, it is only limited to replacing the fuse of a specific specification. Before replacing the fuse,you must turn off the power and unplug the power cord from the power socket.

Common problem

Power does not turn on
Check whether the power cord has AC power and whether the fuse is intact.

No power output
Check whether the output button is turned on and whether the wire is in good conduction. Whether the voltage or current adjusts the output.

What is constant voltage mode (C.V)
The power supply is constantly output according to the voltage set by the user, and the current will be output and supplied according to the actual needs of the load.

What is constant current mode (C.C)
When the current required by the load exceeds the limit current value set by the user, the power supply will automatically switch to constant current mode. At this time, the current remains unchanged, and the voltage will be output and supplied according to the needs
of the load.

The power supply cannot be output according to the current set by the user current limit value set by the user
The current value set by the user refers to the maximum limit current value that the power supply is allowed to output, and the actual output current value is supplied according to the actual needs of the load, but will not exceed the.

• E-mail:[email protected]
• CET PRODUCT SERVICE LTD. Osterholzallee 144, 71636 Ludwigsburg, Germany [email protected] +49 71416432251

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