Manson Engineering Industrial NTP-6521 User manual

NTP-6521 / 6531 / 6561

SWITCHING MODE POWER SUPPLY with USB REMOTE CONTROL

USER MANUAL

Keep this manual in a safe place for quick reference at all times.

This manual contains important safety and operation instructions for correct use of the power

supply. Read through the manual and pay special attention to the markings and labels of this

unit and equipment to be connected.

Pay special attention to these two types of notices used in this manual

WARNING:

Failure to observe this warning may cause injury to persons and damage to power

supply or connected equipment.

CAUTION:

Failure to observe this warning may result in damage to equipment

and Improper functioning of the power supply.

WARNING:

1. Do not use this power supply near water.

2. Do not operate or touch this power supply with wet hands.

3. Do not open the casing of the power supply when it is connected to ac mains.

4. Refer all servicing to qualified service personnel only.

5. Before replacing the AC fuse at AC socket, find out and clear up the cause first.

6. Replace the AC fuse with the same type and rating as the original fuse.

7. The max. output voltage of Model NTP-6561 is 60VDC, avoid touch the metal contact part of the output

terminals.

CAUTION:

1. Use a grounded 3 pin AC source.

2. This unit is for indoor use only.

3. Do not operate or place this unit in a humid, dusty, in direct sunlight location or near any heat source.

4. Before plugging into local AC mains, check with the rating label at the back of the unit.

5. Do not block any ventilation openings of the unit.

6. This unit must be used within the specified rating, regular excessive continuous loading may cause damage to

the power supply.

7. The gauge size of input power cable must be at least 0.75mm2and the total length of power cable must not

exceed 3m.

Copy Right

without the written permission from Manson Engineering Industrial Ltd.

Changes in the manual. Manson Engineering Industrial Ltd. has the right to update and change the content of this

manual without any notice and obligation.

OPERATION ENVIRONMENTAL CONDITION

• 10-80% R.H.

• Maximum relative humidity 80% for temperature up to 31°C decreasing linearly to 50% relative humidity at

40°C.

• Altitude up to 2000m

• Installation category: CAT 2

• Pollution degree: 2

• Mains supply voltage fluctuation up to ±10% of the normal voltage

INTRODUCTION

This series of 100W Switching Mode Power Supplies with Current Limiting Control is designed with the objectives

of high accuracy, compactness and easy portability. Rotary encoder tuning with MCU are used for voltage and

current control. 4 digit display LCD of voltage and current for high precision.

This power supply is ideal for trouble shooting circuit boards or devices which require two or three different input

voltages such as 3V or 5V, 12V and 1-36V. This power supply can provide 3 outputs at the same time.

All three outputs are fully isolated so different cross connections of 2 or 3 outputs can provide various fixed or

variable output voltages. Any output can be connected for positive or negative polarity. (See connection diagrams)

CONTROLS AND INDICATORS

1. Power Switch:

- Turns the power supply on–off, when it is on the front display lights up.

2. AC Input Socket with Fuse

3. Concealed Fuse box (ply open the cover to get to the fuse)

4. 3.3V/5VDC selection switch (for Aux output 1)

5. Output Voltage Tuning knob. (Quick push the knob to toggle the coarse and fine tuning)

6. Output Current Tuning knob. (Quick push the knob to toggle the coarse and fine tuning)

7. Output On/Off push button

- For Main output: Quick push this button to turn the Main output ON/OFF

- For Main output & Aux outputs: Push and hold this button for 3 seconds to turn the Main and Aux outputs

OFF, quick push this button again to turn them ON

8. Main Output Terminal Positive (+) Red color.

9. Main Output Terminal Negative (-) Black color

10. Aux Output 1 Terminal Positive (+) Red color (3.3VDC or 5VDC selectable)

11. Aux Output 1 Terminal Negative (-) Black color (3.3VDC or 5VDC selectable)

12. Aux Output 2 Terminal Positive (+) Red color (Fixed 12VDC)

13. Aux Output 2 Terminal negative (-) Black color (Fixed 12VDC)

14. LCD Display panel showing:

- 4 digit voltmeter, Ammeter, (CV) constant voltage mode, (CC) constant current mode,

- Output Terminal on/off state

- 2 digit Aux outputs Ammeter

15. Aux 1 output voltage indicator

16. USB remote control

17. Ground Terminal

OPERATIONS

Basic Mode of Operation

This power supply is designed to operate as a constant voltage source or as a constant current source. Automatic

crossover to either mode of operation occurs when the load condition changes as following:

Constant Voltage (CV), Automatic crossover & Constant Current (CC)

The power supply functions as a constant voltage source (CV) as long as the load current is less than the preset

current limiting value. When the load current is equal to or greater than the preset current limiting value, the power

supply will automatically cross over to the constant current mode, voltage will drop, (CC) will show on the LCD

display panel and it will operate as a constant current source.

When the load current drops below the preset current limiting value, the supply returns to constant voltage (CV)

mode.

Set the Output Voltage and Presetting Current Limiting Value (CC)

Turning the voltage or current knob to set your desired values.

Quick pushes on the knobs will move the decimal place for fast tuning.

Turn the knob when the desired number column is flashing otherwise you need to repeat quick pushes again.

One quick push on the current knob to see the preset current limiting value.

Aux. output 1 voltage selection

Move the switch (4) at the back of power supply for selection of 3.3 or 5 VDC.

At 3.3VDC setting, indicator (15) is Off

and at 5VDC setting indicator (15) is On.

Connection and Operation Procedure

1. Check the rating label and plug in to AC mains.

2. Switch on the power supply and the LCD display should be on at the same time.

3. The (CV) icon should be shown on the display.

4. Turn to current volume knob (6) to maximum clockwise if you do not require lower Current limiting value,

otherwise do the preset the (CC) limiting procedure.

5. Set your desired output voltage and then turn off the output terminal by push button (7).

6. Connect to your load positive to positive and negative to negative.

7. Turn on the output terminal again and check if display shows (CV).

8. If display shows (CC), either your preset current limiting value is too low or your load requires more voltage and

current. You need to re-access the voltage and current requirement of your load and increase the voltage or

current accordingly until (CV) appears.

Connecting the 3 outputs (using NTP -6531, 1-36V, 0.25-3A as an example)

All the three outputs are fully isolated from ground and with each other so that it is possible to make cross

connections to power a circuit board or device that requires for example: +3 or +5V, +12 V or -12V and 1-36V as

shown in Fig.1.

The variable main output is set for 12V and it is assigned as the +12V source (available maximum current 3A)

Note the variable main output can be set for other voltage (1-36V) such as 16V.

The fixed 12V is made as the - 12V source (available maximum current 0.5A)

The fixed 5V is made as the +5V source. (available maximum current 0.5A)

DIAGRAM SHOWING CIRCUIT BOARD OR DEVICE

Connecting outputs in series (using NTP-6531 as an example)

You can have a 17V fixed output by connecting the 5V in series with the 12V outputs.

The 2 outputs (Aux.1) can be connected in series to make a variable 5V to 41V with maximum current 2A (Fig. 2)

The 3 outputs can be connected in series to make a variable 17V to 53V with maximum current 1A, (Fig. 3)

There are other combination of cross connections for different positive and negative output voltages.

Tracking Output Over Voltage Protection (OVP)

This is to protect the connected load in the event that the output voltage control circuit malfunctions, the maximum

output voltage will not exceed 30% of the adjusted voltage value at the time of the operation.

Over Temperature Protection

When the temperature inside the power supply becomes higher than a pre-determined value, the output voltage

and current of the power supply will automatically decrease to zero to prevent damage to power supply. When the

temperature inside the power supply returns to normal then the power supply will automatically return to operation

again.

PC CONNECTION

The NTP with USB can be remote control using Windows PC. Connecting the NTP to PC using provided USB

cable as following connection diagram.

It requests to install USB driver for NTP connection. Please download driver from Manson website

www.manson.com.hk

There are two methods for remote control of NTP. You can use Manson control software or use your own program

with command set provided in this manual.

The PC control software can be downloaded from Manson website www.manson.com.hk

For the detail usage of driver and PC software. Please refer to PC software manual.

PC software manual download link :

http://www.manson.com.hk/getimage3/index/action/images/name/PC_Software_manual_R3.pdf

SPECIFICATIONS

NTP - 6521 NTP-6531 NTP-6561

Input Voltage (Universal input) 100 - 240Vac, 50 / 60Hz~

Full Load Input Current at 230Vac 0.83A

Output Voltage Adjustable Range 1.0 - 20Vdc 1.0 – 36Vdc 1.0 - 60Vdc

Output Current Adjustable Range 0.25 - 5A 0.25 - 3A 0.25 - 1.6A

Voltage Regulation

Load from 10% to 90% Variation 70mV 70mV 70mV

Line from 90 to 264Vac Variation 25mV

Ripple & Noise (peak to peak) ≤120mV ≤150mV ≤180mV

Current Regulation

Load from 10% to 90% Variation 50mA

Line from 90 to 264Vac Variation 20mA

Ripple & Noise (peak to peak) ≤50mA

Switching Operation Frequency 50KHz to 150KHz

Aux output 1 Fixed 3.3 /5VDC. 1.8A cont. 2A Max.

Aux output 2 Fixed 12VDC, 800mA cont. 1A Max.

Power Factor >0.9

Efficiency at Maximum Power ≥80.5% ≥80.5% ≥80.5%

Volt and Amp Control Type Rotary Encoder

Voltmeter and Ammeter Display 4 Digit LCD

Voltmeter Accuracy 5 counts for range V<5V 5 counts for range V<5V 5 counts for range V<5V

±0.2% +5 counts for range V≥5V ±0.2% +5 counts for range V≥5V ±0.2% +5 counts for range V≥5V

Ammeter Accuracy 15 counts for range I≤1A 15 counts for range I≤1A 15 counts for range I≤1A

±0.5% +6 counts for range I>1A ±0.5% +6 counts for range I>1A ±0.5% +6 counts for range I>1A

LCD Indication CC, CV, Amp, Volt, Output ON-OFF, Aux output current

Protection Short Circuit, Overload, Over Temperature, Tracking OVP

CE Approvals LVD: EN 61010, EMC: EN 55011

Cooling System Natural Convection

Dimensions (WxHxD) 70 x 150 x 250mm / 2.8 x 6.0 x 9.8in.

Weight 2Kgs / 4.4Lbs

Remarks All the data are based on 230V 50Hz~

COMMAND SET

Command code & Return Value

Description

Example

Input Command: SOUT<Output>[CR]

Return Value: [OK][CR]

Set Output on/off

Set Output off: <Output>=0

Set Output on: <Output>=1

Input Command: SOUT0[CR]

Return Value: [OK][CR]

Meaning: Set Output off

Input Command: GOUT [CR]

Return Value: <Output> [CR][OK][CR]

Get Output Status

Output off: <Output>=0

Output on: <Output> =1

Input Command: GOUT[CR]

Return Value: 0[CR][OK][CR]

Meaning: Output is off

Input Command: SETD <VOLTAGE><CURRENT>[CR]

Return Value: [OK][CR]

SET Voltage and Current

<voltage> =0000~3640

<Current> =0000~5100

Input Command:

SETD05001000[CR]

Return Value: [OK][CR]

Meaning: Voltage 5.00V Current

1.000A

Input Command: GETD [CR]

Return Value: <Voltage><;><Current><;>

<CV/CC Mode><;>[CR][OK][CR]

Get display Volt & display Curr &

CV/CC mode

<voltage> =0~9999

<Current> =0~9999

<CV mode> =0 CV Mode

<CC mode> =0 CC Mode

Input Command: GETD [CR]

Return Value:

500;1000;0;[CR][OK][CR]

Meaning: The Display value is

5.00V and 1.000A

It is CV mode

Input Command: GETS [CR]

Return Value: <Voltage><;><Current><;>[CR][OK][CR]

Get Setting Volt & Curr

<voltage> =0~3640

<current> =0~5100

Input Command: GETS[CR]

Return Value:

500;1000;[CR][OK][CR]

Meaning: The Memory setting

voltage value is 5.00V and Current

is 1.000A

Input Command: VOLT<Voltage>[CR]

Return Value: [OK][CR]

Set output voltage

Input Command: VOLT 1000[CR]

Return Value: [OK][CR]

Meaning: Set voltage value is

10.00V

Input Command: CURR<Current>[CR]

Return Value: [OK][CR]

Set output current

Input Command: CURR1000[CR]

Return Value: [OK][CR]

Meaning: Set Current value is

1.000A

Input Command: GMOD [CR]

Return Value: <MODE>[CR][OK][CR]

Get MODE

<MODE>=NTP????

Input Command: GMOD[CR]

Return Value:

NTP5521[CR][OK][CR]

Meaning: Mode is NTP5521

Input Command: GVSH [CR]

Return Value: <Voltage>[CR][OK][CR]

Get voltage set high limit

<voltage>=????

Input Command: GVSH [CR]

Return Value: 3600 [CR][OK][CR]

Meaning: voltage set high limit is

36.00V

Input Command: GVSL [CR]

Return Value: <Voltage>[CR][OK][CR]

Get voltage set low limit

<voltage>=???

Input Command: GVSL [CR]

Return Value: 100 [CR][OK][CR]

Meaning: Voltage set low limit is

1.00V

Input Command: GISH [CR]

Return Value: <Current>[CR][OK][CR]

Get current set high limit

<Current>=????

Input Command: GISH [CR]

Return Value: 5500 [CR][OK][CR]

Meaning: Current set high limit is

5.500A

Input Command: GISL [CR]

Return Value: <Current>[CR][OK][CR]

Get current set low limit

<Current>=???

Input Command: GISL [CR]

Return Value: 250 [CR][OK][CR]

Meaning: Current set low limit is

0.250A

Input Command: GMAX [CR]

Return Value: <Voltage><;><Current><;>[CR][OK][CR]

Get voltage set high limit & current

set high limit

<voltage> =????

<current> =????

Input Command: GMAX [CR]

Return Value:

3600;5500;[CR][OK][CR]

Meaning: Voltage set high limit is

36.00V & Current set high limit is

5.500A

Input Command: GMIN [CR]

Return Value: <Voltage><;><Current><;>[CR][OK][CR]

Get voltage set low limit & current

set low limit

<voltage> =???

<current> =???

Input Command: GMIN [CR]

Return Value:

100;250;[CR][OK][CR]

Meaning: Voltage set low limit is

1.00V & Current set low limit is

0.250A

Rev.107/2018

7673-6521-0001

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