multicomp pro MP710079 User manual

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User Manual
Switching Mode Power Supply with
USB Remote Control
Part Number: MP710079; MP710080; MP710081;
MP710079 US; MP710080 US; MP710081 US
MP710079
MP710079 US
MP710080
MP710080 US
MP710081
MP710081 US

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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 di󰀨erent 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 di󰀨erent cross connections of 2 or 3 outputs can provide various xed or variable output
voltages. Any output can be connected for positive or negative polarity.
Features
• Remote Programmable via USB
• 4 Digit Display with 10mV & 10mA resolution
• 3 isolated outputs with 1 x variable, 2 x isolated xed
Controls and Indicators
1. Power Switch:
- Turns the power supply on–o󰀨, 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 ne tuning)
6. Output Current Tuning knob. (Quick push the knob to toggle the coarse and ne tuning)

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7. Output On/O󰀨 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 colour.
9. Main Output Terminal Negative (-) Black co8lour
10. Aux Output 1 Terminal Positive (+) Red colour (3.3V DC or 5V DC selectable)
11. Aux Output 1 Terminal Negative (-) Black colour (3.3V DC or 5V DC selectable)
12. Aux Output 2 Terminal Positive (+) Red colour (Fixed 12V DC)
13. Aux Output 2 Terminal negative (-) Black colour (Fixed 12V DC)
14. LCD Display panel showing:
- 4 digit voltmeter, Ammeter, (CV) constant voltage mode, (CC) constant current mode,
- Output Terminal on/o󰀨 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 limit-
ing value. When the load current is equal to or greater than the preset current limiting value, the power supply will automati-
cally 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 ashing 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 O󰀨
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 o󰀨 the output terminal by push button (7).
6. Connect to your load positive to positive and negative to negative.

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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 xed 12V is made as the - 12V source (available maximum current 0.5A)
The xed 5V is made as the +5V source. (available maximum current 0.5A)
Connecting outputs in series (using NTP-6531 as an example)
You can have a 17V xed 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 di󰀨erent positive and negative output voltages.

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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 volt-
age 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 fol-
lowing connection diagram.
For the detail usage of driver and PC software.
Specications
Part Number MP710079
MP710079 US
MP710080
MP710080 US
MP710081
MP710081 US
Output Voltage Range 1V DC to 20V DC 1V DC to 36V DC 1V DC to 60V DC
Output Current Range 0.25A to 5A 0.25A to 3A 0.25A to 1.6A
Voltage Regulation
Load from 10% to 90% Variation 70mV 70mV 70mV
Line from 90 to 264V AC Variation 25mV
Ripple & Noise (peak to peak) ≤120mV ≤150mV ≤180mV

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Part Number MP710079
MP710079 US
MP710080
MP710080 US
MP710081
MP710081 US
Current Regulation
Load from 10% to 90% Variation 50mA
Line from 90 to 264V AC Variation 20mA
Ripple & Noise (peak to peak) ≤50mA
Switching Operation Frequency 50kHz to 150kHz
Aux output 1 Fixed 3.3 /5V DC. 1.8A cont. 2A Max.
Aux output 2 Fixed 12V DC, 800mA cont. 1A Max.
Power Factor >0.9
E󰀩ciency at Maximum Power ≥80.5%
Volt and Amp Control Type Rotary Encoder
Voltmeter and Ammeter Display 4 Digit LCD
Voltmeter Accuracy 5 counts for range V<5V
±0.2% +5 counts for range V≥5V
Ammeter Accuracy 15 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 (W×H×D) 70mm × 150mm × 250mm / 2.8″ × 6″ × 9.8″
Input Voltage (Universal input) 100V AC to 240V AC, 50Hz / 60Hz
Full Load Input Current at 230V AC 0.83A
Weight 2 kgs
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 specied rating, regular excessive continuous loading may cause damage to the power
supply.
7. The gauge size of input power cable must be at least 0.75mm2 and the total length of power cable must not exceed 3m.

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Command Set
Command code & Return Value Description Example
Input Command: SOUT<Output>[CR]
Return Value: [OK][CR]
Set Output on/o󰀨
Set Output o󰀨: <Output>=0
Set Output on: <Output>=1
Input Command: SOUT0[CR]
Return Value: [OK][CR]
Meaning: Set Output o󰀨
Input Command: GOUT [CR]
Return Value: <Output> [CR][OK][CR]
Get Output Status
Output o󰀨: <Output>=0
Output on: <Output> =1
Input Command: GOUT[CR]
Return Value: 0[CR][OK][CR]
Meaning: Output is o󰀨
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
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 uctuation up to ±10% of the normal voltage

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Important Notice : This data sheet and its contents (the “Information”) belong to the members of the AVNET group of companies (the “Group”) or are licensed to it. No licence is granted for
the use of it other than for information purposes in connection with the products to which it relates. No licence of any intellectual property rights is granted. The Information is subject to change
without notice and replaces all data sheets previously supplied. The Information supplied is believed to be accurate but the Group assumes no responsibility for its accuracy or completeness,
any error in or omission from it or for any use made of it. Users of this data sheet should check for themselves the Information and the suitability of the products for their purpose and not make
any assumptions based on information included or omitted. Liability for loss or damage resulting from any reliance on the Information or use of it (including liability resulting from negligence or
where the Group was aware of the possibility of such loss or damage arising) is excluded. This will not operate to limit or restrict the Group’s liability for death or personal injury resulting from its
negligence. Multicomp Pro is the registered trademark of Premier Farnell Limited 2019.
Command code & Return Value Description Example
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 & cur-
rent 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