MEAN WELL NPB-750 Series 750W High Reliable Ultra Wide Output Range Intelligent Battery Charger Owner’s Manual

MEAN WELL NPB-750 Series 750W High Reliable Ultra Wide Output Range

Intelligent Battery Charger

Product Usage Instructions

• Ensure the charger is disconnected from the power source before proceeding.
• Connect the AC input side to a suitable power source and the DC output side to the battery.
• Use SBP-001, the smart battery charging programmer, to program Vboost or Vfloat within the specified range.
• Turn on the charger and monitor the charging process until the battery reaches full capacity.

FAQ

• Q: What should I do if the charger encounters a short circuit?
• A: The protection mechanism is designed to handle short circuits that occur after the charger is turned on. Refer to the manual for further details.
• Q: Is there a recommended battery capacity for optimal performance?
• A: Yes, MEAN WELL suggests specific battery capacity ranges for each model. Please consult your battery manufacturer for their recommendations.

AC input side

DC output side

Features

• Auto ranging with ultra-wide charging voltage (10.5~21V, 21~42V, 42~80V; Please refer to page 8 for setting)
• Built-in CANBus protocol for control, setting, and monitoring
• Programmable charging curve via SBP-001
• Manual setting for 2/3 stage and 4 built-in charging curves via DIP S. W
• Multiple protections:
• Short circuit / Over voltage / Over temperature/ Battery under voltage /Battery reverse polarity (No damage)
• The charger is OK and the Battery Full signal
• Temperature compensation function to prolong battery life (Lead-acid only)
• -30°C ~+70°C wide operating temperature
• Thermal-controlled DC fan for noise reduction
• Remote ON/OFF control
• Smart programmer available (Order NO.: SBP-001, sold separately)
• Carry handle accessory available(Order NO.: Carry handle, sold separately)
• Comply with 62368-1 + 60335-1/-2-29 dual certification
• Suitable for lead-acid (Pb) and li-ion batteries
• 3 years warranty

Applications

• AGV
• E-Bike, E-Scooter, Camping cars, Buses, Specialty vehicles
• Robotic lawn mower
• Washing robot
• Recreation craft, Personal yacht, or workboat
• Surveillance system
• Telecommunication base station
• Radio system backup solution
• Equipments or instruments with backup battery

GTIN CODE
MW Search: https://www.meanwell.com/serviceGTIN.aspx

Description

NPB-750 is a miniaturized, versatile, and ultra-wide voltage intelligent charger. It utilizes a fully digital control design with automatic battery voltage detection technology, with five key features intelligent, versatile, user-friendly, safe, and compact. The series has four models with output voltage ranges of 10.5~21V, 21~42V, and 42~80V respectively. The charging voltage range of each model is wide enough to cover a variety of different battery voltages and battery chemistries, and there is a built-in intelligent voltage detection charging mode (Note this mode is set to OFF by factory default and is suitable for lithium batteries with BMS only). The NPB-750 can pair with MEAN WELL’s SBP-001 programmer for digital configuration, such as adjusting charging voltage/current, and set charging cycle time to protect battery lifetime. Through the user-friendly DIP S.W. on the front panel, the user may also directly adjust the 2/3 stage charging, current (50~100%), and select between the 4 types of preset charging curves. In addition, a CANBus communication protocol is built in to meet professional applications, which allows remote controlling and monitoring for the status of the charger. In terms of safety, it has intelligent detection for proper battery voltage and connection as well as protection from reverse polarity. It passes ITE IEC/EN/UL62368-1 and household appliances EN60335-1/-2-29 dual safety and a 3-year warranty to guarantee reliable operation. The NPB-750 is truly an intelligent, safe, and reliable universal charger with outstanding cost performance.

Model Encoding

SPECIFICATION

NOTE

1. Modification for charger specification may be required for different battery specifications. Please contact the battery vendor and MEAN WELL for details.
2. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25 C of ambient temperature.
3. This is the range when programming boosts or floats by using SBP-001, the smart battery charging programmer.
4. Refer to the derating curve.
5. This is MEAN WELL’s suggested range. Please consult your battery manufacturer for their suggestions about the maximum charging current limitation.
6. Derating may be needed under low input voltages. Please check the derating curve for more details.
7. The efficiency is measured at 16.8V charge voltage(12V model), 33.6V charge voltage(24V model), and 67.2V charge voltage(48V model).
8. This protection mechanism is specified for the case the short circuit occurs after the charger is turned on.
9. Each model incorporates an MCU-controlled dynamic over-voltage protection, which is about 125% of Vboost over the Constant Current stage and Constant Voltage stage whereas 125% of Viloat over the Float stage.
10. The charger is considered a component that will be installed into the final equipment. All the radiation tests require an additional 132630 NIZN magnetic clasp or magnetic ring to the output line for CLASS B and without a NIZN magnetic clasp or magnetic ring for CLASS A. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf)
11. The ambient temperature derating of 3.5°C/1000m with fanless models and of 5°C/1000m with fan models for operating altitudes higher than 2000m(6500ft)

Product ability Disclaimer • For detailed information. please refer to https://www.meanwell.com/serviceDisclaimer.asnx

Block Diagram

Derating Curve

Static Characteristics

Derating Curve

The rated current should change with the output voltage programming accordingly.

Function Manual

Manual setting

2 or 3-stage selectable via DIP S.W on panel

charging curve
2| Charging curve adjustable| 4 built-in charging curves adjustable via DIP S.W
3

The charging curve can be adjustable via DIP S.W on the panel

• 2-stage charging curve

• Default 3-stage charging curve

• Suitable for lead-acid batteries (flooded, Gel, and AGM) and Li-ion batteries (lithium iron and lithium manganese).
• Suitable for lead-acid batteries (flooded, Gel, and AGM) and Li-ion batteries (lithium iron and lithium manganese).

The default curve is programmable, whereas other pre-defined curves can be activated using the DIP S.W.; This series provides 2 or 3-stage charging curve please refer to the table below and the Mechanical Specification.

Embedded 2-stage charging curve

43A

| 14.4
ON| OFF| Pre-defined, gel battery| 14.0
OFF| ON| Pre-defined, flooded battery| 14.2
ON| ON| Pre-defined, AGM battery, LiFe04| 14.6
DIP SW position| 24V model
2| 3| Description| CC(default)| Vboost
OFF| OFF| Default, programmable|

22.5A

| 28.8
ON| OFF| Pre-defined, gel battery| 28.0
OFF| ON| Pre-defined, flooded battery| 28.4
ON| ON| Pre-defined, AGM battery, LiFe04| 29.2
DIP SW position| 48V model
2| 3| Description| CC(default)| Vboost
OFF| OFF| Default, programmable|

11.3A

| 57.6
ON| OFF| Pre-defined, gel battery| 56.0
OFF| ON| Pre-defined, flooded battery| 56.8
ON| ON| Pre-defined, AGM battery, LiFe04| 58.4

Embedded 3-stage charging curve

43A

| 14.4| 13.8
ON| OFF| Pre-defined, gel battery| 14.0| 13.6
OFF| ON| Pre-defined, flooded battery| 14.2| 13.4
ON| ON| Pre-defined, AGM battery, LiFe04| 14.6| 14.0
DIP SW position| 24V model
2| 3| Description| CC(default)| Vboost| Vfloat
OFF| OFF| Default, programmable|

22.5A

| 28.8| 27.6
ON| OFF| Pre-defined, gel battery| 28.0| 27.2
OFF| ON| Pre-defined, flooded battery| 28.4| 26.8
ON| ON| Pre-defined, AGM battery, LiFe04| 29.2| 28.0
DIP SW position| 48V model
2| 3| Description| CC(default)| Vboost| Vfloat
OFF| OFF| Default, programmable|

11.3A

| 57.6| 55.2
ON| OFF| Pre-defined, gel battery| 56.0| 54.4
OFF| ON| Pre-defined, flooded battery| 56.8| 53.6
ON| ON| Pre-defined, AGM battery, LiFe04| 58.4| 56.0

Programmable charging curve

The Charging Curve can be set via SBP-001 with a computer

Step 1

• Hardware configuration

1

|

DIP S.W positions 2 and 3 need to switch to the “OFF” position

|

2

|

The pin7 and pin8(Jumper) of 14pins connector need to removed when using SBP-001

|

3

|

The communication cable of SBP#1 connected between NPB-750 of personal computer

|

Step 2
Connect to software for setting

NPB-750 pin assignment:

GND-AUX

| CANH| CANCEL| NTC (RTH+)| NTC (RTH-)

SBP-001 pin assignment

SBP-001

10 pins connector

(Connector Part No.: HRS DF11-10DS)

| 1| 2| 3| 4| 5| 6| 7| 8| 9| 10
UART_RX| UART_TX| PMBUS_D| PMBUS_C| CANH| CANCEL| 5V| GND| 3.3V| GND

Function Description

SBP-001 is a programmer, particularly for MEAN WELL’s various programmable battery charger models to program the parameters of charging curves, such as Constant current (CC), tapper current(TC), Constant voltage (CV), float voltage (FV), Charging time out and so on, to accommodate the diversified battery specification in industry. With the design accounting for simplicity and convenience, users can easily configure MEAN WELL’s programmable battery chargers with the SBP-001 programmer and the computer; all of the setups can be finished easily through the specific software.
Note:(1) Tapper current(TC) default is 10%, which can be fine-tuned from 2% to 30% by SBP-001 with the computer or CANBus Interface.
(2) Please contact MEAN WELL for more details.

Software Interface

Auto Ranging for Charging (Default non-auto ranging)

Function Description

• NPB-750 has a built-in auto-ranging mode.
  (Note this mode is set to OFF by factory default and is suitable for lithium batteries with BMS only)

• When operating in auto-ranging mode, NPB-750 will automatically detect the voltage of the battery that is connected and adjust the charging voltage accordingly. It will not start charging unit the appropriate battery voltage is detected.

• While under the auto-ranging mode, NPB-750’s built-in MCU will adjust the charging voltage. There is no potentiometer for voltage adjustment on the front panel.

• While under the auto-ranging mode, the charging current can be adjusted between 50~100%.
  (The charging current can not be adjusted via potentiometer while not operating in auto-ranging mode)

When using the auto-ranging charging curve function, please pay attention to the following

1. The default factory setting is OFF via DC output side DIP S.W., Follow steps A1~A6 below to enable the setting.
2. The auto-ranging function should be used together with Lithium batteries and BMS (Battery Management System(
3. Do not exceed the output voltage and current ranges as specified in the NPB-750 specifications

Auto Ranging function by DIP S.W Setting (Please make sure that the battery is lithium battery and must be matched with BMS before using. Auto ranging function is prohibited for non-lithium batteries)

Back to non-auto ranging as following

Auto Derating function

Covered by over-temperature protection, the auto de-rating function works under operation either in the charging curve (2 or 3 stages) or under control by communication protocol(CANBus).

• T1(Typ.): Maximum ambient temperature of 100% output current.
• T2(Typ.): T1+5℃.

CANBus communication interface

• CANBus 2.0B version, Can control, set, and monitor that including output charging voltage, output charging current, internal temperature and DC output ON/OFF…….and so on, please refer to the user manual for more details.

CANBus commend list

(format: value, F=0.01)

0x0030| IOUT_SET| R/W| 2| Output current setting

(format: value, F=0.01)

0x0040| FAULT_STATUS| R| 2| Abnormal status

0x0050

| READ_VIN

(NPB-450/750

Does not support)

|

R

|

2

| Input voltage read value

(format: value, F=0.1)

0x0060| READ_VOUT| R| 2| Output voltage read value

(format: value, F=0.01)

0x0061| READ_IOUT| R| 2| Output current read value

(format: value, F=0.01)

0x0062| READ_ TEMPERATURE_1| R| 2| Internal ambient temperature

(format: value, F=0.1)

0x0080| MFR_ID_B0B5| R| 6| Manufacturer’s name
0x0081| MFR_ID_B6B11| R| 6| Manufacturer’s name
Command Code| Command Name| Transaction Type| # of Data Bytes| Description
---|---|---|---|---
0x0082| MFR_MODEL_B0B5| R| 6| Manufacturer’s model name
0x0083| MFR_MODEL_B6B11| R| 6| Manufacturer’s model name
0x0084| MFR_REVISION_B0B5| R| 6| Firmware revision
0x0085| MFR_LOCATION_B0B2| R/W| 3| Manufacturer’s factory location
0x0086| MFR_DATE_B0B5| R/W| 6| Manufacturer date
0x0087| MFR_SERIAL_B0B5| R/W| 6| Product serial number
0x0088| MFR_SERIAL_B6B11| R/W| 6| Product serial number
0x00B0| CURVE_CC| R/W| 2| The constant current setting of the charge curve

(format: value, F=0.01)

0x00B1| CURVE_CV| R/W| 2| Constant voltage setting of charge curve (format: value, F=0.01)
0x00B2| CURVE_FV| R/W| 2| Floating voltage setting of charge curve

(format: value, F=0.01)

0x00B3| CURVE_TC| R/W| 2| Taper current setting value of charging curve

(format: value, F=0.01)

0x00B4| CURVE_CONFIG| R/W| 2| Configuration setting of charge curve
0x00B5| CURVE_CC_TIMEOUT| R/W| 2| CC charge timeout setting of the charging curve
0x00B6| CURVE_CV_TIMEOUT| R/W| 2| CV charge timeout setting of the charging curve
0x00B7| CURVE_FV_TIMEOUT| R/W| 2| FV charge timeout setting of the charging curve
0x00B8| CHG_STATUS| R| 2| Charging status reporting
0x00B9| CHG_RST_VBAT| R/W| 2| Reset the voltage point of the charging curve after the battery is fully charged
0x00C0| SCALING_FACTOR| R| 2| Scaling ratio
0x00C1| SYSTEM_STATUS| R| 2| System status
0x00C2| SYSTEM_CONFIG| R/W| 2| System configuration

Charger OK Signal

• The Charger OK signal is a TTL level signal.
• The maximum sourcing current is 10mA.

Battery Full Signal

• Battery full signal is a TTL level signal.
• The maximum sourcing current is 10mA.

Remote ON-OFF Control

The NPB-750 can be turned ON/OFF by using the “Remote Control” function.

The charger is shipped, by factory default, with Remote ON-OFF(pin 7) and +12Vaux (pin 8) shorted by connector.

Temperature compensation(3 stage only)

• Temperature compensation function to prolong battery life for lead-acid batteries. The temperature compensation range is 0 ~ 40℃.
• The battery temperature sensor comes along with the charger and can be connected to the unit to allow temperature compensation of the charging voltage.
• If the sensor is not used, the charger works normally.

DC Output Side LED Indicators & Corresponding Signal at Function Pins

Mechanical Specification

• Intelligent Battery Charger model

Pin4.(Note.1)
2| A0| CANBus interface address line(A0). Referenced to GND(Signal) Pin4.(Note.1)
3| +3.3V| +3.3V voltage output, referance to GND(pin 4).
4| GND(Signal)| CANBus interface address lines GND.
__

5

| __

Battery Full

| Battery Full Signal, referenced to GND-AUX(Pin 9 & 10).

The Signal is a TTL-level signal. The maximum sourcing current is 10mA and only for output. (Note.2) Low (-0.5 ~ 0.5V) : When the battery is charging.

High (4.5 ~ 5.5V): When the battery is full.

__

6

| __

Charger OK

| Charger OK Signal, referenced to GND-AUX(Pin 9 & 10).

The Signal is a TTL-level signal. The maximum sourcing current is 10mA and only for output. (Note.2) Low (-0.5 ~ 0.5V) : When the charger fails or the protect function is activating.

High (4.5 ~ 5.5V): When the charger is working properly.

__

7

| Remote ON-OFF| Remote charger ON/OFF Function.

The charger can turn the output ON/OFF by dry contact between Remote ON-OFF and +12V-AUX.(Note.2)

Short (10.8 ~ 13.2V): Charger ON; Open (-0.5 ~ 0.5V): Charger OFF; The maximum input voltage is 13.2V.

8| +12Vaux| It is controlled by the Remote ON-OFF control.
9,10| GND-AUX| The signal return is isolated from the output terminal. (+V & -V)
11| CANH| For CANBus model: Data line used in CANBus interface. (Note.2).
12| CANL| For CANBus model: Data line used in CANBus interface. (Note.2).
13| NTC(RTH+)| The temperature sensor(NTC, 5KOhm) comes along with the charger and can be connected to the unit to allow temperature

compensation of the charging voltage for lead-acid batteries. The temperature compensation range is 0 ~ 40℃(3 stages only).

14| NTC(RTH-)

Note1: Non-isolated signal, referenced to [GND(signal)].
Note2: Isolated signal, referenced to GND-AUX

Accessory List

• NTC Sensor and Remote Control mating along with NPB-750 (Standard accessory)

Connection Diagram

• Carry handle (Optional accessory, battery charger, and pull handle should be ordered separately)

Handle

Footpad

INSTALLATION MANUAL

Please refer to: http://www.meanwell.com/manual.html

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