MEAN WELL NPB-450-12 450W High Reliable Ultra Wide Output Range Intelligent Battery Charger Owner’s Manual

: June 13, 2024
: MEAN WELL

Table of Contents

MEAN WELL NPB-450-12 450W High Reliable Ultra Wide Output Range
Product Usage Instructions
Features
SPECIFICATION
Function Manual
2.Programmable charging curve
Charger OK Signal
Mechanical Specification
Read User Manual Online (PDF format)
Download This Manual (PDF format)

MEAN WELL NPB-450-12 450W High Reliable Ultra Wide Output Range

Intelligent Battery Charger

NPB-450 Series – 450W High Reliable Ultra Wide Output Range Intelligent Battery Charger
The NPB-450 series is a high reliable and intelligent battery charger with an ultra wide output range. It is designed to provide efficient charging for various battery capacities and is suitable for a wide range of applications.

Specifications

Model| Output| Boost Charge Voltage (Vboost)| Float Charge Voltage (Vfloat)| Charge Voltage Range| Max. Output Current (CC)| Max. Power| Recommended Battery Capacity (Amp Hours)| Leakage Current from Battery (Typ.)| Efficiency (Typ.)| AC Current (Typ.)| Inrush Current (Typ.) Cold Start| Leakage Current| Dimension| Packing
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
NPB-450-12| 12V| 14.4V| 13.8V| 10.5 – 21V| 25A| 420W| 90 – 300AH| 0.98/115VAC, PF > 0.95/230VAC at full load| 92%| 4.5A/115VAC, 2.2A/230VAC| 50A at 230VAC| 95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions
250 periods| 20513555mm (LWH)| 1.02Kg; 8pcs/10Kg/1.71CUFT
NPB-450-24| 24V| 28.8V| 27.6V| 21 – 42V| 13.5A| 453.6W| 45 – 155AH| 0.98/115VAC, PF > 0.95/230VAC at full load| 93%| 4.5A/115VAC, 2.2A/230VAC| 50A at 230VAC| 95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions
250 periods| 20513555mm (LWH)| 1.02Kg; 8pcs/10Kg/1.71CUFT
NPB-450-48| 48V| 57.6V| 55.2V| 42 – 80V| 6.8A| 456.96W| 24 – 80AH| 0.98/115VAC, PF > 0.95/230VAC at full load| 93%| 4.5A/115VAC, 2.2A/230VAC| 50A at 230VAC| 95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions
250 periods| 20513555mm (LWH)| 1.02Kg; 8pcs/10Kg/1.71CUFT
NPB-450-72| 72V| 72V| 69V| 54 – 100V| 5.5A| 462W| 19 – 64AH| 0.98/115VAC, PF > 0.95/230VAC at full load| 93%| 4.5A/115VAC, 2.2A/230VAC| 50A at 230VAC| 95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions
250 periods| 20513555mm (LWH)| 1.02Kg; 8pcs/10Kg/1.71CUFT

Product Usage Instructions

Make sure the charger is compatible with your battery specification. If necessary, contact your battery vendor and MEAN WELL for details.
Connect the charger’s AC input side to a power source using the appropriate cables.
Connect the charger’s DC output side to the battery you want to charge using the appropriate cables.
Ensure that the boost charge voltage (Vboost) is set to the desired value using the SBP-001 smart battery charging programmer if necessary.
Turn on the charger.
The charger will automatically adjust the charging voltage and current based on the battery’s needs.
Monitor the charger’s status indicators (CHARGER OK and BATTERY FULL) to determine the charging progress.
Once the battery is fully charged, disconnect the charger from the power source and the battery.

Please refer to the user manual for more detailed information and safety precautions.

Note: The above instructions are a general guideline. Please consult your specific product’s user manual for detailed instructions and any additional requirements.

BS EN/EN60335-1/2-29 TEC60335-1/2-29

Features

Auto ranging with ultra-wide charging voltage (10.5~21V, 21~42V, 42~80V, 54~100V; Please refer to page 8 for setting)
Built-in CANBus protocol for control, setting and monitoring • Programmable 2/3 stage and 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)
Charger OK and 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.: DS-Carry handle, sold separately)
Comply with 62368-1 + 60335-1/-2-29 dual certification
Suitable for lead-acid (Pb) and li-ion batteries

Applications

AGV
E-Bike, E-Scooter, Camping car, Bus, 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 back-up battery

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

Description
NPB-450 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 including intelligent, versatile, user friendly, safe, and compact. The series have four models with output voltage ranges of 10.5~21V, 21~42V, 42~80V, and 54~100V 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-450 can pair with MEAN WELL’s SBP-001 programmer for digital configuration, such as select 2/3 stage charging, adjust charging voltage/current, and set charging cycle time to protect battery lifetime. Through the user-friendly DIP S.W. on front panel, 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 TEC/EN/UL62368-1 and household appliances EN60335-1/-2-29 dual safety and 3-year warranty to guarantee reliable operation. The NPB-450 is truly an intelligent, safe, and reliable universal charger with outstanding cost performance.

SPECIFICATION

MODEL	NPB-450-12	NPB-450-24	NPB-450-48	NPB-450-72
OUTPUT	BOOST CHARGE VOLTAGE(Vboost)(default)	14.4V
28.8V	57.6V	72V
FLOAT CHARGE VOLTAGE(Vfloat)(default)	13.8V	27.6V	55.2V	69V
CHARGE VOLTAGE RANGE Note.3	10.5 ~ 21V	21 ~ 42V	42 ~ 80V

Note.9

| 21.5 ~ 26V| 43 ~ 52V| 82 ~ 100V| 102 ~ 120V
Protection type : Shut down and latch off o/p voltage, re-power on to recover
REVERSE POLARITY| Protected internal reverse detection, No damage, re- power on to recover after fault condition is removed
OVER TEMPERATURE| Shut down O/P voltage, recovers automatically after temperature goes down
FUNCTION| CHARGING STAGE| 2 or 3 stage selectable through DIP S.W on panel, or SBP-001 with computer
CHARGING PARAMETERS ADJUSTABLE| Programmable: Constant current(CC),Tapper current(TC), Constant voltage(CV) and Float voltage(FV) can be set through SBP-001 with computer
Manual setting: 4 built-in charging curves adjustable via DIP S.W on panel, Please refer to function manual for more detail
AUTO RANGING FOR CHARGING (Typ.)| Please refer to functin manual for more detail (page 8)
Charging current adjustable 50~100% by via potentiometer on panel (Only for auto ranging mode)
CANBUS INTERFACE| CANBus 2.0B, Can control, Setting and monitoring(V O ,I O ,charging curve, internal temp. and DC output ON/OFF)
CHARGER OK| The TTL signal out, Charger OK = H(4.5 ~ 5.5V) ; Charger failure or protection status =L( -0.5 ~ +0.5V)
BATTERY FULL SIGNAL| The TTL signal out, Battery full = H(4.5 ~ 5.5V ); Charging = L(-0.5 ~ +0.5V)
REMOTE CONTROL| Short : Charger normal work Open : Charger stop charging
TEMPERATURE COMPENSATION| By external NTC
FAN SPEED CONTROL| Depends on internal temperature
ENVIRONMENT| WORKING TEMP.| -30 ~ +70℃ (Refer to “Derating Curve”)
WORKING HUMIDITY| 20 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY| -40 ~ +85℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT| ±0.05%/℃ (0 ~ 50℃)
VIBRATION| 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes
SAFETY & EMC

(Note 10)

95% interruptions 250 periods

Modification for charger specification may be required for different battery specification. Please contact battery vendor and MEAN WELL for details.
All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
This is the range when programming Vboost or Vfloat by using SBP-001, the smart battery charging programmer.
Refer to derating curve.
This is MEAN WELL’s suggested range. Please consult your battery manufacturer for their suggestions about maximum charging current limitation.
Derating may be needed under low input voltages. Please check the derating curve for more details.
The efficiency is measured at 16.8V charge voltage(12V model), 33.6V charge voltage(24V model), 67.2V charge voltage(48V model), 84V charae voltage(72V model),
This protection mechanism is specified for the case the short circuit occurs after the charger is turned on.
Each model incorporates a MCU-controlled dynamic over voltage protection, which is about 125% of boost over Constant Current stage and Constant Voltage stage whereas 125% of Viloat over Float stage.
The charger is considered a component which will be installed into a final equipment. 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 http://www.meanwell.com)
The ambient temperature derating of 3.5°C/1000m with fanless models and of 5 °C/1000m with fan models for operating altitude higher than 2000(650 * Product Liabilitv Disclaimer

For detailed information. please refer to https://www.meanwell.com/serviceDisclaimer.aspx

| Arrow.com.| File Name:N PB-450-SPEC 2022-11-14

Block Diagram

Derating Curve

Function Manual

Manual setting

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

S.W NO.	Function	Description
1	OFF: 3 stage(Default), ON: 2 stage	This series provides 2 or 3

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

Charging curve can be adjustable via DIP S.W on panel

stage charging curve
Default 3 stage charging curve

State	NPB-450-12	NPB-450-24	NPB-450-48	NPB-450-72
Constant Current	25A	13.5A	6.8A	5.5A
Vboost	14.4V	28.8V	57.6V	72V
State	NPB-450-12	NPB-450-24	NPB-450-48	NPB-450-72
---	---	---	---	---
Constant Current	25A	13.5A	6.8A	5.5A
Vboost	14.4V	28.8V	57.6V	72V
Vfloat	13.8V	27.6V	55.2V	69V

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 by the means of the DIP S.W; please refer to the table below and the Mechanical Specification.

Embedded 2 stage charging curve

DIP SW position	12V model
2	3
OFF	OFF
ON	OFF
OFF	ON
ON	ON
DIP SW position	24V model
2	3
OFF	OFF
ON	OFF
OFF	ON
ON	ON
DIP SW position	48V model
2	3
OFF	OFF
ON	OFF
OFF	ON
ON	ON
DIP SW position	72V model
2	3
OFF	OFF

5.5A

| 72
ON| OFF| Pre-defined, gel battery| 70
OFF| ON| Pre-defined, flooded battery| 71
ON| ON| Pre-defined, AGM battery,LiFe04| 73

Embedded 3 stage charging curve

DIP SW position	12V model
2	3
OFF	OFF
ON	OFF
OFF	ON
ON	ON
DIP SW position	24V model
2	3
OFF	OFF
ON	OFF
OFF	ON
ON	ON
DIP SW position	48V model
2	3
OFF	OFF
ON	OFF
OFF	ON
ON	ON
DIP SW position	72V model
2	3
OFF	OFF
ON	OFF
OFF	ON
ON	ON

2.Programmable charging curve

Charging Curve can be set via SBP-001 with computer

Step 1
Hardware configuration

Step 2
Connect to software for setting

Smart programmer (Sold separately)

NPB-450 pin assigment

Connector	Pin Assigment
NPB-450 14pins connector (Connector Part No.: HRS DF11-14DS)

1

|

2

|

3

|

4

|

5

|

6

|

7

|

8

|

9

|

10

|

11

|

12

|

13

|

14

A1| A0| +3.3V| GND| Battery Full| Charger OK| Remote ON-OFF|

+12Vaux

|

GND-AUX

|

CANH

|

CANL

| NTC (RTH+)| NTC (RTH-)

SBP-001 pin assigment

Connector	Pin Assigment

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| CANL| 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 the 2 or 3 stage selectable, 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 SBP-001 programmer and the computer; all of the setups are able to be finished easily by the means of the specific software.

Note

Tapper current(TC) default is 10%, can be fine tuned from 2% to 30% by SBP-001 with computer or CANBus Interface.
Please contact MEAN WELL for more details.
Software Interface
Auto Ranging for Charging (Default non-Auto ranging)
- Function Description
- NPB-450 has 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-450 will automatically detect the voltage of battery that is connected and adjust charging voltage accordingly. It will not start charging unit appropriate battery voltage is detected.
- While under auto ranging mode, NPB-450’s built-in MCU will adjust charging voltage. There is no potentiometer for voltage adjustment on the front panel.
- While under 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

Default factory setting is OFF via DC output side DIP S.W, Follow steps A1~A6 below to enable the setting.
Auto ranging function should use together with Lithium batteries and BMS (Battery M anagement System).
Do not exceed the output voltage and current ranges as specified in the NPB-450 specifications (please refer to page 2).

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 battery)

Back to non-auto ranging as following

Auto Derating function
Covered by over temperature protection, auto de-rating function works under operation either in charging curve (2 or 3 stage) 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 , setting and monitoring that including output charging voltage, output charging current, internal temperature
and DC output ON/OFF……and so on, please refer to the user m annual user for more details.

CANBus commend list

Command Code	Command Name	Transaction Type	# of data Bytes	Description
0x0000	OPERATION	R/W	1	ON/OFF control
0x0020	VOUT_SET	R/W	2	Output voltage setting

(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| Constant current setting of 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 charging curve
0x00B6| CURVE_CV_TIMEOUT| R/W| 2| CV charge timeout setting of charging curve
0x00B7| CURVE_FV_TIMEOUT| R/W| 2| FV charge timeout setting of charging curve
0x00B8| CHG_STATUS| R| 2| Charging status reporting
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

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

Between Charger OK (pin 6) and GND-AUX (pin 9 & 10)	Charging Status
“High” : 4.5 ~ 5.5V	Work normally
“Low” : -0.5 ~ 0.5V	Failure or protection function activated

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

Between Battery Full (pin 5) and GND-AUX (pin 9 & 10)	Status	LED indication
“High” : 4.5 ~ 5.5V	Battery Full	Green
“Low” : -0.5 ~ 0.5V	Charging	Orange

Remote ON-OFF Control
The NPB-450 can be turned ON/OFF by using the “Remote Control” function.

Between Remote ON-OFF (pin 7) and +12Vaux (pin 8)	Status
S.W Short (pin 7 = 10.8 ~ 13.2V)	ON (Default)
S.W Open (pin 7 = -0.5 ~ 0.5V)	OFF

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. Temperature compensation range is 0 ~ 40℃.
The battery temperature sensor comes along with the charger 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

DIP S.W

| | | 1| 2| 3| Description|
---|---|---|---|---|---|---|---

1

| | | OFF: 3 stage

ON: 2 stage

| OFF| OFF| Default, programmable|
ON| OFF| Pre-defined, Gel battery|
2| | |
3| | |
OFF| ON| Pre-defined, flooded battery|
| OFF| ON|
| | | ON| ON| Pre-defined, AGM battery,LiFe04|

Control Pin No. Assignment : HRS DF11-14DS or equivalent

Mating Housing	HRS DF11-14DS or equivalent
Terminal	HRS DF11-**SC or equivalent

Connector Pin No. Assignment : HRS DF11-14DS or equivalent

Pin No.	Assignment	Mating Housing	Terminal
1	A1	HRS DF11-14DS

or equivalent

| HRS DF11-**SC

or equivalent

LED Status Table

Pin No.	Function	Description
1	A1	CANBus interface address line(A1). Referenced to GND(Signal)

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.

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

14| NTC(RTH-)