MEAN WELL ENC-240 Series 240W Programmable Desktop Type Battery Charger Instruction Manual

: June 11, 2024
: MEAN WELL

Table of Contents

MEAN WELL ENC-240 Series 240W Programmable Desktop Type Battery Charger
Features
Applications
Description
Model Encoding
SPECIFICATION
Function Manual
Mechanical Specification
Accessory List
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MEAN WELL ENC-240 Series 240W Programmable Desktop Type Battery Charger

Features

Charger for lead-acid batteries (flooded, Gel, and AGM) and li-ion batteries (lithium iron and lithium manganese)
Built-in 3-stage programmable charging curve
Universal AC input / Full range
Built-in active PFC function
Fanless design, cooling by free air convection
Built-in temperature compensation function
Protection: Short circuit/Over voltage/Over temperature/Battery under voltage/Battery over voltage/Battery reverse polarity protection
3 years warranty

Applications

Radio system backup solution
Electric scooter charger
Surveillance system

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

Description

ENC-240 is a single output 240W AC/DC desktop-type charger with 3 stage charging curve. In addition to the embedded pre-defined charging curves, the default curve is programmable and thus able to accommodate different types of batteries, such as lead-acid batteries (gel, flooded, and AGM) and li-ion batteries (lithium iron and lithium manganese). With the rugged mechanical design along with the high-efficiency circuitry, ENC-240 operates for the ambient temperature range -30~+70°C under free air convection.

Model Encoding

SPECIFICATION

MODEL	ENC-240-12	ENC-240-24	ENC-240-48
OUTPUT	BOOST CHARGE VOLTAGE(Vboost)(default)	14.4V
28.8V	57.6V
FLOAT CHARGE VOLTAGE(Vfloat)(default)	13.8V	27.6V	55.2V
CHARGE VOLTAGE RANGE Note.3	9 ~ 15V	18 ~ 30V	36 ~ 60V
OUTPUT CURRENT(CC) (default)	16A	8A	4A
RATED POWER	230.4W	230.4W	230.4W
RECOMMENDED BATTERY CAPACITY (AMP HOURS) Note.4	60 ~ 170AH	30 ~
85AH	15 ~ 45AH
LEAKAGE CURRENT FROM BATTERY (Typ.)	<1mA

INPUT

PROTECTION

| SHORT CIRCUIT| Note.6| Protection type : Shut down O/P voltage, re-power on to recover
OVER VOLTAGE| ****

Note.7

| 15.5 ~ 18.2V| 31 ~ 36.5V| 62.1 ~ 72.9V
Protection type : Shut down and latch off o/p voltage, re-power on to recover
REVERSE POLARITY| By internal fuse
OVER TEMPERATURE| Shut down O/P voltage, recovers automatically after temperature goes down
FUNCTION| TEMPERATURE COMPENSATION| By NTC

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 8)

| SAFETY STANDARDS| IEC62368-1, UL62368-1, EAC TP TC 004, BSMI CNS14336-1 approved; Meet BS EN/EN62368-1
WITHSTAND VOLTAGE| I/P-O/P:3KVAC| I/P-FG:2KVAC O/P-FG:0.5KVAC|
ISOLATION RESISTANCE| I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH

EMC EMISSION

EMC IMMUNITY

95% interruptions 250 periods

OTHERS

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.
This is MEAN WELL’s suggested range. Please consult your battery manufacturer for their suggestions about the maximum charging current limitation.
Derating may be needed under low input voltages. Please check the derating curve for more details.
This protection mechanism is specified in case the short circuit occurs after the charger is turned on.
Each model incorporates an MCU-controlled dynamic over-voltage protection, which is about 115% of boost over the Constant Current stage and Constant Voltage stage whereas 115% of Vfloat over the Float stage.
The battery charger is considered an independent unit, but the final equipment still needs to re-confirm that the whole system complies with the
EMC directives. For guidance on how to perform these MC tests, please refer to “EMI testing of component power supplies.” (as available on http://www.meanwell.com)
9. 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.
⅚ Product Liability Disclaimer: For detailed information, please refer to https://www.meanwell.com/serviceDisclaimer.aspx.

Block Diagram

Derating Curve

Static Characteristics

Function Manual

Charging Curve

This series provides a 3-stage charging. The default curve is programmable, whereas other pre-defined curves can be activated by means of the DIP switch; please refer to the table below and the Mechanical Specification.
To accommodate the parameters of the charging curve, SBP-001, the smart battery charging programmer designed by MEAN WELL, and a personal computer are needed. Please contact MEAN WELL for details.

Default 3 stage charging curve

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

Embedded 3 stage charging curve

MODEL	Description	CC(default)	Vboost	Vfloat

12V

| Default, programmable|

16A

| 14.4| 13.8
Pre-defined, gel batter| 14| 13.6
Pre-defined, flooded battery| 14.2| 13.4
Pre-defined, AGM battery| 14.5| 13.5

24V

| Default, programmable|

8A

| 28.8| 27.6
Pre-defined, gel battery| 28| 27.2
Pre-defined, flooded battery| 28.4| 26.8
Pre-defined, AGM battery| 29| 27

48V

| Default, programmable|

4A

| 57.6| 55.2
Pre-defined, gel battery| 56| 54.4
Pre-defined, flooded battery| 56.8| 53.6
Pre-defined, AGM battery| 58| 54

Front Panel LED Indicators & Corresponding Signal at Function Pins

LED	Description
Green	Float (stage 3)
Orange	Charging (stage 1 or stage 2)

Mechanical Specification

Terminal Pin No. Assignment (TB1):

Pin No.	Assignment
1,2	+V
3,4	-V

Note:

Please use wires with a cross-section of 0.5 – 4.0 mm2 (12~20AWG) for connection.
Recommended wires strip length is 9 mm and screw torque is 4.0 lb-inch (0.4~0.5Nm).

DIP SW: