TECHNICAL DATASHEETLYTE II DIN Rail Power Supply
DRL-240W series / DRL-V240W1EN

Highlights & Features
•
•
•
•
•
•
•

Universal AC input voltage range
Built-in constant current circuit for reactive loads
High power density
Operate from -30°C to +70°C with -40°C Cold Start
Reduced no-load power consumption
Compliance with DOE VI Energy Standard
Compliance to SEMI F47 @ 200 Vac

Safety Standards

CB Certified for worldwide use

Model Number:
DRL-V240W1EN
Unit Weight:
0.62 kg (1.37 lb)
Dimensions (H x W x D): 123.6 x 40 x 116.8 mm(4.87 x 1.57 x 4.60 inch)

General Description
Delta’s LYTE II DIN rail power supply series is designed for cost sensitive users who need to fulfill essential features needed for many
general industrial applications, without compromising on quality and reliability. The convection-cooled LYTE II series will operate fullpower from -30°C to +50°C, then de-rating up to +70°C at 230 Vac. It can operate in constant current mode, making it suitable forinductive and capacitive loads. The product is certified according to safety standards IEC/EN/UL 62368-1. Electromagnetic radiated andconducted emissions are compliant to heavy industrial EN 61000-6-4 Class B Emission standard and EN 61000-6-2 Immunity standard.
The product comply with environmental protection requirements as per RoHS Directive.

Model Information
LYTE II DIN Rail Power Supply
Model Number

Input Voltage Range

DRL-12V240W1EN
DRL-24V240W1EN

90-264 Vac

DRL-48V240W1EN

Rated Output Voltage

Rated Output Current

12 Vdc20.0 A

24 Vdc10.0 A

48 Vdc

5.0 A

Model NumberingDR

L–

DIN Rail Product TypeL – LYTE Family

□V

240W

1

E

N

Output Voltage
12 – 12 V
24 – 24 V
48 – 48 V

OutputPower

Single Phase

LYTE II Series
N – No DC OK
with Slim Design
Relay Contact*1: 24 V model only1

All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 04)

Blank – No coating
A – With coating*1

TECHNICAL DATASHEETLYTE II DIN Rail Power Supply
DRL-240W series / DRL-V240W1EN
Specifications
Model Number

DRL-12V240W1EN

DRL-24V240W1EN

DRL-48V240W1EN

Input Ratings / Characteristics
Nominal Input Voltage

100-240 Vac

Input Voltage Range

90-264 Vac

Nominal Input Frequency

50-60 Hz

Input Frequency Range

47-63 Hz

Input Current

2.5 A typ. @ 115 Vac, 1.3 A typ. @ 230 Vac

Efficiency at 100% Load

86.5% typ. @ 230 Vac

90.0% typ. @ 230 Vac

90.5% typ. @ 230 Vac

Average Efficiency(25%, 50%, 75%, 100%)88% typ. @ 115 Vac

88% typ. @ 115 Vac

88% typ. @ 115 Vac

No Load Power Consumption

0.15 W max @ 115 Vac &230 Vac0.21 W max @ 115 Vac &230 Vac

0.3 W max @ 115 Vac &230 VacMax Inrush Current (Cold Start)

40 A typ. @ 230 Vac

Power Factor at 100% Load

> 0.95 @ 115 Vac & 230 Vac

Leakage Current< 0.75 mA @ 240 Vac

Output Ratings / Characteristics*2
Nominal Output Voltage

12 Vdc24 Vdc48 VdcFactory Set Point Tolerance

12 Vdc ± 1%

24 Vdc ± 1%

48 Vdc ± 1%

Output Voltage Adjustment Range

10.8-13.2 Vdc

21.6-26.4 Vdc

43.2-52.8 Vdc

Output Current

20.0 A

10.0 A

5.0 A

Output Power240 W maxLine Regulation± 0.5% @ 115 Vac & 230 Vac

Load Regulation± 1.0%± 0.5%± 0.5%

PARD (20 MHz)< 120 mVpp @ 0°C to +70°C < 150 mVpp @ 0°C to +70°C < 200 mVpp @ 0°C to +70°C< 360 mVpp @ -30°C to 0°C < 450 mVpp @ -30°C to 0°C < 600 mVpp @ -30°C to 0°C

Rise Time

30 ms typ. @ 115 Vac & 230 Vac

Start-up Time

500 ms typ. @ 115 Vac & 230 Vac

Hold-up Time

20 ms typ. @ 115 Vac (100% load)
20 ms typ. @ 230 Vac (100% load)

Dynamic Response(Overshoot & Undershoot O/P Voltage)± 10% @ 115 Vac & 230 Vac input, 10-100% load
(Slew Rate: 2.5 A/μs, 50% duty cycle @ 5 Hz & 10 kHz)

Start-up with Capacitive Loads

8,000 µF Max*38,000 µF Max

3,000 µF Max*2 For power will be de-rating from 40°C to 70°C @ 115 Vac & 50°C to 70°C @ 230 Vac, and Vin < 100 Vac, see Engineering Data power de-rating information.
*3 PARD is measured with an AC coupling mode, 5 cm wires, and in parallel to end terminal with 0.1 μF ceramic capacitor & 47 μF electrolytic capacitor. PSU need to burn inaround 5 minutes when AMB ≤ 0°C

2

All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 04)

TECHNICAL DATASHEETLYTE II DIN Rail Power Supply
DRL-240W series / DRL-V240W1EN
Model Number

DRL-12V240W1EN

DRL-24V240W1EN

DRL-48V240W1EN

MechanicalCase Cover / Chassis

SGCC / Aluminum

Dimensions (H x W x D)

123.6 x 40 x 116.8 mm (4.87 x 1.57 x 4.60 inch)

Unit Weight

0.62 kg (1.37 lb)

Indicator

Green LED (DC OK)

Cooling System
Terminal*

Convection

4

Input
OutputWire

3 Pins (Rated 300 V / 30 A)
4 Pins (Rated 300 V / 20 A)

Input

AWG 18-12 (Current rating can refer to “AWG Wire Table”)

OutputAWG 18-12 (Current rating can refer to “AWG Wire Table”)

Mounting RailStandard TS35 DIN Rail in accordance with EN 60715

Noise (1 Meter from power supply)Sound Pressure Level (SPL) < 25 dBA*4 The torque at the terminal connector shall not exceed 4 Kgf.cm. (3.47 lbf.in).

Environment
Surrounding Air
TemperaturePower De-rating

OperatingStorage
Temperature
Input
Voltage-30°C to +70°C (-40°C Cold Start)-40°C to +85°C> 40°C de-rate power by 1.67 % / °C @ 115 Vac> 50°C de-rate power by 2.5 % / °C @ 230 Vac< 100 Vac de-rate power by 1% / Vac

Operating Humidity

20 to 90% RH (Non-Condensing)Operating Altitude
Shock Test

NonOperating

0 to 5,000 Meters (16,400 ft.)
IEC 60068-2-27, Half Sine Wave: 50 G for duration of 11 ms; 3 times per direction,
9 times in total

Operating

IEC 60068-2-27, Half Sine Wave: 10 G for duration of 11 ms; 1 time in X axis

NonOperating

IEC 60068-2-6, Random: 5 Hz to 500 Hz (2.09 G); 20 min per axis for all X, Y, Z direction

Operating

IEC 60068-2-6, Sine Wave: 10 Hz to 500 Hz @ 19.6 m/s² (2 G peak);
10 min per cycle, 60 min for X direction

Vibration

Over Voltage Category

II (Compliance to EN 62477-1 OVC III with 2000 meters altitude)

Pollution Degree

2Protections
Overvoltage
Overload / Overcurrent
Over Temperature< 17.4 V, SELV Output,< 33.6 V, SELV Output,
Latch Mode
Latch Mode
105 - 150% of rated load current, Auto-recovery
Continuous current limit Mode*5 (Vo > 80%)
Latch Mode

Short Circuit

Hiccup Mode, Non-Latching(Auto-Recovery when the fault is removed)

Protection Against ShockClass I with PE*6 connection*5 Constant current limit protection for inductive and capacitive load applications*6 PE: Primary Earth3

All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 04)< 64.8 V, SELV Output,
Latch Mode

TECHNICAL DATASHEETLYTE II DIN Rail Power Supply
DRL-240W series / DRL-V240W1EN
Model Number

DRL-12V240W1EN

DRL-24V240W1EN

DRL-48V240W1EN

Reliability Data
MTBF

Telcordia
SR-332

Expected Cap Life Time

> 700,000 hrs
I/P: 115 Vac & 230 Vac, O/P: 100% load, Ta: 25°C
10 years (230 Vac, 50% load @ 40°C)

Safety Standards / Directives
Electrical Safety

CB scheme
TUV Bauart
UL/cULBSMI
EAC
KCIEC 62368-1, IEC 60950-1, IEC 61010-1 & -2-201
EN 62368-1, EN 61010-1 & -2-201
UL 62368-1
CNS14336-1
TP TC 004/2011
K 60950-1 (24 V model only)CE

In conformance with EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU

UKCA

In conformance with Electrical Equipment (Safety) Regulations 2016 and Electromagnetic
Compatibility Regulations 2016

Galvanic Isolation

4

Input toOutput

3.0 KVac

Input toGround

2.0 KVac

Output to
Ground

1.0 KVac

All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 04)

TECHNICAL DATASHEETLYTE II DIN Rail Power Supply
DRL-240W series / DRL-V240W1EN
Model Number

DRL-12V240W1EN

DRL-24V240W1EN

DRL-48V240W1EN

EMC
Emissions (CE & RE)

CISPR 32, EN/BS EN 55032, EN/BS EN 61000-6-4, AS/NZS CISPR32, EN/BS EN 61204-3,
KN 32 (24 V model only)
Compliance to FCC Title 47, EN/BS EN 61000-6-3: Class B

Component Power
Supply for General Use

EN/BS EN 61204-3

Immunity

EN/BS EN 55035, KN 35 (24 V model only), EN/BS EN 61000-6-2
Compliance to EN/BS EN 61000-6-1

Electrostatic
Discharge

IEC 61000-4-2

Level 4 Criteria A1)
Air Discharge: 15 kV
Contact Discharge: 8 kV

Radiated Field

IEC 61000-4-3

Electrical Fast
Transient / Burst

IEC 61000-4-4

Criteria A1)
80 MHz – 1 GHz, 10 V/M, 80% Modulation (1 kHz)
1.4 GHz – 2 GHz, 3 V/M, 80% Modulation (1 kHz)
2 GHz – 2.7 GHz, 1 V/M, 80% Modulation (1 kHz)Level 3 Criteria A1)
2 kV

Surge

IEC 61000-4-5

Conducted

IEC 61000-4-6

Power Frequency
Magnetic Fields

IEC 61000-4-8

Level 4 Criteria A1)
30 A/mVoltage Dips andInterruptions

IEC 61000-4-11

0% residual; 1 cycle, Criteria B2)
40% residual; 10 cycle, Criteria C3)
70% residual; 25 cycle, Criteria C3)

Level 4 Criteria A1)
Common Mode4): 4 kV
Differential Mode5): 2 kVLevel 3 Criteria A1)
150 kHz – 80 MHz, 10 Vrms

Harmonic Current
Emission

IEC/EN/BS EN 61000-3-2, Class A

Voltage Fluctuation andFlicker

IEC/EN/BS EN 61000-3-3

Voltage Sag Immunity
SEMI F47 – 0706

80% of 200 Vac
70% of 200 Vac
50% of 200 Vac

160 Vac, 1000 ms
140 Vac, 500 ms
100 Vac, 200 ms

Criteria A1)
Criteria A1)
Criteria A1)

1) Criteria A: Normal performance within the specification limits
2) Criteria B: Temporary degradation or loss of function which is self-recoverable
3) Criteria C: Output out of regulation, shuts down during test (Need to recycle AC power cord to normal operation after test)4) Asymmetrical: Common mode (Line to earth)5) Symmetrical: Differential mode (Line to line)5

All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 04)

TECHNICAL DATASHEETLYTE II DIN Rail Power Supply
DRL-240W series / DRL-V240W1EN
Block Diagram
DRL-V240W1EN
Transformer &Power StageL
AC Input

EMI Filter

N

PFC Converter& Inrush current
limit& FilterOver Temperature
Protection

DC/DC
ConverterVo+
Output RectifierFilterVo-

PWM Control &Over Power
Protection

Photo Coupler &Feedback Control(CV & CC)

Photo Coupler &Over Voltage
Protection

Device Description

1)
2)
3)
4)
5)

6

DC Output

Input terminal block connector
Output terminal block connector
DC voltage adjustment potentiometer
DC OK LED (Green)
Universal mounting rail system

All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 04)

TECHNICAL DATASHEETLYTE II DIN Rail Power Supply
DRL-240W series / DRL-V240W1EN
Dimensions
H x W x D: 123.6 x 40 x 116.8 mm (4.87 x 1.57 x 4.60 inch)*Unless otherwise specified tolerance of dimension are ± 0.5 mm
Item Device Description
1

Input terminal block connector
Pin 1: L
Pin 2: N
Pin 3: PE

2

Output terminal block connector
Pin 1 to 2: V(-)
Pin 3 to 4: V(+)

AWG Wire Table
Current Rating for PVC Wire
6 AWG
52.5 A
8 AWG
37.5 A
10 AWG
29.0 A
12 AWG
22.5 A
14 AWG
16.5 A
16 AWG
12.0 A
18 AWG
9.0 A
20 AWG
6.5 A
22 AWG
5.0 A
24 AWG
3.5 A
26 AWG
2.5 A
28 AWG
2.0 A
30 AWG
1.5 A

7All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 04)

TECHNICAL DATASHEETLYTE II DIN Rail Power Supply
DRL-240W series / DRL-V240W1EN
Engineering Data
Note

Output Load De-rating VS Surrounding Air Temperature

1.

110Percentage of Max Load(%)

100
90

2.

80
70
60

3.

50
40
30
20
10
0

-30

-20

-10

0
10
20
30
40
50
Surrounding Air Temerature (°C)

― 230 Vac
Fig. 160

70- - - 115 Vac

4.

5.

De-rating for Vertical Mounting Orientation> 40°C de-rate power by 1.67 % / °C @ 115 Vac> 50°C de-rate power by 2.5 % / °C @ 230 Vac

6.

7.

Power supply components may degrade, or
be damaged, when the power supply is
continuously used outside the shaded region,refer to the graph shown in Fig. 1.
The PSU will be bouncing and start up time
will not exceed 5s when ambient temperature
at ‐30 °C
If the output capacity is not reduced when thesurrounding air temperature > 50°C, thedevice will run into Over Temperature
Protection. When activated, power supply will
latch off, until the surrounding air temperature
is lowered or the load is reduced as far asnecessary to keep the device in working
condition, and require removal/re-applicationof input AC voltage in order to restart.
In order for the device to function in themanner intended, it is also necessary to keepa safety distance as recommended in thesafety instructions while the device is inoperation.
Depending on the surrounding air temperatureand output load delivered by the power
supply, the device can be very hot!
Need to consider power de-rating if
Surrounding Air Temperature is < 40°C at
115 Vac and < 50°C at 230 Vac.
If the device has to be mounted in any otherorientation, please contact info@deltapsu.com
for more details.

Output Load De-rating VS Input Voltage
110



100

No output power de-rating for the input
voltage from 100 Vac to 264 Vac

90
80
Load (%)

70
60
50
40
30
20
10
0

90

100

264
Input Voltage (Vac)Fig. 28De-rating for AC Input Voltage< 100 Vac de-rate power by 1 % / Vac

All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 04)

TECHNICAL DATASHEETLYTE II DIN Rail Power Supply
DRL-240W series / DRL-V240W1EN
Assembly & Installation
The power supply unit (PSU) can be mounted on 35 mm DIN rails in accordance with EN 60715. The device should be installed with
input terminal block at the bottom.
Each device is delivered ready to install.

Mounting

Dismounting

Fig. 3.1 Mounting

Fig. 3.2 Dismounting

Snap on the DIN rail as shown in Fig. 3.1:
1. Tilt the unit upwards and insert it onto the DIN rail.
2. Push downwards until stopped.
3. Press against the bottom front side for locking.
4. Shake the unit slightly to ensure that it is secured

To uninstall, Delta provides an easy way to pull or slide down thelatch with screw driver as shown in Fig. 3.2. Then slide the power
supply unit (PSU) in the opposite direction, release the latch andpull out the power supply unit (PSU) from the rail.

Safety Instructions
Vertical Mounting
•
•

•
•
•
•
•

9

ALWAYS switch mains of input power OFF before connecting and disconnecting the
input voltage to the unit. If mains are not turned OFF, there is risk of explosion / severe
damage.
To guarantee sufficient convection cooling, keep a distance of 40 mm (1.57 inch)
above and 20 mm (0.79 inch) below the device as well as a lateral distance of 5 mm
(0.2 inch) to other units and if load less than 50%, lateral distance can be 0 mm. In
case the adjacent device is a heat source, the lateral distance will be 15 mm (0.6inch).
Note that the enclosure of the device can become very hot depending on the surrounding
air temperature and load of the power supply. Risk of burns!
The main power must be turned off before connecting or disconnecting wires to theterminals.
DO NOT insert any objects into the unit.
Hazardous voltages may be present for up to 5 minutes after the input mains voltage is
disconnected. Do not touch the unit during this time.
The power supplies are built in units and must be installed in a cabinet or room
(condensation free environment and indoor location) that is relatively free of conductive
contaminants.

All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 04)

TECHNICAL DATASHEETLYTE II DIN Rail Power Supply
DRL-240W series / DRL-V240W1EN
FunctionsGraph illustrating the Start-up Time, Rise Time, and Hold-up Time

Start-up TimeThe time required for the output voltage to reach 90% of its final steady state set value, after the input voltage is applied.

Rise TimeThe time required for the output voltage to change from 10% to 90% of its final steady state set value.

Hold-up TimeTime between the collapse of the AC input voltage, and the output falling to 95% of its steady state set value.

Inrush Current

Dynamic Response

Inrush current is the peak, instantaneous, input current measured
and, occurs when the input voltage is first applied. For AC input
voltages, the maximum peak value of inrush current will occur
during the first half cycle of the applied AC voltage. This peak value
decreases exponentially during subsequent cycles of AC voltage.

The power supply output voltage will remains within ±10% of its
steady state value, when subjected to a dynamic load from 10% to100% of its rated current.

10

All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 04)

TECHNICAL DATASHEETLYTE II DIN Rail Power Supply
DRL-240W series / DRL-V240W1EN
Overload & Overcurrent Protections (Continuous Current)

Overvoltage Protection (Latch Mode)

The power supply offers constant current limit protection for
inductive and capacitive load applications when output current
range is 105~150% of IO (Max load) and output voltage is morethan 80%. Upon such an occurrence, the VO (output voltage) will
start to droop. Once the power supply has reached its maximum
power limit, the protection will be activated; and, the power supply
will operate in continuous current. The power supply will recover
once the cause of OLP or OCP is removed, and IO (output current)
is back within the specified range.

The power supply’s overvoltage circuit will be activated when its
internal feedback circuit fails. The output voltage shall not exceed
its specifications as described in “Protections” section. Powersupply will latch off, and require removal/re-application of input AC
voltage in order to restart.
The power supply should be latch.

Over Temperature Protection (Latch Mode)

Short Circuit Protection (Auto-Recovery)
The power supply’s output Short Circuit Protection function also
provides protection against short circuits. When a short circuit isapplied, the output current will operate in “Hiccup mode”. The
power supply will return to normal operation after the short circuit
is removed.

11

As described in load de-rating section, the power supply also has
Over Temperature Protection (OTP). In the event of a higher
operating temperature at 100% load; or, when the operating
temperature is beyond what is recommended in the de-rating
graph, the OTP circuit will be activated. When activated, power
supply will latch off, until the surrounding air temperature drops toits normal operating temperature or the load is reduced asrecommended in the de-rating graph. Removal/re-application of
input AC voltage will then be required in order to restart.

All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 04)

TECHNICAL DATASHEETLYTE II DIN Rail Power Supply
DRL-240W series / DRL-V240W1ENOthersAttention
Delta provides all information in the datasheets on an “AS IS” basis and does not offer any kind of warranty through the information forusing the product. In the event of any discrepancy between the information in the catalog and datasheets, the datasheets shall prevail(please refer to www.DeltaPSU.com for the latest datasheets information). Delta shall have no liability of indemnification for any claim
or action arising from any error for the provided information in the datasheets. Customer shall take its responsibility for evaluation of using
the product before placing an order with Delta.
Delta reserves the right to make changes to the information described in the datasheets without notice.

Manufacturer and Authorized Representatives Information
Manufacturer
Thailand
Delta Electronics (Thailand) PCL.
909 Pattana 1 Rd., Muang, Samutprakarn, 10280 Thailand

TaiwanDelta Electronics, Inc.
3 Tungyuan Road, Chungli Industrial Zone, Taoyuan County
32063, Taiwan

Authorized Representatives
The Netherlands
Delta Greentech (Netherlands) B.V.
Zandsteen 15, 2132 MZ Hoofddorp, The Netherlands

12

United Kingdom
Delta Electronics Europe Limited
1 Redwood Court, Peel Park Campus,
East Kilbride, Glasgow, G74 5PF, United Kingdom

All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 04)