Delta LYTE II Instruction Manual

LYTE II DIN Rail Power Supply
DRL-120W series / DRL-

V120W1EN

TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 03)
1
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-V120W1EN
Unit Weight: 0.45 kg (0.99 lb)
Dimensions (H x W x D): 123.6 x 30 x 116.8 mm
(4.87 x 1.18 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 full
power 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 for
inductive and capacitive loads. The product is certified according to safety standards IEC/EN/UL 62368-1. Electromagnetic radiated and
conducted 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
Rated Output V oltage
Rated Output Current
DRL-12V120W1EN
90-264 Vac
12 Vdc
10.0 A
DRL-24V120W1EN

24 Vdc
5.0 A
DRL-48V120W1EN
48 Vdc
2.5 A
Model Numbering
DR
L –
□V
120W
1
E
N

DIN Rail Product Type
L – LYTE Family
Output Voltage
12 – 12 V
24 – 24 V
48 – 48 V
Output
Power
Single Phase LYTE II Series
with Slim Design
N – No DC OK
Relay Contact
Blank – No coating
A – With coating*1
*1: 24 V model only

LYTE II DIN Rail Power Supply
DRL-120W series / DRL-

V120W1EN

TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 03)
2
Specifications
Model Number DRL-12V120W1EN DRL-24V120W1EN☐DRL-48V120W1EN
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 2.1 A typ. @ 115 Vac, 1.3 A typ. @ 230 Vac
Efficiency at 100% Load 86% typ. @ 230 Vac 88.5% typ. @ 230 Vac 89.5% 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 Vac 0.21 W max @ 115 Vac &
230 Vac
Max Inrush Current (Cold Start) 35 A typ. @ 230 Vac
Leakage Current < 0.5 mA @ 240 Vac
Output Ratings / Characteristics*2
Nominal Output Voltage
12 Vdc 24 Vdc 48 Vdc
Factory 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 10.0 A 5.0 A 2.5 A
Output Power 120 W max
Line Regulation ± 0.5% @ 115 Vac & 230 Vac
Load Regulation ± 1.0% ± 0.5% ± 0.5%
PARD*3 (20 MHz)
< 120 mVpp @ 0°C to +70°C
< 360 mVpp @ -30°C to 0°C
< 150 mVpp @ 0°C to +70°C
< 450
mVpp @ -30°C to 0°C
< 200 mVpp @ 0°C to +70°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 10 ms typ. @ 115 Vac (100% load)
16 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 8,000 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 in
around 5 minutes when AMB ≤ 0°C

LYTE II DIN Rail Power Supply
DRL-120W series / DRL-

V120W1EN

TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 03)
3
Model Number DRL-12V120W1EN DRL-24V120W1EN☐DRL-48V120W1EN
Mechanical
Case Cover / Chassis SGCC
/ Aluminum
Dimensions (H x W x D) 123.6 x 30 x 116.8 mm (4.87 x 1.18 x 4.60 inch)
Unit Weight 0.45 kg (0.99 lb)
Indicator Green LED (DC OK)
Cooling System Convection
Terminal*4
Input
3 Pins (Rated 300 V / 30 A)
Output 4 Pins (Rated 300 V / 20 A)
Wire Input AWG 18-12 (Current rating can refer to “AWG Wire Table”)
Output AWG 18-12 (Current rating can refer to “AWG Wire Table”)
Mounting Rail
Standard 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
Temperature
Operating -30°C to +70°C (-40°C Cold Start)
Storage -40°C to +85°C
Power De-rating Temperature > 40°C de-rate power by 1.67 % / °C @ 115 Vac
> 50°C de-rate power by 2.5 % / °C @ 230 Vac
Input
Voltage < 100 Vac de-rate power by 1% / Vac
Operating Humidity 20 to 90% RH (Non-Condensing)
Operating Altitude
0 to 5,000 Meters (16,400 ft.)
Shock Test Non-
Operating
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
Vibration Non-
Operating
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
Over Voltage Category II (Compliance to EN 62477-1 OVC III with 2000 meters altitude)
Pollution Degree 2
Protections
Overvoltage < 17.4 V, SELV Output,
Latch Mode
< 33.6 V, SELV Output,
Latch Mode
< 64.8 V, SELV Output,
Latch Mode
Overload / Overcurrent 105 - 150% of rated load current, Auto-recovery
Continuous current limit Mode*
5
(Vo > 80%)
Over Temperature Latch Mode
Short Circuit Hiccup Mode, Non-Latching
(Auto-Recovery when the fault is removed)
Protection Against Shock Class I with PE*6 connection
*5 Constant current limit protection for inductive and capacitive load applications
*6 PE: Primary Earth

LYTE II DIN Rail Power Supply
DRL-120W series / DRL-

V120W1EN

TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 03)
4
Model Number DRL-12V120W1EN DRL-24V120W1EN☐DRL-48V120W1EN
Reliability Data
MTBF Telcordia
SR-332
> 700,000 hrs
I/P: 115 Vac & 230 Vac, O/P: 100% load, Ta: 25°C
Expected Cap Life Time 10 years (230 Vac, 50% load @ 40°C)
Safety Standards / Directives
Electrical Safety CB scheme
TUV Bauart
UL/cUL
BSMI
EAC
KC
IEC 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 Input to
Output
3.0 KVac
Input to
Ground
2.0 KVac
Output to
Ground 1.0 KVac

LYTE II DIN Rail Power Supply
DRL-120W series / DRL-

V120W1EN

TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 03)
5
Model Number DRL-12V120W1EN DRL-24V120W1EN☐DRL-48V120W1EN
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 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)
Electrical Fast
Transient / Burst
IEC 61000-4-4 Level 3 Criteria A1)
2 kV
Surge IEC 61000-4-5 Level 4 Criteria A1)
Common Mode4): 4 kV
Differential Mode
5)
: 2 kV
Conducted IEC 61000-4-6 Level 3 Criteria A1)
150 kHz – 80 MHz, 10 Vrms
Power Frequency
Magnetic Fields
IEC 61000-4-8 Level 4 Criteria A1)
30 A/m
Voltage Dips and
Interruptions
IEC 61000-4-11 0% residual; 1 cycle, Criteria B2)
40% residual; 10 cycle, Criteria C3)
70% residual; 25 cycle, Criteria C
3)
Harmonic Current
Emission
IEC/EN/BS EN 61000-3-2, Class A
Voltage Fluctuation and
Flicker
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 A
1)
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)

LYTE II DIN Rail Power Supply
DRL-120W series / DRL-

V120W1EN

TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 03)
6
Block Diagram
DRL-☐V120W1EN☐
Device Description
1) Input terminal block connector
2) Output terminal block connector
3) DC voltage adjustment potentiometer
4) DC OK LED (Green)
5) Universal mounting rail system

LYTE II DIN Rail Power Supply
DRL-120W series / DRL-

V120W1EN

TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 03)
7
Dimensions
H x W x D: 123.6 x 30 x 116.8 mm (4.87 x 1.18 x 4.60 inch)
*Unless otherwise specified tolerance of dimension are ± 0.5 mm
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
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(+)

LYTE II DIN Rail Power Supply
DRL-120W series / DRL-

V120W1EN

TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 03)
8
Engineering Data
Output Load De-rating VS Surrounding Air Temperature
Output Load De-rating VS Input Voltage
0
10
20
30
40
50
60
70
80
90
100
110
-30 -20 -10 010 20 30 40 50 60 70
Percentage of Max Load(%)
Surrounding Air Temerature (°C)
0
10
20
30
40
50
60
70
80
90
100
110
90 100 264
Load (%)
Input Voltage (Vac)
No output power de-rating for the input
voltage from 100 Vac to 264 Vac
Note
1. 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.
2. The PSU will be bouncing and start up time
will not exceed 5s when ambient temperature
at ‐30°C.
3. If the output capacity is not reduced when the
surrounding air temperature > 50
°C, the
device 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 as
necessary to keep the device in working
condition, and require removal/re-application
of input AC voltage in order to restart.
4. In order for the device to function in the
manner intended, it is also necessary to keep
a safety distance as recommended in the
safety instructions while the device is in
operation.
5. Depending on the surrounding air temperature
a
nd output load delivered by the power
supply, the device can be very hot!
6. Need to consider power de-
rating if
surrounding Air Temperature large than 40°C
at 115 Vac and 50°C at 230 Vac.
7. If the device has to be mounted in any other
orientation, please contact [e-mail]
for more details.
Fig. 1 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
Fig. 2 De-rating for AC Input Voltage
< 100 Vac de-rate power by 1 % / Vac
―230 Vac - - - 115 Vac

LYTE II DIN Rail Power Supply
DRL-120W series / DRL-

V120W1EN

TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 03)
9
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
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
Fig. 3.2 Dismounting
To uninstall, Delta provides an easy way to pull or slide down the
latch with screw driver as shown in Fig. 3.2. Then slide the power
supply unit (PSU) in the opposite direction, release the latch and
pull out the power supply unit (PSU) from the rail.
Safety Instructions
Vertical Mounting
•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 (0.6
inch).
•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 the
terminals.
•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.

LYTE II DIN Rail Power Supply
DRL-120W series / DRL-

V120W1EN

TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 03)
10
Functions
Graph illustrating the Start-up Time, Rise Time, and Hold-up Time
Start-up Time
The time required for the output voltage to reach 90% of its final steady state set value, after the input voltage is applied.
Rise Time
The time required for the output voltage to change from 10% to 90% of its final steady state set value.
Hold-up Time
Time between the collapse of the AC input voltage, and the output falling to 95% of its steady state set value.
Inrush Current
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.
Dynamic Response
The power supply output voltage will remains within ±10% of its
steady state value, when subjected to a dynamic load from 10% to
100% of its rated current.

LYTE II DIN Rail Power Supply
DRL-120W series / DRL-

V120W1EN

TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 03)
11
Overload & Overcurrent Protections (Continuous Current)
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 more
than 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.
Short Circuit Protection (Auto-Recovery)
The power supply’s output Short Circuit Protection function also
provides protection against short circuits. When a short circuit is
applied, the output current will operate in “Hiccup mode”. The
power supply will return to normal operation after the short circuit
is removed.
Overvoltage Protection (Latch Mode)
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. Power
supply 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)
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 to
its normal operating temperature or the load is reduced as
recommended in the de-rating graph. Removal/re-application of
input AC voltage will then be required in order to restart.

LYTE II DIN Rail Power Supply
DRL-120W series / DRL-

V120W1EN

TECHNICAL DATASHEET
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (March 2022, Rev. 03)
12
Others
Attention
Delta provides all information in the datasheets on an “AS IS” basis and does not offer any kind of warranty through the information for
using 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
Taiwan
Delta 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
United Kingdom
Delta Electronics Europe Limited
1 Redwood Court, Peel Park Campus,
East Kilbride, Glasgow, G74 5PF, United Kingdom