TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
Highlights & Features
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Ultra-compact size and galvanic isolation up to 3.0 KVac
Universal AC input voltage range and full power from
-10°C to +55°C operation
Up to 89.0% efficiency
Low earth leakage current < 0.5 mA @ 264 Vac
Built-in DC OK relay contact option available
Extreme low temperature cold start at -40°C
NEC Class 2 / Limited Power Source (LPS) certified
Certified according to IEC/EN/UL 62368-1
Safety Standards
CB Certified for worldwide use
Model Number:
DRS-12V50W1N☐
Unit Weight:
0.18 kg (0.40 lb)
Dimensions (L x W x D): 75 x 30 x 89.5 mm
*This picture is for reference to DRS-12V50W series only.
(2.95 x 1.18 x 3.52 inch)
General Description
The ultra-compact and competitively priced Delta Sync DIN Rail DRS-12V50W1N☐ power supply is designed for industrial applications
requiring highly reliable power supply that must fit in a small space. The Sync series operates with universal AC input range and offers
full power up to 55°C. The output is adjustable from 12-15 volts, and can support up to 3000 microfarads of load capacitance. A green
LED indicates output is present. The design is certified according to IEC/UL 60950-1, IEC/EN/UL 62368-1 Information Technology
Equipment (ITE) and UL 508 Industrial Control Equipment (ICE). The series is also fully compliant with RoHS Directive (EU) 2015/863
for environmental protection. NEC Class 2 and Limited Power Source (LPS) approvals are available for this product.
Model Information
Sync DIN Rail Power Supply
Model Number
Input Voltage Range
Rated Output Voltage
Rated Output Current
DRS-12V50W1N☐
85-264 Vac (120-375 Vdc)
12 Vdc
4A
Model Numbering
DR
S–
12V
50W
1
N
□
DIN Rail
Product Series
S – Sync Series
Output Voltage
50W series
Single Phase
NEC Class 2
Z – Without DC OK Relay
Contact
R – With DC OK Relay
Contact
1
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (November 2021, Rev. 04)
TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
Specifications
Input Ratings / Characteristics
Nominal Input Voltage
100-240 Vac
Input Voltage Range
85-264 Vac
Nominal Input Frequency
50-60 Hz
Input Frequency Range
47-63 Hz
DC Input Voltage Range*
120-375 Vdc
Input Current
< 0.9 A @ 115 Vac, < 0.55 A @ 230 Vac
Efficiency at 100% Load
> 88% @ 115 Vac, > 89% @ 230 Vac
Max Power Dissipation
0% load
100% load
< 0.3 W @ 115 Vac, < 0.4 W @ 230 Vac
< 6 W @ 115 Vac & 230 Vac
Max Inrush Current (Cold Start)
< 25 A @ 115 Vac, < 50 A @ 230 Vac
Leakage Current
< 0.5 mA @ 264 Vac
*Fulfills test conditions for DC input. Safety approval for DC input can be obtained upon request.
Output Ratings / Characteristics**
Nominal Output Voltage
12 Vdc
Factory Set Point Tolerance
12 Vdc ± 2%
Output Voltage Adjustment Range
12-15 Vdc
Output Current
4 A (48 W max.)
Output Power
48 W
Line Regulation
< 0.5% (@ 85-264 Vac, 100% load)
Load Regulation
< 1.0% (@ 85-264 Vac, 0-100% load)
PARD*** (20 MHz)
< 50 mVpp @ > 0°C to 70°C
< 100 mVpp @ 0°C to -20°C
Rise Time
< 30ms @ nominal input (100% load)
Start-up Time
< 2,000 ms @ 115 Vac (100% load)
< 1,000 ms @ 230 Vac (100% load)
Hold-up Time
> 20 ms @ 115 Vac (100% load)
> 100 ms @ 230 Vac (100% load)
Dynamic Response
(Overshoot & Undershoot O/P Voltage)
± 5% @ 85-264 Vac input, 0-100% load
(Slew Rate: 0.1 A/μs, 50% duty cycle @ 5 Hz to 1 KHz)
Start-up with Capacitive Loads
3,000 µF Max
Functional
DC OK Relay Contact
(for DRS-12V50W1NR)
30 V / 1 A, resistive load
The relay contact are normally “ON” (closed) when the output
(Vout) is greater than 75% of its rated value and “OFF”
(opened) when the output (Vout) is less than 75% typ.
**For power de-rating from < -10°C to -20°C, and 55°C to 70°C, see power de-rating on page 3.
***PARD is measured with an AC coupling mode, 5 cm wires, and in parallel with 0.1 μF ceramic capacitor & 47 μF electrolytic capacitor.
2
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
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TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
Mechanical
Case Cover / Chassis
Plastic
Dimensions (L x W x D)
75 x 30 x 89.5 mm (2.95 x 1.18 x 3.52 inch)
Unit Weight
0.18 kg (0.40 lb)
Indicator
Green LED
Cooling System
Terminal
Wire
DC OK
Convection
Input
3 Pins (Rated 300 V/16 A)
Output
4 Pins (Rated 300 V/16 A)
Input / Output
AWG 22-12 / AWG 20-12
Mounting Rail
Standard TS35 DIN Rail in accordance with EN 60715
Noise (1 Meter from power supply)
Sound Pressure Level (SPL) < 25 dBA
Environment
Surrounding Air Temperature
Operating
Storage
-20°C to +70°C (Cold start at -40°C @ 40% load)
-40°C to +85°C
Power De-rating
-10°C to -20°C de-rate power by 2% / °C
> 55°C de-rate power by 3.33% / °C
Operating Humidity
5 to 95% RH (Non-Condensing)
Operating Altitude
Shock Test
Vibration
0 to 2,000 Meters (6,560 ft.)
Non-Operating
IEC60068-2-27, Half Sine Wave: 50 G for a duration of 11 ms;
3 times per direction, 9 times in total
Operating
IEC 60068-2-27, Half Sine Wave: 10 G for a duration of 11 ms;
1 time in X axis
Non-Operating
Operating
IEC 60068-2-6, Random: 5-500 Hz; 2.09 Grms, 20 min per axis
for all X, Y, Z directions
IEC 60068-2-6, Sine Wave: 10-500 Hz; 2 G peak; displacement
of 0.35 mm; 1 octave per min; 60 min per axis for all X, Y, Z
directions
Over Voltage Category
II
Pollution Degree
2
Protections
Overvoltage
< 18.7 V, SELV Output, Latch Mode
Overload / Overcurrent
105~120% of rated load current,
Foldback Mode (continuous current, voltage drops),
Auto-recovery when the fault is removed
Over Temperature
< 75°C Surrounding Air Temperature @ 100% load,
Latch Mode
Short Circuit
Hiccup Mode, Non-Latching
(Auto-recovery when the fault is removed)
Internal Fuse at L pin
T3.15A
Degree of Protection
IP20
Protection Against Shock
Class I with PE* connection
*PE: Primary Earth
3
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (November 2021, Rev. 04)
TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
Reliability Data
MTBF
Telcordia SR-332
MIL-HDBK-217F
Expected Cap Life Time
> 700,000 hrs
I/P: 115 Vac & 230 Vac,
O/P: 100% load, Ta: 25°C
230,000 hrs
I/P: 115 Vac & 230 Vac,
O/P: 100% load, Ta: 25°C
10 years (115 ac & 230 Vac, 50% load @ 40°C)
Safety Standards / Directives
Safety Entry Low Voltage
Electrical Safety
SELV (IEC 60950)
TUV Bauart
UL/cUL recognized
CB Scheme
UKCA
Industrial Control Equipment
Class 2 Power Supply
UL/cUL listed
UL/cUL recognized
EN 62368-1
UL 60950-1 and CSA C22.2 No. 60950-1 (File No. E191395)
UL 62368-1 and CSA C22.2 No. 62368-1 (File No. E191395)
IEC 60950-1, IEC 62368-1, Limited Power Source (LPS)
BS EN 62368-1
UL 508 and CSA C22.2 No. 107.1-01 (File No. E315335)
UL 60950-1 and CSA C22.2 No. 60950-1 (File No. E191395)
UL 62368-1 and CSA C22.2 No. 62368-1 (File No. E191395)
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 No. 1011 and
The Electromagnetic Compatibility Regulations 2016 No. 1091
Galvanic Isolation
4
Input to Output
3.0 KVac
Input to Ground
3.0 KVac
Output to Ground
0.5 KVac
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (November 2021, Rev. 04)
TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
EMC
Emissions (CE & RE)
Generic Standards: EN/BS EN 61000-6-3,
EN/BS EN 61000-6-4, CISPR 32, EN/BS EN 55032,
EN/BS EN 55011, FCC Title 47: Class B
Component Power Supply for General Use
EN 61204-3
Immunity
Generic Standards: EN/BS EN 55024, EN/BS EN 61000-6-1,
EN/BS EN 61000-6-2
Electrostatic Discharge
IEC 61000-4-2
Level 3 Criteria A1)
Air Discharge: 8 kV
Contact Discharge: 6 kV
Radiated Field
IEC 61000-4-3
Level 3 Criteria A1)
80 MHz - 1 GHz, 10V/M with 1 kHz tone / 80% modulation
1.4 GHz - 2 GHz, 3 V/M with 1 kHz tone / 80% modulation
2 GHz - 2.7 GHz, 1 V/M with 1 kHz tone / 80% modulation
Electrical Fast Transient / Burst
IEC 61000-4-4
Level 3 Criteria A1)
2 kV
Surge
IEC 61000-4-5
Level 3 Criteria A1)
Common Mode3): 2 kV
Differential Mode4): 1 kV
Conducted
IEC 61000-4-6
Level 3 Criteria A1)
150 kHz-80 MHz, 10 Vrms
Power Frequency Magnetic Fields
IEC 61000-4-8
Criteria A1)
30 A/Meter
Voltage Dips and Interruptions
IEC 61000-4-11
0% of 100 Vac, 20 ms
0% of 100 Vac, 5000 ms
40% of 100 Vac, 200 ms
70% of 100 Vac, 10 ms
70% of 100 Vac, 500 ms
0% of 240 Vac, 20 ms
0% of 240 Vac, 5000 ms
40% of 240 Vac, 200 ms
70% of 240 Vac, 500 ms
Low Energy Pulse Test (Ring Wave)
IEC 61000-4-12
Level 3 Criteria A1)
Common Mode3): 2 kV
Differential Mode4): 1 kV
Criteria A1)
Criteria B2)
Criteria B2)
Criteria A1)
Criteria B2)
Criteria A1)
Criteria B2)
Criteria A1)
Criteria A1)
Harmonic Current Emission
IEC/EN/BS EN 61000-3-2, Class A
Voltage Fluctuation and Flicker
IEC/EN/BS EN 61000-3-3
1) Criteria A: Normal performance within the specification limits
2) Criteria B: Temporary degradation or loss of function which is self-recoverable
3) Asymmetrical: Common mode (Line to earth)
4) Symmetrical: Differential mode (Line to line)
5
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (November 2021, Rev. 04)
TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
Block Diagram
DRS-12V50W1NZ
DRS-12V50W1NR
6
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (November 2021, Rev. 04)
TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
Device Description
DRS-12V50W1NZ
1)
2)
3)
4)
5)
Input terminal block connector
Output terminal block connector
DC voltage adjustment potentiometer
DC OK LED (Green)
Universal mounting system
DRS-12V50W1NR
1)
2)
3)
4)
5)
6)
7
Input terminal block connector
Output terminal block connector
DC OK relay contact
DC voltage adjustment potentiometer
DC OK LED (Green)
Universal mounting system
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (November 2021, Rev. 04)
TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
Dimensions
DRS-12V50W1NZ
L x W x D: 75 x 30 x 89.5 mm [2.95 x 1.18 x 3.52 inch]
DRS-12V50W1NR
L x W x D: 75 x 30 x 89.5 mm [2.95 x 1.18 x 3.52 inch]
8
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (November 2021, Rev. 04)
TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
Engineering Data
Output Load De-rating VS Surrounding Air Temperature
Note
1.
2.
3.
Fig. 1
De-rating for Vertical Mounting Orientation
-10°C to -20°C de-rate power by 2% / °C
> 55°C de-rate power by 3.33% / °C
4.
5.
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.
If the output capacity is not reduced when the
surrounding air temperature exceeds its
specification as defined on Page 3 under
“Environment”, the device will run into Over
Temperature Protection. When activated,
power supply will latch, 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.
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.
Depending
on
the
surrounding
air
temperature and output load delivered by the
power supply, the device can be very hot!
If the device has to be mounted in any other
orientation,
please
contact
info@deltapsu.com for more details.
Output Load De-rating VS Input Voltage
9
No output power de-rating across the entire
input voltage range
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (November 2021, Rev. 04)
TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
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. 2.1 Mounting
Fig. 2.2 Dismounting
Snap on the DIN rail as shown in Fig. 2.1:
1. Tilt the unit slightly upwards and put 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, pull or slide down the latch with screw driver as
shown in Fig. 2.2. 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
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10
ALWAYS switch mains of input power OFF before connecting and
disconnecting the input voltage to the device. 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 > 15 mm (0.59 inch) to other
units. In case the adjacent device is a heat source, the lateral
distance will be > 25 mm (0.98 inch).
Note that the enclosure of the device can become very hot depending
on the surrounding air temperature and output load connected to the
device. Risk of burns!
The main power must be turned off before connecting or disconnecting
the wires to the terminals!
DO NOT insert any objects into the device.
Dangerous voltages present for at least 5 minutes after disconnecting
all sources of power.
The power supplies unit should be installed in minimum IP54 rated
enclosure.
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 (November 2021, Rev. 04)
TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
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
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 ±5% of its
steady state value, when subjected to a dynamic load from 0% to
100% of its rated current.
11
50% duty cycle / 5 Hz to 1 KHz
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
www.DeltaPSU.com (November 2021, Rev. 04)
TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
Overload & Overcurrent Protections (Auto-Recovery)
Overvoltage Protection (Latch Mode)
The power supply’s Overload (OLP) and Overcurrent (OCP)
Protections will be activated when output current is about 4.5 A
typ. When this occurs, the VO will start to droop (refer to Ⓐ
below). Once the output voltage is below about 7 Vdc typ., the
power supply will start to operate in “Hiccup mode” (AutoRecovery mode). The power supply will recover once the fault
condition of the OCP is removed and output current is back within
the specifications.
The power supply’s overvoltage circuit will be activated when its
internal feedback circuit fails. The output voltage shall not exceed
its specifications defined on Page 3 under “Protections”. Power
supply will latch, 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 is
applied, the output current will operate in “Hiccup mode”. The
power supply will return to normal operation after the short circuit
is removed.
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, 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.
External Input Protection Device
The unit is protected with internal fuse (not replaceable) at L pin and it has been tested and approved on 20 A (UL) and 16 A (IEC)
branch circuits without additional protection device. An external protection device is only required if the supplying branch has an
ampacity greater than above. Thus, if an external protective device is necessary, or, utilized, a minimum value of 20 A B- or 13 A Ccharacteristic breaker should be used.
12
All parameters are specified at 25°C ambient and AC input unless otherwise indicated.
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TECHNICAL DATASHEET
Sync DIN Rail Power Supply
12 V 50 W 1 Phase (NEC Class 2) / DRS-12V50W1N□
Operating Mode
Parallel Operation
The power supply units (PSUs) can also be used for
parallel operation in order to increase the output power.
The difference in output voltage between the two units
must be kept to within 25 mV of each other. This
difference must be verified with the same output load
connected independently to each unit.
Parameters such as EMI, inrush current, leakage current,
PARD, start up time will be different from those on the
datasheet, when two units are connected in parallel. The
user will need to verify that any differences will still allow
the two power supplies connected in parallel will work
properly in their product/application.
Fig. 3
Parallel Operation Connection Diagram
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
13
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 (November 2021, Rev. 04)