STEP3-PS/1AC/5DC/3/PT
Power supply unit
Data sheet
109407_en_00
1
© PHOENIX CONTACT 2021-04-29
Description
The STEP POWER power supplies with Push-in connection
technology are the professional solution for intelligent
building automation. The compact devices are economical,
space-saving, and flexible in application.
Features
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Device design for use in surface-mounted or flushmounted distributors (VDE 0603-1, DIN 43871)
Energy savings with the highest level of efficiency in noload and part-load operation (Efficiency Level VI)
Space savings in the control cabinet due to the narrow
design combined with increased performance (up
to 100%)
Can be used throughout the world, thanks to the wide
range input and comprehensive international approval
package
Approval for household purposes (DIN EN 60335-1)
allows use in domestic applications
Quick and easy startup with tool-free Push-in
connection technology at a 45° angle with double
terminal points
Flexible assembly - can be snapped onto the DIN rail or
screwed onto a level surface
Technical data (short form)
Input voltage range
Mains buffering
100 V AC ... 240 V AC -15 % ... +10 %
110 V DC ... 250 V DC -20 % ... +10 %
typ. 18 ms (120 V AC)
typ. 80 ms (230 V AC)
Nominal output voltage (UN)
5 V DC
Output power (PN)
15 W
Efficiency (for nominal values)
> 82 % (120 V AC)
> 82.5 % (230 V AC)
Nominal output current (IN)
Efficiency Level
Residual ripple
MTBF (IEC 61709, SN 29500)
3A
VI
typ. 150 mVPP
> 2746000 h (25 °C)
> 1439000 h (40 °C)
> 913000 h (50 °C)
Ambient temperature (operation)
-10 °C ... 70 °C (Derating: > 50 °C; 2 %/K)
Dimensions W x H x D
18 x 90 x 61 mm
Startup type tested
Horizontal pitch ( DIN 43880 )
Weight
-25 °C
1 Div.
70 g
All technical specifications are nominal and refer to a room temperature of 25 °C and 70% relative humidity at
100 m above sea level.
STEP3-PS/1AC/5DC/3/PT
2
Table of contents
1
Description ..................................................................................................................................1
3
Ordering data ..............................................................................................................................4
2
4
5
6
Table of contents......................................................................................................................... 2
Technical data.............................................................................................................................4
Safety and installation notes...................................................................................................... 11
High-voltage test (HIPOT) ......................................................................................................... 12
6.1
6.2
6.3
High-voltage dielectric test (dielectric strength test) .....................................................................................12
High-voltage dielectric test during the manufacturing process......................................................................12
High-voltage dielectric test performed by the customer ................................................................................12
6.3.1 Performing high-voltage testing.........................................................................................................12
7
Design ....................................................................................................................................... 13
8
Mounting/remove .................................................................................................................................................15
7.1
7.2
7.3
7.4
Rating plate ..................................................................................................................................................13
Device connections and functional elements................................................................................................13
Block diagram...............................................................................................................................................14
Device dimensions .......................................................................................................................................15
8.1
8.2
8.3
8.4
8.5
Convection ...................................................................................................................................................15
Mounting position .........................................................................................................................................16
Installation height..........................................................................................................................................16
Keep-out areas .............................................................................................................................................16
Mounting the power supply unit ....................................................................................................................17
8.5.1 Mounting on a DIN rail (integrated snap-on foot) ...............................................................................17
8.5.2 Screw fixing to the mounting surface (mounting flanges) ..................................................................17
Removing the power supply unit...................................................................................................................18
8.6.1 DIN rail end mounting (integrated snap-on foot)................................................................................18
8.6.2 Removal from the mounting surface (mounting flanges) ...................................................................18
8.6
9
Device connection terminal blocks .................................................................................................................19
9.1
9.2
9.3
AC input terminal blocks ...............................................................................................................................19
Primary side connection and fuse protection ................................................................................................19
9.2.1 1AC supply network ..........................................................................................................................19
9.2.2 3AC supply network ..........................................................................................................................19
9.2.3 DC supply network ............................................................................................................................20
DC output terminal blocks.............................................................................................................................20
9.3.1 Wiring principle for DC output terminals ............................................................................................20
9.3.2 Protection of the secondary side .......................................................................................................20
10 Function elements ..................................................................................................................... 21
10.1
Display element – DC OK LED .....................................................................................................................21
11 Output characteristic curves .............................................................................................................................21
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12 Connection versions ..................................................................................................................22
12.1
12.2
12.3
Increasing power .......................................................................................................................................... 22
12.1.1 Series operation................................................................................................................................ 22
12.1.2 Parallel operation .............................................................................................................................. 22
Redundant operation.................................................................................................................................... 22
Fundamental prerequisites for parallel operation (power increase, redundancy operation) ......................... 23
13 Derating .....................................................................................................................................23
13.1
13.2
13.3
Ambient temperature.................................................................................................................................... 23
Installation height ......................................................................................................................................... 23
Position-dependent derating ........................................................................................................................ 24
13.3.1 Normal mounting position ................................................................................................................. 24
13.3.2 Rotated mounting position 90° Z-axis ............................................................................................... 24
13.3.3 Rotated mounting position 180° Z-axis ............................................................................................. 25
13.3.4 Rotated mounting position 270° Z-axis ............................................................................................. 25
13.3.5 Rotated mounting position 90° X-axis ............................................................................................... 26
13.3.6 Rotated mounting position 270° X-axis ............................................................................................. 26
14 Application example ..................................................................................................................27
14.1
Power supply in a surface-mounted or flush-mounted distributor ................................................................. 27
15 Disposal and recycling ....................................................................................................................................... 27
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STEP3-PS/1AC/5DC/3/PT
3
Ordering data
Description
Type
Order No.
Pcs./Pkt.
Pcs./Pkt.
Primary-switched power supply unit, STEP POWER,
Push-in connection, DIN rail mounting, input: 1-phase,
output: 5 V DC / 3 A
STEP3-PS/1AC/5DC/3/PT
1170954
Accessories
Type
Order No.
Redundancy module, 5 ... 24 V DC, 2x 5 A, 1x 10 A
STEP-DIODE/5-24DC/2X5/
1X10
2868606
1
1
The range of accessories is being continuously extended. The current range of accessories can be found in
the download area for the product.
4
Technical data
Input data
Unless otherwise stated, all data applies for 25°C ambient temperature, 230 V AC input voltage, and nominal
output current (IN).
Input voltage range
Frequency range (fN)
Typical national grid voltage
Network type
Current consumption
Discharge current to PE
Mains buffering time
Switch-on time
Inrush current
Inrush current integral (I2t)
100 V AC ... 240 V AC -15 % ... +10 %
110 V DC ... 250 V DC -20 % ... +10 %
50 Hz ... 60 Hz ±10 %
120 V AC
230 V AC
Star network (TN, TT, IT (PE))
0.3 A (100 V AC)
0.14 A (240 V AC)
0.17 A (110 V DC)
0.07 A (250 V DC)
< 0.25 mA
typ. 18 ms (120 V AC)
typ. 80 ms (230 V AC)
typ. 2 s
typ. 30 A (25 °C)
typ. 0.14 A2s
Device mains fuse , internal (device protection), slow-blow 1.25 A
During the first few microseconds, the current flow into the filter capacitors is excluded.
The SCCR (short-circuit current rating) value of the power supply unit corresponds to the SCCR value of the
backup fuse.
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STEP3-PS/1AC/5DC/3/PT
Input protection , AC/DC ( to be connected externally upstream )
Input current IIn
Input protection
Neozed fuse
or equivalent
Circuit breaker
Characteristics
A
6A
B
-
8A
-
10 A
-
13 A
-
16 A
-
20 A
-
C
D
K
gG
-
Protective circuit
Type of protection
Power switch
≤ 13 x IIn
(maximum magnetic tripping)
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-
-
-
-
-
-
-
-
Transient surge protection
Protective circuit/component
Varistor
Electric strength of the insulation
Housing
Input
Output
L 1.1
1.2
2.1 +
2.2
A
1.3
N 1.4
2.3
2.4
-
A
Type test (IEC/EN 61010-1:2010, section 6.8)
4 kV AC
Production test
3.75 kV AC
Power Factor
POWER factor
0,6
0,55
0,5
Ĵ
0,45
ĵ
0,4
Ĵ = UIn: 120 V AC/UOut: 5 V DC
ĵ = UIn: 230 V AC/UOut: 5 V DC
0,35
0,3
0
0,5
1
1,5
2
2,5
3
IOut [A]
Crest factor
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120 V AC
typ. 3
230 V AC
typ. 4.2
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STEP3-PS/1AC/5DC/3/PT
IIN [A]
Input current vs. output current
0,3
0,25
Ĵ
0,2
0,15
ĵ
0,1
Ĵ = UIn: 120 V AC/UOut: 12 V DC
ĵ = UIn: 230 V AC/UOut: 12 V DC
0,05
0
0
0,5
1
1,5
2
2,5
3
3,5
IOut [A]
Connection data input
Connection method
Push-in connection
Stripping length
10 mm
Conductor cross section flexible
0.2 mm² ... 2.5 mm²
Conductor cross section solid
Flexible conductor cross section (ferrule with plastic
sleeve)
Flexible conductor cross section flexible (ferrule, w/o
plastic sleeve)
Conductor cross section AWG (Cu)
Output data
Nominal output voltage (UN)
0.2 mm² ... 2.5 mm²
0.2 mm² ... 1 mm²
0.5 mm² ... 2.5 mm²
24 ... 14
5 V DC
Nominal output current (IN)
3A
Short-circuit-proof
yes
Control deviation
No-load proof
Residual ripple
Connection in parallel
< 1.5 % (Static load change 10 % ... 90 %)
< 5 % (Dynamic load change 10 % ... 90 %, (10 Hz))
< 0.1 % (change in input voltage ±10 %)
yes
typ. 150 mVPP
yes, for increasing power and redundancy with diode
Connection in series
yes, for increased efficiency
Protection against overvoltage at the output (OVP)
< 10 V DC
Feedback voltage resistance
Rise time
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≤ 10 V DC
typ. 100 ms (UOut = 10 % ... 90 %)
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STEP3-PS/1AC/5DC/3/PT
Connection data output
Connection method
Push-in connection
Stripping length
10 mm
Conductor cross section flexible
0.2 mm² ... 2.5 mm²
Conductor cross section solid
0.2 mm² ... 2.5 mm²
Flexible conductor cross section (ferrule with plastic
sleeve)
Flexible conductor cross section flexible (ferrule, w/o
plastic sleeve)
Conductor cross section AWG (Cu)
LED signaling
UOut > 0.9 x UN (UN = 5 V DC)
0.2 mm² ... 1 mm²
0.5 mm² ... 2.5 mm²
24 ... 14
LED lights up green
UOut < 0.9 x UN (UN = 5 V DC)
LED off
Reliability
230 V AC
MTBF (IEC 61709, SN 29500)
> 2746000 h (25 °C)
> 1439000 h (40 °C)
> 913000 h (50 °C)
General data
Degree of protection
IP20
Protection class
II (in closed control cabinet)
Flammability rating UL 94
V0 (Housing, terminal blocks, base latches)
Efficiency Level
VI
Housing material
Polycarbonate
Foot latch material
Polyamid
Dimensions (W x H x D)
18 x 90 x 61 mm
Device depth (DIN rail mounting)
55 mm
Horizontal pitch
1 Div. (DIN 43880)
Weight
70 g
Power dissipation
No load
230 V AC
< 3.4 W
< 3.2 W
120 V AC
230 V AC
< 0.1 W
Nominal load
Efficiency
Eta [%]
120 V AC
> 82 % (120 V AC)
90
< 0.1 W
> 82.5 % (230 V AC)
85
80
Ĵ
75
ĵ
70
65
60
Ĵ = UIn: 120 V AC/UOut : 5 V DC
ĵ = UIn: 230 V AC/UOut : 5 V DC
0,5
1
1,5
2
2,5
3
IOut [A]
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Ambient conditions
Ambient temperature (operation)
-10 °C ... 70 °C (Derating: > 50 °C; 2 %/K)
The ambient temperature (operation) refers to IEC 61010 surrounding air temperature.
Ambient temperature (start-up type tested)
-25 °C
Ambient temperature (storage/transport)
-40 °C ... 85 °C
Installation height
≤ 4000 m (> 2000 m, Derating: 10 %/1000 m)
Max. permissible relative humidity (operation)
Vibration (operation)
Shock
Degree of pollution
Climatic class
Overvoltage category
EN 61010-1
EN 62477-1
Standards/specifications
Electrical safety
≤ 95 % (at 25 °C, non-condensing)
< 15 Hz, amplitude ±2.5 mm (according to IEC 60068-2-6)
15 Hz ... 150 Hz, 2.3g, 90 min.
18 ms, 30g, in each space direction (according to IEC 600682-27)
2
3K3 (EN 60721)
II (≤ 4000 m)
III (≤ 2000 m)
IEC 61010-1 (SELV)
Safety extra-low voltage
IEC 61010-1 (SELV) IEC 61010-2-201 (PELV)
Low-voltage power supplies, DC output
EN 61204-3
Safe isolation
Safety requirements for electrical equipment for
measurement, control, and laboratory use
IEC 61558-2-16
IEC 61010-1
Safety of electrical devices for household use and similar DIN EN 60335-1
purposes
Electric vehicle conductive charging system - Part 21-2:
EMC requirements for off board electric vehicle charging
systems
Conformance/Approvals
UL
Temperature class (ANSI/UL 121201)
Temp code
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IEC 61851-21-2 (Class B)
UL 1310 Class 2 Power Units
UL/C-UL Listed UL 61010-1
UL/C-UL Listed UL 61010-2-201
UL/C-UL Listed ANSI/UL 121201 Class I, Division 2, Groups A,
B, C, D (Hazardous Location)
T4 (-10...+70 °C; >50 °C, Derating: 2 %/K)
Current approvals/permissions for the product can be found in the download area under
phoenixcontact.net/products
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Electromagnetic compatibility
Conformance with EMC Directive 2014/30/EU
Noise emission according to EN 61000-6-3 (residential and commercial) and EN 61000-6-4 (industrial)
CE basic standard
Conducted noise emission EN 55016
Minimum normative
requirements
Higher requirements in
practice (covered)
EN 61000-6-4 (Class A)
EN 61000-6-3 (Class B)
not required
0 kHz ... 2 kHz
EN 61000-6-4 (Class A)
Noise emission EN 55016
Harmonic currents EN 61000-3-2
not required
Flicker EN 61000-3-3
EN 61000-6-2:2005
CE basic standard
Electrostatic discharge EN 61000-4-2
Housing contact discharge
Housing air discharge
Electromagnetic HF field EN 61000-4-3
Comments
Frequency range
EN 61000-6-3 (Class B)
EN 61000-3-2 (Class A)
Minimum normative
requirements of EN 610006-2 (CE)
(immunity for industrial
environments)
Higher requirements in
practice (covered)
4 kV (Test Level 2)
6 kV (Test Level 3)
Criterion B
Criterion A
8 kV (Test Level 3)
80 MHz ... 1 GHz
8 kV (Test Level 3)
80 MHz ... 1 GHz
Test field strength
10 V/m (Test Level 3)
10 V/m (Test Level 3)
Test field strength
3 V/m (Test Level 2)
10 V/m (Test Level 3)
Frequency range
Fast transients (burst) EN 61000-4-4
Comments
1.4 GHz ... 6 GHz
Criterion A
1 GHz ... 6 GHz
Criterion A
Input asymmetrical 2 kV (Test Level asymmetrical 4 kV (Test Level
3)
4)
Output asymmetrical 1 kV (Test Level asymmetrical 2 kV (Test Level
2)
3)
Surge voltage load (surge) EN 61000-4-5
Comments
Criterion B
Criterion A
Input symmetrical 1 kV (Test Level symmetrical 2 kV (Test Level
3)
4)
asymmetrical 2 kV (Test Level asymmetrical 4 kV (Test Level
3)
4)
Output symmetrical 0.5 kV (Test Level symmetrical 1 kV (Test Level
3)
2)
asymmetrical 1 kV (Test Level asymmetrical 2 kV (Test Level
3)
2)
Comments
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Criterion B
Criterion A
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STEP3-PS/1AC/5DC/3/PT
EN 61000-6-2:2005
CE basic standard
Conducted interference EN 61000-4-6
Input/output
Frequency range
Voltage
Voltage dips EN 61000-4-11
Input voltage ( 230 V AC , 50 Hz )
Comments
Criterion B
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asymmetrical
0.15 MHz ... 80 MHz
0.15 MHz ... 80 MHz
Criterion A
Criterion A
10 V (Test Level 3)
10 V (Test Level 3)
70 % , 25 periods ( Class 3 )
Voltage dip
40 % , 10 periods ( Class 3 )
40 % , 10 periods ( Class 3 )
Voltage dip
0 % , 1 period ( Class 3 )
0 % , 1 period ( Class 3 )
Comments
Criterion C
asymmetrical
70 % , 25 periods ( Class 3 )
Comments
Criterion A
Higher requirements in
practice (covered)
Voltage dip
Comments
Key
Minimum normative
requirements of EN 610006-2 (CE)
(immunity for industrial
environments)
Criterion C
Criterion C
Criterion B
Criterion A
Criterion A
Criterion A
Normal operating behavior within the specified limits.
Temporary impairment to operational behavior that is corrected by the device itself.
Temporary adverse effects on the operating behavior, which the device corrects
automatically or which can be restored by actuating the operating elements.
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STEP3-PS/1AC/5DC/3/PT
5
Safety and installation notes
Safety notes and warning instructions
Symbols used
WARNING: Danger to life by electric shock!
Instructions and possible hazards are indicated by
corresponding symbols in this document.
This is the safety alert symbol. It is used to alert
you to potential personal injury hazards. Obey all
safety measures that follow this symbol to avoid
possible personal injuries.
There are different categories of personal injury that are
indicated by a signal word.
–
–
–
–
WARNING
NOTE
This indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
This indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
The following symbols are used to indicate potential
damage, malfunctions, or more detailed sources of
information.
NOTE
This symbol together with the signal word NOTE
and the accompanying text alert the reader to a
situation which may cause damage or malfunction
to the device, hardware/software, or surrounding
property.
This symbol and the accompanying text provide
the reader with additional information or refer to
detailed sources of information.
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109407_en_00
Only skilled persons may install, start up, and operate
the device.
Never carry out work when voltage is present.
Establish connection correctly and ensure protection
against electric shock.
Cover termination area after installation in order to avoid
accidental contact with live parts (e. g., installation in
control cabinet).
Observe the national safety and accident prevention
regulations.
Assembly and electrical installation must correspond to
the state of the art.
The power supply is a built-in device and is designed for
mounting in a control cabinet.
The IP20 degree of protection of the device is intended
for use in a clean and dry environment.
Observe mechanical and thermal limits.
Horizontal mounting position (normal mounting
position)
Mount the power supply unit in the standard installation
position. Position of the L/N connection terminal blocks
at bottom.
Ensure that the primary-side wiring and secondary-side
wiring are the correct size and have sufficient fuse
protection.
For the connection parameters for wiring the power
supply, such as the required stripping length with and
without ferrule, refer to the technical data section.
Use copper cables for operating temperatures of
75 °C (ambient temperature 55 °C)
90 °C (ambient temperature 75 °C).
The power supply is approved for the connection to TN,
TT and IT power grids (star networks) with a maximum
phase-to-phase voltage of 240 V AC
Protect the device against foreign bodies penetrating it,
e.g., paper clips or metal parts.
The power supply is maintenance-free. Repairs may
only be carried out by the manufacturer. The warranty
no longer applies if the housing is opened.
The power supply may only be used for its intended use.
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STEP3-PS/1AC/5DC/3/PT
6
High-voltage test (HIPOT)
This protection class II power supply is subject to the Low
Voltage Directive and is factory tested. During the HIPOT
test (high-voltage test), the insulation between the input
circuit and output circuit is tested for the prescribed electric
strength values, for example. The test voltage in the highvoltage range is applied at the input and output terminal
blocks of the power supply. The operating voltage used in
normal operation is a lot lower than the test voltage used.
High-voltage tests can be performed as
described.
6.3.1
Performing high-voltage testing
If high-voltage testing of the control cabinet or the power
supply as a stand-alone component is planned during final
inspection and testing, the following features must be
observed.
– The power supply wiring must be implemented as
shown in the wiring diagram.
– The maximum permissible test voltages must not be
exceeded.
Avoid unnecessary loading or damage to the power supply
due to excessive test voltages.
For the relevant applicable test voltages and
insulation distances, refer to the corresponding
table (see technical data: electric strength of the
insulation section).
The test voltage should rise and fall in ramp form.
The relevant rise and fall time of the ramp should
be at least two seconds.
6.1
High-voltage dielectric test (dielectric strength
test)
Figure 1
In order to protect the user, power supplies (as electric
components with a direct connection to potentially
hazardous voltages) are subject to more stringent safety
requirements. For this reason, permanent safe electrical
isolation between the hazardous input voltage and the
touch-proof output voltage as safety extra-low voltage
(SELV) must always be ensured.
6.3
High-voltage dielectric test performed by the
customer
Apart from routine and type tests to guarantee electrical
safety, the end user does not have to perform another highvoltage test on the power supply as an individual
component. According to EN 60204-1 (Safety of machinery
- Electrical equipment of machines) the power supply can be
disconnected during the high-voltage test and only installed
once the high-voltage test has been completed.
109407_en_00
Ord.No.1170954
5V 3A
DC OK
STEP POWER
HV
/=
Input 1AC
1.1 L 1.3 N
1.2 L 1.4 N
High-voltage dielectric test during the
manufacturing process
During the power supply manufacturing process, a highvoltage test is performed as part of the dielectric test in
accordance with the specifications of IEC/UL/EN 61010-1.
Routine manufacturing tests are inspected regularly by a
certification authority.
3
2.1 + 2.3 2.2 + 2.4 Output DC
In order to ensure permanent safe isolation of the AC input
circuit and DC output circuit, high-voltage testing is
performed as part of the safety approval process (type test)
and manufacturing (routine test).
6.2
Potential-related wiring for the high-voltage
test
2
1
Key
No. Designation
1
2
3
Color coding
AC input circuit Red
High-voltage
-tester
DC output circuit Blue
Potential levels
Potential 1
-Potential 2
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7
Design
7.1
Rating plate
7.2
In accordance with the German Product Safety Law
(ProdSG) it is only permissible to make such products
available on the market if they meet certain safety
standards. It must be ensured at all times that users are not
exposed to hazards.
In accordance with ProdSG, every device must therefore be
fitted with a rating plate. All relevant information on the safe
use of the device must also be included.
The power supply device rating plate is located on
the right-hand side of the housing (as viewed from
the front).
The connection tags are split into the following connection
levels:
Connection Description
level
1.x
Input
2.x
Output
Figure 3
Location of functional elements and device
connections
1
2
Rating plate information
1
PHOENIX CONTACT GmbH & Co. KG
Flachsmarktstraße 8
32825 Blomberg
Germany
www.phoenixcontact.com
Order-No.:
Sno.: AAAAAAARRYYWWXSSSS
6
5
Read manual No.
xxxxxxx before
connecting to mains
Lire manual No.
xxxxxxx avant de
de raccorder au réseau
Made in Vietnam
2
3
4
5
6
7
109407_en_00
2.3
2.4
-
3
5V 3A
4
DC OK
5
Input 1AC
1.1 L
1.2 L
1.3 N
1.4 N
4
6
Key
No.
1
2
3
Ord.No.1170954
Input:
Output:
2.1 +
2.2 +
Output DC
YYYY/MM/DDX
7
Device connections are labeled with connection tags to
ensure clear and definitive identification.
STEP POWER
Figure 2
Device connections and functional elements
Designation
Identification of the provider
Date of manufacture
Bar code and serial number for device identification
Designation of product-related device documentation
Device approvals
Ambient conditions
Device connection data
2
Key
No. Designation
1
2
3
4
5
6
Connection terminal block output
voltage: Output DC +/Mounting flange for wall mounting
(back of device)
Signaling DC OK LED
Integrated snap-on foot for DIN rail
mounting (back of device)
QR code web link
Connection terminal block input voltage: Input L/N
Connection
labeling
2.1 ... 2.4
----1.1 ... 1.4
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STEP3-PS/1AC/5DC/3/PT
7.3
Block diagram
Figure 4
Block diagram
Input AC
L
1.1
1.2
N
1.3
1.4
Output DC
Filter
Filter
Functions
UVP
OVP
2.1
2.2
+
2.3
2.4
-
User Interface
OTP
OCP
SCP
DC OK
Key
Symbol
Filter
Designation – Input AC, Output DC
Input fuse, internal device protection
EMC filter
Symbol
UVP
OVP
Rectification
Switching transistor
OTP
Transmitter with electrical isolation
OCP
Smoothing capacitor
SCP
Control equipment
Symbol
DC OK
109407_en_00
Designation – Functions
Undervoltage protection protects the AC
input of the power supply against damage in
the event of an AC undervoltage.
Overvoltage protection protects the DC output of the power supply and the connected
load against damage in the event of an overvoltage
Overtemperature protection protects the
power supply against damage in the event of
impermissibly high intrinsic external heating.
Overcurrent protection protects the DC output of the power supply against damage in
the event of an impermissibly high current
load.
Short-circuit protection protects the DC output of the power supply against damage in
the vent of an output-side short circuit.
Designation – User interface
DC OK LED, indicates the operating status of
the power supply
PHOENIX CONTACT
14/27
STEP3-PS/1AC/5DC/3/PT
7.4
Device dimensions
Figure 5
Device dimensions (dimensions in mm)
18
8
The fanless convection-cooled power supply can be
snapped onto 35 mm DIN rails with a top hat profile (TH 357.5 / TH 35-15) in accordance with EN 60715.
8.1
5V 3A
90
DC OK
STEP POWER
Ord.No.1170954
45
2.1 + 2.3 2.2 + 2.4 Output DC
Mounting/remove
Convection
To ensure sufficient convection, a minimum clearance is
necessary between the power supply and above/below the
installed devices. The minimum clearances are rated based
on the standard mounting position with nominal power
supply operation (see section: Restricted areas).
Figure 7
Schematic diagram of the convection cooling
Input 1AC
1.1 L 1.3 N
1.2 L 1.4 N
Device dimensions (dimensions in mm)
61
STEP POWER
50
2.1
2.2+ 2
Ou + 2 .3 –
tpu .4 –
tD
C
Ord.No.1170954
Figure 6
5V
3A
DC
OK
.4
N
44
55
109407_en_00
PHOENIX CONTACT
15/27
STEP3-PS/1AC/5DC/3/PT
Mounting position
The specified technical data for the power supply is based
on nominal operation in the standard mounting position. Any
different technical data based on deviating mounting
positions or other ambient conditions is labeled accordingly
(see section: Derating).
Keep-out areas
Figure 9
Device dimensions and minimum keep-out
areas (in mm)
18
Power supply installed in the normal mounting
position
75
Figure 8
8.4
30
8.2
STEP POWER
Ord.No.1170954
2.1
2.2+ 2
Ou + 2 .3 –
tpu .4 –
tD
C
Ord.No.1170954
Input 1AC
1.1 L 1.3 N
1.2 L 1.4 N
5V
3A
DC
OK
.4
8.3
5V 3A
DC OK
STEP POWER
150
2.1 + 2.3 2.2 + 2.4 Output DC
N
Installation height
You can operate the power supply without power limitations
up to an installation altitude of 2000 m. For altitudes higher
than 2000 m, different specifications apply due to the
differing air pressure and the reduced convection cooling
associated with this (see section: Derating).
109407_en_00
PHOENIX CONTACT
16/27
STEP3-PS/1AC/5DC/3/PT
8.5.2
8.5
Mounting the power supply unit
8.5.1
Mounting on a DIN rail (integrated snap-on foot)
To mount the power supply on a DIN rail, proceed as follows:
1. In the standard mounting position, the power supply is
mounted on the DIN rail from the front. When doing so,
ensure that the snap-on foot rests completely on the
DIN rail (A).
2. Then push the power supply onto the DIN rail until the
snap-on foot audibly snaps into place (B).
3. Check that the power supply is securely attached to the
DIN rail.
Figure 10
Snapping the power supply onto the DIN rail
Screw fixing to the mounting surface (mounting
flanges)
To mount the power supply with screws directly on the
mounting surface, proceed as follows:
1. Two M4 cylinder screws (DIN EN ISO 1207) are
needed to screw-mount the power supply.
2. Drill two fixing holes with M4 threads and a hole
clearance of 98 mm in the mounting location.
3. Push the mounting flanges (orange base latch) for fixing
to the mounting surface upwards and downwards out of
the housing base.
4. Screw the power supply onto the mounting surface
using the two M4 cylinder screws.
5. Check that the power supply is securely attached to the
mounting surface.
Figure 11
Screw fixing of the power supply to the
mounting surface
M4
A
B
B
98
PUSH
Click
M4
The power supply housing has been designed so
that it can also be mounted and operated in a
surface-mounted or flush-mounted distributor in
accordance with VDE 0603-1 or DIN 43871. The
power supply is mounted via the integrated snapon foot directly onto the DIN rail of the surfacemounted or flush-mounted distributor (see
section: Application example).
109407_en_00
A
PUSH
PHOENIX CONTACT
17/27
STEP3-PS/1AC/5DC/3/PT
8.6
Removing the power supply unit
8.6.1
DIN rail end mounting (integrated snap-on foot)
To remove the power supply from the DIN rail, proceed as
follows:
1. Take a suitable screwdriver and insert it into the
interlock opening on the snap-on foot.
2. Release the latch by levering the screwdriver
downwards (A).
3. Carefully swivel the power supply downwards (B) and
let the interlock slide back into the starting position.
4. Then lift the power supply from the DIN rail.
Figure 12
Removing the power supply from the DIN rail
A
8.6.2
Removal from the mounting surface (mounting
flanges)
WARNING: Danger due to short circuit
When unscrewing and removing the M4 cylinder
screws, ensure that none fall into your application.
To remove the power supply from the mounting surface,
proceed as follows:
1. Unscrew one of the two M4 cylinder screws used to
attach the power supply.
2. Remove the M4 cylinder screw.
3. Unscrew the second M4 cylinder screw and then
remove the power supply.
Figure 13
Loosening the screw fixing of the power supply
B
109407_en_00
PHOENIX CONTACT
18/27
STEP3-PS/1AC/5DC/3/PT
9
Device connection terminal blocks
The front-mounted AC input terminal blocks and DC output
terminal blocks of the power supply feature Push-in
connection technology. No tools are necessary for wiring
the primary and secondary side connection terminal blocks.
For the necessary connection parameters for the
connection terminal blocks, refer to the technical
data section.
9.1
9.2
Primary side connection and fuse protection
9.2.1
1AC supply network
The installation of the power supply must conform to the
regulations of EN 61010. It must be possible to switch the
power supply off using a suitable disconnection device
outside of the power supply. The line protection on the
primary side is suitable for this (see section: Technical data).
Figure 15
AC input terminal blocks
TT / TN / IT (PE)
TN-C
Input 1AC
Input 1AC
The power supply is designed such that it can be operated
on single-phase AC supply systems or on two phase
conductors of three-phase systems. Here, the star supply
system supports various supply system configurations,
for example TT, TN, and IT systems.
The power supply is connected on the primary side via the
Input AC connection terminal blocks (connection level 1.x,
input).
The AC input terminal points and DC output terminal points
of the Push-in connection terminal blocks are aligned at a
45° angle. This increases the number of non-isolated
terminal points. No tools are necessary for wiring the
primary and secondary side connection terminal blocks.
1.1L
1.2L
1.3N
1.4N
L1
L2
L3
N
PE
PEN
9.2.2
3AC supply network
DANGER: Hazardous voltage
When operating the power supply on a threephase system, observe the maximum permissible
phase-to-phase voltage (see section: Technical
data).
The primary-side fuse protection in two-phase
operation must be cover all poles.
Position of the AC input terminal blocks
Figure 16
2.1 + 2.3 2.2 + 2.4 Output DC
Schematic diagram, two-phase fuse protection
TT / TN / IT (PE)
TN-C
Input 2AC
Input 2AC
1.1L
1.2L
1.1L
1.2L
1.3N
1.4N
1.3N
1.4N
5V 3A
DC OK
STEP POWER
Ord.No.1170954
1.1L
1.2L
1.3N
1.4N
L1
L2
L3
N
PE
The power supply is approved for connection to
TN, TT, and IT power grids with a maximum
phase-to-phase voltage of 240 V AC.
Figure 14
Schematic diagram, single-phase fuse
protection
Input 1AC
1.1 L 1.3 N
1.2 L 1.4 N
109407_en_00
L1
L2
L3
N
PE
L1
L2
L3
PEN
N
PE
PHOENIX CONTACT
19/27
STEP3-PS/1AC/5DC/3/PT
9.2.3
DC supply network
DANGER: Hazardous voltage
When operating the power supply on a DC voltage
system, observe the maximum permissible input
voltage (see section: Technical data).
The primary-side fuse protection in DC operation
must cover all poles.
9.3.1
Wiring principle for DC output terminals
The power supply has two separate connection terminal
blocks with positive and negative potentials for supplying
DC loads. Connect the DC loads to be supplied to these
connection terminal blocks.
Figure 19
Wiring principle for DC output terminal blocks
R Load
NOTE: Damage possible if an incorrect fuse is
used
In DC operation, only use fuses that are approved
for DC voltages.
Figure 17
Schematic diagram, two-phase fuse protection
Input DC
1.1L
1.2L
1.3L
1.4L
+
9.3
DC output terminal blocks
Connect the DC load to be supplied to the Output DC
connection terminal blocks (connection level 2.x, output). By
default, the power supply is preset to a nominal output
voltage of 5 V DC. The level of the DC output voltage cannot
be changed.
Figure 18
2.1+
2.2+
2.3 –
2.4 –
Output DC
9.3.2
Protection of the secondary side
The power supply is electronically short-circuit-proof and
no-load-proof. In the event of an error, the output voltage is
limited
If sufficiently long connecting cables are used,
fuse protection does not have to be provided for
each individual load.
Position of DC output terminals
5V 3A
DC OK
STEP POWER
Ord.No.1170954
2.1 + 2.3 2.2 + 2.4 Output DC
Input 1AC
1.1 L 1.3 N
1.2 L 1.4 N
109407_en_00
PHOENIX CONTACT
20/27
STEP3-PS/1AC/5DC/3/PT
Function elements
The functional elements of the power supply are located on
the front of the housing of the power supply and are
categorized as follows:
– Display element
10.1
Display element – DC OK LED
A DC OK LED is available for preventive function monitoring
of the power supply. Through various different signals, the
DC OK LED provides information on the operating status of
the power supply.
The possible DC OK statuses are to be found in the
following table:
DC OK LED
Description
Primary-side AC supply is not available
or too low.
Power supply in overload operation
UOUT 0.9 x UN (UN = 5 V DC)
= off, = on (green)
Figure 20
11
Output characteristic curves
In normal operation, the power supply supplies the output
power in accordance with the device nominal data. If the DC
output current supplying the loads increases to an
impermissibly high level due to a fault, the power supply
disconnects the DC output. The power supply remains in
operation, despite the functional disturbance.
The green DC OK LED is deactivated (see section: Function
elements, display element – DC OK LED).
In HICCUP mode, the power supply attempts to return to the
conditions present prior to the detected current increase
cyclically. This procedure is repeated until the cause of the
current increase due to overload or short circuit has been
remedied. The power supply then automatically switches
back to normal operation. The DC OK LED is reactivated.
Figure 21
UOut [V]
10
Schematic diagram, HICCUP mode in the
event of overload
UN
UN
2
50%
DC OK LED
0
IN
IOut [A]
I Out [A]
DC OK
I SC
T1
T2
T1
0
109407_en_00
T2
t [s]
Marking
ISC
Value
ca. 5,5 A
T1
10 ms
T2
350 ms
Description
Maximum output current
(short-circuit current) in
HICCUP mode
Pulse time (ON) in HICCUP mode
Pause time (OFF) in HICCUP mode
PHOENIX CONTACT
21/27
STEP3-PS/1AC/5DC/3/PT
12
Connection versions
12.1.2 Parallel operation
Depending on how you intend to use your power supply,
there are different ways of connecting the DC output side.
A distinction is made between the following modes of use:
– Power increase
– Redundancy operation
12.1
Increasing power
When n power supply DC outputs are connected in parallel,
the output current is increased to n x IN. Parallel connection
for increased power is used when extending existing
systems. If the individual power supply does not cover the
current consumption of the most powerful load, parallel
connection of power supplies is recommended.
Figure 23
Schematic diagram, power increase in parallel
operation
Depending on the respective mode of use, the power is
increased either via the series- or parallel connection of two
power supplies.
R Load
12.1.1 Series operation
To increase the DC output power in dependence of the
output voltage, connect two power supplies in series
operation. Only use power supplies of the same type and
performance class with identical configurations.
Depending on the common output-side ground reference
point of the power supplies, the following DC output voltage
potentials are possible:
– +10 V DC
– -10 V DC
– ±5 V
Figure 22
Schematic diagram, power increase in series
operation
+10 V DC
R Load
+
+
-
Output DC
-
+
+
-
Output DC
12.2
-
Output DC
Redundant operation
Redundant circuits are suitable for the DC supply of systems
and system parts which place particularly high demands on
operational safety. If the DC load is to be supplied with 1+1
redundancy, two power supplies of the same type and
performance class with identical configurations must be
used.
In the event of an error, it must be ensured that one of the
power supplies is able to provide the total required output
power for the DC load to be supplied. The output power
required for normal operation is thus provided by two power
supplies connected in parallel on the output side. In normal
operation, each of the two power supplies will be utilized by
up to 50%.
A suitable selection of redundancy modules
(active or passive) is to be found in the section:
Ordering data, Accessories.
Output DC
-10 V DC
RLoad
Figure 24
+
+
-
Schematic diagram, 1+1 redundancy with
redundancy module (active or passive)
-
R Load
Output DC
Output DC
+
-
Output DC
+5 V DC
-5 V DC
R Load
R Load
+
-
+
-
-
Output DC
Output DC
109407_en_00
+
Output DC
PHOENIX CONTACT
22/27
STEP3-PS/1AC/5DC/3/PT
12.3
Fundamental prerequisites for parallel
operation (power increase, redundancy
operation)
NOTE: Damage due to thermal overload
If the power supply is operated in a different
temperature range, only a reduced amount of
power can be drawn. Otherwise, the power supply
will be thermally loaded disproportionately and the
device service life significantly reduced. This
thermal load may even damage the power supply
such that it is no longer operational.
In order to ensure correct parallel operation, observe the
following rules:
Cable cross sections: The connecting cables for
supplying the DC load must be rated for the maximum
occurring total current of all power supplies. This also
applies for redundancy operation, whereby the individual
power supply only supplies 50% of the DC load.
Ambient conditions: Select the installation location of the
power supplies such that the prevailing ambient conditions
are identical. This is of particular importance if the power
supplies are installed in different mounting locations. Large
temperature differences between the mounting locations
have a negative effect on the operating points of the power
supplies. This will result in the operating behavior of the
power supplies no longer being identical.
If more than two power supplies are connected in
parallel for the required power increase, fusing the
DC outputs separately is recommended. Use
appropriate miniature circuit breakers (MCBs) for
this. As an alternative, the DC outputs can be
decoupled from one another using redundancy
modules (active or passive).
13
Derating
13.1
Ambient temperature
When mounted in the standard mounting position and
operated within the permissible temperature range for
nominal operation, the power supply provides full output
power. If the power supply is operated beyond the
temperature range for nominal values, note the reduced
output power for the supply of DC loads.
109407_en_00
Figure 25
Output power depending on the ambient
temperature
Cable lengths: To ensure the symmetrical utilization of he
power supplies, the connecting cables for supplying the DC
load must be identical in length.
13.2
Installation height
The power supply can be operated at an installation height
of up to 2000 m without any limitations. Different data
applies for installation locations above 2000 m due to the
differing air pressure and the reduced convection cooling
associated with this.
Figure 26
POut [%]
DC output voltage: On each of the power supplies, set the
DC voltage in idle mode such that the voltage values are
identical. Take any voltage drops occurring due to long
cable lengths into consideration.
120
110
100
90
80
70
60
50
Output power depending on the installation
height
PN 100 % 50 °C
0
1000
2000
3000
4000
5000
H [m]
PHOENIX CONTACT
23/27
STEP3-PS/1AC/5DC/3/PT
13.3
Position-dependent derating
In order that you can use the nominal power of the power supply without limitation, the power supply should always be
mounted in the standard mounting position. Sufficient device-side convection is always assured if the power supply is
mounted in the standard mounting position and the necessary restricted areas are observed.
NOTE: Damage due to thermal overload
If the supply is mounted in a different mounting position, only a reduced amount of power can be drawn.
Otherwise, the power supply will be thermally loaded disproportionately and the device service life significantly
reduced.
[A]
13.3.1 Normal mounting position
IN
100%
Ord.No.1170954
2.1
2.2+ 2
Ou + 2 .3 –
tpu .4 –
tD
C
5V
STEP POWER
DC
60%
3A
OK
Y
-10
.4
50
70
N
[°C]
Z
X
[A]
13.3.2 Rotated mounting position 90° Z-axis
100%
IN
50%
ST
E
P
PO
W
ER O
rd
.No
.11
7095
2.1 + 2.3 –
2.2 + 2.4 –
Output DC
Z
5V 3A
DC OK
Y
4
-10
45
70
[°C]
X
109407_en_00
PHOENIX CONTACT
24/27
STEP3-PS/1AC/5DC/3/PT
[A]
13.3.3 Rotated mounting position 180° Z-axis
IN
100%
In
1.1 put 1
1.2 L 1.3AC
L
1.4 N
N
STEP POWER
40%
ORD.NO.1170954
OK
DC
5V
3A
Y
-10
40
70
2.1
2 +
[°C]
Z
X
[A]
13.3.4 Rotated mounting position 270° Z-axis
100%
IN
DC OK
5V 3A
50%
54
09
Z
Input 1AC
1.1 L 1.3 N
1.2 L 1.4 N
17
.N
o.1
STE
PP
OW
ER
Ord
Y
-10
45
70
[°C]
X
109407_en_00
PHOENIX CONTACT
25/27
STEP3-PS/1AC/5DC/3/PT
[A]
13.3.5 Rotated mounting position 90° X-axis
17
54
09
DC
5V
100%
IN
3A
OK
ST
EP
P
O
W
o.1
d.N
Or
ER
1 Inp
1.2 .1 L ut 1A
C
1
L
1.4 .3 N
N
50%
-10
Y
45
70
[°C]
Z
X
[A]
13.3.6 Rotated mounting position 270° X-axis
100%
IN
50%
-10
Y
Z
45
70
[°C]
X
109407_en_00
PHOENIX CONTACT
26/27
STEP3-PS/1AC/5DC/3/PT
14
Application example
15
The individual performance classes of the STEP POWER
power supplies have been designed such that the different
housing widths are dimensioned in complete horizontal
pitches (DIN 43880). Here, one horizontal pitch (1 HP) is
18 mm.
You can therefore install any possible combination in
surface-mounted or flush mounted distributors (VDE 06031, DIN 43871).
The procedure for mounting the power supply in a
surface-mounted or flush-mounted distributor is
identical to that for DIN rail mounting (see section:
Mounting the power supply).
14.1
Disposal and recycling
Ensure the correct disposal of electronic
components
Do not dispose of the power supply as household
waste.
Observe the applicable national standards and
regulations.
Ensure correct disposal or recycling
Dispose of or recycle packaging material that is no
longer needed as household waste.
Observe the applicable national standards and
regulations.
Power supply in a surface-mounted or flushmounted distributor
Figure 27
Schematic diagram, STEP POWER (4 HP) in a
flush-mounted distributor (12 HP)
1
2
3
4
5
6
7
8
9
10
11
12
1.1
1.2 L 1.3
L
Inpu 1.4 N
t 1ACN
Ord.No.1140066
22-2
7V
STEP POWER
2.1
–
2.2 + 2.3
+ 2.4 + 2.5
Out + 2.6 – 2.7
put – 2.8 –
DC
–
24V
DC
4A
OK
22-2
7V
2.1
–
2.2 + 2.3
+ 2.4 + 2.5
+ –
Out 2.6 2.7 –
put – 2.8
DC –
5A
OK
1.1
1.2 L 1.3
InpuL 1.4 N
t 1ACN
Ord.No.1088486
24V
DC
STEP POWER
STEP POWER
Ord.No.1088478
1.1
1.2 L 1.3
L
Inpu 1.4 N
t 1ACN
clas
s2
out
put
2.1
2.2 + 2.3
+ 2.4 +
2.5
Ou + 2.6 – 2.7
tpu
t DC– 2.8 –
–
24V
109407_en_00
3.7
5A
DC
OK
PHOENIX CONTACT GmbH & Co. KG • 32823 Blomberg • Germany
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