1Description
DC/DC converter with SFB technology, dip-coated,
primary-switched, input: 24 V DC, output: 24 V DC,
output current: 5A
QUINT-PS/24DC/24DC/ 5/CO
© PHOENIX CONTACT
Data sheet
QUINT DC/DC converter – superior system availability from
SFB technology
Compact DC/DC converters from the new QUINT POWER
generation maximize your system availability. With SFB
technology (Selective Fuse Breaking Technology), 6-fold
nominal current for 12 ms, it is possible to trigger even
standard circuit breakers reliably and quickly. Faulty current
paths are switched off selectively, the fault is located, and
important system parts remain in operation. Comprehensive
diagnostics are provided through constant monitoring of the
input voltage, output voltage and output current. Preventive
function monitoring visualizes critical operating states and
indicates them to the controller before errors can occur.
The application fields for DC/DC converters are numerous
– Changing the voltage level
– Refreshing the output voltage for constant voltage at
the end of long cables
– Setup of independent supply systems by electrical
isolation
Features
– Wide-range voltage input
– Galvanic isolation
– Reverse polarity protection
– Preventive function monitoring
– Reliable starting of difficult loads with POWER BOOST
static power reserve
– Fast tripping of standard circuit breakers with dynamic
SFB technology power reserve
– High MTBF > 890000 h (40 °C)
Flexible use
– Dip coating enables use in oxidizing and sulfidizing
atmospheres with humidities of up to 100 %
– Adjustable output voltage
– Can be used in Class I, Division 2, Groups A, B, C, D
(Hazardous Location) ANSI-ISA 12.12
Make sure you always use the latest documentation.
It can be downloaded from the product at phoenixcontact.net/products
.
105537_en_02
2017-07-28
QUINT-PS/24DC/24DC/ 5/CO
2Table of contents
1 Description .............................................................................................................................. 1
2 Table of contents ..................................................................................................................... 2
3 Ordering data .......................................................................................................................... 3
4 Technical data ......................................................................................................................... 4
5 Safety regulations and installation notes.................................................................................. 9
6 Basic circuit diagram ............................................................................................................. 10
7 Structure................................................................................................................................ 10
8 Installation ............................................................................................................................. 10
9 Dimensions and mounting positions...................................................................................... 11
10 Mounting on DIN rails ............................................................................................................ 12
10.1 Normal mounting position .................................................................................................... 12
10.2 Rotated mounting position (270° Y-axis) .................................................................................. 12
11 Input ...................................................................................................................................... 12
11.1 Protection of the primary side ............................................................................................... 12
12 Output.................................................................................................................................... 13
12.1 Protection of the secondary side............................................................................................ 13
13 Output characteristic curve.................................................................................................... 13
14 SFB technology ..................................................................................................................... 14
14.1 Circuit breaker tripping characteristics .................................................................................... 14
14.2 Installation notes ............................................................................................................... 14
14.3 Deactivating SFB technology................................................................................................ 14
14.4 SFB configuration .............................................................................................................. 15
15 Signaling................................................................................................................................ 16
15.1 Active switching output “DC OK”............................................................................................ 16
15.2 Active switching output “I<IN” .............................................................................................. 16
15.3 Active switching output “UIN>19.2V” .................................................................................... 17
16 Derating................................................................................................................................. 17
16.1 Temperature-dependent derating .......................................................................................... 17
16.2 Voltage-dependent derating ................................................................................................. 17
16.3 Position-dependent derating................................................................................................. 18
17 Operating modes................................................................................................................... 21
17.1 Series operation ................................................................................................................ 21
17.2 Parallel operation............................................................................................................... 21
17.3 Redundant operation .......................................................................................................... 21
17.4 Increasing power ............................................................................................................... 22
105537_en_02 PHOENIX CONTACT 2 / 22
QUINT-PS/24DC/24DC/ 5/CO
3Ordering data
Description Ty p e Order No. Pcs./Pkt.
Primary-switched QUINT DC/DC converter for DIN rail
mounting with SFB (Selective Fuse Breaking)
Technology, with protective coating, input: 24 V DC,
output: 24 V DC/5 A
Accessories Ty p e Order No. Pcs./Pkt.
Primary-switched QUINT POWER supply for DIN rail
mounting with SFB (selective fuse breaking) technology,
input: 1-phase, output: 24 V DC/10 A
Primary-switched QUINT POWER power supply for DIN
rail mounting with SFB (Selective Fuse Breaking)
Technology, with protective coating, input: 1-phase,
output: 24 V DC/10 A
Primary-switched QUINT POWER power supply for DIN
rail mounting with SFB (Selective Fuse Breaking)
Technology, input: 3-phase, output: 24 V DC/10 A
Active QUINT redundancy module for DIN rail mounting
with Auto Current Balancing ACB technology and
monitoring functions, input: 24 V DC, output: 24 V DC/2 x
10 A or 1 x 20 A, including mounted UTA 107/30 universal
DIN rail adapter
Universal DIN rail adapter UTA 107/30 2320089 100
Universal wall adapter for securely mounting the power
supply in the event of strong vibrations. The power supply
is screwed directly onto the mounting surface. The
universal wall adapter is attached at the top/bottom.
Assembly adapter for QUINT-PS... power supply on S7300 rail
Thermomagnetic device circuit breaker, 1-pos., tripping
characteristic SFB, 1 PDT contact, plug for base element.
Thermomagnetic device circuit breaker, 1-pos., tripping
characteristic SFB, 1 PDT contact, plug for base element.
Thermomagnetic device circuit breaker, 1-pos., tripping
characteristic SFB, 1 PDT contact, plug for base element.
Thermomagnetic device circuit breaker, 1-pos., tripping
characteristic SFB, 1 PDT contact, plug for base element.
Our range of accessories is being continually extended, our current range can be found in the download area.
QUINT-PS/24DC/24DC/ 5/CO 2320542 1
QUINT-PS/1AC/24DC/10 2866763 1
QUINT-PS/1AC/24DC/10/CO 2320911 1
QUINT-PS/3AC/24DC/10 2866705 1
QUINT-ORING/24DC/2X10/
1X20
UWA 182/52 2938235 1
QUINT-PS-ADAPTERS7/1 2938196 1
CB TM1 1A SFB P 2800836 1
CB TM1 2A SFB P 2800837 1
CB TM1 12A SFB P 2800844 1
CB TM1 16A SFB P 2800845 1
2320173 1
105537_en_02 PHOENIX CONTACT 3 / 22
QUINT-PS/24DC/24DC/ 5/CO
4 Technical data
Input data
Nominal input voltage 24 V DC
Input voltage range 18 V DC ... 32 V DC
Extended input voltage range in operation 14 V DC ... 18 V DC (Derating)
Current consumption 7 A (24 V, I
Inrush current limitation typ. 15 A
I2t < 0.5 A2s
Power failure bypass > 10 ms (24 V DC)
Protective circuit Transient surge protection Varistor
Reverse polarity protection Yes ≤ 30 V DC
Input fuse, integrated 15 A (device protection)
Output data
Nominal output voltage 24 V DC ±1%
Setting range of the output voltage (U
) 18 V DC ... 29.5 V DC (> 24 VDC, constant capacity restricted)
Set
Output current 5 A (-25°C ... 60°C)
6.25 A (with POWER BOOST, -25°C ... 40°C permanently,
U
= 24 V DC)
OUT
30 A (SFB technology, 12 ms)
Magnetic circuit breaker tripping B2 / B4 / C2
Active current limitation Approximately 7.2 A
Max. capacitive load Unlimited
Control deviation < 1 % (change in load, static 10 % ... 90 %)
< 2 % (change in load, dynamic 10 % ... 90 %)
< 0.1 % (change in input voltage ±10 %)
Efficiency > 92 %
Rise time < 2 ms (U
Residual ripple < 20 mV
OUT
PP
Peak switching voltages < 10 mVPP (20 MHz)
Connection in parallel Yes, for redundancy and increased capacity
Connection in series yes , 2 (Devices)
Circuit breaker against surge voltage at output by invasive
< 35 V DC
foreign matter
Feedback resistance 35 V DC
)
BOOST
(10 % ... 90 %))
Power consumption
Maximum power dissipation in no-load condition 2.4 W
Power loss nominal load max. 11.4 W
105537_en_02 PHOENIX CONTACT 4 / 22
QUINT-PS/24DC/24DC/ 5/CO
Status and diagnostic indicator DC OK active
Active switching output U
Voltage 18 V DC ... 24 V DC
Current < 20 mA (short-circuit resistant)
Status display "DC OK" LED green
Status and diagnostic indicator POWER BOOST, active
Active switching output I
Voltage 18 V DC ... 24 V DC
Current < 20 mA (short-circuit resistant)
Status display "BOOST" LED yellow/I
Status and diagnostic indicator UIN OK, active
Active switching output U
Voltage 18 V DC ... 24 V DC
Current < 20 mA (short-circuit resistant)
Status display LED "U
General data
Insulation voltage input/output 1.5 kV (type test)
MTBF (IEC 61709, SN 29500) > 890000 h (40 °C)
Normal mounting position horizontal DIN rail NS 35, EN 60715
Dimensions W/H/D (normal mounting position/delivered
condition)
Dimensions W / H / D (X-axis rotated 270°) 122 mm / 130 mm / 35 mm
Weight 0.7 kg
> 0.9 x UN: High signal
OUT
< IN: High signal
OUT
OUT
> 19.2 V: High signal
IN
< 19.2 V" yellow/U
IN
1 kV (routine test)
32 mm / 130 mm / 125 mm
> IN :LED on
< 19.2 V DC: LED on
IN
Housing
Degree of protection IP20
Type of housing Aluminum (AlMg3)
Hood version Galvanized sheet steel, free from chrome (VI)
Input connection data
Connection method Pluggable screw connection
Conductor cross section, solid 0.2 mm² ... 2.5 mm²
Conductor cross section, flexible 0.2 mm² ... 2.5 mm²
Conductor cross section AWG/kcmil 24 ... 12
Stripping length 8 mm
Screw thread M3
Tightening torque 0.5 Nm ... 0.6 Nm
105537_en_02 PHOENIX CONTACT 5 / 22
QUINT-PS/24DC/24DC/ 5/CO
Connection data, output/signals
Connection method Pluggable screw connection
Conductor cross section, solid 0.2 mm² ... 2.5 mm²
Conductor cross section, flexible 0.2 mm² ... 2.5 mm²
Conductor cross section AWG/kcmil 24 ... 12
Stripping length 7 mm
Screw thread M3
Tightening torque 0.5 Nm ... 0.6 Nm
Ambient conditions
Protection class III
Ambient temperature (operation) -25 °C ... 70 °C (> 60 °C derating, 2.5 %/K, startup at -40°C
type-tested)
Ambient temperature (start-up type tested) -40 °C
Ambient temperature (storage/transport) -40 °C ... 85 °C
Max. permissible relative humidity (operation) 100 % (at 25 °C, non-condensing)
Vibration (operation) < 15 Hz, amplitude ±2.5 mm (according to IEC 60068-2-6)
15 Hz ... 150 Hz, 2.3g, 90 min.
Shock 18 ms, 30g, in each space direction (according to IEC 60068-
2-27)
Degree of pollution in acc. with EN 50178 2
Climatic class 3K3 (in acc. with EN 60721)
Approvals
ATEX II 3 G Ex ec IIC T4 Gc
IECEx Ex ec IIC T4 Gc
UL approvals UL/C-UL listed UL 508
UL/C-UL Recognized UL 60950-1
UL ANSI/ISA-12.12.01 Class I, Division 2, Groups A, B, C, D
(Hazardous Location)
Shipbuilding DNVGL(EMCB)
Current approvals/permissions for the product can be found in the download area under phoenixcontact.net/
products.
105537_en_02 PHOENIX CONTACT 6 / 22
Conformance with EMC Directive 2014/30/EU
Noise immunity according to EN 61000-6-2
Electrostatic discharge EN 61000-4-2
Housing contact discharge 4 kV (Test Level 2) 8 kV (Test Level 4)
Housing air discharge 8 kV (Test Level 3) 15 kV (Test Level 4)
Comments Criterion B Criterion A
Electromagnetic HF field EN 61000-4-3
Frequency range 80 MHz ... 1 GHz 80 MHz ... 1 GHz
Test field strength 10 V/m 10 V/m
Frequency range 1.4 GHz ... 2 GHz 1 GHz ... 2 GHz
Test field strength 3 V/m 10 V/m
Frequency range 2 GHz ... 2.7 GHz 2 GHz ... 3 GHz
Test field strength 1 V/m 10 V/m
Comments Criterion A Criterion A
Fast transients (burst) EN 61000-4-4
Comments Criterion B Criterion A
Surge current loads (surge) EN 61000-4-5
Comments Criterion B Criterion A
Conducted interference EN61000-4-6
Input/Output/Signal asymmetrical asymmetrical
Frequency range 0.15 MHz ... 80 MHz 0.15 MHz ... 80 MHz
Comments Criterion A Criterion A
QUINT-PS/24DC/24DC/ 5/CO
EN 61000-6-2 requirement tested
Input 2 kV (Test Level 3 -
asymmetrical)
Output 2 kV (Test Level 3 -
asymmetrical)
Signal 1 kV (Test Level 3 -
asymmetrical)
Input 0.5 kV (Test Level 1 -
symmetrical)
0.5 kV (Test Level 1 -
asymmetrical)
Output 0.5 kV (Test Level 1 -
symmetrical)
0.5 kV (Test Level 1 -
asymmetrical)
Signal 1 kV (Test Level 2 -
asymmetrical)
Voltage 10 V (Test Level 3) 10 V (Test Level 3)
2 kV (Test Level 3 asymmetrical)
2 kV (Test Level 3 asymmetrical)
2 kV (Test Level 4 asymmetrical)
1 kV (Test Level 2 symmetrical)
2 kV (Test Level 3 asymmetrical)
1 kV (Test Level 2 symmetrical)
2 kV (Test Level 3 asymmetrical)
1 kV (Test Level 2 asymmetrical)
105537_en_02 PHOENIX CONTACT 7 / 22
QUINT-PS/24DC/24DC/ 5/CO
Key
Criterion A Normal operating behavior within the specified limits.
Criterion B Temporary impairment to operational behavior that is corrected
by the device itself.
Emitted interference in acc. with EN 61000-6-3
Radio interference voltage in acc. with EN 55011 EN 55011 (EN 55022) Class B, area of application: Industry
and residential
Emitted radio interference in acc. with EN 55011 EN 55011 (EN 55022) Class B, area of application: Industry
and residential
All technical specifications are nominal and refer to a room temperature of 25°C and 70% relative humidity at
100m above sea level.
Current approvals/permissions for the product can be found in the download area under phoenixcontact.net/
products.
105537_en_02 PHOENIX CONTACT 8 / 22
QUINT-PS/24DC/24DC/ 5/CO
5 Safety regulations and installation
notes
Before startup please ensure:
– Only skilled persons may install, start up,
and operate the device.
– Observe the national safety and accident
prevention regulations.
NOTE: Danger if used improperly
– The device is a built-in device.
– The IP20 degree of protection
(IEC60529/EN60529) of the device is
intended for use in a clean and dry
environment. Do not subject the device to
any load that exceeds the described
limits.
– Do not subject the device to mechanical
and/or thermal loads that exceed the
specified limits.
– Installation and startup may only be
carried out by qualified personnel. The
relevant country-specific regulations
must be observed.
– It is not permissible to open or modify the
device. Do not repair the device yourself
but replace it with an equivalent device.
Repairs may only be carried out by the
manufacturer. The manufacturer is not
liable for damage resulting from violation.
EXPLOSION HAZARD!
Only remove equipment when it is
disconnected and not in the potentially
explosive area.
DANGER
Never carry out work on live parts!
The housing can become very hot, depending
on the ambient temperature and load!
CAUTION:
Before startup please ensure:
– Connection must be performed by
specialist personnel and protection
against electric shock ensured.
– It must be possible to switch off the
device outside the power supply
according to the regulations in EN 609501 (e.g., by line protection on the primary
side).
– All feed lines are sufficiently protected
and dimensioned!
– All output lines are dimensioned
according to the maximum output current
of the device or separately protected!
– Sufficient convection is guaranteed!
105537_en_02 PHOENIX CONTACT 9 / 22
QUINT-PS/24DC/24DC/ 5/CO
DC OK
U >19,2V
IN
I<I
N
QUINT POWER
+
-
Input DC 24 V
OutputDC 2
4
V5A
-
-
+
+
D
C
O
K
Ι
<
Ι
N
D
C
O
K
B
oo
st
18
-2
9,5
V
-
U>
I
N
1
9
,2
V
U<1
9.2
V
IN
12
9
7
8
6
5
3
4
1
11
2
!
ON OFF
10
SFB
QUINT POWER
+
-
Input DC 24V
Output DC 24 V 5 A
-
-
++
D
C
O
K
Ι
<
Ι
N
DC
O
K
B
oost
18-29.5 V
-
U>
IN
19.2
V
U <9.6V
IN
!
6 Basic circuit diagram
Figure 1 Basic circuit diagram
7 Structure
8 Installation
Figure 3 Convection
The DC/DC converter can be snapped onto
all DIN rails according to EN60715 and
should be mounted in the normal mounting
position (connection terminal blocks on top
and bottom).
– The housing can become very hot
depending on the ambient temperature
Figure 2 Function elements
and load of the DC/DC converter.
1 DC input
2 DC output
3 Potentiometer 18 ... 29.5VDC
4 LED "U
< 19.2 V", yellow
IN
5 "DC OK" LED, green
6 LED "BOOST", yellow
7 U
> 19.2 V, active switching output
IN
8 I < IIN, active switching output
9 DC OK, active switching output
10 SFB switch (left: SFB activated, right: SFB deactivated)
11 Strain relief for connecting cables
12 DIN rail adapter
105537_en_02 PHOENIX CONTACT 10 / 22
9 Dimensions and mounting
QUINT POWER
+
-
Input DC 24V
OutputDC 24V 5A
DC >
IN
DCOKΙ
<
Ι
N
DC OK
Boost
18-29.5 V
19.2V
U <19.2 V
IN
++
---
!
32
55
130
122
50
115
230
positions
QUINT-PS/24DC/24DC/ 5/CO
Figure 4 Dimensions, keepout areas, and mounting positions
Possible mounting positions:
The required keepout areas for mounting vary depending on the application and ambient conditions. The
keepout area dimensions specified in the figure are designed for the following application (nominal output
power) and ambient conditions (ambient temperature):
Nominal output power:≥50100%
Ambient temperature: -25 °C...≤40 °C
For other variants, please refer to the table below.
Output power Ambient temperature Spacing [mm]
lateral top/bottom
0...50%-25...70°C 0 40/20
≥50...100%
-25...≤40°C
≥50...100%>40...70°C
Normal mounting position, installation depth 125 mm (+ DIN rail) (delivery state)
5
15
Rotated mounting position, 270° Y-axis, installation depth: 35 mm (+ DIN rail)
50≥100...125%
105537_en_02 PHOENIX CONTACT 11 / 22
QUINT-PS/24DC/24DC/ 5/CO
A
B
B
A
QUINT POWER
+
-
Input DC 24V
OutputDC 24V 5A
-
-
++
D
C
OK
Ι
<
Ι
N
DC OK
Boost
18-29.5 V
-
U>
IN
19
.2V
U <9.6V
IN
!
10 Mounting on DIN rails
10.1 Normal mounting position
Assembly:
Position the DC/DC converter with the DIN rail guide on the
top edge of the DIN rail and snap it in by pushing downward.
Removing:
Pull back the snap-on catch using a screwdriver and detach
the DC/DC converter from the bottom edge of the DIN rail.
Other mounting positions are also possible.
Always observe position-dependent derating.
11 Input
Connection to the input voltage is established via the screw
connectors on the DC input screw connection.
The DC/DC converter converts a DC voltage of 18...32V
into adjustable, regulated, and electrically isolated output
voltage.
The DC/DC converter requires an input voltage of 18V.
During operation, this can drop down to 14V, then observe
the voltage-dependent derating.
10.2 Rotated mounting position (270° Y-axis)
Figure 6 Input
A rotated mounting position can be achieved for the DC/DC
converter by mounting the device on the DIN rail at a 270°
angle. Mount the DIN rail adapter (UTA 107/30) as shown in
the figure. No additional mounting material is required.
Mounting screws: Torx® T10 (0.8 Nm ... 0.9 Nm tightening
torque).
11.1 Protection of the primary side
Installation of the DC/DC converter must correspond to EN
60950 regulations.
An internal fuse is provided for device protection. Additional
device protection is not required.
The connecting cables on the primary side should have
large cross sections to keep the voltage drops in the cables
as low as possible.
NOTE: Device may be damaged
If an internal fuse trips, this is due to a device
fault. In this case, the DC/DC converter must
Figure 5 Rotated mounting position (270° Y-axis)
105537_en_02 PHOENIX CONTACT 12 / 22
be inspected in the factory.
QUINT-PS/24DC/24DC/ 5/CO
QUINT POWER
+
-
Input DC 24V
Output DC 24 V 5 A
-
-
++
DC
O
K
Ι
<
Ι
N
DC OK
Boost
18-29.5 V
-
U>
IN
1
9
.
2
V
U <9.6V
IN
!
I [A]
OUT
U [V]
OUT
U
N
I
N
I<I
N
<60 °C
U<0,9xU
N
I>I
N
<40 °C
I
BOOST
12 Output
Connection of the output voltage is established via the
screw connectors on the DC output screw connection.
The output voltage can be set on the potentiometer.
Figure 7 Output
12.1 Protection of the secondary side
The DC/DC converter is electronically short-circuit-proof
and idling-proof. In the event of an error, the output voltage
is limited. It must be ensured that all output cables are
dimensioned accordingly for the maximum output current or
have separate protection.
The connecting cables on the secondary side should have
large cross sections to keep the voltage drops in the cables
as low as possible.
13 Output characteristic curve
The DC/DC converter works with the POWER BOOST
power reserve as shown in the U/I characteristic curve in the
figure. At ambient temperatures < 40°C, I
permanently available. It is also available at higher
temperatures for a few minutes.
In the event of a secondary-side short circuit or overload, the
output current is limited to I
. In this case, the DC/DC
BOOST
converter does not switch off but supplies output current
continuously. The secondary voltage is then reduced until
the short circuit is eliminated. The U/I characteristic curve
with the POWER BOOST power reserve ensures that high
inrush currents of capacitive loads in the primary circuit can
be supplied reliably.
Figure 8 Output characteristic curve
= 24 V
–U
N
–IN = 5 A
BOOST
= 6.25 A
–I
– SFB Technology = 30 A (for 12 ms)
= 120 W
–P
N
–P
BOOST
= 150 W
BOOST
is
105537_en_02 PHOENIX CONTACT 13 / 22
QUINT-PS/24DC/24DC/ 5/CO
t
I [A]
6x I
N
I
BOOST
I
N
3-5 ms
QUINT POWER
+
-
Input DC 24V
Output DC 24 V 5 A
-
-
++
DC
OK
Ι
<
Ι
N
DC OK
Boost
18-29.5 V
-
U>
IN
1
9
.
2
V
U <9.6V
IN
!
ON OFF
SFB
14 SFB technology
SFB (Selective Fuse Breaking) technology reliably switches
off faulty current paths in the event of a short circuit. In this
case, it supplies up to six times the nominal current for 12
ms. SFB technology therefore reliably triggers standard
circuit breakers. Faults are located reliably and important
system parts remain in operation.
14.1 Circuit breaker tripping characteristics
Typically, a circuit breaker trips within 3 ... 5 ms. Fast
enough to avoid voltage drops of parallel connected loads.
Figure 9 Quick tripping of circuit breakers with SFB
technology
If conditions cannot be observed, SFB
technology can be deactivated.
14.3 Deactivating SFB technology
The DC/DC converter is equipped with an additional SFB
switch which can be used to deactivate SFB technology.
The SFB switch is located on the top side of the housing and
is accessible for suitable tools, such as a small screwdriver
through the vents.
14.2 Installation notes
To use the SFB technology of the QUINT DC/DC converter,
you must observe the following requirements:
– When designing the secondary side, consider the
configuration matrix that describes the maximum cable
lengths depending on the performance class of the DC/
DC converters, the conductor cross section, and the
circuit breaker.
The current configuration matrix can be found
in the product download area.
– Make sure that the source to be supplied is able to
deliver a corresponding current pulse to supply the DC/
DC converter. Forexample, this can be achieved by
upstream connection of a QUINT SFB power supply
(see accessories) or suitable battery capacity.
– Ensure the lowest possible cable impedance at the
input of the DC/DC converter by using short cable
lengths and large cable cross sections.
Observe the maximum distance between the
source to be supplied and the DC/DC
converter.
(see also SFB configuration)
Figure 10 Position of the SFB switch
Switch position SFB technology status
left ON (default setting)
right OFF
Activating/deactivating SFB technology must
only be performed when the DC/DC converter
is switched off.
105537_en_02 PHOENIX CONTACT 14 / 22
14.4 SFB configuration
+
-
+
-
+
-
+
-
l
1
l
2
Supplying
Source
Load
DC/DC
Converters
Figure 11 Cable lengths
QUINT-PS/24DC/24DC/ 5/CO
Maximum distance from the source to be supplied and the DC/DC converter (l
)
1
Source to be supplied: QUINT-PS/xAC/24DC/10, QUINT-PS/1AC/24DC/10/CO
Cross section [mm²] 0.75 1.0 1.5 2.5
Distance l
[m] 7.6 10.1 15.2 25.4
1
Source to be supplied: battery, 24V; 3.4Ah
Cross section [mm²] 0.75 1.0 1.5 2.5
Distance l
[m] 5.4 7.2 10.9 18.1
1
Source to be supplied: battery, 24V; 7.2 Ah
Cross section [mm²] 0.75 1.0 1.5 2.5
Distance l
[m] 7.6 10.1 15.2 25.4
1
Source to be supplied: battery, 24V; 12Ah
Cross section [mm²] 0.75 1.0 1.5 2.5
Distance l
[m] 7.6 10.1 15.2 25.4
1
Source to be supplied: battery, 24V; 38Ah
Cross section [mm²] 0.75 1.0 1.5 2.5
Distance l
Maximum distance from the source to be supplied and the load (l
[m] 8.7 11.6 17.4 29.0
1
)
2
Cross section [mm²] 0.75 1.0 1.50 2.50
Distance l
with C2 circuit breaker [m] 5 7 11 19
2
The following parameters are the basis for calculation:
– Circuit breaker from Siemens, B and C characteristics
(e.g., B6: 5SY6106-6)
– B characteristic: electromagnetic tripping of the circuit
breaker at the latest at (5-fold rated current) x
(correction factor 1.2 at 0Hz) = 6-fold rated current
– C characteristic: electromagnetic tripping of the circuit
breaker at the latest at (10-fold rated current) x
(correction factor 1.2 at 0Hz) = 12-fold rated current
– Ambient temperature: +20°C
– The internal resistances of the circuit breakers are
considered.
– In addition to short circuit current, the relevant power
supply unit supplies half of the nominal current for paths
connected in parallel.
105537_en_02 PHOENIX CONTACT 15 / 22
QUINT-PS/24DC/24DC/ 5/CO
QUINT POWER
+
-
Input DC 24V
Output DC 24 V 5 A
-
-
++
D
C
OK
Ι
<
Ι
N
DC OK
Boost
18-29.5 V
-
U>
IN
1
9
.
2
V
U <9.6V
IN
!
18 ... 24 V DC
20 mA
DC OK
PLC Digital Input
+
18 ... 24 V DC
20 mA
I<I
N
PLC Digital Input
+
15 Signaling
The active DC OK signal output, the active POWER BOOST
signal output, and the active UIN OK signal output are
available for function monitoring. In addition, the DC OK
LED, BOOST LED, and U
evaluation of the DC/DC converter directly at the installation
location.
Figure 12 Signal outputs
Due to permanent monitoring of input voltage, output
voltage and output current, critical operating states are
reported before errors occur.
I < I
DC OK LED,
green
Boost LED,
yellow
"DC OK" active
switching
output
"I<I
" active
N
switching
output
Meaning Normal
N
lit lit flashing
OFF lit lit
high high low
high low low
operation
<19.2V LED enable function
IN
I > I
N
POWER
U < 0.9 x U
Overload
BOOST, active
N
15.1 Active switching output “DC OK”
During normal operation of the DC/DC converter, the DC OK
output signal (U
> 0.9 x UN) is between connection
OUT
terminal blocks “DC OK” and “-” and can carry a maximum
of 20 mA. The DC OK signal output indicates an output
voltage underrange of more than 10 % by switching from
“active high” to “low”.
The DC OK signal is decoupled from the power output. This
makes it impossible for devices connected in parallel to act
as an external power supply.
15.2 Active switching output “I<I
”
N
During normal operation of the DC/DC converter, the boost
output signal (I<IN) is between connection terminal blocks
” and “-” and can carry a maximum of 20mA. The
“I<I
N
boost signal output indicates that the nominal current has
been exceeded and that boost mode has been entered by
switching from “active high” to “low”.
UIN > 19.2 V DC UIN < 19.2 V DC
< 19.2 V" LED,
"U
IN
OFF lit
yellow
Active switching
output "U
> 19.2 V"
IN
Meaning U
105537_en_02 PHOENIX CONTACT 16 / 22
high low
OK UIN low
IN
QUINT-PS/24DC/24DC/ 5/CO
18 ... 24 V DC
20 mA
U >19,2V
IN
PLC Digital Input
+
-25
0
40 6020
I
BOOST
I
N
Ambient temperature [°C]
Output
curren
t [A]
100%
125%
14
15 16 17 18
[U /V]
IN
[I /A]
OUT
U = 24V
OUT
U = 26 V
OUT
U = 28 V
OUT
-25 ℃ ... 40 ℃
40 ℃ ... 60 ℃
15.3 Active switching output “UIN>19.2V”
During normal operation of the DC/DC converter, the
UIN>19.2V output signal is between connection terminal
blocks "UIN>19.2V” and “-” and can carry a maximum of
20mA. The UIN>19.2V signal output indicates a low input
voltage by switching from “active high” to “low”.
16 Derating
16.1 Temperature-dependent derating
With an ambient temperature of up to +40°C, the device
supplies the continuous output current of I
device can supply a nominal output current of IN with
ambient temperatures of up to +60°C . In the case o f am bie nt
temperatures above +60°C, the output current must be
reduced by 2.5% per Kelvin increase in temperature. The
device does not switch off at ambient temperatures of +70°C
or thermal overload. The output capacity is reduced as far as
necessary to provide device protection. After it has cooled
down, the output capacity is increased again.
16.2 Voltage-dependent derating
The nominal input voltage of 24VDC is divided into the
areas of starting and operation. The DC/DC converter
requires at least 18VDC for cold starting, whereby the input
voltage can sink to 14VDC during operation. The device
only switches off under this limit. The upper voltage limit is
32VDC for both starting and operation.
BOOST
. The
105537_en_02 PHOENIX CONTACT 17 / 22
16.3 Position-dependent derating
Z
X
Y
QUINT POWER
+
-
Input DC 24V
OutputDC 24 V 5A
-
-
++
DC
OK
Ι
<
Ι
N
DC OK
Boost
18-29.5 V
-
U>
IN
19.2V
U <19.2V
IN
!
I
N
I
BOOST
-25
0 1020304050607080
[°C]
[A]
Z
X
Y
QUINT POWER
+
-
Input DC 24V
Output DC 24 V 5 A
-
-
+
+
DC
OK
Ι
<
Ι
N
DC OK
Boost
18-29.5 V
-
U>
IN
19.2V
U <19.2V
IN
!
I
N
I
BOOST
-25
0 1020304050607080
[°C]
[A]
The DC/DC converters can be snapped onto all DIN rails
according to EN 50022-35. They should be mounted
horizontally (input terminal blocks on bottom). When
installing in a different mounting position, derating should be
observed.
The characteristic curve can be used to determine the
maximal output power to be drawn for each ambient
temperature for different mounting positions.
Normal mounting position
QUINT-PS/24DC/24DC/ 5/CO
Rotated mounting position 90° X-axis
105537_en_02 PHOENIX CONTACT 18 / 22
Rotated mounting position 180° X-axis
QUINT POWER
+
-
Input DC 24V
Output DC 24 V 5 A
-
-
++
D
C
O
K
Ι
<
Ι
N
DC OK
Boost
18-29.5 V
-
U>
IN
19
.2V
U <19.2V
IN
!
Z
X
Y
I
N
I
BOOST
-25
0 1020304050607080
[°C]
[A]
Z
X
Y
QUINT POWER
+
-
Input DC 24V
Output DC 24 V 5 A
-
-
++
DC
OK
Ι
<
Ι
N
DC OK
Boost
18-29.5 V
-
U>
IN
19.2V
U <19.2V
IN
!
I
N
I
BOOST
-25
0 1020304050607080
[°C]
[A]
Rotated mounting position 270° X-axis
QUINT-PS/24DC/24DC/ 5/CO
105537_en_02 PHOENIX CONTACT 19 / 22
Rotated mounting position 90° Z-axis
I
N
I
BOOST
-25
0 1020304050607080
[°C]
[A]
Z
X
Y
QUINT POWER
+
-
In
p
ut D
C
24
V
OutputDC 2
4
V5A
-
-
++
DC
OK
Ι
<
Ι
N
D
C
O
K
B
o
o
s
t
1
8
-2
9
.5
V
-
U>
IN
1
9
.2
V
U<
1
9
.2
V
I
N
!
I
N
I
BOOST
-25
0 1020304050607080
[°C]
[A]
Z
X
Y
Rotated mounting position 270° Z-axis
QUINT-PS/24DC/24DC/ 5/CO
105537_en_02 PHOENIX CONTACT 20 / 22
QUINT-PS/24DC/24DC/ 5/CO
+48 V -48 V
+24 V
-24 V
+
-
+
-
+
-
+
-
+
-
+
-
+
I
N
−
+
I
N
−
+
+
−
−
Σ = I
N
+
I
N
−
+
I
N
−
+
+−−
Σ = I
N
+
I
N
−
+
I
N
−
+
+−−
Σ = I
N
17 Operating modes
17.1 Series operation
Two DC/DC converters can be connected in series to
double the voltage. Only devices of the same performance
class should be connected in series. Series connection
should always be used if the output voltage of the module is
not sufficient. For example, DC/DC converters with 24VDC
nominal output voltage each supply 48VDC in series.
Depending on the specification of the PE connection, output
voltages of +48V or -48V as well as ±24V DC can also be
made available.
17.3 Redundant operation
Redundant circuits are suitable for supplying systems,
which place particularly high demands on operational
safety. If a fault occurs in the primary circuit of the first power
supply unit, the second device automatically takes over the
complete power supply without interruption, and vice versa.
For this purpose, the power supply units to be connected in
parallel must be large enough to ensure that the total current
requirements of all loads can be fully met by one power
supply unit. External decoupling diodes are required for
100% redundancy!
Optimization of redundancy can be achieved by decoupling
and monitoring. Phoenix Contact offers a comprehensive
product range for this purpose (e.g., QUINT-DIODE or
QUINT-ORING).
Example: diode module
Figure 13 Series operation
17.2 Parallel operation
DC/DC converters of the same type can be connected in
parallel to increase both redundancy and power. No further
adjustments to the default setting are necessary.
To ensure symmetrical load distribution, it is recommended
Example: QUINT ORING
that all cable connections from the DC/DC converters to the
busbar are the same length and have the same conductor
cross section.
Depending on the system, a protective circuit should be
installed at each individual device output (e.g. decoupling
diode or DC fuse) for parallel connection of more than two
DC/DC converters. This prevents high return currents in the
event of a secondary device fault.
105537_en_02 PHOENIX CONTACT 21 / 22
17.4 Increasing power
+–
I
N
+–
I
N
+
–
+–
IΣ= 2xI
N
The output current can be increased to n x I
in the case of
N
n parallel connected DC/DC converters. Parallel connection
for increasing power is used when extending existing
systems. Parallel connection is recommended if the DC/DC
converter does not cover the current consumption of the
most powerful load. Otherwise, the loads should be
distributed between individual devices that are independent
of one another.
QUINT-PS/24DC/24DC/ 5/CO
105537_en_02 22 / 22
PHOENIX CONTACT GmbH & Co. KG • 32823 Blomberg • Germany
phoenixcontact.com
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