2866750 Datasheet 2866750 | P13-P15

QUINT-PS/ 1AC/24DC/ 5

103127_en_04 PHOENIX CONTACT 13

DC OK

13 14

+---

DC OK

Output 24 V DC

max.

30 V AC/DC

Floating contact

The floating signal contact opens and indicates that the set

output voltage has undershot by more than 10%. Signals and

ohmic loads of up to maximum 30 V and currents of maximum

1 A (or maximum 60 V with maximum 0.5 A) can be switched.

For heavily inductive loads such as a relay, a suitable

protection circuit (e.g. damping diode) is necessary.

DCOK

13 14

+---

DCOK

Output 24 VDC

18 ... 24 VDC

20 mA

Active signal outputs

The 18 ... 24 V DC signal is applied between the "DC OK" and

the "–" connection terminal blocks or between "I < I

" and "–"

and can carry up to 20 mA. By switching from "active high" to

"low", the DC OK signal output signalizes when the output

voltage is fallen short of by more than 10 %.

The DC OK signal is decoupled from the power output. This

ensures that an external supply does not enter from devices

connected in parallel.

The POWER BOOST signal output I < I

signalizes that the

nominal current is exceeded. The power supply unit is then in

the POWER BOOST mode. Using this preventive function

monitoring, critical operating statuses can be governed at an

early stage before it results in a voltage dip.

The 18 ... 24 V DC signal can be directly connected to a logic

input for evaluation.

DC OK

13 14

+---

Output 24 V DC

DC OK

13 14

+---

Output 24 V DC

Signal loop

Monitoring two devices: Use the active signal output of device

1 and loop in the floating signal output of device 2. In the event

of malfunctioning, a common alarm is output. Any number of

devices can be looped in. This signal combination saves

wiring costs and logic inputs.

QUINT-PS/ 1AC/24DC/ 5

103127_en_04 PHOENIX CONTACT 14

15 Function

I [A]

OUT

U [V]

OUT

I<I

U<0,9xU

I>I

BOOST

Output characteristic curve

The power supply unit works with the static power reserve

POWER BOOST as shown in the U/I characteristic curve in

the figure. At ambient temperatures T

amb

<+40°C, I

BOOST

available continuously. At higher temperatures, it's available

for a few minutes. In the event of a secondary-side short

circuit or overload, the output current is limited to I

BOOST

Thereby, the module does not switch off, but rather supplies

a continuous output current. The secondary voltage is

reduced here until the short circuit is eliminated. The U/I

characteristic curve with the power reserve POWER BOOST

ensures that both high inrush currents of capacitive loads as

well as consumers with DC/DC converters in the primary

circuit can be supplied.

In order to trip standard power circuit breakers magnetically

and very quickly, power supply units must supply a multiple of

their nominal current for a short period.

As can be seen from the characteristic curve, when I < I

, I >

and U < 0.9 x U

. The relevant signaling can be found in the

table "Signaling".

= 24 V

= 5 A

BOOST

= 7.5 A

SFB technology = 30 A

= 120 W

BOOST

= 180 W

-25

40 6020

BOOST

Ambient temperature [°C]

Output current [A]

Thermal behavior

With an ambient temperature of up to +40°C, the device

supplies the continuous output current of I

BOOST

. The device

can supply a nominal output current of I

with ambient

temperatures of up to +60°C. In the case of ambient

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.

QUINT-PS/ 1AC/24DC/ 5

103127_en_04 15

PHOENIX CONTACT GmbH & Co. KG • 32823 Blomberg • Germany • Phone: +49-(0) 5235-3-00

PHOENIX CONTACT • P.O.Box 4100 • Harrisburg • PA 17111-0100 • USA • Phone: +717-944-1300

www.phoenixcontact.com

Parallel operation

Devices of the same type can be connected in parallel to

enable both redundancy and an increase in efficiency. On

default upon delivery, a further adjustment is not needed.

If the output voltage is adjusted, a uniform distribution of

power is guaranteed by setting all parallel operated power

supply units to exactly the same output voltage.

To ensure symmetrical current distribution we recommend

that all cable connections from the power supply unit to the

busbar are the same length and have the same cross-section!

Depending on the system, for parallel connection of more

than two power supply units a protective circuit should be

installed at each individual device output (e.g. decoupling

diode, DC fuse or power circuit breaker). This prevents high

return currents in the event of a secondary device fault.

−

Σ =I

Redundant operation

Redundant circuits are suitable for the supply of systems

which make especially high requirements on the operational

safety. If a fault occurs in the primary circuit of the first power

supply unit, the second device automatically takes over the

entire power supply, without interruption, and vice versa. For

this reason, the power supply units to be connected in parallel

are dimensioned in such a way that the total current

requirement of all consumers can be completely covered by

one power supply unit. 100% redundancy makes external

decoupling diodes necessary (QUINT-DIODE/40, Order No.

2938963)!

−

Σ =2xI

Increased performance

For n parallel connected devices, the output current can be

increased to n x I

. Parallel connection to increase efficiency

is used for the expansion of existing systems. It is advisable

to use parallel connection if the power supply unit does not

cover the current requirement of the most powerful

consumer. Otherwise the consumers should be spread

among individual devices independent of one another. A

maximum of five devices can be connected in parallel!

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15

2866750

Mfr. #:

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Manufacturer:

Phoenix Contact

Description:

DIN Rail Power Supplies QUINT SFB 1PHASE 24VOLT 5AMP

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2866750