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Power Supply, Primary Switch Mode for Universal Use – QUINT 48 V DC/5 A
Signal Loop (Figure 14)
The two signal outputs mentioned above can be
combined easily.
Example: Monitoring two devices
Use the active alarm output of device 1 and loop in
the electrically isolated alarm output of device 2. In the
event of an error, a group error message is generated.
It is possible to loop any number of devices.
Device 1
Output 48V DC
Device 2
Output 48V DC
This signal combination saves on wiring costs and
logic inputs.
13
14
+ + – –
13
14
+ + – –
DC OK LED
The green DC OK LED enables local function
evaluation in the control cabinet.
DC OK
24 V DC
LED ON
LED
? ashing
LED OFF
Normal operation of the power supply
The output voltage has fallen by more than 10%.
There is a secondary load short circuit or overload
outside the POWER BOOST area.
No mains voltage is present or there is a device fault.
max. 40 mA
Figure 14
7. Function
7.1. Output Characteristic Curve
At ambient temperatures T amb < +40°C (+104°F),
the device can continuously supply 7.5 A with a
48 V DC output voltage (P out = 360 W).
With heavy loads, the working point demonstrates
the U/I characteristic curve shown in Figure 14. The
U OUT
[ V ]
U N 48
< 60 ° C
240 W 360 W
< 40 ° C
output current is limited to I BOOST .
The secondary voltage is reduced until the short
circuit on the secondary side is removed.
The U/I characteristic curve ensures that both heavy
capacitive loads and devices with DC/DC converters
5
I N
7,5
I BOOST
I OUT
[ A ]
can be supplied by QUINT POWER in the input circuit
without any problems.
Connected fuses are reliably tripped. The selectivity
in your system con ? guration is ensured at all times.
7.2. Temperature Response
At an ambient temperature of up to +40°C (+104°F)
the device continuously supplies an output current of
7.5 A.
The device can supply a nominal output current of
5 A up to an ambient temperature of +60°C (+140°F).
The output power must be decreased by 2.5% per
Kelvin temperature increase for ambient temperatures
above +60°C (+140°F).
At ambient temperatures above +70°C (+158°F) or in
the event of a thermal overload, the device does not
switch off. The output power is decreased so low that
device protection is provided. Once the device has
7.5
5
0
U OUT = 48 V
Figure 15
cooled, the output power is increased again.
0
20
40
60
Ambient temperature [°C]
Figure 16
PHOENIX CONTACT page 9 of 10
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