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3-Phase Power Supply, Primary Switch Mode for Universal Use – QUINT 48 V DC/20 A
6.6. Output (Figure 11)
The 48 V DC connection is made using the "+" and
"–" screw connections on the screw connection 2 . The
output voltage set upon delivery is 48 V DC.
The output voltage can be adjusted from 40 -
56 V DC on the potentiometer 5 .
O
Ad
42 u t
s
6V
Protecting the Secondary Side:
The device is electronic short-circuit-proof and idling-
proof. In the event of an error, the output voltage is
j
-5
DC
O
K
DC
OK
O
A
limited to a maximum of 60 V DC.
DC
K
u
+ t tD
It should be ensured that all output cables are the
correct size for the maximum output current or have
separate fuse protection.
The secondary side cables should have large cross
sections to keep voltage drops on the cables to a
minimum.
5
4
13
3
14
O
O
pu
+ C 48 V
– 20A
–
6
6.7. Signaling
Both DC OK outputs are used for preventive function
monitoring of the power supply. An electrically isolated
2
Figure 11
signal contact 4 and an active DC OK signal 3 are
available. In addition, the DC OK LED 6 can be used
to evaluate the function of the power supply directly at
the installation location.
Electrically isolated contact
Green "DC OK" LED
Active signal output
ON
U = 24 V
Flashing
U = 0V
OFF
U = 0V
Output 48V DC
(with reference to "-")
Electrically isolated
Closed
Open
Open
Meaning
Description
Output voltage Output voltage No voltage at the
greater than 90% less than 90% of output
of the set voltage the set voltage
QUINT POWER
Output voltage
QUINT POWER
not operating,
and current OK
operating, but:
because:
? Error at the load
? No mains
? Current
13
14
+ + – –
DC OK
consumption
voltage present
greater than
I BOOST
? Output short
circuit
Electrically Isolated Contact (Figure 12)
? Primary side
fuse is blown
? Device is faulty
60 V AC/DC
0.5 A, maximum
Figure 12
When opened, the electrically isolated signal contact
indicates that the output voltage has fallen more than
10% below the set value. Signals and ohmic loads up
to a maximum of 60 V and currents up to a maximum
of 0.5 A can be switched.
With heavy inductive loads, e.g., a relay, a suitable
protective circuit (e.g., free-wheeling diode) is required.
Active Signal Output (Figure 13)
Active signal output
Output 48V DC
The 24 V DC signal is between the "DC OK" and "-"
connection terminal blocks and can be loaded with
13
14
+ + – –
20 mA maximum. This signal output indicates that the
output voltage has fallen more than 10% below the set
value when "active high" changes to "low".
The DC OK signal is isolated from the power output.
This ensures that a separate supply does not enter
from devices connected in parallel.
24 V DC
20 mA,
maximum
DC OK
The 24 V DC signal can be connected directly to the
logic input for evaluation.
Figure 13
PHOENIX CONTACT page 8 of 10
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