106980 datasheet(18/25 Pages) PHOENIX

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TRIO-PS-2G/1AC/12DC/10

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Output

A DC voltage for supplying the load is provided at the output

of the power supply. The load is connected via the OUTPUT

+/- connection terminal blocks.

By default, the power supply is pre-set to a nominal output

voltage of 12 V DC.

The output voltage can also be set to the range from 12 V DC

to 18 V DC using the potentiometer in order to compensate

for a possible voltage drop due to the long cable lengths

between the power supply and the load to be supplied.

14.1

Position of output terminals

Figure 14

Position of output terminals

14.2

Protection of the secondary side

The power supply 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.

Figure 15

Schematic diagram, switching the output

terminals

14.3

Output characteristic curve

The power supply works with a dynamic power reserve, the

dynamic boost, as shown in the U/I characteristic curve in

the figure. In the event of a secondary-side short circuit or

overload, the output current is limited to 1.5 x I

N. The

module does not switch off, but supplies a continuous output

current instead. The secondary voltage is then reduced until

the short circuit is eliminated. The U/I characteristic curve

with the dynamic power reserve enables high switch-on

currents of capacitive loads or inductive loads to be supplied

reliably.

Figure 16

U/I characteristic curve with dynamic load

reserve

–U

N = 12 V DC

–I

N = 10 A

–I

dyn. BOOST = 15 A

–P

N = 120 W

–P

dyn. BOOST = 180 W

R Load

[A]

OUT

U < 0,9 x U

t≥5 s

1,5 x I

dyn. Boost

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