Phoenix Contact TRIO-PS-2G/3AC/24DC/40, Datasheet

TRIO-PS-2G/3AC/24DC/40

105907_en_00

PHOENIX CONTACT

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14

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 24 V DC.

The output voltage can also be set to the range from 24 V DC 

to 28 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

 = 24 V DC

–

I

N

 = 40 A

–

I

dyn. Boost 

= 60 A

–

P

N

 = 960 W

–

P

dyn. BOOST

 = 1440 W

L2

L3

L1

Input 3A

C 400-500V

13

14

DC OK

24-28V

Output DC 24V 40A

+

+

-

-

-

Output DC 24V 40A

+

+

-

-

-

TRIO PO

WER

-

-

+

+

-

R Load

Output DC 24V 40A

I

[A]

OUT

U[

V

]

OUT

U

N

I

N

U < 0,9 x U

N

t ≥ 5  s

1,5 x I

N

dyn. Boost