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Power Supply, Primary Switch Mode, Narrow Design – MINI-PS-100-240AC/24DC/4
6.4. Output ( 2 , Figure 9)
NEC Class 2 power supply when installed with a 4.2
amp maximum, UL listed fuse or circuit breaker in the
output of the power supply. This procedure must be
followed to meet NEC Class 2 requirements
Protecting the Secondary Side:
The device is electronic short-circuit-proof and idling-
proof. In the event of an error, the output voltage is
limited to a maximum of 35 V DC.
It should be ensured that all output cables are the
correct size for the maximum output current or have
Output 24V DC
+ – –
separate fuse protection.
The secondary side cables should have large cross
sections to keep voltage drops on the cables to a
minimum.
Active signal output ( 3 , Figure 10)
The 24 V DC signal is between the "DC OK" and "-"
connection terminal blocks and can be loaded with
20 mA maximum. This signal output indicates that the
output voltage has fallen below 21.5 V DC 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.
The 24 V DC signal can be connected directly to the
logic input for evaluation.
DC OK LED
U OUT
[ V ]
U N 24
24 V DC
20 mA
DC OK
U OUT = 24 V
Figure 10
The green DC OK LED enables local function
evaluation in the control cabinet.
< 60°C
< 40°C
t < 2 min.
< 60 °C
Green
Status 1
ON
Status 2
OFF
(140°F)
(104°F)
"DC OK" LED 5
Active DC OK
switching output
Meaning
U = +24 V
(with reference to "-")
Normal operation of
the power supply
U=0V
(with reference to "-")
U OUT ≤ 21.5 V DC
? Secondary load
4
I N
5
6 I OUT
I BOOST [ A ]
U OUT > 21.5 V
short circuit
or overload
? No mains voltage or
device fault
7. Installation
7.1. Output Characteristic Curve
The device can supply a nominal output current of
Figure 11
The U/I characteristic curve ensures that both heavy
capacitive loads and devices with DC/DC converters
can be supplied by MINI 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.
4 A up to an ambient temperature of 60°C (140°F).
With an ambient temperature of up to 40°C (104°F) the
device continuously supplies an output current of 5 A.
At temperatures up to 60°C (140°F), the POWER
BOOST provides a short-term output current of 6 A for
a few minutes.
With high loads, the working point demonstrates the
U/I characteristic curve shown in Figure 11.
On an overload or short circuit, the entire output
current I BOOST is provided permanently at a reduced
output voltage.
Once the overload or short circuit has been removed,
the entire set secondary voltage is available again.
PHOENIX CONTACT page 7 of 8
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