AXL F SSDO8/3 1F
26
PHOENIX CONTACT
106888_en_01
3.2
Supply voltage U
O
Supply voltage U
O
supplies the output circuits. Technical data for supply voltage U
O
: see
“Supply voltage U
O
(actuators)” on page 65.
The maximum current carrying capacity for the main circuit U
O
is 8 A.
Supply voltage U
O
should feature a connection to functional earth ground according to
EN 60204-1.
Figure 3-1
Supply voltage U
O
with connection to functional earth ground according to
EN 60204-1
Observe the information regarding the behavior of the module in the event of an error at
supply voltage U
O
: see Section 8 “Errors: messages and removal” on page 53.
WARNING: Loss of safety function
The use of unsuitable power supplies can result in the loss of the safety function.
•
Observe the general safety notes: see Section 1.2 “Electrical safety” on page 10.
WARNING: Loss of safety function
Parasitic voltages can result in the loss of the safety function.
•
Supply supply voltage U
BUS
and supply voltage U
O
at the bus coupler from the same
power supply unit so that the module loads are not affected by parasitic voltages in
the event of an error.
NOTE: Module damage
Parallel protection against polarity reversal is only implemented in the device for a limited
period. The following measures must be taken to prevent damage to the module:
•
Due to the maximum current carrying capacity of 8 A, protect supply voltage U
O
externally with an 8 AT fuse.
•
Only use PELV power supply units with at least four times the nominal tripping current,
as this is the only way to ensure tripping times of less than 300 ms.
24 V DC
(PELV)
+
-
230 V
24 V
external fuse
U f
O
or supply at the Axioline F module
GND for supply at a bus coupler
or a power terminal
105739B000_en
U
BK
for supply at a bus coupler
or a power terminal
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