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A. Technical appendix
A.1.2 Power supply
Power supply
Operating voltage (reverse polarity protected)
for bus nodes and connected I-port devices
– Nominal value
– Tolerance range
Load voltage (reverse polarity protected) for
connected I-port devices
– Maximum value
– Typical tolerance range
(device-dependent)
Voltage supply to the bus (fieldbus interface,
reverse polarity protected)
– Tolerance range
– Current consumption, interface electronics
Bus node own-current consumption
from operating voltage supply for electronics/
sensors (U
)
EL/SEN
Load capacity of the operating and load voltage
1) 3)
supply
– Bus node on I-port device (e.g. valve terminal)
– Bus node on electrical connection box, type
CAPC-...
Mains buffering time
1)
Separate, external fuses are required for operating and load voltage supply
2)
Dependent on the connected I-port devices (e.g. valve terminal)
3)
Load capacity for the connected I-port devices, e.g. the valve terminal, including the bus node
Tab. A/4:
Power supply
A-6
1)
1)
2)
DC 24 V ± 25 %
DC 18 ...30 V
max. DC 30 V
2)
DC 18 ...30 V
DC 11 ...30 V
max. 50 mA
max. 65 mA at 24 V
(internal electronics)
max. 4 A
max. 2 A per connection (X
10 ms
Festo P.BE-CTEU-DN-OP+MAINT-EN en 1206NH
/ X
)
1
2
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