IB IL 24 MUX MA-PAC
30
PHOENIX CONTACT
5981_en_06
4.2.2
Electrical isolation
Electrical isolation:
Remote bus
In order to improve noise immunity, the remote bus interface voltage is isolated from the
station's electronics. The incoming remote bus interface shield is AC-coupled to earth
ground using a resistor and a capacitor.
Electrical isolation:
Functional earth
ground/shield
FE and FE capacitive (shield) represent two separate isolated groups.
The field multiplexer does not have electrical isolation for the I/O terminal communications
power. U
MUX
(24 V), U
L
(7.5 V) and U
ANA
(24 V) are not electrically isolated.
The separate supplies for the logic (U
MUX,
U
L
and U
ANA
) and for the I/O (U
S
and U
) make
it easy to set up electrically isolated areas (logic and I/O). Figure 4-3 through Figure 4-5
illustrate various possible implementations of electrical isolation.
Summary of Contents for 2861205
Page 1: ...User manual Configuring and installing the Inline field multiplexer...
Page 6: ...IB IL 24 MUX MA PAC 6 PHOENIX CONTACT 5981_en_06...
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