Phoenix Contact 2861205, User Manual

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IB IL 24 MUX MA-PAC
20
PHOENIX CONTACT 5981_en_06
The following terminal points are jumpered internally in the module:
Figure 3-4 Internal jumpering
3.4 Installation instructions
3.4.1 Transmission media in the field multiplexer system
When you use an additional interface converter, you may use different transmission media
within the field multiplexer system. They are described in detail in Section “Transmission
media” on page 41.
3.4.2 Supply from a single power source
If a field multiplexer station is to be supplied from a shared 24 V DC supply (U
MUX
, U
S
and
U
M
), three cable jumpers must be inserted for this purpose (Figure 7-3 on page 54).
3.4.3 Alarm contact
The field multiplexer has a floating alarm output (Alarm_IN and Alarm_OUT contacts at
connector 3, see Figure 3-6 on page 22) that allows to indicate operating errors remotely.
The contact is normally open, but it is closed in the event of an error and when the field
multiplexer power supply fails.
CONF
FO
DATA
GND
DATA
Shield Shield
GND
DATA
Connector 1
DATA
Connector 2 Connector 3 Connector 4
Alarm_IN Alarm_OUT
U
MUX
U
MUX
GND
MUX
GND
MUX
CONF
MA
U
S
U
S
U
M
U
M
GND GND
FE FE
5981B040
CONF
FO
CONF
MA
ACHTUNG:
In this case there is no electrical isolation between U
MUX
and U
S
/ U
M
.
Notes on the current carrying capacity of the alarm contacts can be found in the technical
data in the Appendix.