Synchronization Line; Connection Of The Separate Display And Operating Module - Endress+Hauser HART Prosonic S FMU90 Operating Instructions Manual

Wiring
!
28
4.6

Synchronization line

• If wiring several Prosonic S, which are
mounted in a common cabinet and if the
sensor cables run in parallel, the
synchronization terminals (39 and 40) must
be interconnected.
• Up to 20 instruments can be synchronized in
this way.
• If there are more than 20 instruments, groups
must be formed, each containing a maximum
of 20 instruments. For the instruments within
each group, the sensor cables may run in
parallel. The sensor cables of different groups
must be seperated from each other.
• Usual commercial screened cable can be used
for synchronization
– max. length: 10 m between the individual
instruments
– cross section: 2 x (0.75 - 2.5 mm
– for lengths up to 1 m, an unscreened cable
can be used; for lenghts exceeding 1 m,
screening is required. The screen must be
connected to ground
• Instruments of the Prosonic FMU86x family
can be connected to the synchronization line
as well.
4.7 Connection of the separate display and operating
module
Fuse
HART
0/4...20mA
I
1
1
Relay
For the version of the Prosonic S with a separate display for panel mounting, a pre-assembled
connecting cable (3 m) is supplied. The cable must be connected to the display plug of the
Prosonic S.
Note!
Minimum diameter for cable bushing: 2 cm
Prosonic S FMU90 - flow measurement - HART
FMU90
1
2
3
4
5
6
Prosonic S
39 40
2
)
Sync
Service
Display
3 m
FDU-
Sensor
1
FMU90 FMU90
1 1
2 2
3 3
4 4
5 5
6 6
1 2 3 ...
Prosonic S Prosonic S
39 40 39 40
L00-FMU90xxx-04-00-00-xx-004
L00-FMU90xxx-04-00-00-xx-005
... 20