Synchronizing Connection
If several sensor lines are to be routed
parallel over long distances, up to 20
devices can be connected over the
synchronizing connection. If there more
than 20 units, groups of max. 20 units
must be built.
With units within a group, the sensor
cables must run parallel. The lines from
each groups must always be laid
seperately.
80 81 827063 7164 90 91 92
YE YERD RD
L+ L-
L1 N
L+
L-
20...30VDC
24VAC;48VAC
115VAC;230VAC
L1
N
PE
0/4...20mA
Sync.FMU
0/4...20mA
Temp.
1
23 4 5
67
3111 21
41
2134
5
51 60
3212 22
42
52 61
3313 23
43
53 62
Sensor1
Liquiphant
Soliphant
Sensor2
2
for FMU 862
only
termnals fitted to
the version with
5 relays only
for FMU 862
only
Terminal strip of the
FMU 860...862.
The electrically isolated
areas are separated by
thick lines
RS-485
BA
RxD/TxD-P
RxD/TxD-N
GND
RS-485
11 31
41
345
51
12 32
42 52
13 33
43 53
Modified terminal strip
for the Prosonic RS
485, only as version
with three relays
60
60
61
61
62
62
24 V
24 V
PNP
e.g. Liquiphant maker or breaker
(passive)
maximum short
circuit current 20 mA
Separate switching
input, e.g. for Liquipant
or Soliphant or a
passive external limit
switch
FMU 86…
FMU 86… FMU 86…
63
63
6364
64
64
… max. 20 units
Connection for up to 20
instruments using a
synchronisation link
11
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