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 82
70
63
71
64
90 91 92
YE
YE
RD
RD
L+ L-
L1 N
L+
L-
20..
.30
VDC
24
V
A
C;
48
V
A
C
115
V
A
C;
230
V
A
C
L1
N
PE
0/4.
..
20
mA
Sync
.F
MU
0/4.
..
20
mA
T
emp
.
1 2 3
4 5
6 7
31
11
21
41
2
1
3
4
5
51
60
32
12
22
42
52
61
33
13
23
43
53
62
Sensor
1
Liquiphant
Sol
iphant
Sensor
2
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
B
A
RxD/Tx
D-P
RxD/Tx
D-N
GND
RS-485
11
31
41
3
4
5
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
63
64
64
64
… max. 20 units
Connection for up to 20
instruments using a
synchronisation link
11
