Prosonic S FMU95
Wiring
E Hauser
27
4.8.2
Potential equalization for the DIN-rail hosuing
If the DIN-rail housing is used, the potential equalization must be connected in the cabinet, e.g. at
a metallic DIN rail:
#
Warning!
The grounding line of the sensors FDU91F/93/95/96 and FDU83/84/85/86 must be connected
to the local potential equalization system
after a maximum of 30 m (98 ft),
(
L00-FMU95xxx-04-00-00-xx-010
1
Terminal (isolated from the DIN rail)
2
Protective earth terminal (with contact to the DIN rail)
3
Protective ground via DIN rail
"
Caution!
The signal evaluation electronics and its direct connections (display interface, service interface etc.)
are galvanically isolated from the supply voltage and the communication signals. Their electric
potential is identiacal to the potential of the sensor electronics.
Pay attention to the potential difference if the sensors are connected to ground!
!
Note!
• The longest required distance has to be taken into account when removing the jacket of the sensor
cable (GNYE in the above example).
• When shortening the sensor cable, comply to the notes
90 … 253 VAC
10.5 … 32 VDC
FMU95
Address
T
erm.
DP
of
f
on
of
f
on
SW
HW
1
2
3
4
5
6
7
8
1
2
3
4
A(N)
66
B(P)
65
Display
POWER
Sync
Fuse
40
39
Service
3
2
1
11
10
9
1
FDU-Sensor
YE
BK
RD
14
13
12
2
YE
BK
RD
17
16
15
3
YE
BK
RD
20
19
18
4
YE
BK
RD
23
22
21
5
YE
BK
RD
26
25
24
6
YE
BK
RD
29
28
27
7
YE
BK
RD
32
31
30
8
YE
BK
RD
35
34
33
9
YE
BK
RD
38
37
36
10
YE
BK
RD
FDU-Sensor
GNYE
FDU91F/93/95/96
(FDU83/84/85/86)
GNYE
PE
PE PE
FDU91F/93/95/96
(FDU83/84/85/86)
L
N
1
2
3
