Endress+Hauser Prosonic S FMU90 - Connection of the Separate Display and Operating Module; 3.10 Potential Equalization

Prosonic S FMU90 Flow Measurement PROFIBUS Wiring
Endress+Hauser 25
3.9 Connection of the separate display and operating module
L00-FMU90xxx-04-00-00-xx-005
1 Connection of the display plug with the cable (3 m (9.8 ft))
For the version of the Prosonic S with a separate display for panel mounting, a pre-assembled
connecting cable (3 m (9.8 ft)) is supplied. The cable must be connected to the display plug of
the Prosonic S.
3.10 Potential equalization
3.10.1 Potential equalization in the field housing
Display
POWER
HART
0/4…20mA
Sync
Fuse
I
1
FDU-
Sensor
RD
11
BK
10
YE
9
40
39
5
4
6
7
8
Service
Relay
3
2
1
1
Minimum diameter for cable bushing: 20 mm (0.79 in).
WARNING
!
Limitation of electrical safety.
‣ The protective conductor (GNYE) 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). The
metallic terminal block (1) in the field
housing can be used for this.
L00-FMU90xxx-04-00-00-xx-006
1