Endress+Hauser Prosonic S FMU90 PROFIBUS DP - Sensor Extension Cable

Electrical connection Prosonic S FMU90 PROFIBUS DP
34 Endress+Hauser
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
1
Service
Relay
2
1
GNYE
FDU91F/93/95/96
(FDU83/84/85/86)
3
1
L
N PE PE
2
90 … 253 VAC
10.5 … 32 VDC
3
4
A0032584
 28 Potential equalization of metallic sensors in DIN rail housing
1 Metal DIN rail in cabinet
2 Terminal strip (no contact to DIN rail)
3 Protective ground terminal strip (with contact to DIN rail)
4 Grounding via DIN rail
6.3.4 Sensor extension cable
L
WARNING
Explosion Hazard
‣
Use a terminal box to connect the extension cable.
‣
If the terminal box is installed in hazardous areas, comply with applicable national
requirements.
Extension cable specifications
• Maximum total length (sensor cable + extension cable)
300 m (984 ft)
• Number of wires
As per connection diagram
• Shielding
One shielding braid for the YE wire and one for the RD wire (no foil shield)
• Cross-section
0.75 to 2.5 mm
2
(18 to 14 AWG)
• Resistance
Max. 8 Ω per wire
• Capacitance, wire to shield
Max. 60 nF
• Protective ground (for FDU91F/93/95)
May not be within the shielding.
Suitable connection cables are available from Endress+Hauser (→  92).