Protective Ground Connection - Endress+Hauser Proline Prosonic Flow 91W Brief Operating Instructions

Wiring
e
i
Fig. 25: Connecting the transmitter (aluminum field housing). Cable cross-section: max. 2.5 mm
a Electronics compartment cover
b Cable for power supply: 85 to 250 V AC, 11 to 40 V DC, 20 to 28 V AC
Terminal connector for power supply: No. 1–2 ä 28 (terminal assignment)
c Ground terminal for power supply cable
d
e Signal cable
Terminal connector for signal cable: No. 24–27 ä 28 (terminal assignment)
f Ground terminal for signal cable
g
h Service connector
i Ground terminal for potential equalization
4.2.1 Terminal assignment
24 (+)
Pulse output
4.3

Protective ground connection

The sensor must be connected to the protective ground of the plant.
The plant grounding guidelines must be taken into account.
28
b e
a
Terminal No. (wiring diagram å 25)
25 (–) 26 (+)
HART current output
Proline Prosonic Flow 91W
e
b
f
g
24 25
h
+ –
27 (–) 1 (L1/L+)
Power supply
b
c
d
26 27 1 2
+ –
L1
N
(L+)
(L-)

A0005838
(AWG 14)
2 (N/L–)
Endress+Hauser