Endress+Hauser Levelflex FMP55 - Page 41

Levelflex FMP55 HART Electrical connection
Endress+Hauser 41
Terminal assignment 4-wire: 4-20 mA HART (90 to 253 V
AC
)
3
1
+
L
4
2
-
N
1
3
2
A0036519
 16 Terminal assignment 4-wire: 4-20 mA HART (90 to 253 V
AC
)
1 Connection 4-20 mA HART (active): terminals 3 and 4
2 Connection supply voltage: terminals 1 and 2
3 Terminal for cable screen
L
CAUTION
To ensure electrical safety:
‣
Do not disconnect the protective connection.
‣
Disconnect the supply voltage before disconnecting the protective earth.
Connect protective earth to the internal ground terminal (3) before connecting the
supply voltage. If necessary, connect the potential matching line to the external
ground terminal.
In order to ensure electromagnetic compatibility (EMC): Do not only ground the
device via the protective earth conductor of the supply cable. Instead, the functional
grounding must also be connected to the process connection (flange or threaded
connection) or to the external ground terminal.
An easily accessible power switch must be installed in the proximity of the device. The
power switch must be marked as a disconnector for the device (IEC/EN61010).