Electrical Connection; Connecting Requirements; Terminal Assignment - Endress+Hauser Levelflex FMP55 Operating Instructions Manual

Levelflex FMP55 FOUNDATION Fieldbus
Endress+Hauser
7

Electrical connection

7.1

Connecting requirements

7.1.1

Terminal assignment

Terminal assignment, 4-wire: 4 to 20 mA HART (90 to 253 V
2
1
 8 Terminal assignment, 4-wire: 4 to 20 mAHART (90 to 253 V
1 Connection 4 to 20 mA HART (active): terminals 3 and 4
2 Connection, supply voltage: terminals 1 and 2
3 Terminal for cable shield
CAUTION
L
To ensure electrical safety:
‣
Do not disconnect the protective ground connection.
‣
Disconnect the device from the supply voltage before disconnecting the protective
ground.
Connect protective ground to the inner ground terminal (3) before connecting the
supply voltage. If necessary, connect the potential matching line to the outer ground
terminal.
In order to ensure electromagnetic compatibility (EMC): do not ground the device
exclusively via the protective ground 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).
Electrical connection
)
AC
3
)
AC
A0036519
33