Dat
e
of
iss
u
e
1
1
/30/
07
805639
HART Loop Converter KFD2-HLC-(Ex)1.D(.**)
Installation and connection
8
5.2.1 Connection input (field circuit)
The intrinsically safe field circuit is connected to the
blue
terminals 1 to 6 on the KFD2-HLC-Ex1.D(.**).
This may be conducted using DIN EN 60079-14-compliant leads into the hazardous area.
You can connect the following three operating modes:
1. any separately powered HART loop with a transmitter or positioner in a parallel circuit (as with
HART handheld terminals, terminals 2 and 3)
2. an active HART-compatible mA source, e. g. a separately powered HART transmitter (terminals 2
and 3, bridge between terminals 5 and 6)
3. a 2-wire HART transmitter (HART transmitter with analogue 4 mA ... 20 mA output signal) powered
by the HLC (terminals 1 and 3, bridge between terminals 4 and 5)
KFD2-HLC-Ex1.D
1+
2+
3-
4
5
6
7-
8+
9-
14-
15+
13+
20
21
19
Zone 2
Div. 2
24 V DC
23+
24-
22
Power Rail
24 V DC
ERR
HART
HART
+
-
HAR
T
+
-
HAR
T
+
-
-
+
+
-
-
+
+
-
-
+
II
III
I
Zone 0, 1, 2
Div. 1, 2
1
2
3
