KROHNE BM 70 M - Manual (Page 29)

BM 70 M 29
Current output HART
®
, Ex e: Ex-i current output HART
®
:
Ex-i Current output HART
®
with switching
output:
Current output (non-communicable):
RS 485 version: PROFIBUS-PA or Foundation Fieldbus (FF)
32 31
-
+
42 41
Current
output
Switching output
max. 100mA/30V DCAC
Digital
input
82 81
- +
- +
5...28V=
4-20mA
max.500 Ω
32 31
-
Ex-i (IS)
+
+ supply unit
+
-
U max.= 30V
Current
output
4-20mA
U min.= 8V
Current-
output
Switching output
max. 110mA/30V
41 42 32 31
+ -
-
+
+ unit
U max.= 30V
4-20mA
U min.
= 8V
Ex-i-supply
32 31
Current
output
- +
unassigned
-
+
4-20mA
max.250 Ω
B B A A
RS 485
input
RS 485
output
32 31
Current
output
- +
-
+
4-20mA
max.250 Ω
32 31
Bus-
connection