Flexim FLUXUS H721 - Page 82

7 Connection
7.3 Outputs FLUXUS H721
2022-05-15, UMFLUXUS_H721V1-5EN
82
passive current output/HART current output
U
ext
= 8…30 V
U
ext
> 0.024 A
.
R
ext
[Ω] + 8 V
example:
U
ext
=30V
R
ext
≤ 900 Ω
HART
U
ext
= 10…24 V
switchable current output
All switchable current outputs
are jointly switched to active or
passive in the menu item
Special functions\
Outputs.
active current output
U
int
= 15 V
R
ext
< 250 Ω
passive current output
U
ext
=8…30V
U
ext
> 0.024 A
.
R
ext
[Ω] + 8 V
example:
U
ext
=30V
R
ext
≤ 900 Ω
voltage output R
int
= 500 Ω
R
ext
>2MΩ
If R
ext
is smaller, the accuracy
is less than specified.
frequency output
TF7-
*721**-******-******a-*****-**
a = U, V, D
U
ext
=5…24V
R
c
[kΩ]=U
ext
/I
c
[mA]
I
c
= 1…4 mA
R
int
= 66.5 Ω
Tab. 7.11: Output circuits
output transmitter external circuit explanation
internal circuit connection
The number, type and connections of the outputs depend on the order.
R
ext
is the sum of all ohmic resistances in the circuit (e.g., resistance of the conductors, resistance of the ammeter/voltmeter).
Px+
Px-
mA
U
ext +
-
ƒ
G
Px+
Px-
ƒ
G
U
ext
mA
-
+
+
-
Px+
Px-
+
-
mA
Px+
Px-
mA
U
ext
+
-
R
int
Px+
Px-
+
-
V
R
int
Px+
Px-
R
c
V
U
ext
+
-