Flexim FLUXUS F801 - Page 33

6 Installation of FLUXUS ADM 8027 FLUXUS ADM 8027, F801, ADM 8127B
UMFLUXUS_F8V4-6-1EN, 2018-10-10 33
Tab. 6.7: Circuits of the outputs
output transmitter external circuit remark
internal circuit connection
active current loop/
HART
ADM 8027
ADM 8027L
current loop
I1/I2: 2/4 (+)
I1/I2: 1/3 (-)
R
ext
< 500 Ω
current during transmitter error:
I
fault
≈ 0 mA
HART mode
I1: 2 (+)
I1: 1 (-)
U
int
= 24 V
current during transmitter error:
I
fault
≈ 0 mA
passive current
loop/HART
ADM 8027P
ADM 8027LP
current loop
I1/I2: 1/3 (-)
I1/I2: 2/4 (+)
U
ext
= 4...26.4 V
U
ext
> 0.021 A
.
R
ext
[Ω] + 4 V
example:
U
ext
= 12 V
R
ext
= 0…380 Ω
current during transmitter error:
I
fault
≈ 0 mA
HART mode
I1: 1 (-)
I1: 2 (+)
U
ext
= 10...24 V
current during transmitter error:
I
fault
≈ 0 mA
passive current
loop
Ex ia
ADM 8027C24a
ADM 8027LC24a
I1: 2 (+)
I1: 1 (-)
U
i
= 30 V DC
I
i
= 56 mA
P
i
= 0.42 W
U
ext
≤ U
i
U
ext
> 0.022 A · [Ω] + 7 V
≥ U
ext
/I
i
example:
U
ext
= 24 V
430 Ω ≤ R
ext
≤ 770 Ω
current during transmitter error:
I
fault
= 3.2…3.5 mA
The number, type and connections of the outputs are customized.
R
ext
is the sum of all ohmic resistances in the circuit (e.g., resistance of the conductors, resistance of the amperemeter/voltmeter).
+
-
mA
+
-
ƒ
G
U
int
+
-
ƒ
G
mA
mA
U
ext
-
+
ƒ
G
ƒ
G
mA
U
ext
-
+
mA
U
ext
-
+
R
ext
max
R
ext
min