Flexim FLUXUS G800, Руководство пользователя

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FLUXUS G80x 7 Installation of FLUXUS G801
48 UMFLUXUS_G8V4-6-1EN, 2018-10-10
7.7.1 Intrinsically Safe Current Output Ex ib
The current output may be fed with max. 28.2 V DC/0.76 W.
If the transmitter is disconnected from the power supply during the measurement:
• the passive current output continues being powered thanks to an external power supply
• the last measured value is output.
In order to check the function of the transmitter:
• the binary output is installed and activated
• the binary output is used as an alarm output.
For the installation and activation of the binary output see chapter 18.
Recommended configuration of the alarm output
If the transmitter is disconnected from the power supply, the binary output indicates an alarm state.
RS485
G801**-A10****-*A
G801**-A10****-*P
14 (A+)
13 (B-)
120 Ω
termination resistor
shield 15
Tab. 8: Circuit of the current output Ex ib
output transmitter external circuit remark
internal circuit connection
passive
current loop
Ex ib
G801C24
I1: 2 (+)
I1: 1 (-)
U
i
= 28.2 V, P
i
= 0.76 W
U
ext
= 4...28.2 V
U
ext
> 0.021 A . R
ext
[ Ω ] + 4 V
example:
U
ext
= 12 V
R
ext
≤ 380 Ω
binary output
(open collector)
G801C24
B1: 6 (+)
B1: 5 (-)
U
i
= 28.2 V, P
i
= 0.76 W
U
ext
= 5...28.2 V
R
c
[k Ω ] = U
ext
/I
c
[mA]
I
c
= 1...4 mA
R
ext
is the sum of all ohmic resistances in the circuit (e.g., resistance of the conductors, resistance of the amperemeter/voltmeter).
func
(switching condition)
ERROR
type
(holding behavior)
HOLD (NON-HOLD)
mode
(switching function)
NC CONT.
Tab. 7.7: Circuits of the outputs
output transmitter external circuit remark
internal circuit connection
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
U
ext
+
+
-
R
c
U
ext
V
+
-