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5 Technical data
5.1.3.
The values for the HF, LF and alarm output can be taken from the certificate.
RS-485 data interface
U
min
68
U
(U
)
max
i
I
max
P
i
internal inductivity
internal capacity
Caution
A voltage of U
Note
The device can be supplied with power via the data interface when the RS-
485 interface is used.
Note
In an Ex version, the connection must only be made to a certified, intrinsic
safe current circuit.
The Ex-relevant connection values are specified in the approval.
Current loop connection
U
(min)
ext
U
(max)
ext
I
min
I
max
External resistance (max.)
Current output for
- minimum flow rate
- maximum flow rate
- alarm
Current output accuracy better than 1% of the end value
Manual TME400-VMF · EN02 · 2018 September 6th
Outputs
6.0 V
10.5 V
428 mA
900 mW
1320 LF
600 µH
(U
) higher than 10.5 V will destroy the data interface.
max
i
12 V
28 V
3.5 mA
23 mA
See: Figure 13: Load depending on feeder supply
4 mA
20 mA
3.5 mA or 21.8 mA
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