Siemens SITRANS F M Intermag 2, Руководство по эксплуатации

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Operation
5-38
SITRANS FM Intermag 2 Flow Transmitter
Operating Manual - A5E00102775-03
At high inductive loads, the digital output must be protected against
transient overvoltage with a suitable external recovery diode.
The electronic fuse is tripped in the event of overloading. The
recovery time of the fuse is a few minutes. The relay contact is
open in the no-load state.
Digital input The digital input is available with the device variant 7ME5033-2xxxx
Menu item 4.3 (Hart communication and digital input). You have the following setting
options in this menu:
S
Function , menu item 4.3.1
By applying an external power supply, you can create a switching
input, for example using a switch (see also Figure 5-18). You have
the following possibilities depending on the configuration:
- Set the measured value to “0” (all outputs and displays are reset
to zero and the totalizers are stopped
- Reset the forwards totalizer
- Reset the reverse totalizer
- Reset the net totalizer
- Reset all totalizers
elektronische
Sicherung
Ri 3k
ext. Versorgung
max. 30 V
ext. Schalter
+
-
electronic fuse
ext. supply
external switch
11 ... 24 V
(max. 30 V)
4
3
5 V
Figure 5-18 Circuit diagram of digital input 2
S
Signal type, menu item 4.3.2
You can determine the signal type (high-active, low-active) with this.