IFM SUH320 handleiding
Handleiding
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Ultrasonic flow meter without display SUHxxx
© ifm electronic gmbh 11661449 / 01 07 / 2025 23
10.2.2 Switching signal Diagnosis
The unit features an integrated diagnostic function. When using the diagnostic function, the output is used
exclusively for diagnostic message output, which it indicates by a switched signal.
The switching output is switched on in normal operation (normally closed). If the device detects a
diagnostic case, the output will be switched off.
Diagnostic cases include:
▪ Reversal of the direction of flow [ 23]
▪ Low signal quality/ no signal [ 23]
10.2.2.1 Switching signal for flow direction
A flow direction change can be monitored by providing a switching signal.
The output is switched on until the flow rate falls below the set minimum flow rate in negative flow direction
(-LFC)(1).
Then the following applies:
▪ The output switches ON when + LFC is exceeded (2).
▪ The output switches OFF when - LFC is not reached (3).
LFC = Low flow cut-off Low flow cut-off [ 32].
+ LFC
+ Q
t
0
- Q
- LFC
1
0
1 32
Fig.10: Monitoring of the flow direction by switching signals
+Q: Flow in positive flow direction
-Q: Flow in negative flow direction
+LFC: Minimum flow in positive flow direction
-LFC: Minimum flow in negative flow direction
An arrow with the text “flow direction” on the device indicates the positive flow direction. The direction of
the flow measurement can be reversed using the parameter Fdir.
Flow direction [ 32].
Parameters to be set:
oux = dOU; dFUx = direction of flow
10.2.2.2 Switching signal for signal quality
The unit can provide a switching signal when the signal quality deviates from normal operation.
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Productinformatie
| Merk | IFM |
| Model | SUH320 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 3639 MB |
