Single Loop And Double Loop - Siemens SLD4 Application Notes

Classification Setups
To ensure normal operation the user should check that there are no loop faults or other unex-
pected SLD4 faults (status codes). After clicking refresh a few times the status codes display
should be blank.
Figure 15 : Loop Status
7.3.

Single Loop and Double Loop

There are extensive options available which allow classification in both single loop and dou-
ble (paired) loop modes. Double loop classification supports multiple vehicle classes, typically
single loop classification can only distinguish between a couple of vehicle classes (e.g. large
vehicles and small vehicles.
Loop Detector Application Notes SLD4
667/HQ/45200/101
Figure 14 : Loop Frequency
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