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LED - Color Assignments
17.3. Signal priorities
If a valve has several overlapping states, the following priority list applies:
1. Internal Fault (fault color: 450 ms ON, 50 ms OFF)
2. Manual operating mode is active, e.g. by magnetic manual control - see Chapter "18. Service Mode / Manual
Control" (fault color: 50 ms ON, 450 ms OFF)
3. Service/maintenance notification or request (fault color: 1 s ON, 3 s OFF)
4. Other fault, e.g. position measuring system not taught, bus error or other (see Chapter "17.2. Blinking pattern
& fault signaling")
If position feedback signals overlap the following priorities apply:
Only the fields / colors highlighted in gray in the 3 examples below are reported back by LED display, regardless
of whether a signal is present (1) or no signal is present (0).
This means only the optical display (LEDs) for the positions (S1 ... 4) is subject to the priority control, whereas the
electrical signals are applied to the output (may also be several outputs simultaneously) according to the position
of the process valve.
Example 1: Position of the DIP switches (color combination): 0 0 0 0
S1 S2 S3 S4 Fault
green yellow
flashing green
(250 ms / 250 ms)
- red
S1 S2 S3 S4 Fault
0 0 0 -
1 0 0 -
0 1 0 -
0 0 1 -
1 0 1 -
0 1 1 -
1 1 0 -
1 1 1 -
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