Signal Priorities - Burkert 8681 Operating Instructions Manual

Control Head Type 8681
LEDColorAssignments
Blinking patterns
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 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")
If position feedback signals overlap the following logic applies:
On principle, S4 has the highest priority, descending to S1 (i.e. S4 - S3 - S2 - S1).
S1 S2 S3
active active active
active
active active active
active active
ON OFF
250 ms 250 ms
450 ms 50 ms
50 ms 450 ms
125 ms 125 ms
1 s 3 s
S4 Fault Priority Note / blinking patterns
active S4
active S4
S3
S2
Note
permanent flashing in the fault color:
- Teaching does not occur
- Teach Reset implemented
- bus error
- Device Reset implemented
permanent flashing in the color for that position:
Signal from position 3
Internal Fault (fault color)
Service mode/manual control active
(fault color)
Signal from the external initiator S4
(same as "color for position 3")
Signal in fault color (and additionally
color of the corresponding valve position):
Service/maintenance notification (maintenance / service
required)
Blinking in S4 blinking pattern (if S4 has been acti-
vated by DIP) since S3/S4 has priority over S1 and S2
Blinking in S4 blinking pattern, if S4 has been acti-
vated by DIP
Blinking in S3 blinking pattern since S3/S4 position
has priority over S1 and S2
Position feedback of S2 has priority
English
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