BSD-340-user-guide-eng, Doc. 1004474-2, 2020-09-18,
Autronica Fire and Security AS
Page 24
8. Troubleshooting
8.1 Open loop and short circuit on the same loop may end up in infinite
disable/enable.
In this situation, open the loop at one end. Raise loop to isolate break/SC. Reconnect the first and
disconnect the other end, and raise loop to isolate break/SC. Disconnect cabling before SC.
Reconnect both ends and raise loop. Detectors between the two breaks in loop will be
unavailable.
8.2 Parameter fault on loop unit
Parameter fault on loop unit after initialization/loop enable: Disable/enable loop unit. It is not
necessary to disable/enable loop.
8.3 Enable loop without saved topology
Since manual enable of a loop, without a saved topology, implies acceptance of start-up message
from loop units with a different loop ID, enabling loops with crosstalk between them may give
open loop, illegal topology, branch on loop, etc. Hence enabling such loops at the same time is
not recommended.
8.4 Memory fault after initialization
Memory fault may occur if no topology is saved (Memory fault (32)) or if crosstalk level is so high
that loop raise has been destroyed. In both situations, try manual disable/enable of actual loop.
8.5 Open loop after initialization
Open loop after initialization may a result of crosstalk. Try manual disable/enable of actual loop
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