Panasonic EBL512 G3 Planning Instructions page 26

Panasonic Eco Solutions Nordic AB
MEW01472 Rev: - Planning Instructions Fire alarm system EBL512 G3, United version 2.7.x
- The control unit (an algorithm) will now try to re-enable the first
isolator (sequence no. 0) in the A-direction. If this is possible the next
isolator (sequence no. 1 in the A-direction) will be re-enabled, if this
is possible. And so on. The isolator just before a short circuit cannot
be re-enabled.
- The control unit will now try to re-enable the first isolator (sequence
no. ?) in the B-direction. If this is possible, the next isolator, and so
on.
- Finally all isolators will be re-enabled except the isolator on each
side of a short circuit and any isolator(s) between two or more breaks
on the loop.
- Communication will be in both directions for 10 minutes. Then a
new "cycle" starts.
- If the "fault(s)" are corrected, the communication will return to be in
the A-direction only, else the communication will be in both
directions for another 10 minutes when a new "cycle" starts, and so
on.
Depending on if it is too low voltage on the loop, short circuit, one
break or two or more breaks, the fault messages will be different.

FAULT: Cut-off loop x, control unit xx
nn <-> SCI nn
NOTE! nn = A, 00, 01, 02, 03, 04, 05, 06, 07 or B.

FAULT: Short circuit loop x, control unit xx SCI nn <-> SC
NOTE! nn = A, 00, 01, 02, 03, 04, 05, 06, 07 or B.
If there are multiple loop faults, i.e. one or more short circuits and/or
one or more Cut-offs, there will be a "multiple COM loop fault"
message.

FAULT: Multiple faults, COM loop x,
control unit xx
The first fault message will show the first fault in the A-direction.
There will always be a "no reply" message for all units not found in
spite of communication in both directions.
 FAULT: No reply zone: xxx address xx
technical number xxxxxx
Regarding Fault acknowledge, see the EBL512 G3 Operating
Instructions MEW01473.
Regarding functions and fault messages for EBL512 (in a mixed
system), see EBL512 Operating Instructions MEW01457.
24
SCI