Appendix B – Power
asafeinstall_dgb, AutroSafe Interactive Fire Detection System, Release 4,
116-P-ASAFE-INSTALL/DGB, Doc-1004796-2, 2021-08-23, Autronica Fire and Security AS
Page 83
16.13 Fault Relay Watchdog J26
The fault relay on the BSF-400 board has its own watchdog. If the CPU
stops for any reason the watchdog will turn over the fault relay if it is not
fed within 1 second.
If for any reason the BSF-400 restarts, it takes 5 seconds before the
fault relay is in the correct position:
• J26.4 (normally open contact): closed contact when the unit is
not
• supplied with power or there is a fault on the unit
• J26.5 (normally closed contact): closed when no faults exist
• J26.6 (common): common for fault relay
Note that the fault relay will not be turned over for communication faults
on the AutroFieldBus.
The green and red LED beneath the cover are indicators for AFB-RX
and – TX. Hearbeat is indicated when these LEDs are blinking
simultaneously. Rapid blinking indicates heavy traffic on the
AutroFieldBus. If the red LED is weak and the green one is not lit, there
is no communication between the BSF-400 board and the
AutroFieldBus.
LED number / Colour
Blinking LED if there exist one or more internal faults
on the BSF-400. This includes temperature on the
BSF-400 out of bounds.
Internal faults are mostly PCB errors. This LED
blinks in a much faster cycle than the others.
c name (E-68)
Description
All blinking LEDs, except where otherwise stated, will blink with 0,5
seconds ON and 0,5 seconds OFF.
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