Dear all .. i seek your support especially those with experience in autrosafe from autronica systems fire panels
I have problem with one sounder running all time and can't silence from panel.. the fault is sounder driver not responding.. the loop as follow ..loop module bsd-310 then autrokeeper bn-180 then the sounder and beacons and smoke detectors.. each device connected to bn-300 .. only the sounder have driver fault.. and bn-180 is in raising mode .. what is the driver for the sounder is it bn-300?

 

Is there an interposing relay whose contacts are stuck closed?

 

Is there an interposing relay whose contacts are stuck closed?

The sounder is connected to interface module bn-300

 

I have no background in fire alarms.

In process systems, the annunciated output of a latched alarm (a horn, for example) can usually be silenced by acknowledging the alarm, which disables the driver circuit to the annunciator. However, if the alarm state remains 'active' over some period time after the horn being silenced, many systems allow for reflashing the annunciator output to turn the horn back on again.

Whether the output has failed in the ON state or whether the alarm cannot be silenced because of decisive logic in the alarm system needs an authority that particular alarm system. But the alarm message shown on the screen shot leads me to believe that the alarm cannot be silenced because the conditions for silencing have not been met. I doubt an alarm system has sensors embedded to detect a failed output, but I could be wrong.

 

I have no background in fire alarms.

In process systems, the annunciated output of a latched alarm (a horn, for example) can usually be silenced by acknowledging the alarm, which disables the driver circuit to the annunciator. However, if the alarm state remains 'active' over some period time after the horn being silenced, many systems allow for reflashing the annunciator output to turn the horn back on again.

Whether the output has failed in the ON state or whether the alarm cannot be silenced because of decisive logic in the alarm system needs an authority that particular alarm system. But the alarm message shown on the screen shot leads me to believe that the alarm cannot be silenced because the conditions for silencing have not been met. I doubt an alarm system has sensors embedded to detect a failed output, but I could be wrong.

Of course you are wrong.. you can't just guess since you don't have experience in this system and you even don't have in fire alarm systems.. there's no sensor in fault right now so your guessing is wrong.. hope someone help

 

Dear Mahmoud,

The BN‑180 sits between the loop controller (BSD310) and the detection loop, giving the controller access to the loop. The BN‑300 input unit interfaces signal devices to the detection loop. With the BN‑300, the loop controller can detect loop faults. The loop controller also monitors and drives the sounders, the sounders are addressable, so the controller knows each sounder’s exact location.

Hope that helps.

 

Dear Mahmoud,

The BN‑180 sits between the loop controller (BSD310) and the detection loop, giving the controller access to the loop. The BN‑300 input unit interfaces signal devices to the detection loop. With the BN‑300, the loop controller can detect loop faults. The loop controller also monitors and drives the sounders, the sounders are addressable, so the controller knows each sounder’s exact location.

Hope that helps.

Thank you for your reply.. sounders and beacons are connected to bn 307 ..if the fault is in the driver and can't silence sounder .. does this mean the problem in bn 307 or the sounder itself?

 

Good question, Mahmoud.

From the loop controller’s perspective, all monitored channels must be healthy to clear the alarms. The fault could be in the BN‑307 or in a sounder on its loop, so check loop connectivity. If the loop is open the fault is likely a sounder, if the loop is intact, suspect the driver. Also check the end‑of‑line register values on the loop, should be 2kohm (+/- 5%).

Good Luck!