Minerva 80

[sparkydom]

Hi,

A site I look after has a Minerva 80 Fire panl fitted.

2 of the Opticals ae showing a "Low Ident" faut at the panel. I have reset the point thresholds for both of these devices at the panel, but the faults are still present

Can anyone shed any light on the cause of this?

If anyone has a manual for this panel, I would be grateful for a copy if possible.

If anyone needs any info on Gent equipment, I should be able to help

Many thanks

Dom

[Guest Cerberus NI]

Hi,

A site I look after has a Minerva 80 Fire panl fitted.

2 of the Opticals ae showing a "Low Ident" faut at the panel. I have reset the point thresholds for both of these devices at the panel, but the faults are still present

Can anyone shed any light on the cause of this?

If anyone has a manual for this panel, I would be grateful for a copy if possible.

If anyone needs any info on Gent equipment, I should be able to help

Many thanks

Dom

Change them in the first instance.

Do a loop print out to see if anything else is low/high.Put fault to fast response as well to see if this flags anything!

You need to be making the customer aware that the clock is ticking on this system with regards to support - 2010.

[Bill]

Hi,

A site I look after has a Minerva 80 Fire panl fitted.

2 of the Opticals ae showing a "Low Ident" faut at the panel. I have reset the point thresholds for both of these devices at the panel, but the faults are still present

Can anyone shed any light on the cause of this?

If anyone has a manual for this panel, I would be grateful for a copy if possible.

If anyone needs any info on Gent equipment, I should be able to help

Many thanks

Dom

Blimey - didn't think there were (m)any of those still steaming on.

Low Ident faults are most usually down to a knackered line isolator - have you tried linking out the isolators either side of the heads to see if that cures the fault? It should do - you need to reinstate them one at a time to see which one is faulty.

How old are the devices?

What are the Compensation Values for the devices?

HAve you checked voltage levels?

I think it's already been pointed out, but the other aspect of this is that 2010 is the cut off for any further tech support from Tyco - your customer needs to be thinking about budgeting for an upgrade......

I have a number of Minerva Manuals - I think I have the service, install, commissioning(3), and comms manuals.....will dig 'em out and email them if you let me have your email.....

Regards,

[gla.ssfp]

Is 2010 the official date? Has anyone got this in writing?

I must admit I didnt know you could get tech support for Minerva

You should not really be reseting the point thresholds unless you fit a new detector !!

[Bill]

Is 2010 the official date? Has anyone got this in writing?

I must admit I didnt know you could get tech support for Minerva

You should not really be reseting the point thresholds unless you fit a new detector !!

Hi

Fairly sure it is - I'll see if I can dig out the bulletin - and I'll pdf it - if it didn't hit the bin.

You *can* - not that any of them seem to know very much about it beyond what's in the manuals any more.

Rgds,

[sparkydom]

Thanks for the replies,

Yes think we have quoted for a new panel/devices, but just wanted to know the score with these faults for my own knowledge

You say it could be down to the line isolators? didn't think of that!! will try that out next time im on site.

These are the only two devices with this fault, although had another with a High Ident, which cleared by itself.

The 2 devices are new, and one is on a new replacement addressable base

Still trying to get used to sepearte isolators, since so used to Gent, had one in every device.

Many thanks

[esp-protocol]

Low Ident faults are most usually down to a knackered line isolator - have you tried linking out the isolators either side of the heads to see if that cures the fault? It should do - you need to reinstate them one at a time to see which one is faulty.

Hello Bill,

Out of interest, how and why would a faulty line isolator cause a low ident fault on just a couple of devices ??

And by the way, there must be hundreds of these panels still chugging away, we've got about 20 on our books.....!!!

Dave

[Guest Cerberus NI]

I would check and change the one that had been showing high ident. Faulty line isolators can bring in multiple low idents but id expect more than just two between them. Stupid question but what are the heads on the system? You can replace a like for like 901 for a 501 but not a 401. Sorry if im trying to teach you to suck digs !

[Bill]

Hello Bill,

Out of interest, how and why would a faulty line isolator cause a low ident fault on just a couple of devices ??

And by the way, there must be hundreds of these panels still chugging away, we've got about 20 on our books.....!!!

Dave

Hi Dave

Low Idents are caused (typically, but not absolutely always) when a line isolator fails - honestly, at this point in time, I cannot remember why, electrically, it does this - probably most likely to do with a broken down component causing data misreads, if I recall correctly. From experience, one line isolator down could cause anything from one head to about ten to go into Low Ident depending on the layout of the loop.

I haven't come across an 80 in some time now - though I did rip a dead one out about eight months ago - absolutely no life in it as it had been hit by lightning - took out the panel, charger, several PSU's and also managed to melt three heads on a loop - messy.

Sounds like some nice project work coming up for you then.......

Regards,

[gla.ssfp]

You say it had adressable base??

Must be 500 series detectors then??

must say if its 500 then the base usually is the problem but you must make sure the correct detector is fitted or the ID will be incorrect which will show hi or lo ID fault !!

Have you tried a know good detector in the base of the faulty one?