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Re: B3 won’t switch off


 

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Imran,

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Thanks again for your help here. Felder have provided me with the attached, which may be the correct schematic, but my machine is 2014 and this schematic is from 2019. The chap from Felder mentioned he thought it might be the brake board. I’m not sure if my B3 has a brake, I can’t say I’ve used a saw that does, and mine (when it does decide to shut off) doesn’t seem to spin down any slower than the other table saws I have owned which most definitely didn’t have a brake.

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Anyway, he mentioned this…

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I have picked up your ticket with regards to your hammer B3P and looking at the information on the ticket I would suggest the brake board is being temperamental and needs to be looked at.

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The brake board is labelled up either 1B1 or 2B1 and is shown on the attached wiring diagram, there is a small led light on this and I would be interested to see what that light is doing. Stable or flashing.

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The reason I don’t think this is anything to do with the brake (even if I have one) is that I’d expect there to be an NVR switch/circuit in a machine of this quality, and whilst I appreciate that once running, if there was a brake then that could possibly impede the shutdown, I’d also expect that removing the power entirely and then plugging it in again would not make the saw start up again.

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Anyway, I’ve attached the schematic and if I do happen to get another one I’ll pass that on.

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Cheers,

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Morgan

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From: [email protected] <[email protected]> On Behalf Of imranindiana via groups.io
Sent: 29 January 2025 17:29
To: [email protected]
Cc: [email protected]
Subject: Re: [FOG] B3 won’t switch off

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Hi Morgan,

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I should have also mentioned that if your machine is out of warranty, you can purchase the relay online by using the PN on the relay. The PN should also be in the wiring diagram. There are coupon reasons to consider this. The potential price delta and the time it might take for you to receive the part.

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It is also easy to confirm the stuck contacts once I am able to see the electrical docs. Can be done safely with power removed.

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Imran Malik

IAM Wood Creations


On Jan 29, 2025, at 11:52?AM, Morgan Skinner via groups.io <morgan@...> wrote:

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Thanks Imran - I’ve decided against using my multimeter here as looking at the wiring at the switch and the gauge of wire used, I’d be surprised if it was anything but mains voltage.

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Cheers,

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Morgan



On 29 Jan 2025, at 15:38, imranindiana via groups.io <imranindiana@...> wrote:

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I agree with Brian on sticking relay but want to caution you (if you are probing) that some Hammer machines do run line voltage to the switches. This was discussed before here:

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The older hammer machines have a schematic with 24VAC safety circuit like Felder but based on only 2 accounts it seems that the Hammer has line voltage going to switches.

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The older machines with low voltage circuit, that I have come across, have electrical cabinet like Felder. The newer Hammer machine has all electrical stuffed in a box and the 2 machines I have come across with line voltage switches (one in USA the other abroad) were of this design.

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Imran Malik

IAM Wood Creations

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