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rpc out to hardinge dsm-59: transformer
see print attached--has both a rectifier(bottom right) and an arc suppressor between b1 and b2-same vde-8220 as machine print -not sure still about possible changes--but as you pointed out-the black transformer connected to b1 b2 is not original-and prvious owner when asked about any changes...- peter9150
- Post #17
- Forum: Transformers, Phase Converters and VFD
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rpc out to hardinge dsm-59: transformer
Talked with previous owner--never had work that he could remember--but it had been in his factory for 60 years-during dad's 'day'? who knows?-but after you pointed out how it looked out of place-and by looking at wiring diagram (which showed a missing rectifier as well as a missing arc...- peter9150
- Post #15
- Forum: Transformers, Phase Converters and VFD
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rpc out to hardinge dsm-59: transformer
connected without brake and all seems to run ok-forward, reverse,high and low-would still like to understand better brake connection before connecting -but will run machine as is -used as secondary work station -don't need (for now) for quick changing from forward to reverse--no power tapping- peter9150
- Post #13
- Forum: Transformers, Phase Converters and VFD
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rpc out to hardinge dsm-59: transformer
Because the brake solenoid may be a problem (may not be connected thru legs 1and 3) I'm thinking of simply trying the lathe without it-simply disconnecting the feed lines to the brake-- peter9150
- Post #12
- Forum: Transformers, Phase Converters and VFD
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rpc out to hardinge dsm-59: transformer
former owner (good friend --closed business-gifted to me this lathe and a bridgeport) is even more electrical blind than myself-so can't answer of helping to understand current layout--I still can't 'see' the power lines into the 'black' transformer in terms of which legs are being used-leg L1...- peter9150
- Post #11
- Forum: Transformers, Phase Converters and VFD
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rpc out to hardinge dsm-59: transformer
Yes Jim---to B1 and B2 wire ends that match that same way-- (not insulated nor crimped ends)at the 'black' transformer--and are probably not an original install B1 and B2 connect to 'black' questioned transformer--and two (only) lines on this transformer output travel to metal box type...- peter9150
- Post #9
- Forum: Transformers, Phase Converters and VFD
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rpc out to hardinge dsm-59: transformer
I think the sections differentiate between rough and more detail of same circuit?- peter9150
- Post #7
- Forum: Transformers, Phase Converters and VFD
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rpc out to hardinge dsm-59: transformer
Thanks Jim, have tried to check continuity of 'black' transformer on 'bottom' of cabinet -but till now have only done a 'quick' look. But your idea has me thinking--perhaps the placement on the bottom of the cabinet points to the idea of it being an added circuit -hence idea of looking for...- peter9150
- Post #6
- Forum: Transformers, Phase Converters and VFD
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rpc out to hardinge dsm-59: transformer
Thanks for helping.. I have been drying out the print--was coated with oil in the lathe door 'pocket'--sending the full shot here. I could follow the L1 and L3 lines going directly to the 'red transformer' and was hoping to understand (see)how the other transformer was either piggybacking from...- peter9150
- Post #3
- Forum: Transformers, Phase Converters and VFD
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rpc out to hardinge dsm-59: transformer
Hi All-new to this forum and need help with final hookup of rpc to hardinge dsm-59. I've plugged rpc in question to my bridgeport j-head to test before trying to connect to my lathe--the concern i have is about connecting my 'clean' 2 legs to the 110 transformer in lathe. From reading that I've...- peter9150
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- Replies: 16
- Forum: Transformers, Phase Converters and VFD