Posted Sun Dec 15, 2013, 7:46pm Subject: Hottop B 2K Stored Profile ?
So I do a roast. Store the profile after cooling in AD1. Now next time I use this profile, can I make adjustments (on the fly) to the stored profile parameters? And will it revert back to the original stored parameters when called for by the profile? ex. at 8min T=80% (for 2 more min) through 10min. then drop to T=60% at 10 min. Lets say that at 8min I bump it up to T=90% and leave it there. Would it go back and drop to T=60% at 10min? or, am I back to full manual control from that point on for both fan and temp.
I have read the manual and the 2K profiling supplement manual and could not find anything that answers my question. It does however say that a modified stored profile can be stored in another bank.
rmongiovi Senior Member Joined: 7 Feb 2006 Posts: 394 Location: Atlanta, GA Expertise: I like coffee
Grinder: Ditting KR805 Drip: Technivorm; Bonavita... Roaster: Hottop B
Posted Sun Dec 15, 2013, 11:35pm Subject: Re: Hottop B 2K Stored Profile ?
If you make a change to the fan speed all subsequent fan speed changes in the profile are cleared. Likewise with the heater setting.
When I want to start fresh with a new bean, as soon as the preheat ends I adjust both the fan and heater one step and then back. Since I don't drop until about 215F, that leaves me with a clean slate on which to create a new profile.
It sure would be nice if they documented this in the manual. As a programmer I have all sorts of questions about how it saves profiles. What is the maximum number of changes that can be stored? Are the changes keyed by time or temperature? I could probably figure some of this out by experimentation if I weren't so lazy, but I'm not interested in sacrificing a roast just to explore how the HT operates.... Roy
Posted Mon Dec 16, 2013, 10:04am Subject: Re: Hottop B 2K Stored Profile ?
Thanks for the reply. It is what I figured. I was just hoping that I can play with a parameter for the duration, then it reverting back to the program. I guess one way to find out for sure is to do a dry run of the profile and see what happens and how it changes things.
Posted Mon Dec 16, 2013, 11:40am Subject: Re: Hottop B 2K Stored Profile ?
From my experience, profiles are implemented on a time priority. So if you set the temp to 80% at 3:45, it will set the temp to 80% ay 3:45 every time regardless as to what the temperature is at that point. That is a guess as I have never actually tested it. I have no specific data or information since I have used a saved profile and just let it run to see how well it was duplicated. I always manually manipulated the profile I was using at any given time. Given all the variables in any given roast (bean mass, density, ambient temp, line voltage, air filter age, etc.) I would say that the way profiles are run that they are more for someone who is satisfied with just "pretty close" and not looking for "perfection." Anyone serious about roasting would still be there to fine-tune any roast regardless as to the profile.
To complicate matters, the factory has changed the programming on the various iterations of the "B" roaster along the way. As an example, I had a B control panel that would not save a "blank" profile (one that would run fan and heat at 100% for the entire time and then save that profile. That srot of profile is used as the base profile for Roastlogger which would override those settings using the HTC+TC4C boards. In some models it is possible to run that (100% fan + 100% heat + full time) for about two or three minutes (iirc), then eject, then save, and it would run that way for the entire programmed time. On one B panel I had it drove me crazy trying to figure out why it would not save it.
It is interesting to hear that a fan of heat change at any point causes the control system to ignore subsequent pre-programmed profile changes. I never tested that myself.
That is precisely the intent here. I would use a stored profile that got me what I wanted with a given bean. Then later be able to use the same for the same bean and have the ability to compensate at various stages if need be briefly until the next programed parameter kicks in. I still have not had a chance to do a dry run and try to see what happens, but I should be able to before this weekend and will report my findings FWIW.
Posted Tue Dec 17, 2013, 9:11pm Subject: Re: Hottop B 2K Stored Profile ?
I can also confirm that if you make any changes after roast timer starts you have to continue to manually control the roast. And I also believe what Randy said about roast profile, that it is based on time only from my exp. not temp.
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