{"action":"created","issue":{"url":"https://api.github.com/repos/UnifiedEngineering/T-962-improvements/issues/106","repository_url":"https://api.github.com/repos/UnifiedEngineering/T-962-improvements","labels_url":"https://api.github.com/repos/UnifiedEngineering/T-962-improvements/issues/106/labels{/name}","comments_url":"https://api.github.com/repos/UnifiedEngineering/T-962-improvements/issues/106/comments","events_url":"https://api.github.com/repos/UnifiedEngineering/T-962-improvements/issues/106/events","html_url":"https://github.com/UnifiedEngineering/T-962-improvements/issues/106","id":199390373,"number":106,"title":"T-962C : fw 0.5.1 - heat profile issue ","user":{"login":"vmarguerie","id":24931552,"avatar_url":"https://avatars0.githubusercontent.com/u/24931552?v=4","gravatar_id":"","url":"https://api.github.com/users/vmarguerie","html_url":"https://github.com/vmarguerie","followers_url":"https://api.github.com/users/vmarguerie/followers","following_url":"https://api.github.com/users/vmarguerie/following{/other_user}","gists_url":"https://api.github.com/users/vmarguerie/gists{/gist_id}","starred_url":"https://api.github.com/users/vmarguerie/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/vmarguerie/subscriptions","organizations_url":"https://api.github.com/users/vmarguerie/orgs","repos_url":"https://api.github.com/users/vmarguerie/repos","events_url":"https://api.github.com/users/vmarguerie/events{/privacy}","received_events_url":"https://api.github.com/users/vmarguerie/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":11,"created_at":"2017-01-07T22:58:49Z","updated_at":"2017-09-30T14:45:35Z","closed_at":null,"author_association":"NONE","body":"Hi,\r\n\r\nI've made the modifications  (masking tape, grounding, cold junction, fan control) to my **T-962C** reflow oven.\r\n\r\nEven if i bake PCBs with pretty good result, i wonder why the oven does not succeed to follow the heat profile.\r\n![dsc_1468](https://cloud.githubusercontent.com/assets/24931552/21745790/cafb6452-d533-11e6-8cd9-7e9566f39011.JPG)\r\nWhen i did the hardware mods, i noticed some components were missing on the triac board \"t962-2 new2\". Is it normal?\r\n![dsc_1467](https://cloud.githubusercontent.com/assets/24931552/21745843/b094562c-d534-11e6-8198-f73b4b0d402d.JPG)\r\nThanks for your help. \r\n"},"comment":{"url":"https://api.github.com/repos/UnifiedEngineering/T-962-improvements/issues/comments/333313132","html_url":"https://github.com/UnifiedEngineering/T-962-improvements/issues/106#issuecomment-333313132","issue_url":"https://api.github.com/repos/UnifiedEngineering/T-962-improvements/issues/106","id":333313132,"user":{"login":"JohnWestlake","id":32409007,"avatar_url":"https://avatars0.githubusercontent.com/u/32409007?v=4","gravatar_id":"","url":"https://api.github.com/users/JohnWestlake","html_url":"https://github.com/JohnWestlake","followers_url":"https://api.github.com/users/JohnWestlake/followers","following_url":"https://api.github.com/users/JohnWestlake/following{/other_user}","gists_url":"https://api.github.com/users/JohnWestlake/gists{/gist_id}","starred_url":"https://api.github.com/users/JohnWestlake/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JohnWestlake/subscriptions","organizations_url":"https://api.github.com/users/JohnWestlake/orgs","repos_url":"https://api.github.com/users/JohnWestlake/repos","events_url":"https://api.github.com/users/JohnWestlake/events{/privacy}","received_events_url":"https://api.github.com/users/JohnWestlake/received_events","type":"User","site_admin":false},"created_at":"2017-09-30T14:45:35Z","updated_at":"2017-09-30T14:45:35Z","author_association":"NONE","body":"Mike,\r\n\r\n1.These measurements where made with the thermocouple mounted against the PCB (although maybe 1-2mm above the board so not physically in contact with it.\r\n\r\n2. Custom profile run with the ORIGINAL software.\r\n\r\n3. Larger oven T962C\r\n\r\nThe point of the post was to demonstrate that even at 100% duty cycle, the ovens thermal heat output is very weak hence the extended cycle times (Slow ramp speeds).\r\n\r\nAs I mentioned - performing the Ramp test cycle on the upgraded software and the T962C only managed to reached about 185DegC after 4 minutes before the test started the downward ramp cycle.\r\n\r\nI wonder if the incorrect \"timebase\" of the original software was to compensate for the slowness of the ovens heating cycle due to its lack of thermal output power.\r\n\r\nI'll try playing with my custom profile with the new software - basically extending the cycle times to allow the oven to ramp up to the required speed (now that the timebase error has been corrected).\r\n\r\nI worry about the reflow time (183DegC to 225DegC (max)) as they say for leaded solder 90secs max (the solder in \"molten\" state) as the oven just does not have the power to do this!\r\n\r\nI'm no expert on reflow ovens / process so am learning as I go, please don't take everything I say here as fact..."}}
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