Old controller (ATR 620) I can’t program the rate per hour!

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  • #10018
    Siobhan Smith


    II have a ATR 620 controller which does temperature and time, but not rate per hour.

    I think I’ve almost worked out how to do it, for example, taking the soft fuse program. Segment one & two is:

    1) rate: 300,  target temp: 900,  Soak: 15 (estimated seg time 3:00)
    2) rate: 500,  target temp: 1100,  soak: 00 (estimated seg time :24)

    So, with my controller I’d have to do

    1) temp: 900 time:2:45
    2) temp: 900 time:0:15
    3) temp: 1100 time: 0:24

    And so on… two questions, firstly, I want to make sure I’m calculating the rate correctly. If I’m at 1100 and need to get to 1250 at a rate of 100 ‘f/hr. I just want to make sure i’m translating this correctly into my system.

    Also, when I need to come up to temperature (or down) AFAS do I just put 0:00? For example

    4) rate: 9999 target temp: 1420 soak:15min
    5) rate 9999 target temp: 960 soak:30min

    I put:

    temp: 1420 time: 0:00
    temp 1420 time: 15min

    temp: 960 time: 0:00
    temp: 960 time: 30:00

    I hope these question makes sense. I really need just the basic how to. I have the manual for the ATR 620 controller, but it doesn’t make sense to me. And I don’t know enough about firing schedules to feel confident I’m programming it in correctly. I hope to get a more up to date controller but as with everything, it costs! If anyone can help me out, I’d be most grateful (it’s also confusing because as a Brit I work in Celsius). :)

    Kind regards




    You can download the user manual for this controller here:


    Also, there is an Excel spreadsheet on this site that does the math for you. Click the “Tools” menu above and select Excel Firing Calculator.

    Helios Kiln Glass Studio


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