ATR620 - Logitron

34 Application on industrial kilnsController ATR620 has a wide range of applications on industrialkilns, environmental chambers, furnaces, dryers…Certainly some of the most common application fields areelectrical kilns for ceramics, glass, metalworking. Below someexamples with a short list of main configuration parameters.35 Kiln with single thermocouple and SSR controlThis is probably the most typical application of controller ATR620,using only main capabilities of the unit and still keeping high userfriendliness..On electrical kilns ATR620 performs control loop for theprogrammed cycle reading thermocouple value and controllingSSR. In case that alarm conditions, as overshooting of max.temperature, are noticed relay A1 is activated to open the circuitwith safety contactor, along with acoustic signal of internal buzzerand a flashing signal on display. Should the kiln door accidentallyopen, this is also an alarm condition: cycle is stopped and acorresponding message is visualized on display.Programming of main parameters:P-01 0009 15 cycles available, 20 steps eachSpecial functions are desabledP-02 1000 Select thermocouple K (ex.:1100 for TC typeS)P-05 5000 Select SSR control output for process 1P-06 0 Minimum temperature (lower limit scale) 0°CP-07 1350 Max. temperature (upper limit scale) 1350°CP-12 1101 Max. temperature alarm with cycle blockP-15 1300 Alarm setpoint: if kiln temperature is over 1300°C,the cycle is stopped.P-17 5100 Alarm on digital input for cycle block and signal“Open door”94