ATR620 - Logitron

36 Kiln with 2 thermocouples and contactor controlOn bigger kilns it may be necessary to introduce more precise andaccurate control of internal temperature, for example in high kilnsheat may concentrate on the highest part, leading to a relevantgap of temperature between bottom and top levels. Correctplacement of heating elements and a double control loop canachieve uniform temperature for optimal firing cycle.In this configuration two outputs of ATR620 are configured ascontrol of two processes (corresponding to TC1 and TC2), thethird is available for alarm/auxiliary/event.Programming of main parameters:P-01 0009 15 cycles available, 20 steps eachSpecial functions are desabledP-02 1000 Select thermocouple K on input AN1, process 1P-03 1001 Select thermocouple K on input AN2, process 2P-05 1300 Select control output process 1 - 2 on OUT and A1P-06 0 Minimum temperature (lower limit scale) 0°CP-07 1350 Max. temperature (upper limit scale) 1350°CP-13 0000 Available for alarm / auxiliary / eventP-17 5100 Alarm on digital input for cycle block and signal“Open door”P-52 004- Max. gap process 1/process 2 : 20°C,Above this value cycle is stopped until temperatureis uniform .96