96
36 Kiln with 2 thermocouples and contactor control
On bigger kilns it may be necessary to introduce more precise and
accurate control of internal temperature, for example in high kilns
heat may concentrate on the highest part, leading to a relevant
gap of temperature between bottom and top levels. Correct
placement of heating elements and a double control loop can
achieve uniform temperature for optimal firing cycle.
In this configuration two outputs of ATR620 are configured as
control of two processes (corresponding to TC1 and TC2), the
third is available for alarm/auxiliary/event.
Programming of main parameters:
P-01
0009 15 cycles available, 20 steps each
Special functions are desabled
P-02
1000 Select thermocouple K on input AN1, process 1
P-03
1001 Select thermocouple K on input AN2, process 2
P-05
1300 Select control output process 1 - 2 on OUT and A1
P-06
0
Minimum temperature (lower limit scale) 0°C
P-07
1350 Max. temperature (upper limit scale) 1350°C
P-13
0000 Available for alarm / auxiliary / event
P-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 temperature
is uniform .
