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AF4X Kiln Controller
Threshold Alarm -ALAR
To sound an audible alarm when the controller reaches a temperature, Use the ALAR option. When the kiln reaches the alarm
temperature, the display will flash ALAR and the buzzer will sound. Silence the alarm by pressing any key except Stop.
Pressing Stop ends the firing.
Press the Increase/Option key until ALAR appears, then press Program/Start to see the program temperature. Use the
Increase or Decrease key to edit the setting, then press Program/Start to exit the option menu.
Note: You can program the Alarm before you start the firing or reset it during the firing. Setting the alarm value to 32F (0C)
will disable the Alarm.
Diagnostics – DIAG / TEST
Diagnostics allows the operator to check the current draw on the main supply line. The accuracy is +/-1amp. To accomplish
this, the relays are switched on for a brief time period to get a measurement. During a firing, the test cycle is limited to full load
amps with all relays energized.
Note: the controller must be equipped with a current transformer to achieve a result.
Press the Increase/Option key until DIAG appears, then press Program/Start to see the TEST. Use the Increase or Decrease
key to see AMPS on the display, then press Program/Start to view the measurement. When done, the controller will exit the
option menu.
The TEST Option allows the heater outputs to be turned on for 2 minutes while monitoring the thermocouple temperature. You
can press Program/Start key to advance to the next output before the 2 minutes expires. TEST will also activate the Auxiliary
output identified as AOP1.
Press the Increase/Option key until DIAG appears, then press Program/Start to see the TEST. then press Program/Start to
start the test cycle. When done, the controller will exit the option menu.
Change Temperature Units – F/C
The F/C Option allows the temperature units to be displayed in either degrees Fahrenheit (°F) or degrees Centigrade (°C).
Press the Increase/Option key until F/C appears, then press Program/Start to see the setting. Use the Increase or Decrease key
to edit the setting, then press Program/Start to exit the option menu.
Over-temperature Limit - LIM
The LIM Option allows the operator to set a value for the maximum temperature of the kiln.. The operator can set a value as
low as 200F or as high as the Safety Temperature SFTY temperature.
The controller will abort the kiln firing with alarm OTL if the actual thermocouple temperature is detected 1 degree above the
LIM setting.
Press the Increase/Option key until LIM appears, then press Program/Start to see the setting. Use the Increase or Decrease
key to edit the setting, then press Program/Start to exit the option menu.
Firing Cost - COST
To review the current power consumption during or after the kiln firing, use the COST option. The display will show the
calculated electric usage for the firing if the option KW is programmed with a known wattage rating for the kiln. In addition, the
display will show a calculated firing cost if the CENT option is programmed with a known price for KWHR usage. Note: These
calculations are estimates and are dependent on the accuracy of the values set by the operator.
Press the Increase/Option key until COST appears, then press Program/Start key to view the calculation. Press Program/Start
again to exit the option menu.
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