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Set-Point Hold
You can program the controller to hold at a temperature indefinitely by programming a Hold Time of 99.59. The
controller will hold the kiln temperature until the Program/Stop key is pressed.
Adding Time to a Hold
If the kiln is firing and you need to increase the hold time, use the HLDT option. The controller will display the
current setting and allow you to change it. See the Option menu section of this manual for more details.
Shortening a Hold
To end a hold before the time has expired, use the SKIP option to advance to the next ramp. See the Option menu
section of this manual for more details.
Vent Fan (Optional)
If your controller has been configured to control an auxiliary vent fan, each ramp step will allow the fan to be
turned on or off during the specified ramp. Refer to the Options section for additional details on the AOP1 output.
FN
is the controller display for vent fan. Each ramp will have its own fan setting. The fan setting for the first
ramp step will be displayed as FN 1, the fan setting for the second ramp step as FN 2 and so on.
Programming User Programs
During programming, default values may appear in the display. If the controller was previously programmed, the
last settings will appear.
1. Press the Program/Start key. A program group will show on the display.
2. Press the Increase/Option key until the display shows USER, then press the Program/Start key.
3. Using the Increase or Decrease key, select the desired program number (PR01-PR25) then press the
Program/Start key.
4. RA 1 shows in the display indicating the rate value for the first ramp step. Use the Increase or Decrease
keys to enter the desired heating rate. Then press Program/Start key.
5. ° ° ° ° F 1 or ° ° ° ° C 1 shows in the display indicating the target temperature for the first ramp step. Use the Increase
or Decrease keys to enter the desired temperature. Then press Program/Start key.
6. HD 1 shows in the display indicating the Hold time for the first ramp step. Use the Increase or Decrease
keys to enter the desired time for the kiln to hold at the first target temperature. Time is entered as
(Hours.Minutes). Then press Program/Start key.
FN 1 shows in the display (if available). Use the Increase or Decrease key to select a fan setting; either
7.
OFF or ON for the first ramp. Then press Program/Start key. The Fan option will not appear unless the
auxiliary output option for the controller has been configured.
8. Repeat steps 4 through 7 to program additional ramp rates, temperatures and hold times. After you have
programmed your final ramp, the controller should be displaying the next available RA number. If the
value for the next available ramp rate is set to zero degrees per Hour or Minute, press Enter. The controller
will end the programming mode. For Time mode, the value should be set to 99.59.
AF4X Kiln Controller
10
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