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V6-CF Kiln Controller

The V6-CF is Bartlett Instrument Company's fifth generation kiln controller. Each generation has improved the reliability, features and ease-of-use to make Bartlett Instrument Company's kiln controllers the most accepted on the market. With the V6-CF cone-fire method, you select 1 of the 4 firing speeds and your cone number and you're firing your ceramics with as few as 6 key presses! The vary-fire method gives you the freedom to create up to six, 8-step user programs to fire your ceramics, crystalline glazes, glass or jewelry. Other features include delay start, preheat, alarm, cone adjustments, thermocouple adjustments, °F or °C operation, 16 segment program, and skip step.

Advanced features of the V6-CF's include 3-zone control and KISS (kiln interface software system) for remote programming and data collection from a personal computer!

Features of the Model V6-CF Controller

Firing Methods and Features which make firing easier:

  • CONE FIRE METHOD - use when firing to a specific cone number using one of four speeds, "Slow Bisque", "Fast Bisque", "Slow Glaze", or "Fast Glaze".
  • VARY-FIRE PROGRAMMER - Program up to 6 separate firing profiles for repeated use. Each profile may have up to 8 segments with separate heating or cooling rates, temperature set-points, and hold times. Use RECALL PROGRAM button to recall any firing program with one button ease.
  • DELAY START - Delay the start of your firing up to 99 hours and 99 minutes.
  • PREHEAT - Used with CONE FIRE method to hold a temperature of 200 °F for a specified time prior to starting the firing. This can be used for drying ware.
  • ALARM - User set audible temperature alarm.

Advanced features:

  • CONE OFFSET - Used to raise or lower the final temperature of any cone to fine tune the controller to your kiln.
  • SKIP STEP -Skip from the present segment to the next ramp.
  • ERROR CODES - Error codes may be turned on so the kiln will automatically shut down if there is an error. They may be turned off for special firing profiles.
  • 16 SEGMENT PROGRAMS - User programs 5 and 6 can be combined for a 16 segment program.

Messages and information:

  • REVIEW PROGRAM - Review your firing profile any time before or during the firing.
  • VIEW SEGMENT - View the current segment or skip to the next segment.
  • CONE TABLE - Easily look up temperature and cone number equivalents.
  • °F or °C - Choose between FARENHEIT or CELCIUS temperature scales.

Communicates with personal computer equipped with KISS software.


Programming

1. CONE FIRE


The CONE FIRE mode allows you to fire to a cone number with one of four different speeds.

To use CONE FIRE:

  1. Make sure the temperature is flashing. Pressing the "1" key will clear the display of errors (Err) or FAIL.
  2. Press one of the 4 firing speed buttons (see Appendix A to see the ramp speeds)
  1. fire

    Slow Bisque - Used for setting a slow bisque firing profile.
             ** 13 hours to fire to cone 04. **

    Fast Bisque - Used for setting a fast bisque firing profile.
             ** 10 hours to fire to cone 04. ** Slow Glaze - Used for setting a slow glaze firing profile.
             ** 7 hours to fire to cone 04. **

    Fast Glaze - Used for setting a fast glaze firing profile.
             ** 4 hours to fire to cone 04. **

  2. Press ENTER.
  3. Type the cone number you want (acceptable values are from .022 to 10).
    If you type a wrong number, press "0" 3 times or until all zeros appear in the display, press ENTER, then type the correct number (only three digits are displayed at this time)
  4. Press ENTER.
  5. Type the hold time at the end of the firing or leave at zero
  6. Press ENTER. 'CPL' will be displayed briefly, then the current temperature will be flashing in the display.
  7. Press START/STOP to begin firing.
NOTE: With any of the CONE FIRE modes, a preheat stage is available. During the preheat stage the temperature is increased at a rate of 60°F per hour until 200°F is reached; the 200° temperature is then held for the programmed amount of time. Preheat is automatically set to zero during cone fire programming and at the end of each firing, so if a preheat stage is wanted, it must be reprogrammed before each cone firing. See SECTION 4 - "OTHER" options for programming "Preheat".

CONE FIRE Example

Slow Bisque Firing, Pre-heat 1 hour, Cone 04, 10 minute Hold - Use the following steps for a bisque firing to cone 04, a 10 minute temperature hold at the peak temperature, and a preheat stage with 1 hour hold time.

Step Press Display Comment
1 Slow Bisque S-bC If you press the wrong button, before pressing ENTER, simply press the correct button.
2 ENTER alternately flashing:
ConE & No.
Slow Bisque is now selected. The word ConE and the last entered cone number will alternately flash on the display. Now enter the cone number - 04.
3 0, 4 alternately flashing:
ConE & 04
The word ConE and the entered cone number will alternately flash on the display. If you type a wrong number, press zero 4 times, then type the correct number.
4 ENTER alternately flashing:
HLd & 00.00
The cone number has been accepted. Now enter the 10 minute hold time.
5 1, 0 00.10 Numbers to left of decimal point are hours, to the right of decimal point are minutes. If you type a wrong number, press zero 4 times, then type the correct number.
6 ENTER CPL flashes, then the current temperature The 10 minute hold time is accepted. CPL indicates the firing profile has been completed.
7 OTHER until PrHt displayed PrHt Press OTHER until PrHt is displayed. If you accidentally pass PrHt press "OTHER" several more times until PrHt appears again.
8 ENTER alternating flashing:
HLd & 00.00
Preheat has been selected and the hold time is to be entered now.
9 1, 0, 0 01.00 Numbers to left of decimal point are hours, to the right of decimal point are minutes.
NOTE: For a 1 hour hold time you could also enter 60 for 60 minutes; the display would show 00.60. If you type a wrong number, press zero 4 times, then type the correct number.
10 ENTER CPL flashes, then current temperature Accepts a hold time of 1 hour, then CPL indicates the preheat stage has been completed.
11 START/STOP -On- After -On- is displayed for several seconds, the heating elements of the kiln will cycle on and the current temperature in the kiln will be displayed.
If a time is displayed instead of the current temperature, then a delay start is in effect. If you do not want to delay the start press START/STOP button, then DELAY, then 0000, ENTER. When the current temperature again flashes in the display, press START/STOP.

 

2. VARY-FIRE

The V6-CF has 6 vary-fire user programs to store and reuse. Each program has from 1 to 8 segments (2 - 16 segments if 16-s option is on). Each segment has a firing rate, a soak temperature and a hold time. It is best to write out the firing profile that you plan to program before you begin programming. To ramp at the maximum rate either up or down, enter a rate of 9999. To program a down ramp, you enter the rate/hour then a temperature below the previous segment temperature.
NOTE: The first ramp rate of any user program

The following example is a two segment program stored in memory location "user 1".

 

Segment Rate °F/hour Temperature Hold
1 100 200 0
2 500 1575 0
NOTE: Appendix D of this user manual is a blank form for your firing programs.

VARY-FIRE Example
The following steps are used to program "user 1" program for the firing profile above.

Step Press Display Comment
1 ENTER PROG alternately flashing:
USEr & No.
The display alternates between USEr and the last selected user number.
2 1 1 Selects user (USEr) profile number 1
3 ENTER alternately flashing:
SEG & No.
The displays flashes between SEG and the number of segments which were previously programmed
4 2 2 This is the number of segments needed for our example
5 ENTER Alternately flashing:
rA 1 & No.
The display flashes between rA 1 and the heating rate per hour that was previously programmed
6 1, 0, 0 0100 Displays the selected rate/hour
7 ENTER Alternately flashing:
°F 1 & No.
The display flashes between °F 1 & the temperature previously programmed
8 2, 0, 0 0200 Displays the selected temperature
9 ENTER Alternately flashing:
HLd1 & No.
The display flashes between HLd 1 & the hours and minutes which were previously programmed
10 0 00.00 If display does not show 00.00, press 0 until 00.00 is displayed.
11 ENTER Alternately flashing:
rA 2 & No.
The display flashes between rA 2 & the heating rate previously programmed
12 5, 0, 0 0500 Displays the selected rate/hour
13 ENTER Alternately flashing:
°F 2 & No.
The display flashes between °F 2 & the temperature which was previously programmed.
14 1, 5, 7, 5 1575 Displays the selected temperature
15 ENTER Alternately flashing:
HLd2 & No.
The displays flashes between HLd2 & the previously selected hold time.
16 0 00.00 No hold time.
17 ENTER Alternately flashing: ALAr & No. The display alternates between ALAr & the previously used alarm setting.
18 9, 9, 9, 9 9999 Enters the temperature at which the alarm will sound. The alarm will be turned OFF with a setting of 9999.
19 ENTER CPL flashes then the current temperature CPL flashes several times indicating the program has been completed. The current temperature then flashes in the display.

RECALL PROGRAM is used to recall a previously programmed firing profile.
Example: To recall user program #5, use the following:

Step Press Display Comment
1 RECALL PROG Alternately flashing:
USEr & 1
The controller is ready to accept the desired user number.
2 5 5 Indicates the user program selected.
3 ENTER CPL flashes then the current temperature CPL flashes several times indicating the program has been selected. . The current temperature then flashes in the display.

 

3. VIEW SECTION


View Section - Contains buttons to look up Cone Temperatures, Review programs, View current segment and Skip segments during firings.
sectionThe VIEW section allows you to view various information about cone temperatures, firings, and settings.

Cone Table - Used to look up the temperature of various cone numbers. The temperature which is displayed is for self-supporting cones with a heating rate of 108°F/hr. TO use, press "Cone Table", enter the cone number you want to look up, press "ENTER"; the cone temperature will be displayed followed by CPL.

Review Program - The information displayed when Review Program is pressed varies depending on whether you are using Cone Fire or Vary Fire. When Review Program is pressed, each of the steps in the current firing profile is displayed one after another changing every 1/2 second.

In Cone Fire Mode - The display will show the selected firing profile in the following order:

  1. cone fire speed
  2. preheat time (PrHt)
  3. cone #(ConE)
  4. cone temperature* (°F)
  5. hold time (HLd)
  6. delay time (dELA)
  7. alarm setting (ALAr)
  8. error codes on/off (ErCd)
  9. LAG setting (if zone control)
*After a firing is complete, the cone temperature (°F) will show the actual temperature reached during firing.

In Vary Fire Mode - The display will show in the following order:

  1. the user program # (USEr)
  2. the number of segments (SEG)
  3. 1st ramp rate (rA 1)
  4. 1st segment temperature (°F 1)
  5. 1st hold time (HLd1)
    (If there is more than 1 segment, then the ramp rate, segment temperature, and hold time of each of the other segments will be displayed in order.)
  6. delay time (dELA)
  7. alarm setting (ALAr)
  8. error codes on/off (ErCd)
  9. LAG setting if zone control

View Segment - only functions when a firing is in progress. View segment is used to view the current firing segment or to skip from the current segment to the next firing ramp. When View Segment is pressed during a firing the current segment of the firing, the travelling set-point and the circuit board temperature are displayed. If it is pressed during IdLE, StOP is displayed then the current temperature.
Skip Step (SStp) - Skip Step (Skip Step) is included in View Segment. The skip step feature is only available in a VARY-FIRE firing profile. It is used when enough heat work has been done at the current segment and you want to immediately go the next ramp rate. To skip to the next ramp, press View Segment, then within 1/2 second, press ENTER, and ENTER a second time. If you press View Segment and do not press ENTER within 1/2 second, the current segment (e. g., rA 1) will continue to be displayed. Simply wait until the temperature is again displayed and press View Segment, then ENTER within 1/2 second, and ENTER again. If you press View Segment, then ENTER, then decide not to skip to the next ramp stage, simply do not press any key; after about 10 seconds the display will return to the current temperature.

 

4. OPTIONS SECTION

Delay - This key is used to delay the start of a firing.

Example: Program a one hour delay to the start of a firing.
Remember: the temperature must be flashing before beginning to program.

Step Press Display Comment
1 DELAY Alternately flashing:
dELA and 00.00
The controller is ready to accept the delay time of 1 hour.
2 1, 0, 0 01.00 Displays the selected time. Numbers to left of decimal point are hours, to the right of decimal point are minutes. If you type a wrong number, press zero 4 times, then type the correct number.
3 ENTER CPL flashes then the current temperature CPL flashes several times indicating the 1 hour delay has been accepted. The current temperature then flashes in the display.

Alarm - This key is used to set the high or low temperature alarm. The alarm may be set before or during a firing. When the alarm temperature is reached, a buzzer will sound.

Example: Before the start of a firing, set the alarm temperature to go off at 200°F.
Remember: the temperature must be flashing before beginning to program.

Step Press Display Comment
1 ALARM Alternately flashing:
ALAr and #
The word ALAr and the last entered alarm temperature will alternately flash on the display. The controller is ready to accept the alarm temperature. If no alarm is entered within 10 seconds, the display will flash CPL and then the flashing current temperature.
2 2, 0, 0 0200 Displays the selected temperature of 200°. If you type a wrong number, press zero 4 times, then type the correct number.
3 ENTER CPL flashes then the current temperature CPL flashes several times indicating the alarm temperature has been accepted. The current temperature then flashes in the display.

TO EXIT this menu without selecting any option, cycle through by pressing "Other" until CHG° appears, then press ENTER twice.

rSEt (RESET) press "OTHER" until rSEt is displayed, then press "ENTER". CPL will be displayed indicating that the T/C offsets have been set to zero, the LAG to 13, and the error codes are turned ON.

PrHt (Preheat) - Preheat is used with the CONE FIRE mode only. When Preheat is in use, the temperature ramps up at 60°F/hour to 200°F and then holds at 200° for the amount of time programmed. So if you start at a room temperature of 70°F, then it will take just over 2 hours to reach 200°F at which time the hold will start. Preheat is automatically set to zero during cone fire programming and at the end of each firing. If a preheat stage is desired, it must be reprogrammed for each firing.

Preheat Example: Set a preheat time of 2 hours.
Remember: the temperature must be flashing to start the programming.

Step Press Display Comment
1 Other PrHt If PrHt does not show on the display, even after cycling through the options, it means that a CONE FIRE mode has not been selected. Exit the menu and select a CONE FIRE profile, then return to the Other menu.
2 ENTER Alternately flashing:
HLd & 00.00
Preheat has been selected; enter the time you want to hold the temperature at 200°F (in this example 2 hours)
3 2, 0, 0 02.00 Displays the selected time of 2 hours. Numbers to left of decimal point are hours, to the right of decimal point are minutes. If you type a wrong number, press zero 4 times, then type the correct number.
4 ENTER CPL flashes then the current temperature CPL flashes several times indicating the 2 hour preheat time has been accepted. The current temperature then flashes in the display.
 

Id (identification #) - Used by KISS (Kiln Interface Software System) to identify the kiln when hooked to a personal computer. This is covered in a separate KISS manual.

16-S (16 segment program) - This option allows vary-fire programs 5 and 6 to be combined into a 16 segment program. It only shows in the menu when user 5 is programmed and selected. When using this option, user 5 and 6 can have 1 to 8 segments. First, program user 5 then user 6. Next, recall user 5 and then use the "OTHER" key to display '16-S'. Press "ENTER" to accept the option. Press "1" until the display shows 'On'. Press "ENTER" to activate the 16 segment option. Press "START" and the controller will fire user 5 until complete and then will fire user 6.
NOTE: The first segment of user 6 must be an up ramp or the segment will be skipped.

The cone-fire to ramp-hold feature allows for the firing of a cone-fire program automatically followed by the User #6 ramp-hold (vary-fire) program. Turning on the 16-segement (16-S) option after programming the cone-fire program activates this feature.
IMPORTANT NOTE: The controller uses the first segment of User 6 to transition from the cone fire program so the controller ignores the first segment. This means when you program, the number of segments you enter must be 1 greater than the actual number of segments you need. In other words, start the actual programming with segment number 2. The controller will ignore any information you enter into segment 1.

Press "Enter Prog" button. Press "6" and then press "ENTER" to program User 6 with desired program.
Segment 1 of User 6 is utilized by the controller and connot be used for your program. Therefore the number of segments will need to be one greater than the number used for programming. When the display showr 'ra 1' press "ENTER", "ENTER", "ENTER" to begin programming segment 2. After User 6 is programmed, press the desired Speed button (S-BC, F-BC, S-GL, or F-GL) in the Cone Fire options. Enter desired Cone-Fire program. Press the "Other" button until '16-S' appears and press "ENTER". The display will flash between '16-S' and the current setting, either 'On' or 'OFF'. Press the "1" key until the desired option is diplayed. Pressing "ENTER" when 'On' is displayed will allow Cone-Fire to flow into Ramp-Hold User 6 and 'OFF' will disable this option, meaning only the cone-fire program will fire. Press the "ENTER" button. Programming is now complete. If 16-segment is on then the controller will perform the Cone-Fire program and upon finishing it will run the Ramp-Hold User 6 program.
NOTE: 16-S will appear in "REVIEW PROGRAM" if it is turned on.

 

CnoS (Cone Offset) - Used to raise or lower the final cone temperature. The final cone temperature can be raised or lowered a maximum of 50°F (28°C).
When entering the offset temperature the following convention is used: the left two digits designate whether to raise (00) or lower (90) the cone temperature, that is, '00' means plus (+) and '90' means minus (-). The right two digits are the number of degrees the cone temperature will be raised or lowered.

Examples:
Number Meaning
0020 Raise the final cone temperature by 20°F      increases heat work
0040 Raise the final cone temperature by 40°F           "           "       "
0015 Raise the final cone temperature by 15°F           "           "       "
9030 Lower the final cone temperature by 30°F   decreases heat work
9005 Lower the final cone temperature by 5°F           "           "       "
9045 Lower the final cone temperature by 45°F         "           "       "
 

The following apply to cone offsets:

  • The final temperature is affected only for the cone number that you change and no other cone numbers.
  • The cone offset will remain for that specific cone number until it is changed again.
  • Typing 00 (before the desired offset temperature) will raise the final temperature and INCREASE the amount of heat work.
  • Typing 90 (before the desired offset temperature) will lower the final temperature and DECREASE the amount of heat work.
  • The maximum number of degrees that can be raised or lowered is 50°F (28°C)
  • Cone offsets do not affect the VARY-FIRE mode.

Cone Offset Example: Adjust cone 07 to shut off the kiln at 20°F below Orton's prescribed cone temperature.

Step Press Display Comment
1 Other, Other CnoS If CnoS does not show on the display, press the "Other" key until "CnoS" displays.
2 ENTER Alternately flashing:
ConE & #
Cone Offset has been selected; the word ConE and the last entered cone number will alternately flash on the display. Now enter the cone number which you want to adjust (in this example cone 07)
3 0, 7 Alternately flashing:
ConE & 07
The word ConE and the entered cone number (07) will alternately flash on the display. If you type a wrong number, press zero 3 times, press ENTER, then type the correct number.
4 ENTER Alternately flashing:
°F0S & 9000
°F OS and the previous offset setting alternately flash. Enter the new offset temperature using the rules above, in this example, "9020".
5 9, 0, 2, 0 9020 The selected offset temperature is displayed. If you type a wrong number, press zero 4 times, then type the correct number.
6 ENTER CPL flashes then the current temperature CPL flashes several times indicating the offset temperature adjustment has been accepted. The current temperature then flashes in the display.
 

 

tCoS (Thermocouple Offset) - Used to raise or lower the temperature indicated by the thermocouples. The maximum offset is 50°F (28°C). A positive offset is entered with 00 preceding the amount of offset and a negative offset is preceded by 90. This is the same as is done for entering cone offsets. A negative offset will lower the indicated temperature reading and cause more heat-work. When tCoS is displayed, press ENTER and the current offset for the thermocouple will be displayed. Press ENTER when the correct offset is displayed.

The following apply to T/C offsets:

  • The final temperature is affected for all CONE FIRE and all VARY-FIRE programs.
  • The thermocouple offset will remain for that T/C until it is changed again.
  • Typing 00 (before the desired offset temperature) will raise the indicated temperature but it will lower the actual temperature in the kiln and LOWER the amount of heat work.
  • Typing 90 (before the desired offset temperature) will lower the indicated temperature but it will increase the actual temperature in the kiln and INCREASE the amount of heat work.
  • The maximum number of degrees that can be raised or lowered is 50°F (28°C).
  CONE Offset T/C Offset
To Correct Under-firing Set positive (00) cone offset Set negative (90) t/c offset
To Correct Over-firing Set negative (90) cone offset Set positive (00) t/c offset
CHG° - Used to select degrees Fahrenheit (°F) or degrees Celsius (°C).

Example: Change from °F to °C.

Step Press Display Comment
1 Other, Other CHG° If "CHG°" does not show on the display, press the "Other" key until "CHG°" displays.
2 ENTER °F Indicates that the Fahrenheit (°F) scale is being used. You can toggle back and forth between °F and °C by pressing the "1" key.
3 1 °C . Displays "°C .". The decimal point in the lower right corner means that the Celsius (centigrade) scale has been selected.
4 ENTER CPL flashes then the current temperature CPL flashes several times indicating the temperature scale has been changed. The current temperature in °C then flashes in the display. There will be a decimal point in the lower right-hand corner of the display.

 

ErCd - Used to turn on or turn off the error codes. When you receive your controller the error codes are turned on. In most cases, you want the error codes on to protect your firing. They can be turned off if you are doing special firings, such as jewelry or glass firing where the kiln is left open.
NOTE: When ErCd is turned OFF. When errors are off, Err6 (t/c backwards) is still on. In cone fire mode during the last segment (i.e., last 250 degrees) of the firing, Err1 (ramping too slow) and Err8 (temperature falling) are turned on. Error Codes "off" also turns the "LAG" feature off.

Example: Turn the error codes off.
Step Press Display Comment
1 Other, Other ErCd If 'ErCd' does not show on the display, press the "OTHER" key until 'ErCd' displays.
2 ENTER On Indicates that the error codes are turned on. You can toggle back and forth between on and off by pressing the "1" key.
3 1 OFF Displays 'OFF' indicating the error codes will be turned off.
4 ENTER CPL flashes then the current temperature CPL flashes several times indicating the error codes are off. The current temperature then flashes in the display.
 

bd t (circuit board temperature) - Press "ENTER" when 'bd t' is displayed and the circuit board temperature will be displayed. It is used for diagnostics. If 'FAIL' is displayed indicating a failed thermocouple (t/c), press the "OTHER" key until 'bd t' is displayed, press "ENTER". If the t/c is faulty then the displayed temperature will be approximately room temperature. If the circuit board has failed then 'FAIL' will continue to be displayed.

Hot Keys while the kiln is firing.
      #5 Key - pressing the number 5 key will show the calculated rate of rise. If the kiln has been on for less than 8 minutes, the display will show the programmed rate of rise and not the actual rate.
      #8 Key - pressing the number 8 key will cause three of the display decimal points to act as pilot lights for the elements. The thousands decimal point will light when the top element is on, the hundreds decimal point will light when the middle elements are on, and the tens decimal point will light when the bottom elements are on. When you have a single zone control kiln (one thermocouple) the decimal points will light in unison although there might be some slight variation when each of the decimals come on.

Zone Control

1. FEATURES AND ENHANCEMENTS
  • 3 separately controlled zones (3 t/c inputs, 3 outputs)
  • Adjustable offsets for each thermocouple (t/c)
  • Continues to fire with 1 or 2 failed thermocouples (t/c's)
  • Suspend ramping when any zone lags the set-point
  • Reset function which zeros the t/c offsets, turns the errors on, and sets the lag to 13 degrees
  • Decimal points in the display can be used as pilot lights
    Press the "8" key during a firing and the 1000's decimal point will light when the top elements are on, 100's decimal point when middle elements are on, and 10's decimal point when the bottom elements are on.

2. GENERAL DESCRIPTION

The V6-CF advanced 3-zone control system is programmed the same as the single zone control but it has new features to ensure even firing from the top to the bottom of the kiln. A 3-zone control has 3 temperature sensor inputs (thermocouples) and 3 independent outputs so the kiln can have 3 separately controlled sections (zones). The controller senses the temperature in each section of the kiln, compares the temperature to the desired temperature (traveling set-point) and adjusts the power going to each section separately giving each just the right amount of power to keep the temperature at the correct setting. The single zone controller only measures the temperature at the center of the kiln and gives all sections the same amount of power.

3. ADJUSTABLE LAG

For tighter control from one section to the next, the controller has a programmable "lag" feature so the user can set how much the temperature in any zone can lag behind the traveling set-point. The maximum lag setting is 99, the default setting is 13. The controller senses when any section is lagging behind the traveling set-point and keeps the controller from increasing the traveling-set point until the lagging section catches up. Ramping of the traveling set-point is only suspended when a section is behind by more than the programmed "lag". A smaller "lag" will result in tighter control between the sections but it will increase the firing time. 'rSEt' will set the "lag" to 13. Therefore, anytime a section is more than 13 degrees behind the traveling set-point the controller will wait for the lagging section to catch up before increasing the traveling set-point. Turning error codes (ErCd) off will also turn off the lag feature.

4. THERMOCOUPLE OFFSETS (see Cone offsets and T/C offsets in the OPTIONS SECTION for more information)

Normal variation in thermocouples (t/c) can cause a section to fire too hot or too cool. The zone control has an offset feature to adjust the reading of each thermocouple to compensate for any error. For example, if shelf cones indicate that the bottom section is under firing, it means that the controller thinks the bottom section actually reached the ending temperature when it really was below the ending temperature. To correct this problem, a negative thermocouple offset is required. This offset will be subtracted from the actual reading and will lower the temperature reading in that section. A negative offset will cause a section to fire to a higher temperature increasing the heat-work for that section. A positive offset will cause a section to fire to a lower temperature decreasing the heat-work for that section. 'rSEt' in Other menu will return all the t/c offsets to 0.

5. THREE THERMOCOUPLES

Besides better measuring of the temperature, the zone control also offers security through its three thermocouples. With a single zone controller, a firing will be stopped if the thermocouple (t/c) fails. The zone control with 3 t/c's, will continue to fire if one or two of its thermocouples fail during a firing. If the top or bottom thermocouple fails that section will be controlled by the middle t/c. If the middle thermocouple fails the middle section will be controlled by the top t/c. If at 'IdLE' and a t/c fails, the display will alternate between 'FAIL' and the number of the failed t/c (1,2,3). The temperature of each zone can be viewed. The temperature will alternately flash with the currently selected zone. To select zone 1, press the "1" key and tC 1 will alternate with the current zone 1 temperature. For zone 2 press the "2" key, for zone 3 press the "3" key.

6. ERROR CODES (ErCd) or ERROR CHECKING

The zone control has the same standard error checking features of the single zone controller. 'Errd' was introduced to monitor whether any zone or section gets more than 100 degrees above the travelling set-point but this feature also functions with the single zone controller. Errd may be triggered with a zone control if a thermocouple is in the wrong section, there is crossed output wiring, or a relay is stuck on. 'Errd' may be triggered in a single zone controller if there is a stuck relay or a stuck output.

Turning error codes off with the zone control also turns the "lag" feature off. 'rSEt' turns error checking on. Caution should be taken when choosing to turn the errors off because it leaves the kiln vulnerable to malfunctions that would normally be detected by the error codes.

7. "OTHER" MENU - New zone features accessed using the "other" button

There are ten functions accessed through the "Other" button - reset (rSEt), preheat (PrHt), identification number (Id), 16 segment program (16 - S), cone offset (CnoS, change temperature scales (CHG°), error codes on/off (ErCd), thermocouple offsets (tCoS), LAG setting (LAG), and board temperature (bd t).
NOTE: The "other" functions can only be accessed when the kiln is at Idle.

DESCRIPTION OF "OTHER" FUNCTIONS
(the "other" functions can only be accessed when the kiln is not firing)

RESET (rSEt) press "OTHER" until 'rSEt' is displayed then press "ENTER". 'CPL' will be displayed indicating that the T/C offsets have been set to zero, the LAG to 13, and error codes (ErCd) set to 'on'.

PREHEAT (PrHt), CONE OFFSET (CnoS), CHANGE F/C (CHG°) all work as described in the OPTIONS SECTION under Programming.

ERRORS ON/OFFt (ErCd) (also referred to as error checking) works as described in the previous ERROR CODES SECTION of Zone Control but it will also turn off the LAG (suspend ramping) when errors are turned off.

T/C OFFSETS (tCoS) (see also OPTIONS SECTION under Programming) are used to raise or lower the temperature indicated by any of the thermocouples. The maximum offset is 50°F (28°C). A positive offset is entered with 00 preceding the amount of offset and a negative offset is preceded with 90. The use of 00 for "+" and 90 for "-" is the same as is done for entering cone offsets. A negative offset will lower the indicated temperature reading and cause more heat-work. A positive offset will increase the indicated temperature reading and decrease heat-work.

When 'tCoS' is displayed, press "ENTER" and 'tC1' will be displayed. Press "ENTER" and the current offset for the top thermocouple will be displayed. Press "ENTER" when the correct offset for the top thermocouple is displayed and 'tC2' will be displayed. Repeat the above steps for tC2 and tC3.

LAG is the number of degrees any zone can lag the travelling set-point before ramping is suspended. Ramping will continue as soon as the slow zone catches up. LAG is programmable with a maximum setting of 99. A smaller LAG gives tighter control but usually slows the ramp rate because the local set point will only advance as fast as the slowest zone. Reset programs LAG to 13.

bd t will indicate the temperature of the board and is also used for diagnostics.

 

Appendix A: Cone Fire Temperature Profiles

Firing Profile for cone 04

Slow Bisque Firing Profile Slow Glaze Firing Profile  
Segment Rate F/hr Temperature Hold Time Segment Rate F/hr Temperature Hold Time
3 80 250 0 2 5 150 250 0 1
4 200 1000 0 4 6 400 1676 0 4
5 100 1100 0 1 7 120 1926 0 2
6 180 1676 0 3       0  
7 80 1926 0 3       0  
      Total 13       Total 7
Fast Bisque Firing Profile   Fast Glaze Firing Profile  
Segment Rate F/hr Temperature Hold   Segment Rate F/hr Temperature Hold  
3 120 250 0 2 6 570 1676 0 3
4 300 1000 0 3 7 200 1926 0 1
5 150 1100 0 1       0  
6 180 1676 0 3       0  
7 108 1926 0 2       0  
      Total 10       Total 4
 

APPENDIX C: Common Questions and Situations

Q.  How do I know which kiln controller board I have?

A.   From idle, press "OTHER" two or three times. If 'ID' shows up in the "other" menu, then you have an SMT600 board. If you do not have an SMT600 board some other menu option will be displayed.

Q.  During programming of a firing, I typed a wrong number. How do I correct this?

A.   Before pressing "ENTER", enter zero until all zeros are displayed, then enter the correct number. If you have already pressed "ENTER", you must press "ENTER" to progress through to the end of the program then start the program again.

Q.  How do I clear the 'ErrP' from the display?

A.   Press the "1" key. After several seconds the current temperature will be displayed. Several other numbers or 'StOP' may be displayed before the current temperature.

Q.  I turned on the controller and 'FAIL' is displayed. What does this mean?

A.   The thermocouple is not connected to the controller. When connecting the thermocouple, connect the RED wire to the connector with RED dot and connect the YELLOW wire to the connector with the YELLOW dot. On all thermocouples, the RED wire is always negative; the YELLOW wire in this case is the positive. Also there may be a break in one of the thermocouple lead wires, if so, the thermocouple must be replaced. Click here to see the V6-CF Connection Diagram.

Q.  How can I find out the final temperature which was reached during a cone firing?

A.   At the end of a cone firing, the current kiln temperature and 'CPLt' will be alternately flashing in the display. Press "STOP". Then press "Review Program", the final temperature will display. This final temperature will be retained until the next firing or until the controller is reprogrammed.

Appendix D: Firing Program Blank

Firing Program Number: ____________

 

Segment Rate Temperature Hold
1 _______________ _______________ _______________
2 _______________ _______________ _______________
3 _______________ _______________ _______________
4 _______________ _______________ _______________
5 _______________ _______________ _______________
6 _______________ _______________ _______________
7 _______________ _______________ _______________
8 _______________ _______________ _______________

 

 

 

 


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