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Step 7 of Ramp-Hold Programming in the red box at

right shows you how to zero out the segments you don’t
need. (Entering a rate of 0 for the first segment you
don’t need zeroes out the rest of the segments.)

When entering a Ramp-Hold program for the first

time, press

1

after

[USER]

appears. Your first firing

will be stored as Program 1. (See Step 2 at right.)

Each time you store another program, select the next

available number, such as 2, at the

[USER]

prompt. Se-

lecting a number for a new program over-writes
(erases) any program stored there. Write down your
user programs for quick reference. (Copy the blank
forms on page 37 and keep them in a 3-ring binder.)

Pointer:

For repeat firings that you don’t want to

inadvertently change, see Program Lock, page 25.

Firing a Stored User Program

After you enter a new program and the display shows

[IDLE]

, the new program is in memory and ready to fire.

Selecting a different stored program takes only sec-

onds:

1

From

[IDLE]

press

4

.

2

[USER]

will appear. Enter the program number (1

- 35).

3

If there are no changes to the program, press

STOP

.

[IDLE]

will appear. The controller is ready

to fire your selected program. To begin firing, press

ENTER

once.

Pointer:

Use Program Review to be sure you are

firing the correct program! From

[IDLE]

or even

after the firing has started, press

6

. The values for

the program will appear.

Rate as Degrees Per Hour

Each segment must include a rate, which is the firing

speed of that segment. We measure rate as degrees per
hour. This is similar to miles per hour; just replace miles
with degrees. During programming, enter the rate when

[RA]

appears. (

[RA]

will also include the segment num-

ber:

[RA 1] [RA 2]

etc.)

Keep the kiln lid or door closed when the kiln is not in use.

15

Ramp-Hold Programming

Use these instructions for your first firings. Later you

may prefer “Ramp-Hold Shorthand Instructions,” inside
back cover.

As you follow these steps, you will see values (tempera-

tures, rates, etc.) from the last firing. To use these again,
press

ENTER

. To program a controlled cooling, set the

segment to a lower target temperature than that of the pre-
vious segment.

To fire without Alarm or Delay: Follow steps 1

through 7. Then press

START

once.

1

Apply power to the kiln.

[8888]

then

[IDLE]

will

appear. (Press

ENTER

if

[IDLE]

does not appear.)

2

Press

4

.

[USER]

will appear. Enter a program num-

ber from 1 to 35.

3

Press

ENTER

.

[RA 1]

will appear. Enter firing rate

for segment 1 (temperature change per hour: from
1° to 9999°).

Note:

If you have selected Time in the Rate op-

tion, enter the time needed to reach the target
temperature for that segment. (See next page.)

4

Press

ENTER

.

[°F 1]

(or

[°C 1]

) will appear. Enter

the target temperature of segment 1.

5

Press

ENTER

.

[HD 1]

will appear. Enter segment 1

hold time in hours / minutes (e.g. 12 hours, 30 min-
utes = 12.30). No hold = 00.00.

6

Press

ENTER

. If

[FN 1]

appears, and you have an

AOP receptacle on your kiln, use the 1 or 2 key to
select ON or OFF. Press

ENTER

. (For more de-

tails on AOP, see next page.)

7

Continue entering values for the segments needed.
When

[RA _]

appears for the first segment you

don’t need, press

0

then

ENTER

.

[IDLE]

will ap-

pear. The kiln is ready to fire.

8

To set Alarm:

press

7

.

[ALAR]

will appear. Enter

alarm temperature. (Enter

0

to turn alarm off.)

Then press

ENTER

.

[IDLE]

will appear.

9

To set Delay:

press

3

.

[DELA]

will appear. Enter

delay time (i.e. 12 hours, 30 minutes = 12.30). Then
press

ENTER

.

[IDLE]

will appear. (Delay zeroes

out after each completed firing.)

10

To start program:

From

[IDLE]

press

ENTER

once.

[-ON-]

will appear, then kiln temperature. If

a delay was programmed,

[DELA]

will appear, then

time remaining until start. To stop the firing at any
time, press

STOP.

We recommend using Program Review (page 8) before

firing. When the program fires to completion,

[CPLT]

will

appear and the controller will beep. Press

ENTER

.

[IDLE]

will appear.

Summary of Contents for Sentry 3.0

Page 1: ...Ramp Hold and Cone Fire Cone Fire pg 10 13 From IDLE press 1 Basic firing to a cone num ber Enter cone number speed pre heat hold and slow cool Add Time pg 7 During firing press 2 Each additional key...

Page 2: ...s of a Cone Fire program Pg 19 OFST Cone Offset Adjust Cone Fire to match the bend ing of the witness cone Pg 20 COOL Slow Cooling Turn on controlled cooling in Cone Fire This can dramatically affect...

Page 3: ...est 21 TC Thermocouple Type 21 F C Selecting F or C Display 22 TCOS Thermocouple Offset 22 AOP1 AOP2 Auxiliary Outlets 22 RATE Select Preferred Type of Rate 23 CENT Electric Cost 23 KW Kilowatts Used...

Page 4: ...et a power inter ruption as a power failure and turn the kiln back on when you reconnect the power G Place the kiln on the stand recommended by the manufacturer When a kiln is safety tested the lab fi...

Page 5: ...kiln switch box To lower the temperature open windows and blow air across the kiln s switch box with a fan Place several fans in the room during hot weather See page 25 to check circuit board temperat...

Page 6: ...ing press ENTER from IDLE The kiln will begin firing This works in both Cone Fire and Ramp Hold But first make sure you are repeating the cor rect firing by using Program Review see page 8 For re peat...

Page 7: ...seconds Note AddTime will add5 minutes to a holdeven if no hold had been programmed before After hold time appears in the display 5 minutes will be added with each press of the key The 3 Key Delay Fi...

Page 8: ...he controller will fire the program that is in active memory Program Re view shows the values for that program The program in ac tive memory is I The program that you fired last or I The program that...

Page 9: ...key before Slow Cooling begins and press it again after the kiln has fired to completion The 9 Key Look Up Cone Numbers Skip a Segment Cone Table Look up a cone temperature with the 9 key See the next...

Page 10: ...o not have to go through all the prompts to get back out Press STOP to go to IDLE The STOP BACK key works in Cone Fire and Ramp Hold It will take you back one step with each key press Chapter3 Cone Fi...

Page 11: ...clay and glaze Firing Schedules Cone Fire uses three firing schedules I Low fire cones 022 011 I Medium fire cones 010 01 I High fire cones 1 10 Keep the kiln lid or door closed when the kiln is not i...

Page 12: ...g rate will not change It will always be 108 F 60 C per hour SPD option affects only the earlier ramp segments Pre Heat PRHT Moist greenware can explode during firing This hap pens when the moisture i...

Page 13: ...ages crystal develoment deeper gloss and sometimes startling color shifts Iron red glazes seem to re spond well to slow cooling I The COOL prompt does not appear in the display dur ing programming unt...

Page 14: ...controllers fire to a temper ature in a given length of time If you would prefer to program that way instead of at a rate per hour see the Rate option page 23 A segment can have only one ramp and onl...

Page 15: ...u may prefer Ramp Hold Shorthand Instructions inside back cover As you follow these steps you will see values tempera tures rates etc from the last firing To use these again press ENTER To program a c...

Page 16: ...ough a peephole Press STOP when the correct witness cone bends noting how much Hold time was needed Pro gram that much Hold time the next time you fire the same type of ware During Hold the temperatur...

Page 17: ...Ramp Hold This is the cone 04 Cone Fire schedule at standard Medium speed with an added slow cooling segment See Cone Fire schedules on pages 32 33 Rate Temp Segment F C F C Hold 1 324 180 1022 550 0...

Page 18: ...he kiln will continually underfire by a wide margin The kiln will overfire if Type S is installed and Type K is selected See page 21 to check the thermocouple type selected in Options Chapter5 Multipl...

Page 19: ...ms G Check the circuit board temperature adjust error messages check the software version and more The Options key gives you access to a list of special fea tures and adjustments in your Sentry With e...

Page 20: ...ings In the earlier Sentry 2 0 controller Cone Offset ad justed one particular temperature range of cones Cone Offset in the Sentry 3 0 adjusts all the cones instead of only a range of cones Follow th...

Page 21: ...t is off all the time 3 After selecting one of the three settings press ENTER Press STOP to return to IDLE General Options General options are available on all Sentry controllers DIAG Amperage Test Ch...

Page 22: ...ress ENTER O or a Thermocouple Offset will appear 3 Using the 1 and 3 keys enter the new offset Press ENTER TCOS willappear To return to IDLE press STOP Thermocouple Offset Settings F Setting C Settin...

Page 23: ...Electric Bill for Firing Cost The controller can figure the electrical cost of a firing if you enter 1 the cost of electricity from your electric bill and 2 the wattage of your kiln The cost of electr...

Page 24: ...t an alarm message will appear Method 3 Set the deviation temperature to 0 in the TEDE option This turns off the FTH FTC and LTDE alarms page 27 We do not recommend a 0 set ting Method 4 Program a seg...

Page 25: ...CAUTION Do not operate the kiln if the ELEC display is above 158 F 70 C LOCK Program Lock Tamper Proof Individual Programs By default Program Lock is inactive When it has been activated a stored Cone...

Page 26: ...AOP outlet If your kiln has 2 AOP outlets the second AOP will turn on after the first RST Reset Reset the Controller to Most Factory Defaults Reset the controller to a known state in case the control...

Page 27: ...ent Ramp Hold segment with the rate you programmed See page 8 Note In Ramp Hold use a FULL rate to turn off the FTH alarm for that particular segment LTDE Low Temperature Deviation I During a cooling...

Page 28: ...rate of the current seg ment instead of the rate you programmed If you think your kiln is heating or cooling too slowly compare the rate shown in Present Status with the rate you programmed for that...

Page 29: ...an extended power failure PF 1 PF 2 or PF3 willappear The kilnwillNOTresume firing The kiln will remain turned off after a power failure if the temperature is below 212 F 100 C when the power co mes b...

Page 30: ...oose between operation in degrees F or degrees C Message Definition Page Reference F 1 or C 1 Target Temperature 15 This prompt which appears in Ramp Hold programming is asking for a target temperatur...

Page 31: ...ype K your kiln would overfire On the other hand if you had a Type K thermo Message Definition Page Reference couple Type S selected would underfire your kiln which is better than overfiring it The K...

Page 32: ...ate 4 Temp 4 010 324 1022 153 1112 180 1549 108 1657 09 324 1022 153 1112 180 1580 108 1688 08 324 1022 153 1112 180 1620 108 1728 07 324 1022 153 1112 180 1681 108 1789 06 324 1022 153 1112 180 1720...

Page 33: ...Temp 2 Rate 3 Temp 3 Rate 4 Temp 4 010 180 550 85 600 100 843 60 903 09 180 550 85 600 100 860 60 920 08 180 550 85 600 100 882 60 942 07 180 550 85 600 100 916 60 976 06 180 550 85 600 100 938 60 99...

Page 34: ...ons Upgrading the DTC 100 600 800 1000 Series to the Sentry CAUTION Cut off the extra terminal s and jumper wire s unless they attach to relays Uncon nected wires that touch a grounded object can dam...

Page 35: ...the elements Black Red 1 2 5 6 7 8 11 12 Orange Blue White From power supply Fused leg 120 Volt 1 2 5 6 7 8 11 12 Orange Blue White From power supply Fused leg 208 240 Volt Orange Blue White From pow...

Page 36: ...ge 8 2212 2280 2320 Yellow 9 2235 2300 2336 White 10 2284 2345 2381 Pink Rate of temperature increase during last 90 120 minutes of firing Tables by courtesy of the Edward Orton Jr Ceramic Foundation...

Page 37: ...nal Fan On Off User Program ______ Date_______________________________ Type of firing Firing results Recommendations for the next firing of this type RA1 1 Hd1 RA2 2 Hd2 RA3 3 Hd3 RA4 4 Hd4 RA5 5 Hd5...

Page 38: ...1 13 14 16 HTDE 27 humidity 5 I ID 1 24 IDLE 5 K kilowatt hour 23 KW 1 8 23 L LID 27 LOCK 1 24 LTDE 24 26 M memory 14 multiple zone 18 25 O OFST 20 Options Key 9 overfire 2 4 6 18 overshoot 16 P peeph...

Page 39: ...1 Rate 0200 Rate appears ENTER F 1 Enter temperature of segment 1 Temperature 2000 Temperature appears ENTER HD 1 Next enter hold time Hold time 0 if none 00 00 Hold time appears Repeat for other seg...

Page 40: ...he cone number Cone i e 05 05 ENTER SPD Enter the firing speed 1 Fast 2 Med or 3 Slow FAST The firing speed appears ENTER PRHT Enter Pre heat time Pre Heat time 0 if none 00 00 Pre heat time appears E...

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