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Orton Sentry 2.0 Operating Instructions Manual

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Complete Ramp-Hold Operating Instructions
Digital Temperature Controller
Program (pg 7, 11)
From IdLE, press 4.
Select stored program (1 - 4).
Enter rate, temperature, and
hold for each segment.
During firing, press 4.
Change the current segment
temperature. Press Enter.
Change the hold. Press En-
ter. The kiln will continue fir-
ing.
Alarm (pg 11)
From IdLE or during
firing, press 7.
Enter a temperature. When
alarm sounds during firing,
press Enter.
Enter/Start (pg 7)
Press Enter/Start after each
step in programming a firing.
Press Enter/Start once from
to begin the firing.
Standard Options
(pg 13-16)
Calibrate the thermocouple
temperature.
lect Type K, S or R.
Select vent
fan or alarm. This is a special op-
tion not on all kilns.
Select identi-
fication number for output to a
computer.
Set temperature sensitivity of
error codes.
Sentry
Check board for overheating.
program tamper-proof.
Se-
technicians.
For technicians.
tics tool for checking elements.
Removes thermo-
couple offset and returns the
board to factory defaults.
2.0
Stop/Back (pg 6)
Press during firing or
programming.
Stops a firing. In Options,
takes you back to IdLE.
Make a
During programming,
takes you back one step
For
each time key is pressed.
Multiple Zone
Options (pg 13)
Diagnos-
temperature difference be-
tween any two zones.
Change center heat of some
two-zone kilns.
Shows temperature of
each zone.
Delay (pg 10)
From IdLE, press 3.
Enter time in hours:minutes.
Delays the start of firing.
Add Time (pg 10)
During firing, press 2.
Each additional key press
adds five minutes to a hold.
Present Status (pg 11)
During firing, press 5.
Shows the segment that is cur-
rently firing.
Program Review (pg 8)
From IdLE or during
firing, press 6.
Shows the program that is
loaded in memory and ready to
fire, or the one that is firing.
Skip Segment (pg 11)
During firing, press 9, then
Enter.
Skips to the next ramp.
Common
Display
Messages
For a detailed list,
see pages 20-21.
IdLE = Ready
RA 1 = Rate
Largest
F 1 = Target
temperature
Hd 1 = Hold
CPLT = Fired to
completion
1

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Summary of Contents for Orton Sentry 2.0

  • Page 1 Complete Ramp-Hold Operating Instructions Sentry Digital Temperature Controller Program (pg 7, 11) Delay (pg 10) From IdLE, press 4. From IdLE, press 3. Select stored program (1 - 4). Enter time in hours:minutes. Enter rate, temperature, and Delays the start of firing. hold for each segment.
  • Page 2 Introduction Your Sentry micro processor is our most advanced generation of digital temperature control- lers. It is easy to use provided you read the manual. The controller display messages are limited to four characters. For this reason, the messages appear cryptic: IdLE instead of “Ready to begin,” CPLT instead of “Fired successfully to completion,”...

  • Page 3: Table Of Contents

    Contents Present Status ....11 Safety ....4 7 Error Messages..17 The Alarm .

  • Page 4: Safety

    Safety ruption as a power failure and turn the kiln back on when you reconnect the power. The warranty on your Sentry controller does not cover Place the kiln on the stand recommended by the damage from overfiring, regardless of the circumstances. It manufacturer.

  • Page 5: Getting Started

    Chapter 1 The top dot indicates a signal to turn on the relay for the top section of the kiln. The bottom dot indicates a signal to power the bottom section. Ig- Getting Started nore the center dot. The top dot indicates a signal to turn on the top section relay, the middle dot to the middle Room Temperature section, and the bottom dot to the bottom section.

  • Page 6: Theory Of Operation

    Chapter 2 If you are using a portable, separate controller, you will need to install the thermocouple onto the kiln. See the sep- arate TnF 2 installation instructions. Programming Theory of Operation Instructions The temperature you are firing to is called the target temperature.

  • Page 7: Firing A Stored User Program

    Each time you store an- Keep a record of Programming Steps other program, select the your stored pro- next available number, such grams and all Use these instructions for your first firings. Later as 2, at the prompt. your firings. you may prefer “Ramp-Hold Shorthand Instruc- Selecting a user number for tions,”...

  • Page 8: Hold

    Note: In Program Review, a heating rate of 9999 is Example: You fire at a rate of 500°F per hour to 1450°F displayed as . When a kiln is heated at full with your first segment. You want the kiln to cool at a rate power, it may overshoot the target temperature, espe- of 100°F per hour down to 700°F.

  • Page 9: Temperature Overshoot

    Chapter 3 The temperature reached during the last segment The current kiln temperature Sample Firing Note: If the alarm (see page 11) sounded, and then the kiln fired to completion, you will see instead Programs . Press will appear. Temperature Overshoot These sample firing schedules illustrate different ways to When a kiln is heated at too fast a rate, it may overshoot program the Sentry.

  • Page 10: Glass Slumping Schedule

    Chapter 4 Stained glass, ", 2 layers, full fuse. The fusing tempera- ture will vary depending on the brand of glass, the batch, and even on the color. Vent the lid. Set the alarm to 500°F. Other Features When the alarm sounds, close the lid from venting position and insert peephole plugs.

  • Page 11: Present Status

    Present Status Enter the new temperature. Press . The kiln will continue firing. Press during a firing to display the current segment that is firing. Either of If you touch , enter a new temperature, and forget to the following messages will appear in press , the controller will merely continue firing Present Status:...

  • Page 12: Multiple-Zone Kilns

    Power Output Lights Chapter 5 The three dots on the right Multiple-Zone of the temperature display turn on when the controller sends a signal to the relays. Kilns The top dot shows a signal to the relay for the top section of the kiln.

  • Page 13: Two-Zone Kilns: Adjusting Heat In The Center Section (Cadj)

    Two-Zone Kilns: Adjusting Chapter 6 Heat in the Center Section The Options Key (CAdJ) The Center Adjust op- The Options key gives you access to a list of features. tion appears only on The warranty With each press of the Options key, you will see the display two-zone kilns that contain does not cover code for the next option.

  • Page 14: Multiple-Zone Thermocouple Offset

    ample: If you took a reading from a reliable source at right. In °F, it disappears. To switch from °F to °C or vice 2000°F, you should check your controller reading at versa: around 2000°F. From , press repeatedly until appears.

  • Page 15: Aop Outlet (Aop)

    Press . Use the and keys to select Deviation setting, the alarm sounds. Temperature Devia- tion affects these error messages (see pages 17 - 18): Fail to Heat After selecting one of the above, press . Press to return to Fail to Cool High Temperature Deviation AOP Outlet (AOP)

  • Page 16: Electronics Temperature (Elec)

    Element Test (TEST) . The temperature displayed is the maximum oper- ating temperature programmed in the Sentry for your kiln. Test the Heating Elements and Relays (This temperature is shown on the electrical data plate.) It This test is useful when measuring the wall receptacle can be altered only at the factory.

  • Page 17: Error Messages

    Terminating Error Chapter 7 Messages Error Messages error messages turn off Error messages are accompanied by an alarm. the kiln and flash the following: Non-interrupting messages do not stop the firing. Ter- Total firing time in hours and minutes minating error messages do. The kiln shutoff temperature FTH, FTC, HTdE and LTdE error messages are based The current kiln temperature...

  • Page 18: Htde / High Temperature Deviation

    HTdE / High Temperature PLOG Error Codes Deviation A PLOG error code means the controller failed a self-di- agnostic test. A chattering, noisy relay, low voltage, and the During a heating-up ramp or a hold, the temperature is wrong relay type can cause a PLOG error. The controller above the deviation setting.

  • Page 19: Power Failures

    Chapter 8 Fire the ware again. If the kiln shuts off within 100°F/56°C of maturity, Power Failures and the temperature drops 50°F/28°C or more after the kiln shuts off, do not depend on the witness cones. Once they cool 50°F/28°C after they have been heated to The Sentry handles a power failure in two ways: within 100°F/56°C of maturity, they will not bend prop- After a brief power failure, the controller continues...

  • Page 20: Appendix A: Display Messages

    Appendix A: Display Messages Message Definition Page Reference Message Definition Page Reference Abort Electronics Too Hot 17 The firing was stopped. The Sentry circuit board is too hot, so the kiln shut off. Alarm 7, 9, 11, 15, 17 Thermocouple Failed 12, 17 ALAR appears either when you are entering an alarm tem- The thermocouple failed.
  • Page 21 Message Definition Page Reference Message Definition Page Reference Ready to Begin underfire your kiln, which is better than overfiring it. The K-Type thermocouple is standard on most kilns.) The Sentry must display the IdLE message before you can begin firing or programming. Safety Lid is Open This is the maximum temperature the Sentry is programmed...

  • Page 22: Appendix B: Upgrading Instructions

    Appendix B: Upgrading Instructions Upgrading the DTC 100, 600, 800 & 1000 Series to the Sentry CAUTION: Cut off the extra terminal(s) and jumper Unplug the kiln or disconnect the power. Remove wire(s) unless they attach to the 4 screws holding the controller faceplate to the relays.

  • Page 24: Appendix C: Quick Programming

    Appendix C: Sentry Ramp-Hold Shorthand Instructions After you press the keys in the left column, the message to the right will appear. KEYS TO PRESS DISPLAY COMMENTS PROGRAM AND FIRE THE KILN. Apply power to kiln Press Enter if IdLE does not appear. Enter program number.

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