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Orton Sentry 2.0 Operating Instructions Manual

Digital temperature controller
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Sentry 2.0
Digital Temperature Controller
Complete Operating Instructions
Cone-Fire (pg 8-11)
From IdLE, press 1.
Available only on ceramic
kilns. Fires to a pyrometric
cone. Enter cone, speed,
pre-heat, hold, and slow cool.
Ramp-Hold (pg 12-15)
From IdLE, press 4.
Select stored program (1 - 4).
Enter rate, temperature, and
hold for each segment.
Alarm (pg 6)
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 to be-
gin the firing.
Options (pg 17 - 21)
From IdLE, press 0. Press
Enter for option displayed.
Cone-Fire Options
SPd
Speed Change the speed
of a Cone-Fire program beyond
the Fast, Medium, or Slow.
OFST
Cone Offset Adjust con-
troller to a witness cone.
FAN
Vent Fan Selects when
the vent fan will operate. (Special
option not on all kilns.)
Standard Options
TCOS
Thermocouple Offset
Calibrate the thermocouple
temperature.
CHG-
Select °F or °C.
TC
Thermocouple Type Se-
lect Type K, S or R.
AOP
AOP Outlet Select vent
fan or alarm. This is a special op-
tion not on all kilns.
See pages 28-29 for instructions on upgrading your DTC
100, 600, 800 or 1000 series board to the Sentry.
Id
Computer ID Select identi-
fication number for output to a
computer.
TEdE
Temperature Deviation
Set temperature sensitivity of er-
ror codes.
SFTY
Maximum temp.
ELEC
Electronics Temp.
Check board for overheating.
LOCK
Program Lock Make a
program tamper-proof.
CFG
Configuration Code
For technicians.
SOFT
Software Version
For technicians.
TEST
Element Test Diagnos-
tics tool for checking elements.
RST
Reset Removes cone
and thermocouple offsets, etc.
Stop/Back (pg 7)
Press during firing or
programming.
Stops a firing. In Options,
takes you back to IdLE.
During programming,
takes you back one step
each time key is pressed.
Multiple Zone Options
DIFF
Difference Largest
temperature difference be-
tween any two zones.
CAdJ
Center Adjustment
Change center heat of some
two-zone kilns.
T123
Zone Tempera-
tures Shows temperature of
each zone.
Delay (pg 6)
From IdLE, press 3.
Enter time in hours:minutes.
Delays the start of firing.
Add Time (pg 6)
During firing, press 2.
Each additional key press
adds five minutes to a hold.
It works in both Ramp-Hold
and Cone-Fire.
Present Status (pg 6)
Press 5 during firing.
Shows the segment that is
currently firing. Works in
both Ramp-Hold and
Cone-Fire.
Program Review (pg 6)
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.
Cone Table & Skip
Segment (pg 7)
From IdLE or during
firing, press 9.
From IdLE, shows tempera-
ture for the cone you enter.
While Firing: In Ramp-Hold,
skips to the next ramp. In
Cone-Fire, skips out of
Pre-Heat or Hold.
1

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Summary of Contents for Orton Sentry 2.0

  • Page 1 Sentry 2.0 Digital Temperature Controller Complete Operating Instructions See pages 28-29 for instructions on upgrading your DTC Cone-Fire (pg 8-11) From IdLE, press 1. Available only on ceramic kilns. Fires to a pyrometric cone. Enter cone, speed, pre-heat, hold, and slow cool.
  • Page 2 Introduction Thank you for purchasing the Sentry micro processor, our most advanced generation of digi- tal temperature controllers. The easiest way to learn to operate the Sentry is to sit down in front of it with these instructions and play with it. Spend time understanding the controller before you begin to use it.

  • Page 3: Table Of Contents

    Contents Basic Pointers ..4 Which Instructions Apply to Your Controller ..4 Room Temperature and Humidity. . . 4 Thunder Storms and Power Surges . 4 Display Lights .

  • Page 4: Basic Pointers

    Safety The warranty on your Sentry controller does not cover damage from overfiring, regardless of the circumstances. It is the operator’s responsibility to make sure the kiln turns off at the end of the firing. Follow these safety rules in addition to the ones in your kiln or furnace manual.

  • Page 5: Display Lights

    Display Lights Single Center Light: Time A lower center dot appears during time display. It sepa- rates hours from minutes (i.e. 1 hour, 30 minutes displays as 01.30). During temperature display, the dot disappears. Power Output Lights The Sentry turns on the heating elements intermittently through relays.

  • Page 6: The Keys

    Chapter 2 The Keys Correcting Entries If you enter the wrong temperature, cone, time, etc., while programming, enter 0000. Then enter the correct numbers before pressing ENTER. See also the Stop/Back Key, page 7. 1 / Cone Fire Cone-Fire is a method of firing ceramics to a pyrometric cone.

  • Page 7: Cone Numbers & Skip Segment

    Setting Alarm From Idle 1 From , press 7. will appear alternating IdLE ALAR with the last alarm temperature entered. 2 Enter alarm temperature. Press ENTER. appear. (Enter 0000 to turn alarm off.) Note: 9999, as an alarm temperature, automati- cally changes to the maximum temperature rating of your controller.

  • Page 8: Cone-Fire

    Chapter 3 Cone-Fire Cone-Fire mode is based on pyrometric cones. It is not designed for heat treating, glass fusing and enameling. For these firings, see “Ramp-Hold,” page 12. Use Ramp-Hold to fire ceramic pieces that require a custom firing schedule, such as some types of stone- ware sculpture or crystalline glaze.

  • Page 9: Low Fire Cones 022 - 011

    Low Fire Cones 022 - 011 This range includes decals, over-decorations, lusters, and golds. The firing can be fast. Good venting is important, because oils and other organics burn off. Do not close the lid from the vented position until all odor has disappeared. Low Fire Cones 022 - 011 Firing Schedule Segment Rate Per Hour...

  • Page 10: Hold (Hold)

    Cone-Fire Programming Use these instructions for your first firings. Later you may prefer “Cone-Fire Shorthand Pro- gramming,” page 32. As the Sentry prompts for cone, speed, pre-heat, hold, and slow cooling, values entered for the last firing will appear. To use these values again, press ENTER. To fire without Delay or Alarm: Follow steps 1 through 7 below.

  • Page 11: Slow Cooling (Cool)

    Watch the pyrometric witness cones through the peep- hole. Press STOPwhen the correct witness cone bends, not- ing how much Hold time was needed. Program that much Hold time the next time you fire the same type of ware loaded to the same capacity.

  • Page 12: Ramp-Hold

    Chapter 4 Ramp-Hold Definition of a Segment Ramp-Hold fires in segments. Every segment must have a target temperature and a heating rate to reach that temper- ature. Shown in diagram A is a segment with a temperature of 750°. Diagram A: a single segment. Rate is figured in degrees per hour.

  • Page 13: Ramp-Hold Programming

    Ramp-Hold Programming Use these instructions for your first firings. Later you may prefer “Ramp-Hold Shorthand In- structions,” page 31. As the program prompts for segments, rate, temperature, etc., you will see values from the last firing. To use these again, press ENTER. To control cooling, set the segment to a lower temperature than that of the preceding segment.

  • Page 14: Firing A Stored User Program

    Firing a Stored User Program To use a stored program, press 4 from IdLE. Enter the program number at the prompt. Press ENTER. If USER there are no changes to the program, press STOP. appear. The controller is ready to fire your selected program. To begin firing, press ENTER once.

  • Page 15: Glass Fusing Firing Schedule

    If you are not using a kiln vent, leave peephole plugs out and vent the lid. Set the alarm to 1000°F. When the alarm sounds, close the lid from venting position. Set the alarm again, this time to 1850° F. When it sounds, check the witness cone through the peephole.

  • Page 16: Multiple Zone Kilns

    Chapter 5 Multiple Zone Kilns Note: See also Multiple Zone Options, page 21. An Overview of Multiple Zone Firing If you are not sure how many zones your kiln has, look into the firing chamber. The number of thermocouple tips indi- cates the number of zones.

  • Page 17: Options: Cone-Fire

    Chapter 6 Options The Options key gives you access to a list of features. With each press of the Options key, you will see the display code for the next option. 1 When you find the option you want to use, press ENTER.

  • Page 18: Interpreting Cone Bending

    Place witness cones in several locations in the kiln. How to Use Cone Offset Cone Offset changes the shut-off point of the cone by the degrees of temperature shown in the chart below. 1 From , press OPTIONSuntil IdLE 2 Press ENTER. The current Cone Offset adjustment number will appear.

  • Page 19: Calibrating Thermocouple Offset With A Digital Pyrometer

    Calibrating Thermocouple Offset With a Digital Pyrometer You can calibrate Thermocouple Offset using a cali- brated digital pyrometer. One way to calibrate your pyrome- ter is to take it to a heat treater or other location that has a cal- ibrated controller you can trust.

  • Page 20: Aop Outlet (Aop)

    AOP Outlet (AOP) Select Vent Fan or Alarm for the Auxiliary Output The optional “AOP” (Auxiliary Output) is an electrical receptacle mounted in the kiln’s switch box. This outlet can power a kiln vent or an external alarm, such as a bell. The AOP is a special-order option that might not be on your kiln.

  • Page 21: Configuration Code (Cfg)

    Configuration Code (CFG) Information for Technicians From , press OPTIONS repeatedly until IdLE pears. Press ENTER. The factory configuration code will ap- pear. Press ENTER. Press STOP to return to configuration code can be changed only at the factory. Software Version (SOFT) Information for Technicians From , press OPTIONS repeatedly until...

  • Page 22: Error Messages

    Chapter 7 Error Messages Error messages are accompanied by an alarm. Non-interrupting messages do not stop the firing. Ter- minating error messages do. FTC, FTH, LTdE, and HTdE error messages are based upon the setting in the Temperature Deviation (TEdE) option.

  • Page 23: How The Sentry Handles Power Failures

    How the Sentry Handles Power Failures The Sentry handles a power failure in two ways: 1 After a brief power failure, the controller continues firing as before. It shows a normal temperature dis- play alternating with 2 After an extended power failure, appear.

  • Page 24: Display Messages

    Appendix A: Display Messages Message Definition AbRT Abort The firing was stopped. ALAR Alarm ALAR appears either when you are entering an alarm tempera- ture or when the alarm is sounding during a firing. To stop an alarm, press any key except STOP. If the alarm goes off when you first begin firing, it is because it was set for a lower tempera- ture than the present temperature.
  • Page 25 Message Definition IdLE Ready to Begin The Sentry must display the IdLE message before you can begin firing or programming. Lid is Open When appears, the kiln is equipped with a lid safety switch, and the lid (or door) is open during firing. Or a two-pin connector on the back of the board is missing.

  • Page 26: Standard Cone-Fire Schedules

    Appendix B: Preset Standard Cone-Fire Schedules - °F These are the firing schedules programmed in Cone-Fire mode. To customize a schedule, write down your changes. Then load your new schedule into Ramp-Hold. Low Fire Cones °F Segment 1 Cone Rate 1 Temp. 1 1004 1051 1144...
  • Page 27 Appendix B: Preset Standard Cone-Fire Schedules - °C These are the firing schedules programmed in Cone-Fire mode. To customize a schedule, write down your changes. Then load your new schedule into Ramp-Hold. Low Fire Cones °C Segment 1 Cone Rate 1 Temp. 1 Medium Fire Cones °C Segment 1 Cone...

  • Page 28: Upgrading The Dtc 100, 600, 800 & 1000 To The Sentry

    Appendix C: Upgrading Instructions Upgrading the DTC 100, 600, 800 & 1000 to the Sentry 1 Unplug the kiln or disconnect the power. Remove the 4 screws holding the controller faceplate to the switch box. Gently remove the old controller. 2 Disconnect the wires from the old controller.

  • Page 30: Temperature Equivalents

    Appendix D: Temperature Equivalents For Orton Self-Supporting Pyrometric Cones °F Cone Self-Supporting Cones Number Heated at: 27° F 108° F Per Hour* Per Hour* Per Hour* — 1087 — 1112 — 1159 1213 1252 1267 1319 1301 1360 1368 1422 1382 1456 1395...

  • Page 31: Ramp-Hold Shorthand

    Appendix E: Sentry Ramp-Hold Shorthand Instructions After you press the keys in the left column, the message to the right will appear. KEYS TO PRESS PROGRAM AND FIRE THE KILN. Apply power to kiln 1, 2, 3, or 4 ENTER Rate ENTER Temperature...

  • Page 32: Cone-Fire Shorthand

    Appendix F: Sentry Cone-Fire Shorthand Programming After you press the key(s) in the left column, the message to the right will appear. Press 1from spond, your controller does not have Cone-Fire. KEYS TO PRESS Apply power to kiln Cone # (i.e. 05) ENTER 1(Fast), 2 (Med.), or 3 (Slow) ENTER...

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