Sentry Industries Sentry 2.0 Ready to Begin, Lid is Open, Program Lock, Cone Offset, Pre-Heat

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Message

Definition

Page Reference

 

 

 

IdLE

 

Ready to Begin

5

The Sentry must display the IdLE message before you can begin firing or programming.

LId

Lid is Open

5

When LId 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.

LOCK

Program Lock

20

With this option activated, a stored program cannot be altered or removed from memory.

LTdE

Low Temperature Deviation 22

This message appears when the kiln is below the Temperature Deviation setting in the TEDE option.

OFST

Cone Offset

17

Adjust a Cone-Fire program to bend the matching witness cone on the kiln shelf.

PF 2

Power Failure

22, 23

The power failed. When power came back on, the temperature was below 212￿F/100￿C.

PF 3

Power Failure

22, 23

The power failed near the end of a firing.

PF

Power Failure

22, 23

There was a power failure during firing. The kiln continued firing after power came back on.

PLOG

Diagnostic Test Failure 23

 

 

 

PRHT

Pre-Heat

9, 10

In a Cone-Fire program, Pre-Heat heats the ware slowly to 200￿F/93￿C for the length of time you specify. Pre-Heat is de- signed to remove moisture safely from greenware.

RA 1

Rate

13

RA 1, RA 2, RA 3, etc., appears in Ramp-Hold programming, Pro- gram Review, and Present Status. When RA 1, 2, 3, etc. appear during programming, the controller is asking you for firing rate for each segment. Rate means how fast the firing progresses, in de- grees of temperature per hour. Every segment must have a firing rate. The number after RA is the segment number. Each segment in a Ramp-Hold firing is numbered, starting with 1. Program Re- view shows firing rate after RA 1, 2, 3, etc. In Present Status, RA 1, 2, 3, etc. means the segment that the firing is in at that moment.

RST

Reset

21

The RST option erases cone and thermocouple offsets, selects ￿F operation, erases stored programs in Ramp-Hold, and se- lects Type-S thermocouple. Note that if you use Reset, and your kiln is equipped with a Type-K thermocouple, you must use the TC option to select Type-K. (Reset selects Type-S as a safety precaution. If you had a Type-S thermocouple and Reset se- lected Type-K, your kiln would overfire. On the other hand, if you have a Type-K thermocouple, Type-S selected would underfire your kiln. The type K thermocouple is standard on most kilns.)

S 20

Slow Speed

17

Cone-Fire slow speed shows in Program Review as S 20. This is also how slow speed is listed in the SPd Speed option.

SFTY

Safety

20

This is the maximum temperature the Sentry is programmed for your kiln. It can be altered only at the factory.

Message

Definition

Page Reference

 

 

 

SKIP

 

Skip Segment

7

If you press the Skip Segment key during a firing, SKIP will ap- pear. If you press the key again, the firing will skip to the next seg- ment.In Cone-Fire, Skip Segment takes you only out of Pre-Heat or Hold.

SLOW

Slow Speed

10

In Cone-Fire programming, if you press ENTER when SLOW ap- pears, the kiln will program to fire at slow speed.

SOFT

Software Version 21

This option gives the version of software loaded into your Sentry.

SPd

Speed

10, 17

The SPd message appears during Cone-Fire programming and in Options. In the SPd option, accessed through the option key, change the speed of a Cone-Fire program beyond the standard fast, medium or slow. While programming a firing for Cone-Fire, choose slow, medium or fast speed at the SPd prompt.

STd

Standard Speed

17

Cone-Fire medium speed appears in the Sentry as STd, or Stan- dard. This is because medium speed is the standard firing pro- gram used in Cone-Fire. Fast and Slow speeds alter the stan- dard firing program.

STRT

Firing Started

10, 13

This appears when firing begins. Do not be concerned if it takes a moment for the relays to turn on. The Sentry is processing data.

T123 Zone Temperatures 21

This option shows temperatures in each zone.

TC

Thermocouple Type 19

Choose between types K, S, or R thermocouple. It is important to select the correct type, or the controller will not read temperature accurately.

TcdE

Uneven Temperature 23

This is an error message for multiple zone kilns. It means the tem- peratures of the zones are out of balance. This is usually caused by a miswired kiln or by a defective relay.

TCOS

Thermocouple Offset 18

Calibrate the controller’s temperature. This compensates for temperature drift, or aging, of a thermocouple.

TCR

 

Thermocouple Reversed

23

The thermocouple wires are reversed.

 

 

 

 

TEDE

Temperature Deviation

20

The Sentry includes error messages to warn you that the kiln is not maintaining the programmed temperature. The sensitivity of the error messages is based on a temperature entered in the TEDE option.

TEST

Element Test

21

This option is for testing the elements and thermocouples. If you test a thermocouple with a lighter, the temperature display re- sponds faster during Test than during IdLE display.

USER

User Program

13, 14

In Ramp-Hold programming, the USER prompt is asking you where you want to place the program in memory. The Sentry has four spaces in memory: 1, 2, 3, 4. Keep a record, on paper, of the programs in memory.

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Contents Multiple Zone Options Standard OptionsIntroduction Contents Room Temperature and Humidity SafetyThunder Storms and Power Surges Basic PointersDisplay Lights How to Get IdLE to DisplayFiring Completion Message Repeat FiringsKeys Enter/Start Cone Numbers Skip SegmentOptions Key Stop/Back KeyCone-Fire How to Position Cones on the ShelfPyrometric Witness Cones Firing SchedulesSpeed SPd Cone-Fire FeaturesPre-Heat Prht Hold HOLd Cone-Fire ProgrammingMirror Test Slow Cooling Cool When the Kiln Shuts Off Too SoonFor Kilns with AOP Outlet Wrong Thermocouple TypeDefinition of a Segment Ramp-HoldUser Programs User Ramp-Hold ProgrammingRate Firing a Stored User ProgramAOP Fan Segments for Controlled CoolingStarting a Firing in a Hot Kiln Glass Fusing Firing ScheduleGlass Slumping Firing Schedule Ceramic FiringsMultiple Zone Kilns Cone-Fire Options OptionsCone-Fire Speed Spd Cone Offset OfstFan FAN General OptionsThermocouple Offset Tcos Thermocouple Type TC Selecting F or C CHGMaximum Temperature Sfty Temperature Deviation TedeElectronics Temperature Elec AOP Outlet AOPMultiple Zone Options Non-Interrupting Error Messages Error MessagesTerminating Error Messages Plog Error Codes How the Sentry Handles Power FailuresTCdE / Uneven Multiple Zone Temperatures TCR / Thermocouple Leads ReversedAppendix a Display Messages Diagnostic Test Failure Power FailureReset SafetySegment Low Fire Cones FCone Rate 1 Temp Rate 2 Temp Low Fire Cones C Appendix B Preset Standard Cone-Fire Schedules CUpgrading the DTC 100, 600, 800 & 1000 to the Sentry Appendix C Upgrading InstructionsPage 022 Cone Self-Supporting Cones Pre-Fire Number Color010 05 1/2Sentry Ramp-Hold Shorthand Instructions Appendix EKiln is now firing. Use Program Review by pressing Sentry Cone-Fire Shorthand Programming Appendix FKiln is now firing to the cone you selected

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