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Orton Sentry Xpress 4.0 Manual

Digital temperature controller cone fire/ramp-hold version
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Cone Fire/Ramp-Hold Version
Sentry Xpress
Digital Temperature Controller
°F
°C
°C Display Dot

Temperature Display

Tempera-
ture display is in °F.
Temperature display is in °C.
See page 13 for instructions
on selecting °F and °C.
Time Display
: Sepa-
rates hours from minutes. Ex-
ample: Display shown above
is 1 hour and 30 minutes.
IM-222/8-07
Hr./Min.
When Lit
START/
STOP
Enter
SENTRY
Program
M I C R O
P R O C E S S O R
START/STOP Key
Starts and stops a firing.
Press after each
programming step. It works like the
Enter key on a computer.
Up Arrow Key
press
. Press
to select Cone-Fire or
Ramp-Hold. Pages 6, 8
During a
Ramp-Hold firing, press the
.
will appear. Press
. The current segment
ramp or hold number will ap-
pear. To skip, press
again. Page 10
During a
Ramp-Hold firing, press
repeatedly until
pears. Press
. Each time
you press the
, the
hold time for the current seg-
ment will increase by 5 minutes.
Then press
.
Page 10
*These features are new with the Sentry Xpress 4.0. If your controller does
not have these features, it is an earlier controller.
HIGHER
LOWER
Skip Seg.
Delay
Review
Add Hold
4.0
Change Temp.
Xpress
T/C Offset
Alarm
The Sentry Xpress 4.0 micro processor is manufactured by the
Orton Ceramic Foundation and displays the CE mark.
During a Ramp-Hold firing,
press
repeatedly until
From
appears. Press
Use the arrow keys to change
the target temperature for the
current segment. Then press
. Page 10
ing, press
until
appears. Press
. Use the arrow keys to
change the alarm temperature.
Press
. To silence the
alarm, press any key. Page 10
ap-
At the
press
.
pear. Use arrow keys to adjust
the controller to fire hotter or
cooler. Press
. Page 13
Program
Review
Run
°F
When Off
°C
When Lit
TM
Down Arrow Key
From
you have selected will ap-
pear one step at a time.
When
press
.
press
Enter delay time. Press
. Page 4
During a fir-
During firing, press
repeatedly
. The program you
entered will appear one
step at a time. Page 4
display,
will ap-
to return to
Indicator
Lights
Light is
on during pro-
gramming.
Light is
on during pro-
gram review.
Light
blinks during firing.
press
. The program
appears,
. Page 4
From
.
1

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  • Page 1: Indicator Lights

    5 minutes. cooler. Press to return to Then press . Page 13 Page 10 *These features are new with the Sentry Xpress 4.0. If your controller does not have these features, it is an earlier controller. IM-222/8-07...

  • Page 2: Table Of Contents

    Cone-Fire Schedules....15 Orton Pyrometric Cone Chart..17 Trouble Shooter....18 Problem: Controller display is blank.

  • Page 3: General Guidelines

    Safety General Guidelines The warranty on your Sentry Xpress controller does not cover damage from overfiring, regardless of the circum- Time and Temperature stances. It is the operator’s responsibility Display to make sure the kiln turns off at the proper time.

  • Page 4: A Rapid Way To Scroll Numbers

    A Rapid Way to Note: Press during delay to end the delay and Scroll Numbers begin the firing. The maximum delay is 99 hours and 59 minutes. Power Failures During programming, hold an arrow key down several seconds, and numbers will begin to scroll rapidly. Ordi- narily, you would press to raise a number and After a power failure, the controller will continue firing...

  • Page 5: Two Firing Modes: Cone-Fire And Ramp-Hold

    Pyrometric Cone Cone-Fire mode fires the ware to a pyrometric cone number using the Orton cone tables on page 17. This mode The cones illustrated here are called self-supporting is for ceramics, pottery, stoneware, and glazes. Your sup- cones.

  • Page 6: Cone-Fire Firing Instructions

    If the kiln still does not fire hot enough, then fire to the next hotter cone number, without hold time. Adjust the Thermocouple Offset. See page 13. Customize the firing in Ramp-Hold. See the next page. Compensating for an Over-Fired Cone Fire to the next cooler cone number.

  • Page 7: When The Kiln Shuts Off Too Soon

    Ramp-Hold When the Kiln Shuts Off Too Soon Mode If the kiln shuts off before the pyrometric witness cone bends, you can turn the hot kiln back on and keep firing. Press twice. Theory of Operation From , program the next hotter cone in The temperature you are firing to is called the target Cone-Fire.

  • Page 8: Storing Programs

    Storing Programs Ramp-Hold Programming Instructions The controller can retain four Ramp-Hold programs in memory even when power is turned off. Programs are num- bered 1 - 4. Note: You have up to 8 segments available in Ramp-Hold. If you don’t need all 8, zero out the The first message to appear after you plug in your Sentry unused segments.

  • Page 9: Hold

    Hold Note: During fast cooling, do not open the door all the way. Do not force-cool the kiln with a fan. Hold is the length of time that you want the kiln to re- A Ramp-Hold main at the target temperature. Hold is also called soak or dwell time.

  • Page 10: Advanced Features

    Advanced Editing the Target Temperature Features While the kiln is firing, you can change the target tem- perature. You can edit only the segment that is firing. So if the first segment is the current one, you can edit only the first segment.

  • Page 11: Lost Wax Burnout

    Lost Wax Segment 3 lowers temperature to 800°F / 426°C, the typi- cal casting temperature for silver. (Most types of gold cast Burnout at 900°F / 482°C.) Note: Casting temperature depends on the size of the mold. The temperatures above are only a guide. See your jewelry supply dealer for temperature CAUTION: Only kilns with vent holes are designed recommendations.

  • Page 12: Error Messages

    Error Messages To return to from an FE code Try pressing any key. If that doesn’t work, turn the power off for 10 seconds. Call the factory if the error message re- mains when you turn the power back on. bAdP / Bad Programming If you get an message, check the wire connections...

  • Page 13: Tcl / Thermocouple Lag

    Selecting °F or tCL / Thermocouple Lag °C Display The heating rate is slower than 9°F / 5°C per hour and the actual kiln temperature is more than 100°F / 56°C away from the programmed temperature. The tCL alarm be- comes inactive above 500°F.

  • Page 14: Display Messages

    Display (page 8) Hold time of a segment, shown in hours and minutes. (Example: 2 hours and 15 min- Messages utes = 02.15) (Page 10) Add Hold Time: During a firing, you can extend the hold time of a segment without The firing was stopped.

  • Page 15: Cone-Fire Schedules

    Cone-Fire Schedules - °F Selecting a Fast speed in Cone-Fire increases the segment rates shown in this chart by 20%. Selecting a Slow speed de- creases the segment rates by 20%. (However, the rate shown in this chart for the last segment remains the same whether you select Fast, Medium, and Slow speeds.) Note: Your controller accepts only cone numbers that fall within the kiln’s maximum temperature range.
  • Page 16 Cone-Fire Schedules - °C Selecting a Fast speed in Cone-Fire increases the segment rates shown in this chart by 20%. Selecting a Slow speed de- creases the segment rates by 20%. (However, the rate shown in this chart for the last segment remains the same whether you select Fast, Medium, and Slow speeds.) Note: Your controller accepts only cone numbers that fall within the kiln’s maximum temperature range.

  • Page 17: Orton Pyrometric Cone Chart

    Temperature Equivalents For Orton Self-Supporting Pyrometric Cones °F °C Cone Self-Supporting Cones Pre-Fire Cone Self-Supporting Cones Pre-Fire Num-ber Color Number Color Heated at: 27° F 108° F 270° F Heated at: 15° C 60° C 150° C Per Hour* Per Hour* Per Hour* Per Hour* Per Hour* Per Hour* —...

  • Page 18: Trouble Shooter

    Trouble Shooter Controller Power Input Test Result: less than 20 volts Did you recently replace the transformer? It may be the wrong voltage. The voltage is below 20, which is not enough power for the controller. To find out the cause of low volt- Problem: Controller display is age, continue below: blank.

  • Page 19: Problem: Kiln Switch Box ½ Amp Fuses Keep Blowing

    Index UNPLUG the kiln/disconnect the power. Remove the 4 screws holding the controller faceplate to the switch box. Lift faceplate out of box and let the con- troller hang on the outside of the box with the back Abrt ......... 14 of the board facing you.
  • Page 20 Shorthand Instructions These instructions may be confusing until you have read more detailed instructions on Cone-Fire, page 6, or Ramp-Hold, page 8. Read the safety guidelines, page 2. After pressing the keys in the left column, the message in the center will appear. Cone-Fire Keys to Press Display...

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