Sentry Industries Sentry 2.0 operating instructions Ramp-Hold Programming, User Programs User

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.

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 ENTERif IdLE does not appear.)

2Press 4. USER will appear. Enter a number from 1 to 4.

3Press ENTER. rA 1 will appear. Enter firing rate for segment 1 (temperature change per hour: from 1° to 9999°).

4Press ENTER. °F 1 (or °C 1) will appear. Enter the target temperature of segment 1.

5Press ENTER. Hd 1 will appear. Enter seg- ment 1 hold time in hours/minutes (e.g. 12 hours, 30 minutes = 12.30). No hold = 0.

6Press ENTER. If FN 1 appears, and you have an AOP receptacle on your kiln, select ON or OFF. Press ENTER. (For more details on AOP, see AOP option, page 20.)

7Continue entering values for the segments needed. When RA _ appears for the first segment you don’t need, press 0, then ENTER. IdLE will appear.

8To set Alarm: press 7. ALAR will appear. Enter alarm temperature. (Enter 0 to turn alarm off.) Then press ENTER. IdLE will appear.

9To set Delay: press 3. dELA will appear. Enter delay time (i.e. 12 hours, 30 minutes = 12.30). Then press ENTER. (Delay zeroes out after each completed firing.) IdLE will appear.

10To start program, press ENTER once. STRT will appear, then kiln temperature. If a delay was programmed, STRT will ap- pear, then time remaining until start. To stop the firing, press STOP.

We recommend using Program Review (page 6) before firing. When program fires to completion, CPLT will appear. Press ENTER. IdLE will ap- pear. To shut off the alarm when it sounds during a firing, press ENTER.

User Programs (USER)

When you enter Ramp-Hold mode, the first prompt to ap- pear is USER , meaning, “Select one of your programs.” You, the user, can make your own firing schedules and store them in memory. A firing schedule, or program, is the seg- ments needed for a firing. To make a segment, you will need three facts:

■rate (how fast temperature changes in degrees per hour)

■target temperature

■hold, if any

The controller can retain four user programs in memory even when power is turned off. User programs are num- bered from 1 through 4. User program #1 can have up to 20 segments. User programs #2 - #4 can have ten segments each. You don’t have to use all 20 or all 10 segments—only the number needed per firing. Often one segment is all you will need. A User program can be as simple as a single ramp.

When using Ramp-Hold for the first time, press 1 when USER appears. Your first firing will be stored as User Pro- gram #1.

Each time you store another program, select another available number, such as 2, at the USER prompt. Adding a program to a user number over-writes any existing program stored there. Write down your User Programs.

Note: If you don’t need all the segments available in a User program, zero out the unused segments. First, enter values for the segments needed. At the

Write down each program stored in memory. Before firing, use Program Review to be sure everything is correct.

RA _ prompt for the segment you don’t need, press

0, then ENTER. The display will return to IdLE .

Note: For repeat firings that you don’t want to in- advertently change, see Program Lock, page 20.

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