Sentry Industries Sentry 2.0 - Manual (Page 13)

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
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.
13
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.)
2 Press 4. USER will appear. Enter a number
from 1 to 4.
3 Press ENTER. rA 1 will appear. Enter firing
rate for segment 1 (temperature change per
hour: from 1° to 9999°).
4 Press ENTER. °F 1 (or °C 1 ) will appear.
Enter the target temperature of segment 1.
5 Press 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.
6 Press 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.)
7 Continue entering values for the segments
needed. When RA _ appears for the first
segment you don’t need, press 0, then
ENTER. IdLE will appear.
8 To set Alarm: press 7. ALAR will appear.
Enter alarm temperature. (Enter 0 to turn
alarm off.) Then press ENTER. IdLE will
appear.
9 To 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.
10 To 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.
Write down each program stored in memory.
Before firing, use Program Review to be sure
everything is correct.