A Ramp-Hold Practice Program
To practice using the controller, we will enter a pro-
gram that includes three segments. The last segment is
a cooling segment.
Using the programming instructions on the next col-
umn, enter this firing schedule. The use Program Review
(page 3) to check for accuracy.
PrO1
rA1 = 250
°
F 1 = 750
HLd 1 = 00.00
rA2 = 900
°
F 2 = 1425
HLd 2 = 00.30
rA3 = 150
°
F 3 = 750
HLd 3 = 00.00
RA4 = 0000 (zeroes cancel segments 4-8)
Skipping a Segment in a Ramp-Hold Program
You can skip a segment in a Ramp-Hold program as
follows:
1. The kiln is firing. Press the
Up Arrow
key.
2.
SStP
will appear. Press the
Up Arrow
key again.
The firing will skip to the next segment.
Skip Segment Example
Skipping to a Cooling Segment:
You have pro-
grammed a target temperature of 1425°F for glass
fusing, followed by a segment for controlled cooling.
Watching the glass through the peephole, you notice
that the glass edges have rounded nicely at 1375°F.
Use Skip Segment to end the firing segment and
being one for slow cooling.
Note:
Make a note of the temperature at which the
glass fused. Program that temperature for the next
firing of that type of glass.
Ramp-Hold Programming Instructions
Note:
You have up to 8 segments available in
Ramp-Hold. If you don’t need all 8, zero out the
unused segments. See step 6 below.
1. From
IdLE
press
START
.
2. Press the
Up Arrow
key (not the
Down Arrow
).
PrO1
PrO2
PrO3
and
PrO4
are Ramp-Hold
programs. When the one you want appears,
press
START
. (Ignore
SPd1
-
SPd5
.)
3. rA 1
will appear. Enter fi ring rate (tempera-
ture change per hour) for segment 1. (1° =
slowest rate. 1799°F/999°C = full power.) Then
press
START
.
4. °F 1
or
°C 1
and the target temperature from
the last firing will appear. Use the arrow keys
to change the temperature. Then press
START
.
5. HLd 1
and the hold time from the last firing
will appear (e.g. 1 hour, 10 minutes = 01.10).
Use the arrow keys to change the hold time.
Then press
START
.
6. Continue entering values for the segments
needed. When
rA_
appears for the next seg-
ment that you don’t need, select
0000
. The
press
ENTER
. This will zero out the remaining
segments. (Example: You need only 1 seg-
ment. When
rA 2
appears, enter
0000
.
7. Strt
will appear. Press
START
to begin firing.
-On-
will appear, the Run indicator light will
begin blinking, and the kiln will begin firing.
To stop a firing before completion, press
START/
STOP
.
StOP
will appear, alternating with total firing
time and kiln temperature.
Note:
Do not be concerned if your kiln makes a
clicking sound during firing. Kilns use relays to
power the elements. The relays click each time their
electrical contacts come together.
Note:
The kiln’s actual firing rate may be less than
the rate you programmed, depending on the kiln
model, available voltage, and density of the load
you are firing.
When the kiln fires to completion, it will beep for 30
seconds. The display will show the following:
Firing time
Present temperature
CPLt
= Fired to completion
To return to
IdLE
, press
START
.
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