Page
ST315
User
Handbook
6
Programming
A firing segment
An ST315 firing segment comprises a ramp followed by a soak period.
Two segments can be used for simple firing (biscuit firing for example) or
up to 9 segments can be used per program for complex firing (crystal glaz-
ing or glass-making for example).
The ST315 ramps the kiln temperature at the required ramp rate until the
kiln reaches the soak temperature. It then soaks (dwells) at the soak tem-
perature for the soak time. It then runs the next segment until the end of
the program is reached.
The ST315 is capable of both positive (heating) ramps and negative
(cooling) ramps—as used in glassmaking for annealing. The type of ramp
is clearly shown on the mimic display during firing.
The ramp rate is settable in the range 1°C/hour to 999°C/hour or
FULL
(full power) or
End
(end of program).
The soak temperature is settable over the range 0 to 1320°C.
The soak time is settable over the range 00.00 (no soak) to 99 hours 59
mins.
Note: during soaking the ST315 display alternates every 5 seconds
between kiln temperature and soak time remaining.
Pr
ogramming
soak temperature
heating ramp
cooling ramp
soak period
Delay
ºC
t
Cooling
Heating
Soaking
ST315 User Handbook
Page 15
Program Pause Facility
While firing press and hold down the
ª
key for about 4 seconds. The
ST315 will pause the executing program. To un-pause the program press
and hold down the the
ª
key again for about 4 seconds. The effects of
pausing are as follows:-
If paused during ramping the kiln temperature will be held (soaked)
in-
definitely
at the current kiln temperature. The ramp will continue when
un-pause is selected.
If paused during soaking then the soak time will be
extended indefinitely
.
The remainder of the soak period will be resumed when un-pause is se-
lected.
Segment advance (
©
key held down for about 4 seconds) can also be used
to terminate the pause. This will advance the segment and will immedi-
ately terminate a paused soak—advancing to the next segment (if any).
Changes made to the operation of the ST315 in this way are temporary
and are not stored.
PAUSED
600
°C
°C/hr
hr.min
As a warning during pause a double
beep is sounded every 10 seconds,
the display scrolls
PAUSed
for 5
seconds then shows the kiln tem-
perature for 5 seconds.
Adjusting While
Firing
WARNING - PROGRAM PAUSE
The program pause facility should be used with care. Program execution is
suspended and the kiln will be held at its current temperature indefinitely.
If left too long at high temperatures kiln damage could result.
