Page
ST325 User Handbook
18
Other Features
Other Features
Info Key
Hold down the green f
n
key and then press the
i
key to display the energy
used in kW hours. If pressed during a firing it shows the energy used so
far. After a firing it shows the total energy used for that firing. This infor-
mation is stored while power is off and is only reset to zero when a new
firing is started. If the value displayed is always
0
.
0
then the kiln power
rating has not been configured into the ST325 - see installation handbook.
Keeping the green f
n
key pressed down, press the
i
key again to display
the current set point (target temperature).
Keyboard Lock Facility
1
.
200
°C
°C/hr
hr.min
The keys on the ST325 can be locked so that pressing them has no effect.
This is an anti-tamper feature used to ensure that the operation of the
ST325 or the program data cannot be altered by un-authorised people.
The ST325 can be locked when it is idle (not firing) or while it is firing. It
cannot be locked while it is being programmed.
If the left-hand decimal point in the
display is lit then the ST325 is locked.
Press and hold in both the
©
&
ª
keys for 5 seconds to unlock the
ST325.
1200
°C
°C/hr
hr.min
If the left-hand decimal point in the
display is not lit then the ST325 is not
locked. Press and hold in both the
©
&
ª
keys for 5 seconds to lock the
ST325.
Power Failure Recovery
If power fails during firing then the ST325 recovers as follows:-
For power failure during start delay then by default the ST325 times off the
remaining start delay when power returns (configurable - can be set to fire
immediately when power returns - see installation manual).
For power failure during ramping the ST325 continues the ramp it was pre-
viously executing.
For power failure during soaking the ST325 ramps back up to soak tem-
perature at the correct ramp rate then applies the remaining soak period.
Power failure recovery can be disabled if required (see installation hand-
book) - the ST325 will then lock up with
FAIL
displayed and kiln off in the
event of power failure.
ST325 User Handbook
Page
7
When not firing no lamps lit on the mimic panel, the firing lamp is off
and the display shows the kiln temperature with the °C indicator lit.
Segment 1 is displayed.
Changing / entering a program
.
20
°C
°C/hr
hr.min
If the left-hand decimal point is on then the
keyboard is locked. Press the
©
&
ª
keys
together & hold down for 5 seconds to
unlock.
Note: holding down the
©
or
ª
keys causes rapid change of the
displayed value.
150
°C
°C/hr
hr.min
¨
then displays the ramp rate in the range
1 to 999°C/hr or
FULL
or
End
.
This can be
altered with the
©
&
ª
keys. The
HEATING RAMP or COOLING RAMP
lamp on the mimic display will flash.
600
°C
°C/hr
hr.min
¨
then displays the soak temperature in
the range 0 to 1320°C. This can be altered
with the
©
&
ª
keys. The SOAK
TEMPERATURE lamp on the mimic
display will flash.
Programming
00
.
15
°C
°C/hr
hr.min
The next push of the
¨
key displays the
soak time in the range 00.00 to 99.59 (99
hours 59 mins). This can be altered with
the
©
&
ª
keys. The SOAK TIME lamp on
the mimic display will flash.
A further push of the
¨
key increments the segment display digit and
firing data for the next segment can be entered. Continue
programming susequent segments as required.
Pr
.
12
°C
°C/hr
hr.min
1
Press the
¨
key to display the currently
selected (flashing) program number. This
can be changed as required with the
©
&
ª
keys. There are 32 programs available.
End
°C
°C/hr
hr.min
Data entry is terminated if
End
is selected
for a ramp rate with the
ª
key. Data entry
is also automatically terminated if 32
segments have been entered.
2
