Page
ST312
User
Handbook
18
Other Features
Energy Used Display
Pressing the
§
button at any time shows the amount of electrical 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 information 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 ST312—see installation handbook.
Keyboard Lock Facility
1
.
200
°C
°C/hr
hr.min
The keys on the ST312 can be locked so that pressing them has no effect.
This is an anti-tamper feature used to ensure that the operation of the ST312
or the program data cannot be altered by un-authorised people. The ST312
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 ST312 is locked.
Press and hold in both the
©
&
ª
keys
for 5 seconds to unlock the ST312.
1200
°C
°C/hr
hr.min
If the left-hand decimal point in the dis-
play is not lit then the ST312 is not
locked. Press and hold in both the
©
&
ª
keys for 5 seconds to lock the ST312.
Power Failure Recovery
If power fails during firing then the ST312 recovers as follows:-
For power failure during start delay the ST312 commences firing immedi-
ately when power returns. For power failure during ramp 1 or ramp 2 the
ST312 goes back into the ramp it was previously executing. For power fail-
ure during soaking the ST312 ramps back up to soak temperature at ramp
rate 2 then applies the full soak period. This recovery scheme can be dis-
abled if required (see installation handbook) - the ST312 will then lock up
with
FAIL
displayed and kiln off in the event of power failure.
Other
Featur
es
ST312 User Handbook
Page 3
Quick S
tart Guide
Quick Start Guide
Switch on & wait for kiln temperature display
To run a firing program set up previously press the
START/STOP key
To stop the firing at any time press the START/
STOP key again
To review firing data press the
¨
key to enter the
programming menu
To change firing data press the
©
&
ª
keys to
change the displayed value
Use the
¨
key again as necessary to index to the
next firing value to be reviewed or changed
To exit the programming menu either wait 10 sec-
onds or press the START/STOP key to start firing
If the keyboard is locked then press the
©
&
ª
keys
together & hold down for 5 seconds to unlock
