Stafford Instruments ST312A, Руководство пользователя

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Page ST312A 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 ST312A - see installation handbook.
Keyboard Lock Facility
1 . 200
°C
°C/hr
hr.min
The keys on the ST312A can be locked so that pressing them has no effect.
This is an anti-tamper feature used to ensure that the operation of the
ST312A or the program data cannot be altered by un-authorised people.
The ST312A 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 dis-
play is lit then the ST312A is locked.
Press and hold in both the
© & ª keys
for 5 seconds to unlock the ST312A.
1200
°C
°C/hr
hr.min
If the left-hand decimal point in the display
is not lit then the ST312A is not locked.
Press and hold in both the
© & ª keys for
5 seconds to lock the ST312A.
Power Failure Recovery
If power fails during firing then the ST312A recovers as follows:-
For power failure during start delay the ST312A commences firing immedi-
ately when power returns. For power failure during ramp 1 or ramp 2 the
ST312A goes back into the ramp it was previously executing. For power
failure during soaking the ST312A ramps back up to soak temperature at
ramp rate 2 then applies the remaining soak period. This recovery scheme
can be disabled if required (see installation handbook) - the ST312A will
then lock up with
FAIL displayed and kiln off in the event of power failure.
Other
Featur
es
ST312A 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