EMC 880 - Stage Start and During Firing Operations

Operation of Controller
880 Operation Manual Issue 7 EMC INDUSTRIAL GROUP LTD Page 10 of 25
The large display shows remaining time to go before firing will commence.
The delay start time can be altered while timing out.
When the time gets to  the small display will show the first ramp or tempera-
ture stage number, the heat light will turn on, the RUN STOP light will come on
steady and the firing will start.
To cancel a delayed start when in progress, press the RUN STOP key.
NOTE If power fails during this delay period and the Auto Continue feature
has been enabled, the countdown to the start of firing will continue
when power is restored, but the start time will be extended by the time
power was off.
Stage Start
The Stage Start method allows a firing to be started instantly from any point within
the program.
Use the MENU key to step through the program until the small display shows the
desired starting point.
The MENU light will be on and the small display will be fast flashing.
Press the RUN STOP key.
The MENU light will be on and the START/STOP light will fast flash for five sec-
onds.
Press the RUN STOP key again during the five-second time out. Two long beeps
will sound, the heat light will turn on, and the small display and the RUN STOP light
will come on steady indicating the firing has started.
Warning If the key is not pressed, during this time out, the firing will start from
the beginning of the program.
Check the small display is showing the correct starting point in the program.
During a Firing
Once the firing is started, the kiln controller generates a temperature profile calcu-
lated from the ramp, temperature and hold settings of each stage.
Any of these settings can be adjusted during the firing to change the temperature
profile.
As the program advances, the Control Temperature follows the temperature profile
exactly.
The Heat output is turned on and off to make the kiln temperature follow the Con-
trol Temperature.
If the kiln temperature is less than the Control Temperature, heating is switched on,
if the kiln temperature is higher heating is switched off.
To see the current Control Temperature press the CONTROL TEMP key at any
time during a firing.
To view the remainder of the total firing time press and hold the TIME TO GO key
for longer than 3 seconds.
When the small display shows … the kiln temperature is ramping up to the set
temperature and the time to finish this ramp can be viewed by pressing the TIME
TO GO key.
At lower temperatures, the kiln temperature will follow the Control Temperature
very closely, but at higher temperatures the kiln temperature may fall behind the
Control Temperature, especially if the ramp rate is too high or the heating elements
are getting old.
If the Control Temperature reaches the set temperature and the kiln temperature is
lagging behind, the mnemonic … will show in the small display indicating the pro-
gram is paused while waiting for the kiln temperature to catch up.