Operation of Controller
880 Operation Manual Issue 7 EMC INDUSTRIAL GROUP LTD Page 8 of 25
Use UP or DOWN keys to set the required ramp rate, or hold down the UP key un-
til display shows . Press DOWN once to set it to or press it twice to
select 3200, which is the largest ramp number that can be set.
Alternatively, pressing the UP and DOWN keys together will cycle between a ramp
rate of 100°C/h, the setting and the setting .
Set Temperature 1
Press and release MENU key until the small display flashes .
Large display shows either the maximum temperature kiln will climb to during stage
1 or show . means bypass stage 1 completely.
Use UP or DOWN keys to set the required temperature value, which must be be-
tween the setting limits, see Hold Temperature Setting Limits, page 23, or hold
down the UP key until display shows .
Alternatively, pressing the UP and DOWN keys together will cycle between a value
of half the Maximum Hold Temperature, see Hold Temperature Setting Limits,
page 23, and the setting .
Set Hold 1
Press and release MENU key until the small display flashes .
Large display shows length of time kiln temperature will be held for at stage 1 tem-
perature setting or show the word . means the kiln will be held at
stage 1 temperature setting until the START/STOP key is pressed to stop the fir-
ing.
Use UP or DOWN keys to set required hold period, up to a maximum of 54 hours,
or set to by holding down the UP key until display shows .
Alternatively, pressing the UP and DOWN keys together will cycle between a hold
time of 0.00 and the setting .
Set Stage 2 Through To Stage 6
Entering setting values for Stage 2 through to stage 6 is the same as described for
stage 1.
Set Vent Close Set Point
The Vent Close Set Point value is only shown in the display if relay option card OP-
1 is fitted.
Press and release MENU key until the small display shows .
The large display shows either the close vent set point or and the VENT light
will be flashing.
If the close vent set point is exceeded by the kiln temperature the Vent light will
turn off and the Vent will shut.
The vent limits do not operate when the setting is set to .
Use UP or DOWN keys to set the required close vent temperature value, which
must be between the setting limits, see Hold Temperature Setting Limits, page
23, or set to by holding down the UP key until display shows .
Alternatively, pressing the UP and DOWN keys together will cycle between half the
Maximum Hold Temperature, see Hold Temperature Setting Limits, page 23,
and the setting .
Press EXIT key to return to normal operation.
Note At power on, the Vent is always opened. When the RUN key is
pressed (or firing is Auto Continued after a power failure) the vent re-
mains open, unless the current kiln temperature exceeds the tem-
perature.
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