BAKE
ENTER
1,6
ENTER
5,6
ENTER
0,0,0,1
ENTER
3,2
ENTER
BAKE
BAKE
The BAKE setpoint operates like
SPI and SP2
(Subsection 3.9) except
that a time (parameter 4) and activate control have been added. If
parameter 4 is 0, the timer runs continuously until the end of the cycle,
and if 1, it runs while the heaters are on. The timer is adjustable from
1 to 99 hours. The following example programs the heaters to tum on
at 1 x 10-
6
,
tum off at 5 x 10-
6
,
sets the time run while the heaters are
on, and sets the timer for 32 hours:
Puts the DIGITEL in bakeout control mode. Displays
BAKE.
Displays the first parameter.
Sets parameter 1 (heaters tum on) to 1 x 10-
6
.
See Subsection 3.9.1.
Enters the value and displays parameter 2 (when the heaters tum off).
This is for hysteresis and is optional (Subsection 3.9.2).
Sets the value to 5 x 10-
6
.
Enters the value and displays the control number.
Sets the timer to run while heater is on. The three zeros configure the
setpoint to pressure, no password, HV interlock enabled.
Displays the value of the timer followed by Hr.
Sets the timer.
Enters the time value. If the setpoint had been password protected,
you are prompted for the password at this point.
The bakeout setpoint has been configured, but the heaters do not turn
on until the sequence is started. To do this, press:
Displays
BAKE.
Time is reset to its programmed value, and the heaters turn on if
pressure is below the setpoint.
The lamp immediately to the right of the
BAKE
key lights when the
heaters are commanded on.
To determine the number of hours remaining in the cycle press
ENTER
in the function mode. The display shows XX Hr (XX is the
number of hours remaining) for two seconds and then resumes normal
operation. The bakeout setpoint may be deactivated by accessing any
of the three setpoints. For example, to deactivate the bakeout setpoint,
press:
BAKE ENTER ENTER ENTER ENTER ENTER
Operation
3-19
