47
Using Heater Burnout Alarm (HBA) Section 3-10
Setting heater burnout detection
5. Press the key for at least one second to move from the “advanced
function setting level” to the “initial setting level” and then to the “operation
level”.
6. Press the key for less than one second to move from the “operation
level” to the “adjustment level”.
7. Select the “heater current value monitor” parameter by pressing the
key. Check the current value. Next, set the “heater burnout detection” pa-
rameter.
8. Select the “heater burnout detection” parameter by pressing the key.
Set the current value as a reference value. Set this set value so that there
is a large difference between the current flowing to the heater lead when
heater operation is normal and the current flowing when a heater burnout
occurs.
9. For example, set “2.5”. To return to the “operation level”, press the key
for less than one second.
PV/SP
Operation level
Heater burnout
detection
Adjustment level
AT execute/
cancel
Heater current
value monitor
25
100
C
at
off
ct
0.0
hb
0.0
hb
2.5
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