v 1.4 — September 2015 Altanium Neo2
46 Changing the Abort Band
7.3.3 Changing the Abort Band
The number of degrees over or under setpoint must be specified to initial an alarm and the
system to be stopped. The default setting is 28 °C (50 °F).
NOTE:Neo2 must be in Advanced mode to change this setting. Refer to Section 4.2.1.
To change the abort band:
1. On the Quick Set screen, touch the zone to adjust.
To select more than one zone, touch the additional zones and they will be selected.
2. Using the Parameter Scroll buttons, scroll to ABORT.
3. Touch ABORT and a numerical key window appears.
4. Enter the new value, and then touch Enter.
The operator can also add or subtract from the current value by entering the number
and touching the + or - button. For example, to add 4 degrees to the selected zones
Abort Band, touch the 4 button followed by the + button.
Abort Example: Setpoint = 350 °F, ABORT = 50 °F
At 401 °F or 299 °F degrees the alarm will be initiated and the system will be Stopped. If the
normal setpoint is changed to 400 °F, the alarm will be initiated and the system will be
Stopped at 451 °F or 349 °F degrees. The setting is always represented as an amount above
and below the present setpoint.
7.3.4 Zone Slave
Some of the most vulnerable components in the mold are the thermocouples. If a
thermocouple fails, Neo2 will initiate an alarm and display an error on the Alarm Status
screen for the affected zone. At this point there are three choices:
1. Stop molding, remove the mold and repair the fault. This may not be desirable or even
possible.
2. Switch the zone to Manual control mode and continue processing. This has limitations
as Manual mode is not able to compensate for changes in the process that affect the
heater's power requirements, for example, shear heat.
3. Slave the faulty zone to another. Due to the symmetry in the design of hot runner molds,
frequently there are other zones that have very similar thermal characteristics as the
faulty zone. Neo2 can apply the power output from a fully functioning zone to the zone
with the defective thermocouple. This means that any processing changes that affect
the power requirements of the heaters are automatically applied to the defective zone.
It is similar to repairing the defective thermocouple without ever opening the mold.
7.3.4.1 Automatic Slave Function
If a thermocouple malfunctions during operation of the mold, the Neo2 Auto-Slave function
will take over. Neo2 constantly monitors the heaters in the mold and stores comparative
data. This data is used to select an almost identical Master/Slave relationship for every zone
in the mold. If a thermocouple fails, Neo2 will initiate an alarm and display the error on the
Home screen for the offending zone.
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