Operation
4-24
P/N 7135268B
E 2008 Nordson Corporation
PURBlue EC
Seven-day Clock
Use the Seven-day clock key to turn the clock feature on and off. When the
clock is on, the temperature of each heated component is automatically
regulated by user-defined schedules.
Three schedules are available to accommodate daily shift work. They are
used to specify when the heaters should turn on and off or when the melter
should enter and exit the standby mode. Refer to Appendix B, Seven-day
Clock for information on creating programs.
Control option 0 of the operating parameters 71 to 77 is used to keep the
melter in the last state specified by the clock (e.g. Heaters off on
non-working days).
When the heaters switch on as dictated by the schedule, they are regulated
to their assigned setpoint temperatures. When the clock activates the
standby mode, the setpoint temperatures are all temporarily reduced by a
preset standby delta.
If the heaters are manually turned off during the time that a clock schedule
calls for the heaters to be on, the heaters will not turn back on until the next
clock schedule calls for them to be on.
If the melter is switched off while the seven-day clock is on, the clock will
automatically turn back on the next time the melter is switched on.
If F4 appears in the right display when the Seven-day clock key is pressed,
the internal clock (realtime clock) has failed. Refer to section
Troubleshooting.
Bypassing the Seven-day Clock
You can override the seven-day clock at any time. If the clock has turned
the heaters off, pressing the Heater key will turn the heaters back on.
If the clock has placed the melter in standby mode, pressing the Standby
key will return the heated components to their assigned setpoint
temperatures.
Setup
The melter enters or exits Setup mode when the Setup key is pressed. The
automatic scan cycle stops in Setup mode. The left and right displays are
used to select, read or edit operating parameters.
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