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OM-222 166 Page 35
. The Cooler button is inactive when no cooler is detected and no liquid-cooled output cable is attached.
6-8. Real-Time Operation
Each time the unit is first turned On it initiates a system check routine that includes verification of communication between circuit boards and checking
for output isolation faults. During this check routine, all displays and LED’s illuminate and the following screen appears on the display:
ProHeat
Firmware Revision X.XX
Copyright (c) 2005
Miller Electric Mfg. Co.
Power Up Message Screen
X.XX indicates the firmware revision number installed in the unit.
If an error is detected during the check routine, the system fault LED illuminates and an error message screen appears on the display (see Section 9-5).
When the check routine is completed successfully, the operator interface defaults to the following:
S The Stop button indicator LED illuminates to indicate no heating cycle is in process.
S The temperature displays indicate actual temperature from the TC’s (thermocouples). If no thermocouples
are connected, the displays indicate OPEN.
S Control LED’s illuminate to indicate the number of control TC’s in the last program.
S The appropriate degree units (°F or °C) light illuminates.
S The display defaults to the Run Status screen from the last program used and the Run Status
button indicator LED illuminates.
S If no fault or limit conditions are present, system status lights are not illuminated.
Once set up is complete for the desired program procedure (see Section 6-3), pressing the Run button will initiate a heating cycle. When a
program run is initiated, the Run button yellow indicator LED illuminates and the Heat On blue indicator LED illuminates to indicate output is
present to the coil. The cycle will continue until the end of the program is reached or the Stop button is pressed.
The system has a hold function that will maintain a temperature or hold the soak time of any active temperature controlled program. Pressing the Hold
button will only activate the hold function while in the run mode. If the system is not in the run mode, the following screen will appear on the
display:
Must be running to enter Hold mode
Hold Message Screen