Thermo Scientific F30400, Installation And Operation Manual

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8
Single Ramp & Dwell
Program Overview
Thermo Scientific Large Tabletop Muffle
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3. Mode 3 (SF.ST) Starts automatically on power up. This is a soft-start function. If the PV is below
the Soft Start Threshold, then the power is limited to the Soft Start Limit until the threshold is
met.
Program Overview
• A program mode can be set by changing the “TM.CFG” variable (in the ‘Timer’ menu) to
“DWEL, DELY, or SF.ST.
The program must be stopped and the controller must be displaying the actual
temperature before beginning the Setup.
• A Ramp rate may be set by changing the “SP.RAT” variable (in the ‘SP’ menu) to a value. The
Ramp rate units are set with the “RAMPU” variable (in the ‘SP’ menu). The selections are Hour /
Min / Sec.
• The Dwell time can be set by changing the “DWELL” variable (in the ‘Timer’ menu) to the
desired value. Dwell time units are set with the “TM.RES” variable (in the ‘Timer’ menu). The
selections are Hour / Min.
• The program Status can be set by changing the “T.STAT” variable to “run”, “hold”, or “res.” This
variable will start, hold, or stop the program.”
• The Timer End Type can be set by changing the “END.T” to one of the four options:
? OFF - When the timer completes its dwell, the instrument will be put into Standby mode.
The output power will be set to 0%, and the standard home display will display PV and OFF
instead of setpoint.
? DWELL - When the timer completes, the controller will continue to control at setpoint.
? SP2 - When the timer completes the target setpoint will switch to setpoint 2. The setpoint 2
may be a lower or a higher temperature.
? Reset (rES) - The timer or program will reset on completion, reverting to the setpoint used
at the point it was started.
The above four options is to set what is expected of the unit to do once the program
is complete.
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For example, if it is desired for the controller to stop doing anything at all once the
timer is finished, set End.T to OFF. If it is desired to revert back to the ambient temp
setpoint at which the program started, set END.T to rES.