4-1
4. Profile Programming
4.1 Overview
This section explains how to program and store a ramp-and-soak profile.
• 4.2 and 4.3 define and explain profiles, steps, and step type.
• 4.4 explains how to name and program a ramping profile. The ¼ DIN
Ramping Controller presents the programmer with a sequence of
questions that prompt for steps and step properties.
• 4.5 explains how to edit an existing profile.
4.2 What is a Ramping Profile?
A ramp is a programmed change from one set point to another. A soak
maintains the set point over a period of time.
A profile is a set of instructions programmed as a sequence of steps. The
controller handles the profile steps automatically, in sequence. As many as 40
different profiles, with a total of 256 steps, can be stored in the non-volatile
memory.
The 256 steps are grouped by profile. One profile could have 256 steps; or 39
profiles could have 6 steps and one could have 22, etc. The maximum number of
steps is 256, and the maximum number of profiles is 40.
4.3 Step Types – Building Blocks of Profiles
Six types of steps are available with the ¼ DIN Ramping Controller, however
only three of the six are appropriate for use with the Model 1200 Table-Top
Furnace System. These are Ramp Time, Soak and End, which are the building
blocks for all Model 1200 profiles. Auto Start, Ramp Rate, and Jump are not
used and hence not addressed in the text.
Ramp Time
Ramp Time changes the set point to a new value in a chosen period of time.
Define the Ramp Time step by choosing;
1. Wait for an event or process value, not used. (The Model 1200 is not
configured for this behavior.)
2. Event outputs to turn on or off. (GAS1, GAS2, Vacuum, Exhaust, and
Heat are assigned to event outputs.)
3. Time in hours, minutes and seconds.
4. Temperature in degrees Celsius.
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