Miller Electric TS, IH manual Programming The 2408 Controller, Program List Terms And Definitions

6-3-2. Programming The 2408 Controller

Identify the “code” requirements for the heat treat. For Preheat program refer to Figure 6-1.

For Postweld stress relief program refer to Figure 6-2.

For a complex stress relief program (multiple temperature rise and cool rates) refer to Figure 6-3. Use worksheet in Figure 6-4to help prepare either a pre- or post-heat temperature profile.

SEG.n

Table 6-3. Program List Terms And Definitions

Segment number

Segment Type Definitions

Step

(StEP)

Dwell

(dwEl)

Ramp Time (rmP.t) Ramp Rate (rmP.r)

End

(End)

The setpoint steps instantaneously from its current value to a new value.

The setpoint remains constant for a specified period.

Dwell units (dwL.U) are in hours.

The setpoint ramps linearly, from its current value to a new value, either at a set rate (called ramp-rate programming), or in a set time (called time-to-target programming). You must specify the ramp rate, or the ramp time, and the target setpoint, when creating or modifying a program.

Ramp units (rmP.U) are in hours.

A program either ends in this segment or repeats. You specify which is the case when you create or modify a program (see the final topic in this chapter). When a program ends, the programmer is put into either a continuous Dwell state with all outputs staying unchanged, or the Reset state.

The following parameters are available depending on the tYPE selected

	StEP	dwEl	rmP.t	rmP.r	End
tGt	√		√	√		Target setpoint for a “rmP“ or “StEP” segment.
rAtE				√		Ramp rate for a “rmP.r” segment.
dur		√	√			Dwell time for a “dwEl” segment.
End.t					√	End of prog − dwEl, rSEt, S OP.

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