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Example profile, Circle file number: 1 2 3 4 master step chart – Watlow Series SD PID Profiling Controller User Manual

Page 56

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Wa t l o w S e r i e s S D

5 4

C h a p t e r 1 0 P r o f i l i n g

Example profile

Gwen, of Smith Manufacturing needs to perform a burn-in test of their product in an environmental chamber. The
test should take the product through the following sequence:

1. Heat from room temperature to a temperature of 150°F over a 1-hour period.
2. Hold the temperature at 150°F for 2 hours.
3. Cool the temperature to 32°F as quickly as possible.
4. Once the temperature reaches 32°F, hold that temperature for 2 hours.
5. Stop controlling the temperature and allow it to return to room temperature naturally.

Use the master step chart to map out the profile.

Circle File Number: 1 2 3 4

Master Step Chart

Step 1

___ Stpt (Ptyp=ti)

Tg.SP

1 5 0

Hour

1

Min.

0

Sec.

0

Ent1: On Off

Ent2: On Off

Ent3: On Off

___ Stpt (Ptyp=rate)

Tg.SP

Rate

Ent1: On Off

Ent2: On Off

Ent3: On Off

___ Soak

Hour

Min.

Sec.

Ent1: On Off

Ent2: On Off

Ent3: On Off

WF.P: Yes No

W.Pr

___ JL

JF

JS

JC

___ LFil

LF

___ End

End: Off Hold

Step 2

___ Stpt (Ptyp=ti)

Tg.SP

Hour

Min

Sec.

Ent1: On Off.

Ent2: On Off

Ent3: On Off

___ Stpt (Ptyp=rate)

Tg.SP

Rate

Ent1: On Off

Ent2: On Off

Ent3: On Off

___ Soak

Hour

2

Min.

0

Sec.

0

Ent1: On Off

Ent2: On Off

Ent3: On Off

WF.P: Yes No

W.Pr

___ JL

JF

JS

JC

___ LFil

LF

___ End

End: Off Hold

Step 3

___ Stpt (Ptyp=ti)

Tg.SP

3 2

Hour

0

Min.

0

Sec.

0

Ent1: On Off

Ent2: On Off

Ent3: On Off

___ Stpt (Ptyp=rate)

Tg.SP

Rate

Ent1: On Off

Ent2: On Off

Ent3: On Off

___ Soak

Hour

Min.

Sec.

Ent1: On Off

Ent2: On Off

Ent3: On Off

WF.P: Yes No

W.Pr

___ JL

JF

JS

JC

___ LFil

LF

___ End

End: Off Hold

Step 4

___ Stpt (Ptyp=ti)

Tg.SP

Hour

Min

Sec

Ent1: On Off.

Ent2: On Off

Ent3: On Off

___ Stpt (Ptyp=rate)

Tg.SP

Rate

Ent1: On Off

Ent2: On Off

Ent3: On Off

___ Soak

Hour

2

Min.

0

Sec.

0

Ent1: On Off

Ent2: On Off

Ent3: On Off

WF.P: Yes No

W.Pr

3 2

___ JL

JF

JS

JC

___ LFil

LF

___ End

End: Off Hold

Step 5

___ Stpt (Ptyp=ti)

Tg.SP

Hour

Min.

Sec.

Ent1: On Off

Ent2: On Off

Ent3: On Off

___ Stpt (Ptyp=rate)

Tg.SP

Rate

Ent1: On Off

Ent2: On Off

Ent3: On Off

___ Soak

Hour

Min.

Sec.

Ent1: On Off

Ent2: On Off

Ent3: On Off

WF.P: Yes No

W.Pr

___ JL

JF

JS

JC

___ LFil

LF

___ End

End: Off Hold

S t e p 1

[~~~1] [~~~1]

[Stpt]

[~150] [~~~1]

[~~~0] [~~~0]

[File] [Step]

[Styp]

[Tg;SP] [hour]

[Min] [~seC]

S t e p 2

[~~~1] [~~~2]

[Soah]

[~~~2] [~~~0]

[~~~0] [~~no]

[File] [Step]

[Styp]

[hour] [Min]

[~SeC] [WF;P]

S t e p 3

[~~~1] [~~~3]

[Stpt]

[~~32] [~~~0]

[~~~0] [~~~0]

[File] [Step]

[Styp]

[Tg;SP] [hour]

[min] [~SeC]

S t e p 4

[~~~1] [~~~4]

[Soah]

[~~~2] [~~~0]

[~~~0] [~Yes] [~~32]

File] [Step]

[Styp]

[hour] [Min]

[~SeC] [WF;p] [WPr]

S t e p 5

[~~~1] [~~~5]

[~End]

[~Off]

[File] [Step]

[Styp]

[~End]

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