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Integral term (ti) settings, Derivative term (td) settings – Watlow ANASOFT User Manual

Page 74

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64 ANASOFT User’s Guide

Appendix A: PID

Integral Term (TI) Settings

This table shows TI settings vs. Reset settings.

As a general rule, use 60, 120, 180, or 240 as a starting value for the TI.

Derivative Term (TD) Settings

This table shows Derivative term (TD) versus Rate Minutes (RM);
Rate=TD/60.

As a general rule, set the TD to 15% of TI as a starting value.

TI

(secs./repeat)

Reset

(repeats/min)

TI

(secs./repeat0

Reset

(repeats/min)

30

2.0

210

0.28

45

1.3

240

.25

60

1.0

270

.22

90

.66

300

.20

120

.50

400

.15

150

.40

500

.12

180

.33

600

.10

TD

(secs./repeat)

Rate

(repeats/min)

TD

(secs./repeat)

Rate

(repeats/min)

5

.08

35

.58

10

.16

40

.66

15

.25

45

.75

20

.33

50

.83

25

.41

55

.91

30

.50

60

1.0