Micromod Micro-DCI: 53SL5100A Single Loop Controller - Manual (Page 112)

Single Loop Process Controller Instruction Manual
104 Easy-Tune
11.3 EASY-TUNE Parameters
All pertinent input parameters to the EASY-TUNE algorithm are obtained from Controller Module Mode 0,
which must first be configured. The parameters that must be configured before initiating the EASY-TUNE
sequence (B008 = 1) are items 1, 3, 5 through 10, in
Table 11-1 .
Table 11-1. EASY-TUNE Parameters
Item Datapoints Description
Default
Value
1 L520
C385
C386
C387
C388
C389
C390
Enable Tuning Parameter Limits
0 - no limits checked, 1 - limits below apply
lowest % PB
highest % PB
lowest TR (minutes)
highest TR (minutes)
lowest TD (minutes)
highest TD (minutes) 1
2
500
0
30
0
10
2 L521 Abort EASY-TUNE Switch
0 - no effect, 1 - EASY-TUNE is aborted 0
3 L522 Automatic Tuning Parameter
1 - upon successful completion of the EASY-TUNE sequence,
new tuning parameters will be entered.
0 - new tuning parameters will not be entered but available for review. 0
4 B008 Enable EASY-TUNE 0
5 B385 Control Module Selector (leave at 0) 0
6 B386 PID Control Mode
1 - P, 2 - PI, 3 - PID, 4 - PD, 5 - I 0
7 C378 Excursion Limit for Preliminary Step Disturbance (%)
The step size chosen for C381 will cause a PV change which depends
on the process gain as well as C381 itself. C378 should be set to
approximately 1/4 of that expected change. (See C381 below.) 2
8
C379 Limiting Settling Time (seconds)
Set to maximum time allowed during B387 = 1 or 2. (See
Table 11-2
and Figure 11-1 .)
0
9
C380 Maximum Allowable Excursion of PV in EASY-TUNE (%)
Setting C380 will prevent excessive change in PV.
0
10 C381 Step Size Change in Controller Output (± %)
Set large enough to cause significant but allowable PV changes.
(See C378 above.) 0