ABB ControlIT 53MC5000 Instruction Manual page 183

Table 5-14. System Module
Title
Enable Tuning Parameter Limits
0 - no limits checked, 1 - limits below apply
C385 lowest % PB
Parameter C386 highest % PB
Modify C387 lowest T
C388 highest T
C389 lowest T
C390 highest T
Automatic Automatic Tuning Parameter
Tuning 1 - upon successful completion of the EASY-TUNE sequence,
Parameter new tuning parameters will be entered.
Entry 0 - new tuning parameters will not be entered but available for review.
This parameter presents the state of the EZ-TUNE procedure or, when a failure occurs, the error
condition code as shown below:
EASY-TUNE Normal Successful Status Display
B387 =
1
Status
2
3
4
5
0
Definition
(minutes)
R
(minutes)
R
(minutes)
D
(minutes)
D
Description
Settling time & finding initial steady-state values
Initial step disturbance to the process
Preliminary process characterization (Disturbance is removed)
Finding second steady-state values (Disturbance is re-applied)
Finding process characteristics (Disturbance is removed)
EASY-TUNE has successfully completed
Atom Data- De-
point fault
PLIM L520 1
APLD L522 0
ESTAT B387 0