L33354-XA28UEN-E1-S01, REV. A CLOSED-LOOP TUNING
Copyright © 2020 Amatrol, Inc.
S01-1
SKILL 1
TUNE A CONTROL LOOP USING THE AUTO-TUNE METHOD
PROCEDURE OVERVIEW
In this procedure, you will use the controller’s auto-tuning feature to determine the PID values. Then you will
operate the level control loop to observe the response. If the response is not ideal, you will manually tune the PID
values to improve the response.
1. Perform a lockout/tagout.
2. Perform the following substeps to set up the 990-PC1, as shown in figure 1-1.
NOTE
The appearance of the electrical outlet will differ based on the electrical power supplied at your location.
Figure 1-1.
990-PC1 Setup for Closed Loop Level Control
100 120
140
160
180
200
80
60
40
20
0
0
5
10
15
20
25
30
kPa
psi
100 120
140
160
180
200
80
60
40
20
0
0
5
10
15
20
25
30
kPa
psi
MANUAL FLOW CONTROL
VALVE FV100 (HFV) OPEN
MANUAL DRAIN VALVE
HV 100C (HV4) CLOSED
MANUAL
DRAIN VALVE
HV 300 (HV3)
CLOSED
CONNECT THE ANALOG
AND DIGITAL CABLES
HAND VALVE HV 100A (HV2)
AND HV 100B (HV1) OPEN
PRESSURE REGULATOR
SET TO 140 kPa (20 psi)
