vi
SECTION 3
Level Controller Operation
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Level Variables and Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Level Controller Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
PID Controller Description and Details . . . . . . . . . . . . . . . . . . . . . . 3-3
AutoTuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Why Autotune? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Autotuner Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Alpha Adjustment for Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Adaptive Bias Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
When to Use Adaptive Bias Control . . . . . . . . . . . . . . . . . . . . . . 3-7
How ABC Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Local Operator Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Mode Shed Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
SECTION 4
Level Controller
Configuration
Configuration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Set Up the Level Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Place Controller into Out-of-Service (OOS) Mode . . . . . . . . . . . 4-2
Set Density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Set Level Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Set Controller Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Additional Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Configure the Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Set Range Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Set Control Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Set Control Action (Direct, Reverse) . . . . . . . . . . . . . . . . . . . . . . 4-5
Adaptive Bias Control (ABC) Settings . . . . . . . . . . . . . . . . . . . . 4-6
Set Power-Up Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Set Mode Shed Options (Failure Condition) . . . . . . . . . . . . . . . . 4-7
Set Manual Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Set Auto Output Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Choose Setpoint Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Additional Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Perform a Level Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Trim Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Level Trim Recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Tune the Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Set Target Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Set Control Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Autotuner (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Summary of Contents for 3095
Page 2: ......
Page 4: ......
Page 8: ...viii ...
Page 10: ...Rosemount Model 3095 Multivariable Level Controller 1 2 ...
Page 42: ...Rosemount Model 3095 Multivariable Level Controller 3 10 ...
Page 74: ...Rosemount Model 3095 Multivariable Level Controller 5 18 ...
Page 98: ...Rosemount Model 3095 Multivariable Level Controller B 4 ...
Page 101: ...C 3 Approval Drawings FIGURE 3 1 continued 3095 1025A02A ...
Page 102: ...Rosemount Model 3095 Multivariable Level Controller C 4 FIGURE 3 1 continued 3095 1025A03A ...
Page 103: ...C 5 Approval Drawings FIGURE 3 2 Index of I S F M for 3095 3095 1020A01A ...
Page 104: ...Rosemount Model 3095 Multivariable Level Controller C 6 FIGURE 3 2 continued 3095 1020A02A ...
Page 105: ...C 7 Approval Drawings FIGURE 3 2 continued 3095 1020A03A ...
Page 106: ...Rosemount Model 3095 Multivariable Level Controller C 8 FIGURE 3 2 continued 3095 1020A04A ...
Page 107: ...C 9 Approval Drawings FIGURE 3 2 continued 3095 1020A05A ...
Page 108: ...Rosemount Model 3095 Multivariable Level Controller C 10 FIGURE 3 2 continued 3095 1020A06A ...
Page 110: ...Rosemount Model 3095 Multivariable Level Controller C 12 FIGURE 3 3 continued 3095 1024A02A ...
Page 111: ...C 13 Approval Drawings FIGURE 3 3 continued 3095 1024A03A ...
Page 113: ...C 15 Approval Drawings FIGURE 3 4 continued 3095 1021A02A ...
Page 114: ...Rosemount Model 3095 Multivariable Level Controller C 16 FIGURE 3 4 continued 3095 1021A03A ...