OptiPlant AI
3 DCS
Portal:Process Intelligence/Live Process View
E-Coat Bath 01 β€” pH

ns=2;s=PA.PaintShop.ECoat01.PV_pH

PV

5.793

pH

SP

5.800

OP

48%

AUTOGOODCLEAR
E-Coat Bath 01 β€” Conductivity

ns=2;s=PA.PaintShop.ECoat01.PV_Conductivity

PV

1,239

ΞΌS/cm

SP

1,250

OP

62%

AUTOGOODCLEAR
Cure Oven 01 β€” Zone 1 Temp

ns=2;s=PA.PaintShop.CureOven01.Zone1_PV

PV

162.2

Β°C

SP

165.0

OP

72%

AUTOGOODANOMALY

Subtle positive drift last 15 min

Cure Oven 01 β€” Zone 2 Temp

ns=2;s=PA.PaintShop.CureOven01.Zone2_PV

PV

177.8

Β°C

SP

175.0

OP

84%

AUTOGOODANOMALY

Over-SP, amber halo

Spray Booth 03 β€” Humidity

ns=2;s=PA.PaintShop.Booth03.PV_Humidity

PV

57.83

%RH

SP

62.00

OP

38%

CASCADEGOODCLEAR
Phosphate Line 01 β€” Bath Temp

ns=2;s=PA.PaintShop.Phosphate01.PV_BathTemp

PV

54.73

Β°C

SP

55.00

OP

51%

AUTOGOODCLEAR

Correlated Anomalies

Cure Oven Zone 1 positive drift correlates (ρ=0.78) with gas header pressure drop in last 18 m. Suggested root cause: burner modulation lag.

E-Coat bath pH within 1Οƒ of expected; no anomaly.

Loop Health Summary

AI loop tuning score: 75/100. 1 loop flagged for PID retuning.

pH

88

Conductivity

85

Zone 1 Temp

62

Zone 2 Temp

45

Humidity

78

Bath Temp

91

Operating Mode Fingerprint β€” Last 48 Γ— 30-min Windows

Drag vertically on any axis to brush-filter. Each line = one operating window.

ECoat01 pH6.25.4ECoat01 Temp3628ECoat01 BathSolids2820CureOven Z1172160CureOven Z2184170CureOven Z3178165Booth03 Humidity7245LineSpeed168Throughput6040AmbientRH8030
Mode A
22w

Steady high-throughput

Defect
2.4%
kWh/u
612
Yield
97.2%
Mode B
8w

Ramp-up / start-of-shift

Defect
3.1%
kWh/u
634
Yield
96.1%
Mode C
12w

Product-mix transition

Defect
2.8%
kWh/u
621
Yield
96.8%
Mode D
6w

Off-nominal / oven hot band

Defect
4.8%
kWh/u
648
Yield
94.1%
6 off-nominal windows identified in last 24 h, all within "Cure Oven hot band" cluster. Setpoint Advisor recommendations for Z2 address this mode specifically.

Sequence Detector β€” Last 12 h

03:12
04:30
05:15
06:02
06:18
06:50
07:20
07:44
07:52
08:00
08:30
09:05
09:50
10:22
10:38
11:10
11:30
12:00
12:44
12:52
13:00
13:30
14:15
14:40
SP changeAI appliedAlarmRule violationQuality

Detected recurring sequences:

Pattern 2 is preventable by auto-sequencing a small Z2 SP reduction when gas header pressure falls below 4.1 bar. One-click enable available via Autopilot policy.

Signal Co-occurrence Chord

Co-anomaly frequency between tag groups over 30 days

ECoat pHECoat Cond.BathSolidsCureOven Z1CureOven Z2GasFlowBooth Hum.LineSpeedAmbientRHPhosphate TECoat pH ↔ ECoat Cond.: 42 co-occurrences (odds ratio 4.2)ECoat pH ↔ BathSolids: 38 co-occurrences (odds ratio 3.8)ECoat pH ↔ CureOven Z2: 8 co-occurrences (odds ratio 0.8)ECoat pH ↔ Booth Hum.: 6 co-occurrences (odds ratio 0.6)ECoat pH ↔ AmbientRH: 7 co-occurrences (odds ratio 0.7)ECoat pH ↔ Phosphate T: 12 co-occurrences (odds ratio 1.2)ECoat Cond. ↔ BathSolids: 35 co-occurrences (odds ratio 3.5)ECoat Cond. ↔ CureOven Z2: 6 co-occurrences (odds ratio 0.6)ECoat Cond. ↔ Phosphate T: 8 co-occurrences (odds ratio 0.8)BathSolids ↔ Phosphate T: 6 co-occurrences (odds ratio 0.6)CureOven Z1 ↔ CureOven Z2: 28 co-occurrences (odds ratio 2.8)CureOven Z1 ↔ GasFlow: 22 co-occurrences (odds ratio 2.2)CureOven Z1 ↔ LineSpeed: 6 co-occurrences (odds ratio 0.6)CureOven Z2 ↔ GasFlow: 44 co-occurrences (odds ratio 4.4)CureOven Z2 ↔ LineSpeed: 7 co-occurrences (odds ratio 0.7)Booth Hum. ↔ AmbientRH: 32 co-occurrences (odds ratio 3.2)
Co-occurrence points to two fault subsystems: (a) oven-gas cluster and (b) e-coat chemistry cluster. Targeted isolation recommended.