Studio5000-PID-Temperature-Control

Industrial PID temperature control simulation in Studio 5000 using PIDE, autotune, and manual override.

This project demonstrates a simulated temperature control loop using the Studio 5000 PIDE instruction.

Features:

• PIDE closed-loop temperature control
• Auto / Manual mode switching
• Manual output override
• Setpoint ramping
• Output limiting (0–100%)
• Simulated thermal process model
• Autotune implementation
• Before / After response comparison

Project Structure:

Main_LAD

• Start/Stop logic
• Auto/Manual mode control
• Setpoint ramping
• Manual CV handling
• Routine calls

PIDE_FBD

• PIDE controller block
• PV input
• CV output
• Gain tuning

PlantSim_ST

• First order thermal model
• Heater gain simulation
• Time constant response
• Temperature clamping

Signal Flow:

Setpoint → PIDE → Controller Output → Plant Model → PV → PIDE

Autotune Results:

Before tuning:

• Slow rise time
• Oscillation
• Poor settling

After tuning:

• Faster response
• Reduced overshoot
• Stable settling
• Smooth controller output

Files:

PID_Temperature_Loop.L5X — Studio 5000 project export

Skills Demonstrated:

Studio 5000 Logix Designer
PIDE instruction configuration
Closed-loop process control
PID tuning and autotune
Function block programming
Structured text simulation
Industrial controls architecture

                 ┌────────────────────────────┐
                 │          Main_LAD          │
                 │----------------------------│
                 │ • Start / Stop Logic       │
                 │ • Auto / Manual Mode       │
                 │ • Setpoint Ramping         │
                 │ • Manual Output Override   │
                 │ • Writes SPProg            │
                 │ • Writes CVProg            │
                 │ • Calls Subroutines        │
                 └─────────────┬──────────────┘
                               │
                               │ writes members
                               ▼
                 ┌────────────────────────────┐
                 │          PIDE_FBD          │
                 │----------------------------│

TIC_PV ───────────► │ PV CV │ ───────► TIC_CV │ TIC_101_PIDE │ │ │ │ • PID Control │ │ • Auto / Manual Switching │ │ • Output Limiting │ │ • Autotune │ └─────────────┬──────────────┘ │ │ controller output ▼ ┌────────────────────────────┐ │ PlantSim_ST │ │----------------------------│ │ • Thermal Model │ │ • Heater Gain │ │ • Time Constant │ │ • PV Clamp │ │ │ │ Updates TIC_PV │ └─────────────┬──────────────┘ │ │ feedback └─────────────── back to PIDE PV

Setpoint (SP) │ ▼ SP Ramp Logic │ ▼ PIDE Controller │ ▼ Control Output (CV) │ ▼ Thermal Plant Simulation │ ▼ Process Variable (PV) │ └────────────── feedback to controller