Introduction: Arduino-tomation Part 5: LE TUNNEL DE CHAUFFE
Two month ago I decided to retrofit a small forgotten system stored in the warhouse of the place I work in. This system was made to heat and warm electronic devices or whatever put on special high temperature resist conveyor belt.
So I created some arduino clone boards :
-in oder to measure various temperature with thermo-couple sensors
-and to control the heat of resistors with AC dimmers
-and to control the sens of the DC motor
The main program is embedded in an industrial PLC: the famous WAGO 750-880 with additionnal I/O card. It's still very expensive (used: 250 euros, new: xxxx!! euros).
Step 1: Operating Part Description
I used some arcade push buttons to make this system eyes catchy and I bought a touch screen COOLMAY HMI (150 euros) to supervise the system in MODBUS TCP.
Step 2: Electrical Schematics
You will find here how it's wired: the PLC, the various electronic boards, the buttons and the emergency circuit check with a security module PILZ.
I supply too the programs of the PLC and the HMI.
Before using the PLC you need to install the free CODESYS software in two times:
-1 install the CODESYS V2.3 V23962
-2 the stand alone soft given by wago website: WAGO_SW0759-0333_V20200326_Codesys_S
Step 3: Electronics Schematics and Programs of the Boards
You will find here:
-the measurement board with 3 MAX6675
-the 3 dimmer boards: 0/10V DC to 0/230V AC
-the DC MOTOR controller
-the various arduino sketches:
-for the 3 dimmers: with SM lib and devided in 3 arduino, I tried to use only one atmega328 to control the whole dimmers but it was not enough because the boards needs 2 interruption lines for a dimmer may be I will try to use in the future only one atmega1284P.
-for the measurement board with the MAX6675 lib inside.
Step 4: Conclusion
I tried to lower the cost of this retrofit so I bought used devices. But I seems to be expensive. It was a very very interesting and rich project in skills and knowledges:
-codesys programing in SFC and LADDER (IEC 61-131)
-power electronics design
-electrical engeneering design
-automation,security and control design
-SCADA and HMI programming
-wiring and schematics design
I enjoyed myself and I hope you will apreciate this rewarding project.
Thanx to all valuable instructables allover the net. Happy instructable!!!