Plc and hmi based stenter machine poster
- 1. ABSTRACT : The aim of the project is to operate stenter machine (machine of textile industry having master and slave motor assembly).The basic principle of this project is speed synchronization of induction motors. We are using one master and one slave motor. The speed synchronization is done by VFD. For automatic control PLC and HMI are used. We will be programming the PLc in such a way that we can remotely synchronized the motors. As we are using individual drive it will increase capital cost but it will give better and smooth operation and reduces maintenance cost. By utilizing the plc in textile industry in such a way that whenever a fault occurs in machine the material will not being damage and the HMI will show us the message regarding the fault. The worker will clear the fault and it will save the machine as well as the material. Component used : 2- Three phase induction motor(0.5hp,1500rpm) , 2-VFD(schneider- 1hp), PLC(delta-DVP10SX), MCBs , HMI(AS38BSTD 8 gray), relay card , RS 232 & RS 485 cable , pvc channel , board. START SELEC T MODE MANUAL MODE AUTO MODE ENTER MASTER RPM ENTER MASTER RPM ENTER SLAVE RPM ENTER SLAVE RPM COUNTCOUNTCOUNTCOUNT ENTER AUTO MASTER RPM SLAVE MOTOR SYNCHRONIZED END Flowchart: Hardware model : Conclusion : From this project we can quickly synchronized master and slave motor. It becomes very helpful in industry as we can operate it remotely by PLC and HMI. This will also reduce time ,money ,human effort. It can also be used in plastic industry, product counting, coal crushing, elevators, oil refineries, drying machines. VO I0 V1 I1 VO IO V1 I1 COMMON S/S X0 X1 X2 X3 CO Y0 Y1 Speed ref. from VFD1 Speed ref. from VFD2 -v +v(start) +v(stop) VFD Error signal1 VFD Error signal2 -v Relay 1 Relay 2 Start VFD1 Start VFD2 plc connections : Execution of project : Switch on the main three phase supply. SMPS provide supply to PLC and also VFDs, MOTORs gets started. From HMI we select operation mode and provides rpm of master and slave motor to PLC. HMI is directly link the entered rpm to PLC address. Count are generated according to rpm in plc. If the mode is auto then we have to enter only master rpm. Slave count in auto mode are generated according to master count. Thus synchronization is done. HMI screen :