Hi,
I'm working on a flow pack machine, it has got all the mechanical parts and the sensors and the actuators with an HMI/PLC Which I can't access, and it's working,
but I want to change the hmi and to add a plc And I have to make a prg to have the same function ,
I managed to make a little plc program to read all the sensors and the encoder value and to cmd all the motors, but I don't know how to synchronize between the film cutter and the film.
I have a VFD that runs the film cutter (it's a rotary resistor which cuts and seals the product package) and a potentiometer to adjust the speed of the VFD and an encoder attached to the chain of the film cutter
and I also have a servo motor which pulls the film and I control the position and speed of this Servo from the plc
I don't know how to synchronize between the speed of the film cutter (VFD) and the speed of the
film (Servo drive) so I could have the same length of the product in all speeds
I also have an eye color sensor, and I don't know what to do when the eye color sensor detects the eye mark in the film.
Any help appreciated ,
I'm working on a flow pack machine, it has got all the mechanical parts and the sensors and the actuators with an HMI/PLC Which I can't access, and it's working,
but I want to change the hmi and to add a plc And I have to make a prg to have the same function ,
I managed to make a little plc program to read all the sensors and the encoder value and to cmd all the motors, but I don't know how to synchronize between the film cutter and the film.
I have a VFD that runs the film cutter (it's a rotary resistor which cuts and seals the product package) and a potentiometer to adjust the speed of the VFD and an encoder attached to the chain of the film cutter
and I also have a servo motor which pulls the film and I control the position and speed of this Servo from the plc
I don't know how to synchronize between the speed of the film cutter (VFD) and the speed of the
film (Servo drive) so I could have the same length of the product in all speeds
I also have an eye color sensor, and I don't know what to do when the eye color sensor detects the eye mark in the film.
Any help appreciated ,