irondesk40
Member
Have run across a machine that is used in one of our plants that we are using as a contractor that I am hoping someone can give me some advice on.
It has a plc5 plc that sends a signal to start from the plc to a indramat controller. This controller is controlling sometype of portional valve that not only controls how much hydraulic pressure is going to a hydraulic valve, but also which port is open to either raise or lower the mechanism that the hydraulic valve is controlling.
Depending upon a pot setting on the front of the controlling, the valve will open and close at a certain speed. There is a linkage that is mechanically linked to the hydraulic cylinder that slides through what appears to be linear transducer ( that was what the technician referred to it as).
Here is the problem, the old indramat has bit the dust, there is no documentation on the machine, no schematics etc., but what i have been able to determine is that the only signals that the plc sends to the indramat controller is start, and it recieves a up/down signal to tell the indramat controller which direction to send the hydraulic valve and how fast the cylinder goes up or down.
Does anyone have any good suggestion on a stand alone type controller that could be used to control the hydraulic cylinder and tell it to extend in or out and control the speed that it extends and retracts. Also, any good advice on a portional type valve for a hydraulic cylinder and the best way to sense how fast the cylinder may be moving.
Have not done any projects contolling hydraulic cylinders, but with the expertise of the folks that use this site, hoping someone could lead me in the right direction.
Will attempt to attach some pictures of the indramat controller and valve assembly.
Thanks
It has a plc5 plc that sends a signal to start from the plc to a indramat controller. This controller is controlling sometype of portional valve that not only controls how much hydraulic pressure is going to a hydraulic valve, but also which port is open to either raise or lower the mechanism that the hydraulic valve is controlling.
Depending upon a pot setting on the front of the controlling, the valve will open and close at a certain speed. There is a linkage that is mechanically linked to the hydraulic cylinder that slides through what appears to be linear transducer ( that was what the technician referred to it as).
Here is the problem, the old indramat has bit the dust, there is no documentation on the machine, no schematics etc., but what i have been able to determine is that the only signals that the plc sends to the indramat controller is start, and it recieves a up/down signal to tell the indramat controller which direction to send the hydraulic valve and how fast the cylinder goes up or down.
Does anyone have any good suggestion on a stand alone type controller that could be used to control the hydraulic cylinder and tell it to extend in or out and control the speed that it extends and retracts. Also, any good advice on a portional type valve for a hydraulic cylinder and the best way to sense how fast the cylinder may be moving.
Have not done any projects contolling hydraulic cylinders, but with the expertise of the folks that use this site, hoping someone could lead me in the right direction.
Will attempt to attach some pictures of the indramat controller and valve assembly.
Thanks