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Hello all,
I am a new controls tech just getting started and i have an issue that maybe you guys can point me in the right direction with. So we have a slitter machine and an unwinder that moves using a hydraulic motor. there are various control switches that operate the chucks differently. Each chuck has its own control panel with the same controls on it. All these controls send signals to a solenoid that then tells the motor to drive that function. there is a left and right switch that controls both chucks moving inside and outside as in closer together and farther apart. the solenoids light up and the chucks move good. there is another switch however that is supposed to move both chucks simultaneously left or right as one. when you turn this switch i get both power and continuity to the solenoid switch and you even hear the hydraulic motor kick on however the chucks go to move and stick almost immediately as if the motor cant move it. it moves maybe an inch if that in either direction before stopping entirely. Now i have tried to troubleshoot this and i am seeing the solenoid signal for the movement while the switch is on i get continuity and power on the solenoids when the switch is left and right and nothing when its off which is good. So can someone tell me why the motor is seizing or failing to move like it should when using this control switch. I tested the coils on the hydraulic valve and they both read 21 ohms so those look good. Is this a clear indication of a bad hydraulic valve block? or does it sound like a wiring issue?
I am a new controls tech just getting started and i have an issue that maybe you guys can point me in the right direction with. So we have a slitter machine and an unwinder that moves using a hydraulic motor. there are various control switches that operate the chucks differently. Each chuck has its own control panel with the same controls on it. All these controls send signals to a solenoid that then tells the motor to drive that function. there is a left and right switch that controls both chucks moving inside and outside as in closer together and farther apart. the solenoids light up and the chucks move good. there is another switch however that is supposed to move both chucks simultaneously left or right as one. when you turn this switch i get both power and continuity to the solenoid switch and you even hear the hydraulic motor kick on however the chucks go to move and stick almost immediately as if the motor cant move it. it moves maybe an inch if that in either direction before stopping entirely. Now i have tried to troubleshoot this and i am seeing the solenoid signal for the movement while the switch is on i get continuity and power on the solenoids when the switch is left and right and nothing when its off which is good. So can someone tell me why the motor is seizing or failing to move like it should when using this control switch. I tested the coils on the hydraulic valve and they both read 21 ohms so those look good. Is this a clear indication of a bad hydraulic valve block? or does it sound like a wiring issue?
