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Cars > tingyuya’s Garage > Blog > Ibuonline printed circuit board manufacturing services to share 840D NC system repair skill (2)

 

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Abernant, Alabama
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Ibuonline printed circuit board manufacturing services to share 840D NC system repair skill (2)

By tingyuya

??Ibuonline printed circuit board manufacturing services to share 840D NC system repair skill (2)
??In four, motor temperature alarm processing
??The motor is fitted inside the thermistor, its signal through the cable signal feedback to the driver control board inside, when the temperature reaches the alarm value, the system generates a corresponding alarm,
??It can detect feedback end corresponding to the resistance value, if need to shield the alarm, 611D can pass through the driving parameter MD1608 (611A control board is the parameter MD64) set a value less than 100, can shield the alarm, the method can be used only at diagnosis.
??In five, 611A main shaft control unit encoder alarm shielding
??Drive control board to connect the encoder for monitoring, if there is abnormal, it generates a corresponding alarm, 611A main control board through the parameter MD P- 90 bit 2 is 1 shields the alarm.
??In six, 611D V/F drive control
??Sometimes in order to diagnosis using, need to drive for open loop frequency control, this method can only be used for diagnosis, and the speed can be set too high. The driving parameter MD1014 is 1 for open loop frequency control;
??In seven, the drive optimization
??CNC driven by current loop, velocity loop and position loop composed of the optimization, general from inside and outer layer optimization, but because of the current loop of the parameters in the motor and the power module is determined by model manufacturers' default parameters,
??Generally do not need to optimize, so the optimization to optimize the speed loop, then optimizes the position loop.
??Speed loop optimization, generally related to velocity loop gain and time constant speed loop, speed loop time constant is greater and the lower velocity loop gain, the more stable
??, but the precision and dynamic characteristic is, in general, speed loop time constant at around 10ms, and the velocity loop gain adjustment in the speed loop order about in response to a 20-40 overshoot.
??The position loop optimization involves position loop gain and acceleration, adjust the first can reduce the acceleration values, add the position loop gain value, and ensure the stability of the system,
??Then the appropriate increase in acceleration, so as to adapt to the machine tool mechanical characteristics, pay attention to the same set of interpolation shaft position loop gain to be consistent, otherwise it will affect the machining accuracy.
??In eight, shaft screen
??It is sometimes necessary to single shaft for shield, the specific steps are as follows:
??(1) in the corresponding shaft parameters, MD13030 and MD13024 0;
??(2) in the configuration menu, find the corresponding module, is set to "no
??Active "can, at this time, the axis for virtual axis, the corresponding module and the motor can be removed, if you want to restore, the parameters of the back to the original value.
??Axial unloading processing: sometimes because of machine tool needs to machine tool axis to unload or load, such as rotational indexing head, this time to swap the encoder and motor power socket, but also do not want to change the above parameters of operators, this time can the temporary set to PARKING axis, the method is also reset the axis DB3X.DBX1.5 and 1.6 can be.
??This article from: ibuonline PCBs & Manufacturing Services, other related reading ibuonline LEDs & Optoelectronics, Lighting & Electricals

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Cars > tingyuya’s Garage > Blog > Ibuonline printed circuit board manufacturing services to share 840D NC system repair skill (2)

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