Siemens system numerical control machine tool power supply design

Abstract

The application discloses a Siemens system numerical control machine tool power supply design, including: first control unit NX, second control unit NCU, first power supply unit ALM1, second power supply unit ALM2, I / O module, relay unit and PLC module; wherein, the first control unit and the second control unit are connected, the first power supply unit and the first control unit are connected, the second power supply unit is connected with the second control unit; the detection interface of the first control unit and the detection interface of the second control unit NCU are connected with the I / O module; the I / O module is used for detecting the signals of the first control unit NX, the first power supply unit ALM1, the second control unit NCU and the second power supply unit ALM2; the relay unit is connected with the first control unit NX, the second control unit NCU and the I / O module; the power supply logic timing design of the PLC module is carried out according to the detected signals, so as to control the on-off of the relay unit through the logic timing.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of numerical control machine tools, in particular to a Siemens system numerical control machine tool power supply design. BACKGROUND

[0002] Each mechanical manufacturing equipment configured with a numerical control system has a power supply unit, and stable operation of the power supply unit is related to the stability of the whole equipment. Due to the large number of servo shafts and large main shaft power of heavy, large or complex equipment, one control unit and one power supply unit cannot meet the use requirements, and more and more equipment is configured with two or more control units and power supply units. If there are hidden dangers in the power supply design, the equipment will frequently generate power supply alarms during operation, resulting in irregular shutdown of the equipment, and in serious cases, the tool and workpiece may be damaged or scrapped, which is not conducive to the use of delivered machine tool equipment, increases the after-sales maintenance cost, and has a negative impact on the sales of subsequent products.

[0003] Therefore, for mechanical manufacturing equipment, especially heavy and complex equipment, the power supply design is very important. SUMMARY

[0004] The purpose of the application is to provide a Siemens system numerical control machine tool power supply design, which ensures continuous normal power supply of a machine tool system configured with two power supply units and eliminates system alarms caused by power supply control of the machine tool itself.

[0005] In order to achieve the above purpose, the application provides a Siemens system numerical control machine tool power supply design, which comprises:

[0006] a first control unit NX, a second control unit NCU, a first power supply unit ALM1, a second power supply unit ALM2, an I / O module, a relay unit and a PLC module;

[0007] The first control unit NX and the second control unit NCU are connected, the first power supply unit ALM1 and the first control unit NX are connected, and the second power supply unit ALM2 and the second control unit NCU are connected.

[0008] The detection interface of the first control unit NX and the detection interface of the second control unit NCU are connected with the I / O module; and the I / O module is used for detecting signals of the first control unit NX, the first power supply unit ALM1, the second control unit NCU and the second power supply unit ALM2.

[0009] The relay unit is connected to the first control unit NX, the second control unit NCU and the I / O module.

[0010] The power supply logic timing of the PLC module is designed according to the detected signal, so as to control the on-off of the relay unit through the logic timing.

[0011] In an optional solution, the second control unit NCU is connected to the X100 of the first control unit NX through X105;

[0012] The second control unit NCU is connected to the X200 of the second power supply unit ALM2 through X100;

[0013] The first control unit NX is connected to the X200 of the first power supply unit ALM1 through X101.

[0014] In an optional solution, the relay unit includes a first relay KA1 and a second relay KA2;

[0015] The 13th pin of the first relay KA1 is connected to the 1st pin of the I / O module 4DO,

[0016] The 5th pin of the first relay KA1 is connected to the 1st pin of the interface 122 of the second control unit NCU;

[0017] The 8th pin of the first relay is connected to the 1st pin of the interface X122 of the first control unit NX;

[0018] The 13th pin of the second relay KA2 is connected to the 2nd pin of the I / O module 4DO;

[0019] The 5th pin of the second relay KA2 is connected to the 2nd pin of the interface X122 of the second control unit;

[0020] The 8th pin of the second relay is connected to the 2nd pin of the interface X122 of the first control unit NX.

[0021] In an optional solution, the 3rd pin of the interface X122 of the first control unit NX is connected to the 1st pin of the 4DI of the I / O module;

[0022] The 9th pin of the interface X122 of the first control unit NX is connected to the 5th pin of the 4DI of the I / O module;

[0023] The 10th pin of the interface X122 of the first control unit NX is connected to the 6th pin of the 4DI of the I / O module;

[0024] The 3rd pin of the interface X122 of the second control unit NCU is connected to the 5th pin of the 4DI of the I / O module;

[0025] The 9th pin of the interface X132 of the second control unit NCU is connected to the 1st pin of the 4DI of the I / O module.

[0026] The 10th pin of the interface X132 of the second control unit NCU is connected to the 2nd pin of the 4DI of the I / O module.

[0027] In an alternative, the on-off of the first relay KA1 is controlled by the 1st pin of the 4DO of the I / O module based on the OFF1 signal output by the PLC module.

[0028] The on-off of the second relay KA2 is controlled by the 2nd pin of the 4DO of the I / O module based on the OFF3 signal output by the PLC module.

[0029] In an alternative, the 1st pin of the interface X122 of the first control unit NX receives the OFF1 signal sent by the PLC module by setting the value of the parameter P840 of the first power supply unit ALM1.

[0030] The 1st pin of the interface X122 of the second control unit NCU receives the OFF1 signal sent by the PLC module by setting the value of the parameter P840 of the second power supply unit ALM2.

[0031] In an alternative, the 2nd pin of the interface X122 of the second control unit NCU or the first control unit NX receives the OFF3 signal sent by the PLC module by setting the value of the parameter P849 of each axis drive unit.

[0032] In an alternative, the 3rd pin of the interface X122 of the second control unit NCU receives the OFF1 READY signal of the first power supply unit ALM1 sent by the 9th pin of the interface X122 of the first control unit NX15, and the 3rd pin of the interface X122 of the first control unit NX receives the OFF1 READY signal of the second power supply unit ALM2 sent by the 9th pin of the interface X132 of the second control unit NCU, by setting the value of the parameter P864 of each axis drive unit.

[0033] In an alternative, the 9th pin and the 10th pin of the interface X122 of the first control unit NX send the OFF1 READY and EP READY signals of the first power supply unit ALM1 to the I / O module by setting the parameters P738 and P739 of the first control unit NX.

[0034] The present application has the following advantages:

[0035] The application ensures that the machine tool system configured with two or more power supply units and control units is continuously normally powered, eliminates system alarms caused by power supply control of the machine tool itself, eliminates tool and workpiece damage or scrapping caused by occasional system alarms, improves the stability of the machine tool, and reduces the failure rate of the machine tool.

[0036] The application has other characteristics and advantages, which will be apparent or will be described in detail in the drawings incorporated herein and the subsequent specific embodiments, which are collectively used to explain the specific principles of the application. BRIEF DESCRIPTION OF DRAWINGS

[0037] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which:

[0038] Figure 1 A whole function block diagram of a Siemens system numerical control machine tool power supply design according to an embodiment of the application is shown.

[0039] Figure 2 A circuit diagram of a Siemens system numerical control machine tool power supply design according to an embodiment of the application is shown. DETAILED DESCRIPTION

[0040] The application will be described in more detail below. Although preferred embodiments are provided, it should be understood that the application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the application is more thorough and complete, and the scope of the application is fully conveyed to those skilled in the art.

[0041] The application is applied to a Siemens system numerical control machine tool, and the numerical control system is configured with two control units and two power supply units. Each control unit is connected to one power supply unit. The power supply design is composed of hardware circuit design, parameter design and PLC program design. The hardware circuit design uses two control units to connect two power supply units respectively. The detection interface of the control unit is connected to the I / O module, which is used to detect the signal state of the control unit and the power supply unit. The parameter design defines the interface type of all control units, defines the connection parameters of all control units, power supply units and drive units, and realizes the one-to-one correspondence relationship between the hardware circuit design and the system internal parameter setting. The PLC program design uses the state signals of the control unit and the power supply unit detected by the I / O module to design the power supply logic timing. This power supply design is applied to complex machine tools configured with two or more control units and power supply units, can control the working state of all power supply units at the same time, prevents frequent power supply alarms, reduces the failure rate of the machine tool, and improves the stability of the machine tool.

[0042] Embodiment

[0043] With reference to Figure 1 and Figure 2 The embodiment provides a Siemens system numerical control machine tool power supply design, which comprises the following:

[0044] a first control unit NX, a second control unit NCU, a first power supply unit ALM1, a second power supply unit ALM2, an I / O module, a relay unit and a PLC module;

[0045] The first control unit NX is connected with the second control unit NCU, the first power supply unit ALM1 is connected with the first control unit NX, and the second power supply unit ALM2 is connected with the second control unit NCU.

[0046] The detection interface of the first control unit NX and the detection interface of the second control unit NCU are connected with the I / O module, and the I / O module is used for detecting signals of the first control unit NX, the first power supply unit ALM1, the second control unit NCU and the second power supply unit ALM2.

[0047] The relay unit is connected with the first control unit NX, the second control unit NCU and the I / O module.

[0048] The power supply logic timing of the PLC module is designed according to the detected signals, so as to control on-off of the relay unit through the logic timing.

[0049] Specifically, the hardware circuit design uses two control unit modules to connect two power supply modules respectively, the second control unit NCU connects the X200 interface of the second power supply unit ALM2 through the X100 interface, and the first control unit NX15 connects the X200 interface of the first power supply unit ALM1 through the X101 interface. The X105 of the second control unit NCU is connected to the X100 of the first control unit NX. The 9th pin of the interface X132 of the second control unit NCU is connected to the 1st pin of the I / O module 4DI, which is used to detect the state of the OFF1 READY signal of the second control unit NCU; the 10th pin of the interface X132 of the second control unit NCU is connected to the 2nd pin of the I / O module 4DI, which is used to detect the state of the EP READY signal of the second power supply unit ALM2; the 1st pin of the I / O module 4DO is connected to the 13th pin of the first relay KA1, which is used to output the OFF1 signal of the PLC to control the on-off of the first relay KA1, and the 2nd pin of the I / O module 4DO is connected to the 13th pin of the second relay KA2, which is used to output the OFF3 signal of the PLC to control the on-off of the second relay KA2; the 1st pin of the interface X122 of the second control unit NCU is connected to the 5th pin of the first relay KA1, and the 2nd pin of the interface X122 of the second control unit NCU is connected to the 5th pin of the second relay KA2; the 3rd pin of the interface X122 of the second control unit NCU is connected to the 5th pin of the I / O module 4DI, which is used to detect the state of the OFF1 READY signal of the second control unit NCU; the 9th pin of the interface X122 of the first control unit NX15 is connected to the 5th pin of the I / O module 4DI, which is used to detect the state of the OFF1 READY signal of the first control unit NX15; the 10th pin of the interface X122 of the first control unit NX15 is connected to the 6th pin of the I / O module 4DI, which is used to detect the state of the EP READY signal of the first power supply unit ALM1; the 1st pin of the interface X122 of the first control unit NX15 is connected to the 8th pin of the first relay KA1, and the 2nd pin of the interface X122 of the first control unit NX15 is connected to the 8th pin of the second relay KA2; the 3rd pin of the interface X122 of the first control unit NX15 is connected to the 1st pin of the I / O module 4DI, which is used to detect the state of the OFF1 READY signal of the second control unit NCU.

[0050] The parameter design defines the interface type of all control units, defines the connection parameters of all control units, power supply units and drive units, and realizes the one-to-one correspondence relationship between the hardware circuit design and the system internal parameter setting.

[0051] 1. By setting the value of the parameter P840 of the first power supply unit ALM1, the pin 1 of the interface X122 of the first control unit NX receives the OFF1 signal sent by the PLC module; by setting the value of the parameter P840 of the second power supply unit ALM2, the pin 1 of the interface X122 of the second control unit NCU receives the OFF1 signal sent by the PLC module.

[0052] 2. By setting the value of the parameter P849 of each axis drive unit, the axis receives the OFF3 signal sent by the PLC module through the pin 2 of the interface X122 of the second control unit NCU or the first control unit NX connected thereto.

[0053] 3. By setting the value of the parameter P728 of the first control unit NX15, the output type of the pins 9 and 10 of the interface X122 of the first control unit NX15 is changed. There are address bits corresponding to the pins 9 and 10 of X122 in the P728 parameter, and the set value of the corresponding address bits can be 0 or 1. For example, when the address bit corresponding to the pin 9 of X122 is set to 0, the type of the pin 9 is “input”, which can only be used to receive external signals; if the address bit corresponding to the pin 10 of X122 is set to 1, the type of the pin 10 is “output”, which can output signals to the outside.

[0054] 4. By setting the parameters P738 and P739 of the first control unit NX, the pins 9 and 10 of the interface X122 of the first control unit NX send the OFF1 READY and EP READY signals of the first power supply unit ALM1 to the I / O module.

[0055] 5. By setting the value of the parameter P864 of each axis drive unit, the axis connected with the second control unit NCU but powered by the first power supply unit ALM1 receives the OFF1 READY signal of the first power supply unit ALM1 sent by the pin 9 of X122 of the second control unit NX15 through the pin 3 of X122 of the second control unit NCU; the axis connected with the first control unit NX but powered by the second power supply unit ALM2 receives the OFF1 READY signal of the second power supply unit ALM2 sent by the pin 9 of X132 of the first control unit NCU through the pin 3 of X122 of the first control unit NX.

[0056] The OFF1 READY signals of the second control unit NCU and the first control unit NX15 and the EP READY signals of the first power supply unit ALM1 and the second power supply unit ALM2 detected by the I / O module are used in the power supply logic timing design of the PLC program design.

[0057] After the power supply design is applied, when the numerical control system is powered, the I / O module can simultaneously detect the EP READY and OFF1 READY feedback signals of the first power supply unit ALM1 and the second power supply unit ALM2. Only when the EP READY and OFF1 READY feedback signals of the first power supply unit ALM1 and the second power supply unit ALM2 are normal, the PLC program will execute the last power supply action, so that the DC bus of the first power supply unit ALM1 and the second power supply unit ALM2 is charged to 600V, reaching the normal use standard. In addition, the shaft connected with the second control unit NCU but powered by the first power supply unit ALM1 connected with the first control unit NX15 can directly receive the OFF1 READY signal state of the first power supply unit ALM1, and the shaft connected with the first control unit NX15 but powered by the second power supply unit ALM2 connected with the second control unit NCU can directly receive the OFF1 READY signal state of the second power supply unit ALM2. When the power supply signal of the first power supply unit ALM1 or the second power supply unit ALM2 is not normal, the shaft will not be enabled, and the numerical control system will not be powered, which will not cause the inconvenience of checking the alarm such as "DC bus under-voltage", and will not cause the dangerous state of the free movement of the machine tool shaft.

[0058] The hardware circuit design of the embodiment can simultaneously detect the signal states of the two control units and the two power supply units, the parameter design can realize one-to-one correspondence between the hardware circuit design and the system internal parameter setting, and finally, on the premise of the hardware circuit design and the parameter design, the machine tool system is powered according to the power supply sequence of the PLC program design, which can ensure the continuous normal power supply of the two power supply units, eliminate the system alarm caused by the power supply control of the machine tool itself, eliminate the damage or scrap of the tool and workpiece caused by the occasional system alarm, improve the stability of the machine tool, and reduce the failure rate of the machine tool.

[0059] The above has described the embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A Siemens system CNC machine tool power supply design, characterized in that, The application relates to a PLC module, which comprises: a first control unit NX, a second control unit NCU, a first power supply unit ALM1, a second power supply unit ALM2, an I / O module, a relay unit and a PLC module; wherein the first control unit NX and the second control unit NCU are connected, the first power supply unit ALM1 and the first control unit NX are connected, and the second power supply unit ALM2 and the second control unit NCU are connected; a detection interface of the first control unit NX and a detection interface of the second control unit NCU are connected with the I / O module, and the I / O module is used for detecting signals of the first control unit NX, the first power supply unit ALM1, the second control unit NCU and the second power supply unit ALM2; the relay unit is connected with the first control unit NX, the second control unit NCU and the I / O module; power supply logic timing of the PLC module is designed according to the detected signals, so as to control on-off of the relay unit through the logic timing; the second control unit NCU is connected with X100 of the first control unit NX through X105; the second control unit NCU is connected with X200 of the second power supply unit ALM2 through X100; the first control unit NX is connected with X200 of the first power supply unit ALM1 through X101; the relay unit comprises a first relay KA1 and a second relay KA2; a 13th pin of the first relay KA1 is connected with a 1st pin of the I / O module 4DO, a 5th pin of the first relay KA1 is connected with a 1st pin of an interface 122 of the second control unit NCU; an 8th pin of the first relay is connected with a 1st pin of an interface X122 of the first control unit NX; a 13th pin of the second relay KA2 is connected with a 2nd pin of the I / O module 4DO; a 5th pin of the second relay KA2 is connected with a 2nd pin of the interface X122 of the second control unit; an 8th pin of the second relay is connected with a 2nd pin of the interface X122 of the first control unit NX; on-off of the first relay KA1 is controlled through the 1st pin of the I / O module 4DO based on an OFF1 signal output by the PLC module; on-off of the second relay KA2 is controlled through the 2nd pin of the I / O module 4DO based on an OFF3 signal output by the PLC module; a value of a parameter P840 of the first power supply unit ALM1 is given, so that the 1st pin of the interface X122 of the first control unit NX receives the OFF1 signal output by the PLC module; a value of a parameter P840 of the second power supply unit ALM2 is given, so that the 1st pin of the interface X122 of the second control unit NCU receives the OFF1 signal output by the PLC module; a value of a parameter P840 of the first power supply unit ALM1 is given, so that the 1st pin of the interface X122 of the first control unit NX receives the OFF1 signal output by the PLC module; By setting the value of the parameter P840 of the second power supply unit ALM2, the 1 pin of the interface X122 of the second control unit NCU receives the OFF1 signal sent by the PLC module; By setting the value of the parameter P849 of each axis drive unit, the axis connected with the second control unit NCU or the first control unit NX receives the OFF3 signal sent by the PLC module through the 2 pin of the interface X122 of the second control unit NCU or the first control unit NX; The 3 pin of the interface X122 of the first control unit NX is connected to the 1 pin of the 4DI of the I / O module; The 9 pin of the interface X122 of the first control unit NX is connected to the 5 pin of the 4DI of the I / O module; The 10 pin of the interface X122 of the first control unit NX is connected to the 6 pin of the 4DI of the I / O module; The 3 pin of the interface X122 of the second control unit NCU is connected to the 5 pin of the 4DI of the I / O module; The 9 pin of the interface X132 of the second control unit NCU is connected to the 1 pin of the 4DI of the I / O module; The 10 pin of the interface X132 of the second control unit NCU is connected to the 2 pin of the 4DI of the I / O module; By setting the value of the parameter P864 of each axis drive unit, the axis connected with the second control unit NCU but powered by the first power supply unit ALM1 receives the OFF1 READY signal of the first power supply unit ALM1 sent by the 9 pin of the X122 of the second control unit NCU through the 3 pin of the X122 of the second control unit NCU; the axis connected with the first control unit NX but powered by the second power supply unit ALM2 receives the OFF1 READY signal of the second power supply unit ALM2 sent by the 9 pin of the X132 of the first control unit NCU through the 3 pin of the X122 of the first control unit NX; By setting the parameters P738, P739 of the first control unit NX, the 9 pin, 10 pin of the interface X122 of the first control unit NX sends the OFF1 READY, EP READY signal of the first power supply unit ALM1 to the I / O module.

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