Connection of a handwheel to a CNC machine

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Ira Lamb
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1 Application description 04/2014 to a CNC machine SINUMERIK 840D sl

2 Warranty and liability Warranty and liability Note The application examples are non-binding and do not claim to be complete in terms of configuration and equipment or to take account of any other contingencies. The application examples do not represent specific customer solutions; they are intended only as support for typical tasks. The user has sole responsibility for ensuring correct operation of the products described. These application examples do not exempt the user from their due diligence obligation with regard to application, installation, operation and maintenance. By using these application examples, you agree that Siemens cannot be made liable for possible damage beyond the mentioned liability clause. We reserve the right to make changes to these application examples at any time and without prior notice. If there are any differences between the suggestions made in these application examples and other Siemens publications such as catalogs, the contents of the other document(s) take priority. We do not provide a warranty for any of the information contained in this document. We accept no liability for any damage or loss caused by the examples, information, programs, planning data or performance data described in this application example, irrespective of the legal basis for claims arising from such damage or loss, unless liability is mandatory. For example, according to the product liability law, in cases of malfeasance, gross negligence, due to endangerment of life, body or health, due to assumption of a guarantee for a product's characteristics of state, due to malicious concealment of a defect or due to violation of basic contractual obligations. Any compensation for violation of basic contractual obligations, however, shall be limited to the foreseeable damage or loss which is typically envisaged in contracts unless there has been gross negligence or unless liability is mandatory due to endangerment of life, body, or health. Any change to the burden of proof to your disadvantage is not covered hereby. Any form of duplication of these application examples or excerpts hereof is not permitted without the express consent of Siemens Industry Sector. Security notes Siemens provides products and solutions with industrial security functions that support the secure operation of plants, solutions, machines, devices, and/or networks. They are important components in a holistic industrial security concept. With this in mind, Siemens products and solutions undergo continuous development. Siemens recommends strongly that you regularly check for product updates. To ensure that Siemens products and solutions are operated securely, suitable preventive measures (e.g. cell protection concept) must be taken and each component must be integrated into a state-of-the-art holistic industrial security concept. Third-party products that may be in use should also be considered. For more information about industrial security, visit To receive information about product updates on a regular basis, register for our product newsletter. For more information, visit Entry ID: , V1.0, 04/2014 2

3 Table of contents Table of contents Warranty and liability Use of a handwheel Overview Overview Required components Machine control panel MCP 483 PN Signal cable for handwheel connection Handwheel Assembly of the components Contact persons History Entry ID: , V1.0, 04/2014 3

Turning the hand crank causes the tool sled to move, which moves the selected axis in a positive or negative direction.

4 1 Use of a handwheel 1.1 Overview 1 Use of a handwheel 1.1 Overview Electronic handwheels can be retrofitted on CNC machines in order to improve the handling in manual mode. Turning the hand crank causes the tool sled to move, which moves the selected axis in a positive or negative direction. Thus, use of the handwheel is intuitive, because it corresponds to the principle of a conventional machine. The step-by-step connection of a handwheel to a machine is explained in the following. Structure of an electronic handwheel The following figure provides an overview of the handwheels used. Fig. 1-1 Various sizes of electronic handwheels Entry ID: , V1.0, 04/2014 4

5 2 2.1 Overview Overview Schematic diagram The task of an electronic handwheel is to change an axis in the interior of the machine. This is done by means of a user performing manual operations on the machine. The handwheel is installed by connecting the machine control panel to the signal cable and the signal cable to the handwheel. The interfaces for connecting the components are represented by the outputs X60/61 and the wiring of the signal cable to the handwheel. The handwheel can be used immediately after it is installed. The following figure shows a schematic of how an electronic handwheel is connected to a machine or controller. Fig. 2-1 Connecting a handwheel to a machine control panel (MCP) Requirements The following components must be available: Machine control panel MCP 483 PN PLC basic block FC19 Entry ID: , V1.0, 04/2014 5

6 2 2.2 Required components 2.2 Required components The most important components for installing a handwheel on a machine are listed in the following. The MLFB numbers of each component are specified to ensure unambiguous identification Machine control panel MCP 483 PN The machine control panel (MCP) shown corresponds to the standard delivery version. The associated MLFB number is: 6FC5303-0AF22-1AA1. Front Fig. 2-2 Machine control panel MCP 483 PN Table 2-1 Components of the machine control panel (MCP 483 PN) No. Description 1. Emergency stop button 2. Installation locations for control devices (d = 16 mm) 3. Reset button 4. Program control 5. Operating modes, machine functions 6. User keys T1 to T15 7. Direction keys with rapid traverse override (R1 to R15) 8. Spindle control with override switch 9. Feed control with override switch 10. Keyswitch (four positions) Entry ID: , V1.0, 04/2014 6

7 2 2.2 Required components Rear Fig. 2-3 Display of the interfaces of the machine control panel MCP 483 PN Table 2-2 Components of the machine control panel MCP 483 PN No. Description Description in device 1. Ground terminal 2. Feed override X30 3. Spindle override X31 4. Power supply interface X10 5. Switch S1 6. Handwheel connection X60 7. Handwheel connection X61 8. Emergency Stop 9. Mounting slots for additional command devices 10. Ethernet connection, port 1 X Ethernet connection, port 2 X Ethernet cable strain relief 13. LEDs 14. Switch S2 15. Customer-specific inputs and outputs Entry ID: , V1.0, 04/2014 7

8 2 2.2 Required components Signal cable for handwheel connection The signal cable represents the connection between the machine control panel and electronic handwheel. In the current example, the signal cable (MLFB 6FX8002-2CP00-1AA5) is 0.5 meters long. The individual components of the connecting cable are listed in the following (Fig. 2-4 and Tab. 2-3). Fig. 2-4 Signal cable Table 2-3 Components of the signal cable for handwheels No. Identifier of the components 1. Signal connector 2. Signal cable 3. Insulated pin cable lug 4. Insulated ring cable lug 5. Flexible cable 0.75 mm3 Entry ID: , V1.0, 04/2014 8

2 2.2 Required components 2.2.3 Handwheel Electronic handwheels are equipped with a magnetic latching mechanism that supports traversing with incremental accuracy.

They differ in terms of the interface and the size of the front plate. The cogging torque and the size of the adjustment wheel are adapted to the front plate.

9 2 2.2 Required components Handwheel Electronic handwheels are equipped with a magnetic latching mechanism that supports traversing with incremental accuracy. The axis selected via the control can be positioned paraxially. All handwheels have 100 l/u lines. The electronic handwheels are available in several versions. They differ in terms of the interface and the size of the front plate. The cogging torque and the size of the adjustment wheel are adapted to the front plate. In the current example, the selected handwheel has the MLFB 6FC9320-5DC01 / 6FC9320-5DB01. Fig. 2-5 Electronic handwheel Table 2-4 Components of the electronic handwheel No. Description 1. Front plate 2. Rotary knob Entry ID: , V1.0, 04/2014 9

10 2 2.3 Assembly of the components 2.3 Assembly of the components The three components (MCP, signal cable and handwheel) must be connected to one another. The X60/61 interface forms the connection between the MCP and the signal cable by means of a plug-in connection system (Fig. 2-2). Fig. 2-2 Connection between handwheel and MCP via the interface X60/61 Entry ID: , V1.0, 04/

11 2 2.3 Assembly of the components The terminal on the back of the handwheel is the second interface. The eight electric pin cable lugs must be connected at the six terminal connections of the handwheel as per the following diagram (Tab. 2-5). After the handwheel is properly wired, it can immediately be put into operation. The controller immediately localizes the handwheel, which dispenses with the need for a booting process for activating the function by switching the controller on and off. Fig. 2-3 Signal cable and connecting terminal of the electronic handwheel Table 2-5 Electrical connection between the handwheel and signal cable No. Connection to handwheel terminal Connecting cable (color) 1. 5 V Brown and green 2. 0 V Black and yellow 3. /A Red 4. A Orange 5. /B Violet 6. B Blue Entry ID: , V1.0, 04/

12 3 Contact persons 3 Contact persons Siemens AG Industry Sector I DT MC MTS APC 2 Frauenauracher Strasse 80 D Erlangen, Germany MC-MTS-APC-Tech.Team.i-dt@siemens.com 4 History Table 4-1 Version Date Revision V1.0 04/2014 First Edition Entry ID: , V1.0, 04/

09/2014 SINAMICS G/S: HMI

09/2014 SINAMICS G/S: HMI Application description 09/2014 SINAMICS G/S: SINAMICS G120 SINAMICS S120 http://support.automation.siemens.com/ww/view/en/97550333 Warranty and liability Warranty and liability Note The application examples