Tool Changer; Using The Program - Baldor Flex+DriveII Operating Manual

5.2

Tool changer

In this demonstration a Mint program will be used to increase the speed of a typical tool changer application. This is
achieved by ensuring that the specified tool is always selected by rotating the tool carousel by the 'shortest path'.
The tool positions are read from the presets table.
1. If you are not working through the manual in sequence, you must download your parameter file.
See section 4.2.1, steps 3. to 5. if you are not sure how to do this.
2. Download the preset table Presets.pre.
See section 4.3, steps 3. to 6. if you are not sure how to do this.
3. Open the file Toolchanger.mnt.
See section 4.2.2. if you are not sure how to do this.
4. On the toolbar, click the Start button.
5.2.1

Using the program

The program reads the digital inputs to determine which tool is required. In this demonstration, 8 different tools can
be selected by using a combination of input switches 0, 1 and 2, as shown in Table 2.
Tool
(Bit pattern sum)
0
1
2
3
4
5
6
7
1. Confirm input switch 7 is in the off (up) position.
2. Use a combination of input switches 0, 1 and 2 to select a tool. For example, to select tool 3 set input switches 0 and
1 to the on position.
It is important to understand that the program is now using the digital inputs. The input switches are not being used
to directly select a preset move, as they were in section 4.3.1.
3. Set input switch 7 to the on position to start the move.
The program compares the position of the current tool and the new tool, using information from the presets table.
From this, it calculates the shortest (and therefore quickest) way to rotate the tool carousel to select the new tool.
To move the new tool into position, the program performs a relative move.
The status of the program is shown in the Output window at the bottom of the Edit & Debug screen.
5-2 Applications
Input switch 0
(Bit pattern value: 1)
Off
On
Off
On
Off
On
Off
On
Table 2 - Tool selection using digital inputs
Input switch 1
(Bit pattern value: 2)
Off
Off
On
On
Off
Off
On
On
Input switch 2
(Bit pattern value: 4)
Off
Off
Off
Off
On
On
On
On
MN1917