Installation manual

www.baldormotion.com
Operation 5-13MN1933
5.4.2 Selecting a scale
Mint defines all positional and speed related motion keywords in terms of encoder quadrature
counts (for servo motors) or steps for stepper motors. The number of quadrature counts (or
steps) is divided by the SCALEFACTOR allowing you to use units more suitable for your
application. The unit defined by setting a value for scale is called the user unit (uu).
Consider a motor with a 1000 line encoder. This provides 4000 quadrature counts for each
revolution. If SCALEFACTOR is not set, a Mint command that involves distance, speed, or
acceleration may need to use a large number to specify a significant move. For example
MOVER(0)=16000 (Move Relative) would rotate the motor by 16000 quadrature counts - only
four revolutions. By setting a SCALEFACTOR of 4000, the user unit becomes revolutions. The
more understandable command MOVER(0)=4 could now be used to move the motor four
revolutions.
In applications involving linear motion a suitable value for SCALEFACTOR would allow
commands to express values in linear distance, for example inches, feet or millimetres.
1. In the Toolbox, click the Parameters icon.
2. Click the Scale tab.
3. Click in the Axis drop down box to select the
axis. Each axis can have a different scale if
required.
4. Click in the Scale box and type a value.
5. Click Apply.
This immediately sets the scaling factor for
the selected axis which will remain in the
NextMove PCI-2 until another scale is
defined or power is removed from the
NextMove PCI-2.