Lenze ETC Motion Control - Manual (Page 209)

Machine constants
Configuration of axes − Resolution
MK_IMPULSE
4
4.7
4.7.1
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209 EDSTCXN EN 2.0
4.7 Configuration of axes − Resolution
4.7.1 MK_IMPULSE
This machine constant determines the number of pulses assigned to the
actual value counter of the axis interface for rotary motors per revolution on
the motor shaft and for linear induction motors per millimeter. Enter the
number of pulses including the pulse quadruplication; e.g. for ECS compact
servo 65536 imp. / revolution.
By specifying a negative value, the definition direction of the axis is reversed,
i.e. it moves into the opposite direction. Changing the sign when specifying
MK_WEG has the same effect.
The same applies to the home position approach (must be taken into
consideration for MK_REF_RICHTUNG_UND_FOLGE)!
4.7.2 MK_WEG
This machine constant determines the distance at which the axis computer
counts the increments entered under MK_IMPULSE, i.e. in the case of rotary
motors, the distance per revolution on the motor shaft, and in the case of
linear motors, 1 mm. Millimeters are used as a unit for linear axes, degrees
for rotation axes.
MCS06 servo motor with ECS compact servo (65536 pulses). The motor goes
via a gearbox (4:1) to a spindle, which moves a slide backwards by 3.4 mm per
revolution. I.e. if a positive distance is specified, the mechanics move in
negative direction.
MK_IMPULSE 65536,...;
MK_WEG −0.85,...; /* 3.4 / 4 */
4.7.3 MK_MASSSTAB
This machine constant defines a multiplication factor for axis−specific
position specifications and position indicators. This is useful if diameters are
to be programmed in the case of round workpieces, but the feed speed is to
be based on the radius at the same time.
A scale factor for X of 0.5 means that a position specification of 10 mm
results in a traversing movement of X by 5 mm. However, the display only
shows the 10 mm.
Example