CNC Setup Utility Manual
P/N 70000490C - Machine Constants
2-22
All rights reserved. Subject to change without notice.
10-December-04
Table 2-2, Machine Constants Setup
(Continued)
Machine Constant
Parameter
Function Settings
MC_2109:
Y Linear Encoder
Phase
Moving the Y-axis in a positive direction
should result in a positive count on the
axis display. Likewise, moving an axis
in a negative direction should result in a
negative count on the axis display. If an
axis display does not count in the
appropriate direction, adjust the
Encoder Phase settings to correct the
problem.
NOTE:
This is the only way to change
the direction of the count without
making hardware changes.
Not invert
[Default]
Invert
MC_2110:
Y Ballscrew Pitch
Pitch is the linear distance traveled per
revolution of the Y-axis ballscrew.
NOTE:
This parameter applies only to
rotary encoders. Do not use if the axis
is using a linear encoder for feedback.
Range (0.00000–30.00000)
0.47244 (inch) [Default]
MC_2111:
Y Number of Teeth
Motor
Gearing on the Y-axis motor side. Set
at 1 if there is no gear train.
Range (1–200000)
1 [Default]
MC_2112:
Y Number of Teeth
Ballscrew
Gearing on the Y-axis spindle side. Set
at 1 if there is no gear train.
Range (1–200000)
1 [Default]
MC_2113:
Y Motor Encoder
Phase
Invert Y-axis motor and encoder count
direction.
Invert
[Default]
Not invert
MC_2114:
Y DC Bus Voltage
Standard Y-axis value 560 (VDC). This
value can be changed is the supply
voltage deviates from the standard
voltage 3*400 (VAC).
Range (100–800)
560 (VDC) [Default]
MC_2115:
Y I2t Guarding
The square of the actual current is
integrated to monitor the actual power.
The integration lasts for 10 seconds
with feed motors and 150 seconds for
main spindle motors.
For the limit value, the nominal motor
current is used, multiplied by the factor
from MC_2115. Standard value is
100%.
Range (0–800)
0 Off [Default]
MC_2116:
Y Commutation Offset
Speed (rpm)
The Y-axis field angle offset (MC_2117)
operates from this speed.
Range (0–40000)
0 (rev/min) [Default]
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