CNC Setup Utility Manual
P/N 70000490C - Machine Constants
All rights reserved. Subject to change without notice.
10-December-04
2-39
Table 2-2, Machine Constants Setup
(Continued)
Machine Constant
Parameter
Function Settings
MC_2909:
Spindle Position
Encoder Phase
Moving the spindle-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_2913:
Spindle Motor
Encoder Phase
Invert spindle-axis motor and encoder
count direction.
Invert
[Default]
Not invert
MC_2914:
Spindle DC Bus
Voltage
Standard spindle-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_2915:
Spindle 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_2915. Standard value is
100%.
Range (0–800)
0 Off [Default]
MC_2916:
Spindle Commutation
Offset Speed (rpm)
The U-axis field angle offset (MC_2917)
operates from this speed.
Range (0–40000)
0 (rev/min) [Default]
MC_2917:
Spindle Commutation
Offset Angle (deg)
The spindle-axis field angle offset is
interpolated between the value zero at
MC_2916 speed and the MC_2917
value at Nmax (maximum) speed
(velocity).
Range (0–360)
0 (degrees) [Default]
MC_2918:
Spindle Velocity Filter
The spindle-axis velocity filter is suitable
for damping high-frequency spurious
oscillations (>600 Hz).
0
No filter [Default]
1 1
st
order filter (spurious
oscillations less than (<)
approximately 700 Hz)
2 2
nd
order filter (spurious
oscillations greater than (>)
approximately 700 Hz)
(Continued…)
