TOMATECH TAC-100XT User Manual

TOMATECH AUTOMATION
In order to ensure the CNC positioning precision and speed index, it is suggested that the
CNC
electronic gear ratio is set to 1:1 and the electronic gear ratio calculated is set to the digital
servo
when matching with digital servo.
When matching with the step drive, choose the drive unit with step division function as
possible
as it can, and properly select mechanical transmission ratio. The 1:1 electronic gear ratio
should be
ensured to avoid the excessive difference between the numerator and the denominator of
this CNC
electronic gear ratio.
4.4 ACC&DEC Characteristic Adjustment
Adjust the relative CNC parameters according to the factors such as the drive unit, motor
characteristics and machine load:
Data parameter No.022: rapid traverse rate of each axis;
Data parameter No.023: linear ACC&DEC time constant of each axis rapid traverse rate;
Data parameter No.026: X axis exponential ACC&DEC time constant in threading;
Data parameter No.028: exponential ACC&DEC start/termination speed in threading;
Data parameter No.029: exponential ACC&DEC time constant in cutting and manual
feeding;
Data parameter No.030: exponential ACC&DEC start/end speed in cutting feeding;
Data parameter No.041: ACC&DEC start/termination speed in manual feeding;
BIT5 (SMZ) of bit parameter No.007: for smooth transition between cutting feedrates of
adjacent
blocks
The larger the ACC&DEC time constant is, the slower the ACC&DEC is, the smaller the
machine
movement impact and the lower the machining efficiency is, and vice versa.
Chapter 4 Machine Debugging methods and Modes
417
Ⅲ Connection
If ACC&DEC time constants are equal, the higher the ACC&DEC start/end speed is, the
faster
the ACC&DEC is, the bigger the machine movement impact and the higher the machining
efficiency
is, and vice versa.
The principle for ACC&DEC characteristic adjustment is to properly reduce the ACC&DEC
time
constant and increase the ACC&DEC start/end speed to improve the machining efficiency
on the
condition that there is no alarm, motor out-of-step and obvious machine impact. If the
ACC&DEC time

TOMATECH TAC-100XT Specifications

General

Brand	TOMATECH
Model	TAC-100XT
Category	Control Systems
Language	English