840 HEIDENHAIN Technical Manual iTNC 530 HSCI
The feed rate is significantly lower for manual operation than for rapid traverse:
Enter in MP1020 a feed rate for manual operation.
The programmed feed rate and the current path feed rate are saved in D360
and D388 in mm/min. In the manual operating modes, the highest axis feed of
all axes is stored in D388.
The maximum possible feed rate depends on the encoder being used.
v
max
[mm/min] = P [mm] · f
i
[kHz] · 60
v
max
= Maximum traverse speed
P = Signal period of the encoder
f
i
= Input frequency of the encoder input,
see "Encoder signals" on page 608 and
see "Encoder connections" on page 296.
Digital axes:
For digital axes, the maximum feed rate also depends on the number of pole
pairs in the drive motor and the pitch of the ball screw.
Analog axes:
In MP1050.x, enter the desired analog voltage for rapid traverse.
Adjust the rapid traverse feed rate (v
max
) with the analog voltage at the
servo amplifier.
Module 9140 Set axis-specific feed-rate limit
With Module 9140 you can set axis-specific feed-rate limits. The limits are
saved in sequential double words for each axis. The address of the starting
double word must be given. Along with a feed-rate value (≥ 0), the following
limitations are possible in the double words:
–1: Maximum feed rate (a previous limitation via Module 9140 is rescinded)
–2: Axis-specific rapid traverse from MP1010.x (for multi-axis interpolation,
the contouring feed rate is limited to the slowest respective value of the
participating axes)
–3: Axis-specific manual feed rate from MP1020.x (for multi-axis
interpolation, the contouring feed rate is limited to the slowest respective
value of the participating axes)
v
max
[mm/min] =
60 000
Number of pole pairs
[1/min] · ball screw pitch [mm] ·
f
PWM
5000
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