HEIDENHAIN MANUALPLUS 620 - Page 49

49
Spindle and counter spindle
Overview
For machines featuring a higher level of automation, you can
position the spindle or counter spindle, or switch to C-axis
operation.
Display and
programming
Spindle speed:
•
Constant shaft speed: 1 to 99 999 rpm
•
Constant surface speed: 1 to 9 999 m/min
Spindle positioning Input resolution and display step: 0.001°
Spindle speed limi-
tation
•
The MANUALplus 620 monitors the actual speed.
•
Speed limiting can be adjusted via parameter and in the feed-
rate/spindle/tool menu (TSF menu).
Spindle override
50 to 150 %
Maximum spindle
speed
The maximum spindle speed is calculated as follows:
n
max
=
f 60000 rpm
NPP 5000 Hz
PWM
.
.
f
PWM
=
PWM frequency in Hz
NPP = Number of pole pairs
Gear ranges
A specific parameter set can be defined for each gear range.
The gears are switched via the PLC. Up to 10 gear ranges are
supported.
Operating mode
switchover
For controlling the spindle, different parameter sets can be saved
for closed-loop control (e.g. for wye or delta connections). You can
switch between the parameter sets in the PLC.
Position-
controlled spindle
The position of the spindle is monitored by the control.
Encoder HEIDENHAIN rotary encoder with sinusoidal voltage signals (1 V
PP
)
or EnDat interface.
C-axis machining
(option 55)
For milling, drilling and boring cycles, either the spindle or counter
spindle is switched to C-axis operation, or a separate C-axis drive is
activated.
Input resolution and display step: 0.001°
Opposing spindle
(option 132)
The Opposing Spindle option is necessary in order to work with
a counter spindle. The Spindle Synchronism option is included in
the Opposing Spindle option.