HEIDENHAIN iTNC 530 HSCI - Analog and Digital Closed-Loop Spindle Control

952 HEIDENHAIN Technical Manual iTNC 530 HSCI
6.12.3 Analog and digital closed-loop spindle control
For both analog and digital output of the nominal speed command you can
program speeds of from 0 to 99 999.999 min
–1
.
The maximum controllable spindle speed is:
If the load increases, the spindle speed is corrected until the maximum current
is attained. If the load continues to increase in spite of the maximum current,
the spindle speed is reduced. For the maximum current, the value from either
the motor table or the power-module table of the drive (whichever is lower)
applies.
If in MP3010 you have selected the output of the nominal speed value, M4003
is set. The programmed speed is saved in D356, the nominal speed value in
W320 and the actual speed value in W322. In addition, the nominal speed
value is saved in D364 and the actual speed value in D368, since speeds above
32 767 min
–1
cannot be represented in words W320 and W322.
The current spindle speed is already available in the PLC word W322 or D368
before the control voltage is switched on. This makes it possible to identify a
spindle coasting to a stop after a restart.
The PLC double word D372 makes the maximum spindle speed including the
spindle potentiometer available to the PLC program. This makes it possible,
for example, to already acknowledge within the ramp the M functions for
switching on the spindle by comparing the actual and maximum speeds.
With D604 you can limit the possible spindle speed through the PLC. To
ensure compatibility, D604 is preassigned with 99 999 999 after control
switch-on or after an interruption in the PLC scan.
Analog spindles:
The nominal speed value of the motor is output as an analog dc voltage of
±10 V at connection X8 or X9.
Digital spindles:
The nominal speed value is transferred to the internal speed controller.
Set Reset
M4003 Nominal speed value output
analog or digital (MP3010 = 3 to 8)
NC NC
D356
Programmed speed [0.001 min
–1
]
NC NC
D364
Nominal speed value [min
–1
]
NC NC
W320
Nominal speed value [min
–1
]
NC NC
D368
Actual speed value [min
–1
]
NC NC
D372 Maximum spindle speed including spindle
override [min
–1
]
NC NC
W322
Actual speed value [min
–1
]
NC NC
D604 Maximum possible spindle speed PLC NC/PLC
No. of pole pair
80 000