962 HEIDENHAIN Technical Manual iTNC 530 HSCI
If bit 5 of MP7620 is set, the spindle override potentiometer is used as rapid
traverse override potentiometer. The value set with the potentiometer will
then be entered by the NC in words W496 and W752 (if bit 5 = 1). The value
in word W752 can be changed by the OEM and will be used by the NC. The
entry in MP3310 for limiting the spindle override also applies for the rapid
traverse override. The value range for W496 and W752 is independent of the
setting in MP 7620 bit 3 for the "nonlinear curve." The potentiometer
designation on the keyboard unit or the machine operating panel must match
the setting in MP7620 bit 5 (adhesive plate for rapid traverse override ID
350 430-02)!
The OEM must then use vacant keys on the machine operating panel for the
spindle override, for example. The OEM can specify a value for the spindle
override in word W764 of the PLC. The value is used by the NC.
If bit 8 of MP7620 is set, the error message "Override potentiometer" will be
displayed if the feed-rate or rapid-traverse override is set to 0% at the start of
an axis movement and the axis can therefore not be moved.
MP3310.0-1 Limit for spindle override
Input: 0 to 150 [%]
MP3310.0 Upper limit
MP3310.1 Lower limit
MP3515.0-7 Maximum spindle speed for gear ranges 1 to 8
Input: 0 to 99 999.999 [min
–1
]
Only use MP7620 bit 5 in accordance with the keyboard unit or the machine
operating panel used. The potentiometer designation must match the
function you set in MP7620 bit 5.
An incorrect or missing identification of the potentiometers can lead to
errors during operation and even to property damage or personal injury!
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