Panasonic AFP7MC16EC, User Manual

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9.6 Electronic Cam Function
9-53
9.6.5 Advance Angle Correction Function

What is advance angle correction function?
"Advance angle correction function" is a function to correct the delay in the response of a
machine system connected to an electronic cam output or the delay in a PLC arithmetic
processing time. This function is used to advance the input phase to electronic cams for
correcting the delay in the response of cam output axes.
The advance angle correction automatically increases a phase lead in proportion to the speed
of the master axis; therefore, it is also suitable for correcting deviation in proportion to the
speed. This function is available since FP7 MC Unit Ver. 1.20.

Specification of advance angle correction amount
Advance angle correction amounts are specified for each slave axis using a tool software or
user program.
By setting "advance angle correction reference speed" and "advance angle correction
reference amount", a correction amount is automatically calculated using an active "master
axis input speed". The advance angle correction amount is calculated by the following formula.
Advance angle
correction amount
Master axis input
speed information
Advance angle correction reference amount
[UM63F96-UM63F97]
Advance angle correction reference speed
[UM63F98-UM63F99]
* Master axis input speed information: Speed information after clutch control
= ×

Internal processing of advance angle correction
The phase of the master axis which will be a reference of slave axis correction is obtained as
operation data for according to the set values of advance angle amount. A correction amount
for each slave axis is calculated based on this value as a reference.
t
t
Input axis phase
Output axis displacement
Not corrected
Advance angle
correction amount
Advance the output of slave axes!
Corrected
Not corrected
Corrected