
B–63833EN–1/02
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
325
An override value is set with parameter No. 1712. An override value
is valid even for dry run and F1–digit feed specification.
In the feed per minute mode, the actual feedrate is as follows:
F × (inner corner automatic override) × (feedrate override)
For internally offset circular cutting, the feedrate on a programmed path
is set to a specified feedrate (F) by specifying the circular cutting feedrate
with respect to F, as indicated below. This function is valid in the cutter
compensation mode, regardless of the G62 code.
F
Rc
Rp
Rc : Cutter center path radius
Rp : Programmed radius
It is also valid for the dry run and the F1–digit feed command.
RC
RP
Programmed path
Cutter center
path
Internal circular cutting feedrate change
If Rc is much smaller than Rp, Rc/Rp80; the tool stops. A minimum
deceleration ratio (MDR) is to be specified with parameter No. 1710.
When Rc/Rp
xMDR, the feedrate of the tool is (F×MDR).
CAUTION
When internal circular cutting must be performed together
with automatic override for inner corners, the feedrate of the
tool is as follows:
(inner corner override)
× (feedrate override)
F
Rc
Rp
1710
Minimum deceleration ratio (MDR) of the inner circular cutting
rate in automatic corner override
[Data type] Byte
[Unit of data] %
[Valid data range] 1 to 100
Set the minimum deceleration ratio (MDR) in changing the inner circular
cutting feedrate by automatic corner override.
D Override value
D Internal circular cutting
feedrate change
Parameter