Override Function - Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual

7.8

Override Function

The override function sets an override ratio of 0.0 to 300.0[%] in increments of 0.1[%] to be applied to the command speed
during positioning control. The speed command with the override ratio applied is the actual feed speed. For interpolation
operations or machine operations, the override ratio setting of the lowest axis is valid.
The types of controls where override function can be used are shown below.
: Usable, : Unusable
Control mode
Linear control
Circular interpolation control
Helical interpolation control
Fixed-pitch feed control
Continuous trajectory control
Speed control ()
Speed control ()
Speed-position switching control
Position follow-up control
Speed control with fixed position
stop
Simultaneous start
JOG operation
Manual pulse generator operation
*1
High-speed oscillation
Home position return
Speed-torque control
Pressure control
Machine control
Direct positioning control by Motion dedicated PLC instruction (M(P).SVSTD/D(P).SVSTD)
*2
G-code control
*1 In high-speed oscillation, the override is applied to the frequency.
*2 The override of axes assigned as G-code control axes is ignored. The override for G-code control is used.
Setting the override
The change of speed by override function is set in the override ratio setting device. The override ratio setting device sets
override data, and each axis in the command generation axis parameter.
Refer to override data for details on override data. (Page 210 Override Data)
Refer to the following for details of the command generation axis parameter.
MELSEC iQ-R Motion Controller Programming Manual (Advanced Synchronous Control)
• Set the value of the override ratio to the device set as the override ratio setting device.
Name
Override ratio setting device
7 AUXILIARY AND APPLIED FUNCTIONS
462
7.8 Override Function
Servo instruction
ABS-1 ABS-2 ABS-3
INC-1 INC-2 INC-3
ABS circular INC circular
ABS helical INC helical
FEED-1 FEED-2 FEED-3
CPSTART1 CPSTART2 CPSTART3 CPSTART4
VF VR
VVF VVR
VPF VPR VPSTART
PFSTART
PVF PVR
START
OSC
ZERO
Setting range
-1
0 to 3000(10 [%])
Usable/unusable
Servo axis

ABS-4
INC-4



















Command
generation axis



















