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Term
BALL SCREW
MASTER AXIS
REAL-TIME AUTO TUNING
LIMIT SWITCH
RESOLVER
WARNING
POSITION LOOP GAIN
780
This is a type of screw, with balls lined up in the threads like ball bearings. This reduces backlash, and enables
rotation with little force.
When carrying out interpolation operations, this is the side on which the positioning data is executed in priority.
For example, when positioning with the X axis and Y axis, the side with the largest movement distance will
become the master axis, and the speed will follow that axis. The slave axis speed will be ignored.
Refer to the term "AUTO TUNING".
This is a switch set to stop a moving object at both ends, etc., of a movement device for safety reasons.
A circuit is created in which the moving body itself presses against the switch to activate the contact and forcibly
shut the power OFF. For example, pressing on the actuator in the drawing below activates the internal
microswitch. There are various other types.
Push plunger
Rubber cap
Lead
NC NO COM
This device detects the angle by resolving the two voltages of the analog input.
Also called a 2-phase synchro. For a 1-phase voltage input, the axis rotation angle is converted into a
perpendicular 2-phase voltage (analog voltage) and output.
Movement distance
for one resolver rotation
Toothed gear
Position detection value
Resolver
Motor
(addresses 0 to 4095, converted to digital)
A warning is output as a warning code in when an abnormality is detected that is not serious enough to require
cancellation or stoppage of the positioning operation. Warnings are handled differently than errors.
This is the ratio of the deviation counter droop pulses to the command pulse frequency.
Command pulse frequency
Position
=
loop gain
Droop pulses
The position loop gain can be set with the drive unit. Raise the gain to improve the stopping accuracy. However,
overshooting will occur if the position loop gain is raised too far, and the operation will become unstable. If the
position loop gain is lowered too far, the machine will stop more smoothly but the stopping error will increase.
Description
Female thread
Male thread
Actuator
Case
Microswitch
(1/s)
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Troubleshooting
