Mitsubishi Melsec-Q QD75D1, User Manual

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Appendix - 130
MELSEC-Q
APPENDICES
RESOLVER
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
Motor
Position detection value
Resolver
(addresses 0 to 4095, converted to digital)
RLS SIGNAL (reverse limit signal)
This is the input signal that notifies the user
that the limit switch (b contact configuration,
normally ON) installed at the lower limit of the
positioning control enabled range is activated.
The positioning operation stops when the RLS
signal turns OFF (non-continuity).
ROTARY TABLE
A round table on which the workpiece is
placed. Positioning control is carried out while
rotating the workpiece in a 360° range.
S-CURVE
ACCELERATION/DECELERATION
In this pattern, the acceleration and
deceleration follow a sine curve, and the
movement is smooth. The S-curve ratio can be
set from 1 to 100%.
Acceleration Deceleration
SERVO AMPLIFIER
Refer to the term "DRIVE UNIT".
SERVO LOCK
In positioning using a servomotor, stepping
motor, etc., working power is required to hold
the machine at the stop position.
(The position will be lost if the machine is
moved by external power.)
This kind of state is called servo lock or servo
lock torque.
M
Table
Motor holds the position
at the stop position.
SERVO ON
The servo amplifier will not operate if the servo
amplifier is in a normal state and this servo ON
signal is OFF.
QD75
READY
Servo ON
Encoder
Motor
PLG
Servo
amplifier
SERVOMOTOR
A motor that rotates true to the command.
Servomotors are highly responsive, and can
carry out frequent high-speed and high-
accuracy starts and stops.
DC and AC types are available, as well as
large-capacity motors. A pulse generator
accessory for speed detection is common, and
feedback control is often carried out.
SETTING UNIT
This is one setting item of the positioning
reference parameters. The unit to be used is
designated as mm, inch, degree, or pulse.