Current Manual Pulse Input Value; Input Frequency Of Manual Pulse Generator - Mitsubishi FX3U-20SSC-H User Manual

FX -20SSC-H Positioning Block User's Manual
3U
• The operation speed is proportional to the frequency of pulse strings from the manual pulse generator
according to the manual pulse input magnification.
In addition, the override setting is invalid.
Manual pulse generator
Frequency within 100kHz
A-phase
B-phase
- The following equation provides output pulses to 20SSC-H.
Input pulses (frequency, pulse quantity)
from manual pulse generator
- If the pulse generator magnification is smaller than 1/1, one pulse is output for every multiple input
pulse.
Therefore, the frequency of output pulses is low while the pulse quantity is small.
If the manual pulse input magnification is larger than 1/1, multiple pulses are output for each input pulse.
Therefore, the frequency of output pulses is high while the pulse quantity is large.
If the manual pulse input magnification is larger than 1/1, the motor rpm for each input pulse becomes
larger, causing rough positioning accuracy.
• Pulse generator magnification response (Ver.1.10 or later)
- The response is faster as the set value is smaller.
- The set value can be changed even during operation.
Caution
An error may occur when the response is drastically changed from low to high or from high to low while the
manual pulse generator is operating.
• One manual pulse generator can control both the X- and Y-axes by setting the manual pulse generator
input selection (Ver. 1.10 or later).
- The table below shows set values of the manual pulse generator input selection.
Set value
8.3.2

Current manual pulse input value

The current number of total input pulses from the manual pulse generator is stored.
8.3.3

Input frequency of manual pulse generator

The frequency of the manual pulse generator inputs is stored.
The sign of an increasing count is positive (+), while the sign of a decreasing count is negative (-).
82
2-phase pulses
Input pulses x
= output pulses
X
0 Operates the X-axis by X-axis input, and operates the Y-axis by Y-axis input.
1 Operates the X-axis by X-axis input. (Y-axis input is not used.)
2 Operates both the X- and Y-axes by X-axis input.
20SSC-H
manual pulse input
magnification (numerator)
manual pulse input
magnification (denominator)
manual pulse input
magnification
Contents of operation of each axis
8 Manual Control
8.3 Manual pulse generator operation
Servo amplifier
drive unit
Command
Manual pulse input
magnification (numerator)
Manual pulse input
magnification (denominator)
Motor