8 Manual Control
8.3 Manual pulse generator operation
148
FX
3U
-20SSC-H Positioning Block User's Manual
• Pulse generator magnification response (Ver.1.10 or later)
For the relationship between the response and input pulses/output pulses, refer to the figure below.
The response setting does not affect the output pulse frequency and pulse quantity.
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.
BFM Number
Description
X-axis
Y-axis
MPG response
BFM #528
BFM #628
Sets the MPG response (Ver.1.10 or later)
The set value can be changed even during operation.
•
If the set value is smaller, the follow-up capability of output pulses to manual
pulse generator inputs is higher.
However, note that the machine may be overloaded if the speed is changed
drastically.
•
If the set value is larger, the follow-up capability of output pulses to manual
pulse generator inputs is lower, but the machine gives smoother motions
(outputs).
Caution
A-phase
B-phase
2-phase pulses
Frequency within 100kHz
Input pulses
(frequency, pulse quantity)
Manual pulse generator
20SSC-H
Servo
amplifier
AC Servo
motor
Command
(output
pulses)
Deviation
counter
+
-
Manual pulse
generator input
magnification
Numerator
Denominator
1
Response
*1
*1. Set it in "MPG response" in the control data.
Speed
Time
Manual pulse generator input
Output pulse when a small value is set in "MPG response"
Output pulse when a large value is set in "MPG response"