WEIHONG Lambda 5S Series User Manual

上海维宏电子科技股份有限公司
Weihong Electronic Technology Co., Ltd.
- 66 - Specialized, Concentrated, Focused
signal deceleration.
4) In terms of the retracting distance and across distance calculated, calculate the actual retracting
distance, and use this actual distance to make the machine move and stop at place F, keeping it free
from the signal source.
5.2 Pulse Equivalent Adjustment
Pulse equivalent (p): the moving distance of workbench or rotation degree of rotary axis
corresponding to one pulse sent by CNC device, the minimum available distance controlled by CNC
system as well.
The smaller the pulse equivalent is, the higher the machining precision and surface quality will be.
The larger, the faster feedrate will be. Therefore, lower pulse equivalent should be set under the
condition of meeting the demand of feedrate. The relationship between max. feedrate and pulse
equivalent is as following:
Max. Feedrate= pulse equivalent X 60 X frequency
For example, the hardware frequency of Lambda series CNC system is 1MHz and provided the
pulse equivalent is 0.001 mm/p, then:
Max. feedrate=0.001 X 60 X 1000000= 60m/min
Mechanical deceleration ratio (m/n): the ratio of reducer input speed to output speed, equal to the
ratio of the teeth number of driven wheel to that of driving wheel. When applied in CNC machines, it
specifies the ratio of motor speed to screw speed.
reducer input speed teeth number of driven wheel motor speed
Mechanical deceleration ratio
reducer output speed teeth number of driving wheel screw speed
  
Pitch (d): The axial distance between the corresponding points of two adjacent teeth on the threads.
The calculation of pulse equivalent varies with different motor systems.
 Stepping Motor
In general, firstly set the subdivision and then calculate the pulse equivalent. You can also set the
pulse equivalent before calculating subdivision. Their relationship can be shown as:
360dm
x
pn 
  
Hereinto, p stands for pulse equivalent, x represents subdivision of stepping motor whileθ refers to
stepping angle. Therefore,
screw pitch
Pulse equivalent
360
subdivision mechanical deceleration ratio
stepping angle



WEIHONG Lambda 5S Series Specifications

General

Brand	WEIHONG
Model	Lambda 5S Series
Category	Controller
Language	English