Mitsubishi FX3U-20SSC-H User Manual page 129

FX -20SSC-H Positioning Block User's Manual
3U
2. Converted pulse data
Enter data within the setting range of converted pulse data, when setting ranges overlap. The equation for
conversion is as follows.
1) Travel distance
Travel distance in converted pulse data (PLS) =
Travel distance (µm, 10
2) Operation speed
Operation speed in converted pulse data (Hz) =
Operation speed (cm/min, inch/min, 10deg/min) × 10
Pulse rate
Feed rate
Position data
magnification
Travel distance
Operation speed
setting
Servomotor rotation speed and operation speed (converted pulse data)
Do not exceed the maximum rotation speed of the servomotor when specifying the operation speed (including
the maximum speed, jog speed and zero return speed). The servomotor rotation speed is calculated from the
speed (converted pulse data) as follows.
Servomotor rpm (r/min) =
The converted pulse data of operation speed (Hz) × 60 / the resolution per revolution of servomotor
Servo amplifier
MR-J3- B, MR-J3W- B, MR-J3- BS
3. Error
Supposing that the pulse rate be A, feed rate be B, and relative travel distance be C, C × (A/B) is the number
of pulses output from 20SSC-H.
No command error occurs as long as (A/B) is an integer. C × (A/B) does not have to be an integer.
However, if C × (A/B) is not an integer, repetitive operation of relative movement causes an accumulated
error in the current address. In absolute address operation, an error within 1 pulse occurs with the calculation
result rounded off, but it does not cause an accumulated error.
In addition, an accumulated error does not occur in the motor system of units.
4. Maximum speed restriction
To specify speed data in the mechanical system of units, enter data in the range between 1 and
50,000,000Hz in converted pulse data.
inch, mdeg) × position data magnification × (pulse rate / feed rate)
-4
X-axis
BFM #14005,#14004
BFM #14007,#14006
Operation parameter BFM #14000 b5,b4
Target address 1 BFM #501,#500
Target address 2 BFM #505,#504
Operation speed 1 BFM #503,#502
Operation speed 2 BFM #507,#506
Resolution per revolution or servomotor (PLS/REV)
7 Before Starting Positioning Operation
7.10 Precautions for using the user units (mechanical or composite
4 × (pulse rate / feed rate) / 60
BFM Number
Y-axis
BFM #14205,#14204
BFM #14207,#14206
BFM #14200 b5,b4
BFM #601,#600
BFM #605,#604
BFM #603,#602
BFM #607,#606
262144
Data type
Positioning parameters
Positioning parameters
Positioning parameters
Control data
Control data
Control data
Control data
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