Mitsubishi FX3U-20SSC-H - Page 131

7 Before Starting Positioning Operation
125
FX3U-20SSC-H Positioning Block User's Manual
1
Introduction
2
System configuration
3
Example Connection
4
Installation
5
Wiring
6
Memory configuration and data
7
Before starting positioning control
8
Manual control
9
Positioning Control
10
Table Operation
7.11 Cautions for Positioning Operation
*1. Set approximate S-shaped acceleration/deceleration or trapezoidal acceleration/deceleration in
"acceleration/deceleration mode."
2. Interrupt 1-speed positioning operation
(Ver. earlier than 1.10, or BFM#519, #619 b6=OFF in Ver. 1.10 or later)
If the time needed for the travel distance (target address 1) is shorter than the deceleration time, the pulse
output stops at the target address 1.
If the travel distance is zero, immediate stop occurs when interrupt input INT0 turns ON.
*2. For the relation between the time for the actual deceleration and the specified time for desired
deceleration, refer to the following.
→ Refer to Section 7.2
*3. Set approximate S-shaped acceleration/deceleration or trapezoidal acceleration/deceleration in
"acceleration/deceleration mode."
Maximum speed BFM #14009, #14008 BFM #14209, #14208 Positioning parameters
Acceleration time BFM #14018 BFM #14218 Positioning parameters
Deceleration time BFM #14020 BFM #14220 Positioning parameters
Acceleration/deceleration
mode
*1
Operation parameter BFM #14000 b11 BFM #14200 b11 Positioning parameters
Acceleration time 2 (Ver.1.30 or later) BFM #14108 BFM #14308 Positioning parameters
Deceleration time 2 (Ver.1.30 or later) BFM #14110 BFM #14310 Positioning parameters
BFM Number
Data type
X-axis Y-axis
Target address 1 BFM #501,#500 BFM #601,#600 Control data
Operation speed 1 BFM #503,#502 BFM #603,#602 Control data
Acceleration/deceleration
time change command
(Ver.1.30 or later)
Operation command 2 BFM #519 b5 BFM #619 b5 Control data
Mode selection for the
Interrupt 1-speed
constant quantity feed
Operation command 2 BFM #519 b6 BFM #619 b6 Control data
X-INT0 (input terminal) - - Input terminal
Y-INT0 (input terminal) - - Input terminal
Maximum speed BFM #14009,#14008 BFM #14209,#14208 Positioning parameters
Acceleration time BFM #14018 BFM #14218 Positioning parameters
Deceleration time BFM #14020 BFM #14220 Positioning parameters
Acceleration/deceleration
mode
*3
Operation parameter 1 BFM #14000 b11 BFM #14200 b11 Positioning parameters
Acceleration time 2 (Ver.1.30 or later) BFM #14108 BFM #14308 Positioning parameters
Deceleration time 2 (Ver.1.30 or later) BFM #14110 BFM #14310 Positioning parameters
BFM Number
Data type
X-axis Y-axis
Interrupt input (INT0)
Speed
Desired
deceleration
time
Approximate S-shaped control
Trapezoidal control
Operation speed 1
Start
Target address 1
Time
Traveling time < desired deceleration time
The time to stop is slightly earlier because
deceleration under the approximate S-shaped
control is slower than that of trapezoidal control,
while the travel distance is almost the same as
that of trapezoidal control.
*2
*2