9 - 14
Chapter 9 Major Positioning Control
[LD77MS4 operation example]
OFF
ON
OFF
ON
OFF
ON
OFF
ON
11
11
11
01
00
V
Dwell time
t
Da. 1 Operation pattern
Start complete signal
BUSY signal
Positioning complete signal
Positioning start signal
Positioning
[Y10, Y11, Y12, Y13]
[X10, X11, X12, X13]
Dwell time
[XC, XD, XE, XF]
[X14, X15, X16, X17]
(Note): Refer to Section 3.3 for input/output signal of LD77MS16.
Fig. 9.5 Operation for the front-loading speed switching mode
3) Speed switching condition
If the movement amount is small in regard to the target speed, the
current speed may not reach the target speed even if
acceleration/deceleration is carried out. In this case, the machine
is accelerated/decelerated so that it nears the target speed.
If the movement amount will be exceeded when automatic
deceleration is required (Ex. Operation patterns "00", "01", etc.),
the machine will immediately stop at the designated positioning
address, and the warning "Insufficient movement amount"
(warning code: 513) will occur.
[When the speed cannot change over to
the P2 speed in P1]
For the following relation of the speed
P1 = P4, P2 = P3, P1 < P2
[When the movement amount is small during
automatic deceleration]
The movement amount required to carry out the
automatic deceleration cannot be secured, so the
machine immediately stops in a speed
0
status.
P1
P2
P3
P4
Positioning address
Pn
Pn+1
Summary of Contents for MELSEC-L Series
Page 2: ......
Page 30: ...MEMO ...
Page 70: ...2 10 Chapter 2 System Configuration MEMO ...
Page 83: ...3 13 Chapter 3 Specifications and Functions MEMO ...
Page 103: ...3 33 Chapter 3 Specifications and Functions MEMO ...
Page 107: ...3 37 Chapter 3 Specifications and Functions MEMO ...
Page 111: ...3 41 Chapter 3 Specifications and Functions MEMO ...
Page 115: ...3 45 Chapter 3 Specifications and Functions MEMO ...
Page 140: ...4 22 Chapter 4 Installation Wiring and Maintenance of the Product MEMO ...
Page 253: ...5 113 Chapter 5 Data Used for Positioning Control MEMO ...
Page 342: ...5 202 Chapter 5 Data Used for Positioning Control MEMO ...
Page 438: ...7 20 Chapter 7 Memory Configuration and Data Process MEMO ...
Page 440: ...MEMO ...
Page 485: ...9 25 Chapter 9 Major Positioning Control MEMO ...
Page 594: ...9 134 Chapter 9 Major Positioning Control MEMO ...
Page 624: ...10 30 Chapter 10 High Level Positioning Control MEMO ...
Page 656: ...11 32 Chapter 11 Manual Control MEMO ...
Page 690: ...12 34 Chapter 12 Expansion Control MEMO ...
Page 798: ...13 108 Chapter 13 Control Sub Functions MEMO ...
Page 866: ...14 68 Chapter 14 Common Functions MEMO ...
Page 884: ...15 18 Chapter 15 Dedicated Instructions MEMO ...
Page 899: ...16 15 Chapter 16 Troubleshooting MEMO ...
Page 1036: ...Appendix 88 Appendices MEMO ...
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