Appendix - 23
MELSEC-
PPENDICES
Appendix 9 Comparisons with conventional positioning modules
Appendix 9.1 Comparisons with AD71 (S1), AD71S2 (A1SD71S2) models
The following shows comparisons with the conventional positioning modules AD71
(S1) and AD71S2 (A1SD71S2), centered on the AD75 specifications.
Model
Item
A1SD75P1-S3
AD75P1-S3
A1SD75P2-S3
AD75P2-S3
A1SD75P3-S3
AD75P3-S3
AD71 (S1)
A1SD71S2
AD71S2
No. of control axes 1 2 3 2
No. of positioning data items
600/axis *
1
400/axis
2-axis linear interpolation
Interpolation
functions
2-axis circular interpolation
Position control
Speed control
Positioning
methods
Speed/position
changeover control
Zero point return function (6 types)
JOG operation
Manual pulse generator function
Automatic trapezoidal
acceleration/deceleration
Acceleration/
deceleration
processing
S-curve
acceleration/deceleration
Acceleration/deceleration time
Acceleration time and deceleration time setting
possible (4 patterns each)
Acceleration/deceleration time
same
Compensation Electronic gears, backlash compensation Backlash compensation
Error display 17-segment display Error LED
History data storage
(Start, error, warning)
Provided (4 types, 16 items/axis) None
Data storage destination
Flash ROM
(battery-less backup)
Buffer memory
(battery backup)
No. of occupied input/output points 32 32
32 (48) *
2
No. of module occupied slots 1 1
1 (2) *
3
AD71TU
AD75TU
A6GPP, A6PHP
Peripheral
devices
(data setting,
etc.)
DOS/V personal computer
: Possible, : Not possible
REMARK
*
1
Up to 100 data items/axis of the positioning data No. 1 to 100 can be set using the AD75 buffer
memory. Buffer memory positioning data is not backed up.
*
2
The A1SD71S2 has 48 input/output points.
*
3
The A1SD71S2 occupies 2 slots.
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