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TECHNICAL BULLETIN
[Issue No.] FA-A-0060-A
[Page] 3/54
[Title] Procedures for Replacing Positioning Module AD71 with QD75
[Date of Issue] April '09 (Ver.A: May, '10)
[Relevant Models] QD75P /QD75D
1. Functional comparison between AD71 and QD75
1.1 Table of functional comparisons
The following table shows functional comparisons between the AD71 and QD75. For programs, refer to Chapter 7.
: Compatible (no restrictions), : Compatible (with restrictions), : No alternative
Function
No. of control axes
Manual pulse generator operation *1
Applicable manual pulse generator
AD71
AD71S2
AD71S7
AD71
AD71S1
A1SD71-S2 A1SD71-S7
2 axes
Available
Available
−
HD52B (Mitsubishi Electric Corp.),
OSM-01-2(C) (Nemicon).
Positioning
Position control
mode
JOG operation
Zero point return
Available
Available
1-time positioning (End)
Available
n-time positioning (Continued)
Available
Continue positioning, while
changing speed (Pattern change)
Linear interpolation
Speed/Position control switching mode
Speed control mode
No. of positioning data
−
−
Available
Available
Available
400/axis
−
−
Acceleration/Deceleration time
Same for Accel. and Decel. times (1 pattern)
Backlash compensation
Error compensation
M code
M code comment display
Available
Available
Available
Available
Data storage
SRAM (with battery backup)
No. of occupied slots
I/O signal lines
Available
32 points/slot
Upper/Lower limit switch signal
(FLS/RLS input signal)
START signal (Output signal)
Pulse output (Output signal)
Other signals
Current consumption
AD71S2, AD71S7
: 32 points/slot
A1SD71-S2, 1SD71-S7
: 48 points/2 slots
N/A
Available
Open Differentia
Open collector
collector
l driver
Available
1.5A (0.8A for A1SD71-S2/S7)
QD75
QD75P2
QD75D2
2 axes
Available
MR-HDP01
(Mitsubishi Electric
Corp.)
Available
Available
Available
(independent
positioning)
Available
(continuous positioning)
Available
(continuous path)
Available
Available
Available
600/axis
Individual setting for
Accel./Decel. time
(4 patterns for each)
Available
N/A
Available
N/A
Flash ROM
(without battery)
32 points/slot
Available
N/A
Open
Differential
collector
driver
Available
0.46A
0.56A
Compatibility
Usable products are
different between
AD71 and QD75.
*2
*3
*4
External wiring is
required for QD75.
*5
−
*1: A manual pulse generator is equipped with a module, QD75.
For further details, refer to Section 11.4 “Manual pulse generator operation” of the Type QD75P/QD75D Positioning Module User's Manual.
*2: The QD75 substitutes electronic gears.
*3: No. of writes to flash ROM is up to 100,000.
*4: Configure the StartXY address in the I/O assignment tab of the PC parameter to keep the address unchanged, when replacing the A1SD71-S2 and
A1SD71-S7.
*5: Use an output module and create a ladder program that enables the signal. (Refer to Section 2.2 “Servo amplifier connection example (10)”)
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