●
Instructions
The existing analog output positioning module AD70/A1SD70 is replaced with the Q Series QD73A1.
The existing AD70/A1SD70 external device connection connectors can be used, so there is no need to
change the wiring.
However, the connector orientation will be reversed when replacing the A1SD70.
The existing AD70/A1SD70 required an external 15 V DC ± current power supply, but the QD73A1 does not
need an external power supply.
(1) System configuration example
(2) Wiring for external device connection
Existing A Small Type Series
A Small
Type
CPU
A1SD70
A Large
Type
CPU
AD70 A Large Type
Series module
A Small Type
Series module
Q Series after replacement
Q
CPU
QD73A1
Q Series
module
Existing A Large Type Series
CPU module
Sequence
program
Electronic
gears
Deflection
counter
D/A
converter
Analog
voltage
Multiplication
Command pulse
Setting
data
Current
value
Data read/write
Parameter data
Positioning data
Zero return parameters
Positioning module AD70, A1SD70, QD73A1
Drive module
Servo motor
Speed
instruction
Interface
Feedback pulse
*1
*1
PLG
M
*2
Feedback pulse
Servo
amplifier
5.3 Replace analog output positioning module (AD70/A1SD70) with Q Series
Improve functionality of A Series analog output positioning module AD70, A1SD70 (upward
compatibility)
Use the Q Series module positioning unit to replace without concern of the effect onto the machine
system.
Solution and Benefit
The feedback pulse train from the pulse generator (PLG) can pass
through the drive unit (as shown with *1), or directly output to QD73A1
(as shown with *2). The route depends on the servo motor being used.
Refer to the manual for the servo motor and drive module being used
for information on selecting method *1 or *2.
‹
: Compatible, : Partial change required,
✕
: Not compatible
Item
Model
Compatibility
Precautions for
replacement
AD70
A1SD70
QD73A1
No. of control axes
1 axis
‹
Positioning data
Capacity
1 data
‹
Setting method
Follows sequence program
‹
Positioning
Mode
Position control mode (positioning, 2-speed trapezoid positioning)
Speed/position control changeover mode
‹
Method
Position control mode: absolute method/incremental method
Speed/position control changeover mode: incremental method
‹
Position
instruction
-2147483648 to 2147483647 (pulse)
(with 32-bit sign)
‹
Speed
instruction
1 to 400,000
(pulse/s)
1 to 4,000,000
(pulse/s)
‹
Specifications‥are‥enhanced.‥
(Upward compatibility)
Acceleration/
deceleration
Automatic trapezoid acceleration/deceleration
‹
Automatic
acceleration/
deceleration
Acceleration time: 2 to 9999 ms
Deceleration time: 2 to 9999 ms
‹
In-position
range
1 to 2047 pulse
1 to 20479 pulse
‹
Specifications‥are‥enhanced.‥
(Upward compatibility)
Backlash‥
compensation
None
‹
Error
compensation
function
None
‹
Speed instruction output
0 to ±10 V DC (setting range: +5 V to ±10 V)
‹
Positioning
feedback pulse
input
Pulse frequency
Open collector: 100 kpulse/s
TTL: 100 kpulse/s
Differential output: 100 kpulse/s
Open collector:
200 kpulse/s
TTL: 200 kpulse/s
Differential output:
1 Mpulse/s
‹
Specifications‥are‥enhanced.‥
(Upward compatibility)
Connected
encoder type
Open collector, TTL, differential output
‹
Multiplication
setting
Number of feedback pulse inputs can be multiplied to 4, 2, 1 or 1/2
‹
Zero return control
Provided (two types)
‹
Setting method changes
from hardware switch to CPU
module parameters.
The setting method is different,
but the functions are the same.
JOG operation
Provided
‹
Starting time
Absolute method: 4.4 ms
*1
Incremental method: 4.5 ms
*1
JOG operation: 4.3 ms
Zero return (near-point dog type): 4.4 ms
Zero point return (count type): 5.1 ms
Absolute method:
1.2 ms
*1
Incremental method: 1.2 ms
*1
JOG operation: 1.2 ms
Zero return (near-point dog
type): 1.2 ms
Zero point return (count
type): 1.2 ms
‹
Specifications‥are‥enhanced.‥
(Upward compatibility)
M function
None
‹
Internal current consumption
5 V DC 0.3 A
5 V DC 0.52 A
✕
The 5 V DC internal current
consumption must be re-
calculated.
External supply voltage,
current terminal block
+ 15 V DC 0.2 A
- 15 V DC 0.02 A
—
‹
External power supply in not
required.
Number of occupied I/O points
32 points
(No. of I/O slots: 1 slot
occupied)
(I/O assignment: 32 points
for special function module)
48 points
(No. of I/O slots: 2 slots
occupied)
(I/O‥assignment:‥first‥16‥
points for open slot
Last 32 points for special
function module)
48 points
(No. of I/O slots: 2 slots
occupied)
(I/O‥assignment:‥first‥16‥
points for open slot
Last 32 points for intelligent
function module)
‹
Weight
0.4 kg
0.20 kg
‹
*1: When using the 2-speed trapezoid with AD70/A1SD70, the starting time is 0.2 ms longer. When using the 2-speed trapezoid with QD73A1,
the starting time does not increase.
119
5.3 Replace analog output positioning module (AD70/A1SD70) with Q Series
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