A1Sd61; Performance Specifications Comparison - Mitsubishi Electric MELSEC L Series Manual

6
HIGH-SPEED COUNTER MODULE REPLACEMENT

6.2 A1SD61

6.2.1 Performance specifications comparison

(1) Comparison between A1SD61 and LD62
Item
Number of occupied I/O points
Number of channels
Counting speed switch setting
Phase
Count input
Signal level
signal
(A, B)
Counting speed
(maximum)
Counting range
Type
Minimum count pulse width, duty ratio: 50%
(200KPPS)
Counter
(100KPPS)
(50KPPS)
* 1 A program used before replacement can be utilized by setting the start I/O signal numbers of the modules connected to the
right of the LD62 so that they can be the same as that of the module before replacement. (Set the start number at "Start XY"
of the I/O assignment tab. The number of occupied points of the LD62 cannot be changed.)
* 2 The rise/fall time of a pulse affects the counting speed. Countable counting speeds are as follows.
Counting a pulse greater than t = 50µs may result in a miscount.
(For the LD62)
6
- 6
A1SD61
32 points
(I/O assignment: special 32 points)
1 channel
50K 10K
1-phase input, 2-phase input
5VDC
12VDC
24VDC
1-phase
50KPPS 10KPPS
input
2-phase
50KPPS 7KPPS
input
32-bit signed binary (-2147483648 to 2147483647)
UP/DOWN preset counter + ring counter function
–
–
20
10 10
(Unit : s)
(1- and 2-phase input)
: Compatible,
LD62
16 points
(I/O assignment: intelligent 16 points)
2 channels
200K 100K 10K
(100K to (10K to (10KPPS
200KPPS) 100KPPS) or less)
}
2 to 5mA
200KPPS 100KPPS 10KPPS
200KPPS 100KPPS 10KPPS
5
2.5 2.5
(Unit : s)
(Minimum phase difference in
2-phase input 1.25 s)
10
5 5
(Unit : s)
(Minimum phase difference in
2-phase input 2.5 s)
–
: Partial change required, ×: Incompatible
Compati-
Precautions for replacement
bility
*1
Set the counting speed of the
LD62 with the switch setting
*2
–
Set the counting speed of the
LD62 to "100K".