External Interface Specifications Comparison - Mitsubishi Electric MELSEC L Series Manual

7
POSITIONING MODULE REPLACEMENT

7.2.5 External interface specifications comparison

The following table lists the differences of the external interface specifications between the A1SD75P-
S3 and LD75P/D.
*1
Item
Drive unit READY
Upper/lower limit signal
Stop signal
Near-point dog signal
Speed/position switching
signal
Input
Zero signal
Manual pulse generator
Pulse
Output
Deviation counter clear
*1 The external start and in-position signals are not listed because the LD75P/D does not have these signals.
The "Difference" is described as the form, [Specifications of A1SD75P-S3]  [Specifications of LD75P/D].
*2
*3 The response time difference (0.2ms) between the A1SD75P-S3 and LD75P/D is the time difference of 1pls as the
creep speed of 5000pps.
If accuracy is required, the creep speed needs to be as low as possible.
7
- 18
*2
Difference
–
–
–
Input resistance: 4.7k  4.3k
Input resistance: 4.7k  7.7k
Input resistance: 3.5k  4.7k (at input of
24V)
0.5k  0.62k (at input of 5V)
Response time: 0.8ms  1ms
ON voltage: 2.5V  2.0V (at 5V input)
Rated input current: 7mA  5mA (at 24V
input)
ON current: 3.5mA  2mA
–
–
: Compatible,
Compati-
Precautions for replacement
bility
Including the response time
*3
differences, reconfirming the
specifications is required.
: Partial change required