Mitsubishi Electric MELSEC-L LD75D, User Manual

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APPENDICES
A
Appendix
5
Dif
ferences
wit
h Q
S
eries
Appendix 5
Differences with Q Series
(1) Specification comparison
The following table compares specifications of the LD75 and QD75. Specifications not listed below are the same
as the QD75. Recognized programs for the QD75 or external interfaces (cables) can be used for the LD75.
(2) Precautions for utilizing programs
For utilizing programs which have been used in Q series systems in the L series, refer to the precautions when
utilizing programs, described in the following manual.
 MELSEC-L CPU Module User's Manual (Function Explanation, Program Fundamentals)
Item QD75P  /D  QD75P  N/D  N LD75
Max. output pulse 1Mpulse/s (differential) 4Mpulse/s (differential) 4Mpulse/s (differential)
Speed command (unit: pulse) 1 to 1000000pulse/s 1 to 4000000pulse/s 1 to 4000000pulse/s
Starting time (1-axis linear control)
Trapezoidal
acceleration/deceleration: 6ms
S-curve
acceleration/deceleration: 6.5ms Trapezoidal
acceleration/deceleration: 1.5ms
S-curve
acceleration/deceleration: 1.6ms Trapezoidal
acceleration/deceleration: 1.5ms
S-curve
acceleration/deceleration: 1.6ms
Monitor data refreshing
cycle
Current feed value 1.8ms 0.9ms 0.9ms
Other axis monitors
(except external I/O
signals)
56.8ms 0.9ms 0.9ms
Manual pulse generator 1 pulse input magnification 1 to 100 1 to 1000 1 to 1000
Applicable wire size for differential driver common
terminal 0.24 to 2.5

(24 to 12AWG)
0.24 to 2.5

(24 to 12AWG)
0.3 to 1.25

(22 to 16AWG)