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APPENDICES
Name
Drive unit READY
In-position signal
Zero signal
Manual pulse generator A phase
Manual pulse generator B phase
Near-point signal
Stop signal
Upper limit
Lower limit
External start
2
Speed-position switching signal
Name
Command pulse
3
Deviation counter clear
1: Comparisons about manual pulse generator A phase/B phase
No. of connectable manual pulse
generators
Mode selection (with parameter)
2: With the QD75, the "external start signal" and "speed-position switching signal" are combined into the "external command signal".
3: Comparisons about command pulse
Mode selection (with parameter)
Max. command frequency
(6) Input/output signal comparisons
Input signal comparisons
Logic (initial status)
Negative logic
Negative logic
Negative logic
Negative logic
1
(multiple of 4)
Negative logic
Negative logic
Negative logic
Negative logic
Negative logic
2
Negative logic
Output signal comparisons
Logic (initial status)
Positive logic
CW/CCW mode
Negative logic
Open collector: 200kpps
Differential driver: 400kpps
A1SD75
Logic switch with
parameters
Not possible
Not possible
Not possible
Not possible
Not possible
Not possible
Not possible
Not possible
Not possible
Not possible
A1SD75
Logic switch with
parameters
Possible
Not possible
A1SD75
1 generator/1 axis
Not possible
A1SD75
PULSE/SIGN mode, A phase/B phase (multiple of 4) mode,
A phase/B phase (multiple of 1) mode, CW/CCW mode
Appendix - 67
MELSEC-Q
QD75
Logic switch with
Logic (initial status)
parameters
Negative logic
–
Negative logic
Negative logic
(multiple of 4)
Negative logic
Negative logic
Negative logic
Negative logic
Negative logic
Negative logic
QD75
Logic switch with
Logic (initial status)
parameters
Negative logic
CW/CCW mode
Negative logic
QD75
1 generator/1 module
Possible
Multiple of 1 mode, multiple of 4 mode,
PULSE/SIGN mode
QD75
Open collector: 200kpps
Differential driver: 1Mpps
Possible
–
Possible
Possible
Possible
Possible
Possible
Possible
Possible
Possible
Possible
Possible
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Troubleshooting
