Checking Installation And Wiring; Items To Check When Installation And Wiring Are Completed - Mitsubishi Electric MELSEC-L LD75P User Manual

4.4

Checking Installation and Wiring

4.4.1

Items to check when installation and wiring are completed

Check the following points when completed with the LD75 installation and wiring.
• Is the module correctly wired?
With GX Works2, the following three points are confirmed using the positioning test function.
• Are the LD75 and servo amplifier correctly connected?
• Are the servo amplifier and servomotor correctly connected?
• Are the LD75 and external device (input/output signal) correctly connected?
With this function, "whether the direction that the LD75 recognizes as forward run matches the address increment
direction in the actual positioning work", and "whether the LD75 recognizes the external input/output signals such as
the near-point dog signal and stop signal" can be checked.
For details on the positioning test, refer to  Page 756, Appendix 6.5.
If the LD75 is faulty, or when the required signals such as the near-point dog signal and stop signal are not recognized,
unexpected accidents such as "not decelerating at the near-point dog during machine OPR and colliding with the stopper",
or "not being able to stop with the stop signal" may occur.
The connection confirmation by the positioning test must be carried out not only when structuring the positioning system, but
also when the system has been changed with module replacement or rewiring, etc.
CHAPTER 4 INSTALLATION, WIRING, AND MAINTENANCE OF PRODUCT
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