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MELSEC-Q
4 INSTALLATION, WIRING AND MAINTENANCE OF THE PRODUCT
4.4 Confirming the installation and wiring
4.4.1 Items to confirm when installation and wiring are completed
Check the following points when completed with the QD75MH installation and wiring.
•
Is the module correctly wired? ... "Connection confirmation"
With "connection confirmation", the following three points are confirmed using GX
Configurator-QP's connection confirmation function. (GX Configurator-QP is
required for this "connection confirmation".)
•
Are the QD75MH and servo amplifier correctly connected?
•
Are the servo amplifier and servomotor correctly connected?
•
Are the QD75MH and external device (input/output signal) correctly
connected?
With this "connection confirmation", "whether the direction that the QD75MH
recognizes as forward run matches the address increment direction in the actual
positioning work", and "whether the QD75MH recognizes the external
input/output signals such as the near-point dog signal and stop signal" can be
checked.
Refer to GX Configurator-QP Operating Manual for details on "Connection
confirmation".
Note that the monitor data of the "
Md.30
External input signal" in the GX
Developer may also be used to "confirm the connection between the QD75MH
and external device (input signals)".
Important
If the QD75MH 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" 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.