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Chapter 4 Installation, Wiring and Maintenance of the Produc
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 QD77MS installation and wiring.
•
Is the module correctly wired?
The following four points are confirmed using the positioning test function of
GX Works2.
With this function, "whether the direction that the QD77MS recognizes as forward run
matches the address increment direction in the actual positioning work", and "whether
the QD77MS recognizes the external input signals such as the manual pulse generator
and forced stop", etc., can be checked.
•
Are the QD77MS and servo amplifier correctly connected?
•
Are the servo amplifier and servomotor correctly connected?
•
Are the QD77MS and external devices (input signals) correctly connected?
•
Are the servo amplifier and external wiring (FLS, RLS, DOG) correctly connected?
Refer to the "Simple Motion Module Setting Tool Help" of GX Works2 for details of
"Positioning test function".
Note that the monitor data of the "
Md.30
External input signal" in the
GX Works2 may also be used to "confirm the connection between the QD77MS and
external devices (input signals)".
Important
If the QD77MS is faulty, or when the required signals such as the near-point dog signal and forced 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 forced stop signal" may
occur. Execute a checking wiring of external input signal. The connection confirmation by positioning
test function 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.
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