Precautions For Transition - Mitsubishi Electric MELSEC Q Series Handbook

1
INTRODUCTION
Point
The AnS extension base unit equipped with the QA1S6ADP(-S1) can be used with a Universal model
QCPU (with serial number (first five digits) "13102" or later).
For specifications and precautions of the QA1S6ADP(-S1), refer to the QA1S6ADP Q-AnS Base Unit
Conversion Adapter User's Manual/QA1S6ADP-S1 Q-AnS Base Unit Conversion Adapter User's
Manual.
The modules which can be mounted on the AnS extension base unit equipped with the QA1S6ADP(-S1)
are the same as the ones for the QA1S extension base unit.
For details, refer to Section 5.4.5.
Note that the QA1S6ADP(-S1) and the QA1S extension base unit cannot coexist in one system.
For MELSEC-A/QnA(large type) Series to Q Series transition related products manufactured by Mitsubishi
Electric Engineering Co., Ltd. or Mitsubishi Electric System & Service Co., Ltd., contact your local sales office or
representative.

1.2.3 Precautions for transition

(1) Before replacing the A/AnS/QnA/QnAS series by the Q series, be sure to refer to manuals for
each Q series module to check the functions, specifications, grounding method, and usage.
(2) For products manufactured by Mitsubishi Electric Engineering Co., Ltd. and Mitsubishi Electric
System & Service Co., Ltd., refer to the catalog for each product shown in Appendix to develop
an understanding of the detailed specifications, precautions and restrictions for use for correct
usage.
(3) After replacing the A/AnS/QnA/QnAS series by the Q series, be sure to check operations of
the whole system before the actual operation.
Point
Before replacement, make sure again that the frame ground of the programmable controller system is
securely grounded.
The noise tolerance of programmable controllers is secured by diverting noise to ground via the frame
ground as an EMC measure.
For this reason, the system might be affected by noise according to reconfiguring the system if
grounding is insufficient.
Also, consider the following as a provisional measure when checking grounding status is difficult.
(1) Change the ground of the system into an exclusive ground.
(2) Add on a ferrite core between the ground wire and the module FG terminal.
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