20.
20 -
11
EMC AND LOW VOLTAGE DIRECTIVES
20.2 Requirements for Compliance with Low Voltage Directives
The Low Voltage Directives apply to the electrical equipment operating from 50 to
1000VAC or 75 to 1500VDC; the manufacturer must ensure the safety of the equipment.
Sections 20.2.1 to 20.2.7 provide precautions on installation and wiring of the MELSEC-
QnA series PLC to conform to The Low Voltage Directives.
The descriptions are made based on the requirements and standards of the latest
regulation. However, they do not guarantee that any machinery produced according to the
contents of this manual is compliant with the above directives.Therefore, manufacturers
must finally determine how to make it comply it and how it is compliant with the low voltage
directives.
20.2.1 Standard applied for MELSEC-QnA series PLC
The standard applied for MELSEC-QnA series PLC is EN61010-1 safety of devices used
in measurement, control, or laboratories.
For the modules which operate with the rated voltage of 50 VAC/75 VDC or above, we
have developed new models that conform to the above standard.
For the modules which operate with the rated voltage less than 50 VAC or 75 VDC,
conventional models can be used, because the low voltage directives do not apply to
them.
20.2.2 Precautions when using the QnA series PLC
Module selection
(1) Power supply module
Since a power supply module with the rated input voltage of 100/200VAC has a
potentially hazardous voltage area (42.4V or more at the peak), select a model in
which reinforced insulation is provided between the primary and secondary sides.
For those of 24VDC rated input, conventional models can be used.
(2) I/O module
Since an I/O module with the rated input voltage of 100/200VAC has a potentially
hazardous voltage area, select a model in which reinforced insulation is provided
between the primary and secondary sides.
For those of 24VDC rated input, conventional models can be used.
(3) CPU module, memory card, base unit
Conventional models can be used for these modules, because they only have a
5VDC circuit inside.
(4) Special function module
Conventional models can be used for the special function modules including analog
modules, network modules, and positioning modules, because their rated voltage is
24 V DC or lower.
(5) Display
Use the CE-marked product.
Содержание Q2ACPU
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Страница 221: ...12 12 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU ...
Страница 222: ...12 13 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU ...
Страница 237: ...12 28 12 OVERVIEW OF PROCESSING PERFORMED BY THE QnACPU MEMO ...
Страница 269: ...16 11 16 POWER SUPPLY MODULE 2 Names and description of parts of the A62P A62PEU and A65P module ...
Страница 271: ...16 13 16 POWER SUPPLY MODULE 4 Names and description of parts of the A66P ...
Страница 343: ...21 21 13 MAINTENANCE AND INSPECTION 21 4 2 Replacement of the fuse for an output module ...
Страница 357: ...22 12 22 TROUBLESHOOTING ...
Страница 359: ...22 14 22 TROUBLESHOOTING MEMO ...
Страница 417: ...App 20 APPENDICES 3 Shift instructions Classification Symbol Description n bit shift 1 bit shift 1 word shift ...
Страница 429: ...App 32 APPENDICES Trigonometric function Classification Symbol Description ...
Страница 432: ...App 35 APPENDICES 15 Clock instructions Classification Symbol Description Clock data read write ...
Страница 537: ...App 140 APPENDICES REMARK 1 Message 1 An error code is displayed in 2 Alert 1 3 Alert 2 ...
Страница 538: ...App 141 APPENDICES APPENDIX 6 EXTERNAL DIMENSIONS Appendix 6 1 CPU Module 1 Q3ACPU Q4ACPU modules Unit mm inch ...
Страница 539: ...App 142 APPENDICES 2 Q2ACPU Q2ACPU S1 modules Unit mm inch ...
Страница 541: ...App 144 APPENDICES 2 A66P power supply module Unit mm inch ...
Страница 542: ...App 145 APPENDICES Appendix 6 3 Main Base Unit 1 A32B base unit 2 A32B S1 base unit Unit mm inch Unit mm inch ...
Страница 543: ...App 146 APPENDICES 3 A35B base unit 4 A38B A38HB A38HBEU base unit Unit mm inch Unit mm inch ...
Страница 567: ...MEMO ...
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