20 -
14
20. EMC AND LOW VOLTAGE DIRECTIVES
20.2.5 Module installation
(1) Installing modules contiguously
The left side face of each QnA series I/O module is open. When installing I/O
modules to the base, do not allow any empty slots between modules. If a slot to the
left of a 100/200VAC module is left empty, the circuit board containing the hazardous
voltage circuit is exposed. When a slot needs to be left open, be sure to install the
blank module (AG60).
When using the A5 B expansion base with no power supply, attach the included
cover to the side of the leftmost module.
20.2.6 Grounding
There are two kinds of ground terminals as shown below. Either ground terminal must be
used grounded.
Be sure to perform protective grounding to ensure the safety.
20.2.7 External wiring
(1) Module power supply and external power supply
For the remote module which requires 24VDC as module power supply, the 5/12/24/
48VDC I/O module, and the special function module which requires the external
power supply, use the 5/12/24/48VDC circuit which is doubly insulated from the
hazardous voltage circuit or use the power supply whose insulation is reinforced.
(2) External devices
When a device with a hazardous voltage circuit is externally connected to the PLC,
use a model whose circuit section of the interface to the PLC is intensively insulated
from the hazardous voltage circuit.
(3) Reinforced insulation
Reinforced insulation refers to the insulation with the dielectric withstand voltage
shown in Table 1.
Protective grounding
: Ensures the safety of the PLC and improves the noise
resistance.
Functional grounding
: Improves the noise resistance.
Reinforced Insulation Withstand Voltage (Installation Category II, source : IEC664)
Rated voltage of hazardous voltage area
Surge withstand voltage (1.2/50 s)
150VAC or less
2500V
300VAC or less
4000V
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 ...
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