![background image](http://html1.mh-extra.com/html/omron/cp1l-l14d-series/cp1l-l14d-series_operation-manual_742090511.webp)
478
Troubleshooting
Section 9-2
9-2
Troubleshooting
Use the following procedure to check error details and remove the cause of
the error if the CPU Unit does not operate when the power supply is ON, oper-
ation suddenly stops and the error indicator (ERR/ALM indicator) lights, or if
the error indicator (ERR/ALM indicator) flashes during operating.
9-2-1
Error Processing Flowchart
Confirm the error category by referring to the status of the CPU Unit indica-
tors, investigate the cause for the error in the error tables, and take corrective
actions.
9-2-2
No Operation When Power Is Supplied
First confirm that the POWER indicator (green) is lit.
POWER Indicator Not Lit
The power supply may not match the Unit rating, wiring may not be correct, or
the Unit may be faulty.
1,2,3...
1.
Confirm the Unit rating (i.e., is it 24 VDC or 100 to 240 VAC?) and see if
the supply power matches the rating.
2.
Check the wiring to see if it is correct and that nothing is disconnected.
3.
Check the voltage at the power supply terminals. If the voltage is normal
and the POWER indicator is lit, the Unit may be faulty. In that case, replace
the Unit.
POWER Indicator Turns OFF and ON
There may be fluctuations in the power supply voltage, disconnected wiring,
or poor contacts. Check the power supply system and wiring.
POWER Indicator Lit but No Operation
Check the RUN indicator if the POWER indicator is lit but the CPU Unit does
not operate. The CPU Unit may be on standby if the RUN indicator is not lit.
Error occurred.
POWER indicator lit?
RUN indicator lit?
ERR/ALM indicator lit?
There is no error in the
CP1H.
Check for other causes
(section 9-3).
Check the power supply
(sections 9-2-2 and 9-3).
ERR/ALM indicator lit?
A non-fatal error has occurred.
Refer to section 9-2-5.
A fatal error has occurred.
Refer to section 9-2-3.
Lit
Not lit
Not lit
Flashing
Not lit
Lit
Not lit
Lit
Содержание CP1L-L14D Series
Страница 2: ...CP1L L14D CP1L L20D CP1L M30D CP1L M40D CP1L CPU Unit Operation Manual Revised June 2007...
Страница 3: ...iv...
Страница 9: ...x...
Страница 13: ...xiv TABLE OF CONTENTS...
Страница 21: ...xxii...
Страница 33: ...xxxiv Conformance to EC Directives 6...
Страница 65: ...32 Function Blocks Section 1 5...
Страница 153: ...120 CP CPM1A series Expansion I O Unit Wiring Section 3 6...
Страница 523: ...490 Troubleshooting Unit Errors Section 9 4...
Страница 531: ...498 Replacing User serviceable Parts Section 10 2...
Страница 563: ...530 Auxiliary Area Allocations by Function Appendix C...
Страница 611: ...578 Auxiliary Area Allocations by Address Appendix D...
Страница 638: ...605 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 639: ...606 Connections to Serial Communications Option Boards Appendix F...
Страница 669: ...636 Index...
Страница 671: ...638 Revision History...