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1、3300062100Breite: 185 mm Hhe: 230 mmModicon TSX Quantum140 ERT 854 10Smart Digital Input ModuleUser Manual840 USE 477 0010/98Data, Illustrations, Alterations Data and illustrations are not binding. We reserve the right to alter products in line with our policy of continuous product development. If y
2、ou have any suggestions for improvements or amendments or have found errors in this publication, please notify us using the form on one of the last pages of this publication.Training Schneider Automation GmbH offers suitable further training on the system.Hotline See addresses for the Technical Supp
3、ort Centers at the end of this publication.Trademarks All terms used in this publication to denote Schneider Automation GmbH products are trademarks of Schneider Automation GmbH.All other terms used in this publication to denote products may be registered trademarks and/or trademarks of the correspo
4、nding Corporations. Microsoft and MS-DOS are registered trademarks of Microsoft Corporation, Windows is a brandname of Microsoft Corporation in the USA and other countries. IBM is a registered trademark of International Business Machines Corporation. Intel is a registered trademark of the Intel Corp
5、oration.Copyright All rights are reserved. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, including copying, processing or by online file transfer, without permission in writing by Schneider Automation GmbH. You are not authorized to
6、translate this document into any other language. 1998 Groupe Schneider GmbH. All rights reservedPreface41IIIBreite: 185 mm Hhe: 230 mmTerminologyNoteThis symbol emphasizes important facts.CautionThis symbol refers to a frequent source of error.WarningThis symbol points to a source of danger that may
7、 cause financial or health damage or have other aggravating consequences.ExpertThis symbol is used when more detailed information, intended exclusively for experts, is given. To understand and apply it requires special training. Skipping this information will not interfere with understanding the doc
8、ument, no restrict standard application of the product.TipThis symbol is used for Tips a 0 value deactivates debounce filtering.The selection of debounce filter type ”steady state” or ”integrating” applies to all 8 functionality block inputs.? ”Steady state” filtering A signal change is only registe
9、red when the changed polarity has remained fully stable over the given filter time (every new change resets the filter timer).? ”Integrating” filtering A signal change is only registered after the polarity has remained in the opposite state over a total time span which equals the programmed filter t
10、ime, inspite of any polarity changes.NoteDebounce time values =1 millisecond are recommended to provide sufficient immunity to EM disturbances. As a result, input signal states = 2 milliseconds and events at up to 250 Hz can be processed. In uncritical EM environments the debounce time value can be
11、set to 0, avoiding additional filtration delays. Acquisition of input state changes = 1 millisecond is then reliable and events up to 500 Hz can be processed.STOP206FunctionalityDechattering Dechattering only applies to event any SW clock runtime discrepancies are corrected. The module requires 2 to
12、 3 minutes after startup before times are provided. This should allow the SW clock to fully synchronize within 3 minutes after initial transmitter reception. This takes longer should the incoming time messages be invalid or absent during this period. Thereafter the module determines the standard dev
13、iation of the SW clock with regard to the external time base over a defined period, and compensates the clock accordingly. This takes place continuously during the entire running time. After several hours runtime (as a rule within 2 hours), the SW clock will have reached its maximum precision.During
14、 periods of nonplausible, or failing time messages the SW clock will continue to run without synchronization and thus larger deviation, up to period specified by a configurable ”validity reserve”, before being resynchronized by the next valid incoming time message. Should this period expire before t
15、he module receives a valid message, the ERT will set a ”time invalid” bit within the ”Status” output word (bit 3 TU) passed back from the ”ERT_854_10” transfer EFB (refer to the EFB description, Section 3.3) and invalidate any time tag data made thereafter. The bit is reset as soon as the next valid
16、 time message is received.Should the module not receive a valid time message within 10 minutes, the ERT sets a ”time reference error” bit within the ”Status” output word (bit 2 TE) passed back from the ”ERT_854_10” transfer EFB (refer to the EFB description, Section 3.3). The bit is reset as soon as the next valid time message is received.Three synchronization possibilities are provided:? DCF 77E receiver module (German standard long wave reception only in Europe) ? 470 GPS 001 s
