AN_SWT 3000 C37.94

Communication SolutionsTeleprotection Signalling SWT 3000

V1.00

Application Notes

C53000-X6076-C237-1

Table of Contents SWT 3000 Stand-Alone Device with C37.94 1

NotePlease observe safety notes and warnings for your own safety.

Disclaimer of LiabilityThis document has been subjected to rigorous technical review before being published. It is revised at regular intervals, and any modifications and amendments are included in the subsequent issues. The content of this doc-ument has been compiled for information purposes only. Although Siemens AG has made best efforts to keep the document as precise and up-to-date as possible, Siemens AG shall not assume any liability for defects and damage which result through use of the information contained herein. This content does not form part of a contract or of business relations; nor does it change these. All obligations of Siemens AG are stated in the relevant contractual agreements. Siemens AG reserves the right to revise this document from time to time.Document version: 01Date of issue: 03.2012Product version: V1.00

CopyrightCopyright © Siemens AG 2012. All rights reserved.The disclosure, duplication, distribution and editing of this document, or utili-zation and communication of the content are not permitted, unless autho-rized in writing. All rights, including rights created by patent grant or registra-tion of a utility model or a design, are reserved.Registered TrademarksSWT 3000 is a product of Siemens AG. Any unauthorized use is illegal. All other designations in this document can be trademarks whose use by third parties for their own purposes can infringe the rights of the owner.

Table of Contents

1 SWT 3000 Stand-Alone Device with C37.94 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

1.1 Implementation of the New Feature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1.2 Short Description of the New Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

1.3 Configuration of the Digital Line with C37.94. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

1.3.1 Configuring the Digital Line 1 or 2 with Type C37.94 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

1.3.2 FOM Type Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Communication Solutions Teleprotection Signalling, Application NotesC53000-X6076-C237-1, Edition 03.2012

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Table of Contents


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1 SWT 3000 Stand-Alone Device with C37.94

1.1 Implementation of the New Feature 6

1.2 Short Description of the New Feature 6

1.3 Configuration of the Digital Line with C37.94 8


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SWT 3000 Stand-Alone Device with C37.941.1 Implementation of the New Feature

1.1 Implementation of the New Feature.

The new functionality of C37.94 for SWT 3000 supports only the standalone device. The feature is implemented in PowerSys versions ≥ P3.4.120, except for P3.5.100.

1.2 Short Description of the New Feature.

The SWT 3000 is operating via optical fiber with multiplexer or data converter that supports IEEE C37.94. For each transmission direction, a separate fiber is necessary.

Figure 1-1 SWT 3000 Configuration with C37.94

Table 1-1 Specification of the Fiber-Optic-Module FOS-3

Note

For more information, refer to the Equipment Manual, Chapter Technical Data.

Note

1. Both SWT 3000 have the same FOM C37.94 module and the same configuration (that means the same data rate).

2. FOM C37.94 can be used as primary or secondary path and in any combination with other digital or analog interfaces on another path.

Fiber type Multi-mode with modules using 850 nm-wavelengthWavelength 830 nmOptical connector LC connectorRange Approx. 2 km at 850 nm (depending on the fiber used)2 x LED TX and RX-AlarmClock FOM_C37.94 is DTE (for test purpose, a switchover to DCE is possible)


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SWT 3000 Stand-Alone Device with C37.941.2 Short Description of the New Feature

CAUTIONExercise caution with laser beams of the optical plug-in modules.

The laser beams can damage your eyes. If you do not comply with the safety notes, this will result in medium severe or slight injuries.

✧ Do not look directly into the optical fiber terminals of the active optical plug-in modules, not even with optical devices.

Note

Laser class 1 is adhered to in compliance with EN 60825-1 and EN 60825-2, in the case of ≤ 62.5 μm/125 μm optical fibers.


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SWT 3000 Stand-Alone Device with C37.941.3 Configuration of the Digital Line with C37.94

1.3 Configuration of the Digital Line with C37.94

1.3.1 Configuring the Digital Line 1 or 2 with Type C37.94

Configuration of C37.94

Figure 1-2 SWT 3000 - Configuration ---> System

Note

2 SWT 3000 which are equipped with FOM_C37.94 can be connected directly either with the DCE setting (clock source) or the DTE setting. This connection is used only for testing the connection and functionality of the FOM_C37.94.

In normal operation, the mode C37.94-DTE is used and the clock source is the external multiplexer or data converter.


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Configuration of the Data Rate

If C37.94 has been selected in both digital interfaces boxes, the data rate 1 corresponds to the digital interface 1 and the data rate 2 corresponds to the digital interface 2 (refer to the following figure).

Figure 1-3 Configuring Both Digital Interfaces


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If only one interface has been selected, only the corresponding data-rate field is enabled. The other one is disabled (refer to the following figure).

According to IEEE C37.94, the data rate must be 1 to 12 x 64 kbps. It can be selected via the list box of data rate 1 or data rate 2 in tab System of the SWT 3000 – Configuration.

Figure 1-4 Configuring the Data Rate


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For the standard configuration C37.94 DTE, it is also possible to detect automatically the data rate of the DCE device by selecting Auto in the data-rate field.

Figure 1-5 Configuring the Data Rate by Selecting the Option Auto

Note

For the setting of the Tx and Rx address, Siemens recommends using a pair of 2 different address numbers as stated in the following table.

Table 1-2 Example of TX and RX Addresses

Device A Device BTX-add. = 1 RX-add. = 1RX-add. = 2 TX-add. = 2


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1.3.2 FOM Type Information.

The FOM type that was plugged into the slot can be read in the field Firmware-overview. The type must be C37.94 (refer to the following figure).

Figure 1-6 Firmware-overview with C37.94 Type


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If a FOM board type other than FOS-3 is plugged into the slot and the FOM board is configured with the C37.94, the hardware alarm and configuration alarm are issued. The type of FOM board appearing in the field must be FOM (refer to the following figure).

Figure 1-7 Firmware-overview with FOM Type

Note

For more information, refer to the Equipment Manual, Chapter Technical Data.

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AN_SWT 3000 C37.94

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