Solvimus MBUS-REP Manuale utente

MBUS-REP -USER MANUAL

solvimus GmbH –Ratsteichstr. 5 –98693 Ilmenau –Germany

Phone: +49 3677 7613060 –Fax: +49 3677 7613069 –Email: info@solvimus.de

...we solve. www.solvimus.de

MBUS-REP

REPEATER FOR THE

M-BUS

Version 1.2

Date: 2019-05-21

Author:

Sven Ladegast

solvimus GmbH

Ratsteichstr. 5

98693 Ilmenau

Germany

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© solvimus GmbH Released MBUS_REP500_UG_1.2_EN.docx 
Contents 
1General hints and conventions....................................................................................................................................4 
1 About this document.............................................................................................................................................4 
2 Legal bases .................................................................................................................................................................4 
2.1 Copyright ..........................................................................................................................................................4 
2.2 Personnel qualifications .............................................................................................................................4 
2.3 Technical condition of specified devices............................................................................................4 
3 Symbols........................................................................................................................................................................4 
4 Font conventions.....................................................................................................................................................5 
5 Number notation.....................................................................................................................................................5 
6 Safety guidelines......................................................................................................................................................5 
7 Scope.............................................................................................................................................................................6 
8 Abbreviations............................................................................................................................................................6 
9 Versions........................................................................................................................................................................6 
2General Information .........................................................................................................................................................7 
1 Device variants..........................................................................................................................................................7 
2 Connectors .................................................................................................................................................................8 
3 State LEDs....................................................................................................................................................................8 
3Bringing into service.........................................................................................................................................................9 
1 Extending an existing M-Bus with a new bus segment .........................................................................9 
2 Ripping up an existing M-Bus ............................................................................................................................9 
4Troubleshooting.............................................................................................................................................................. 10 
1 Hardware error....................................................................................................................................................... 10 
1.1 The devices does not respond.............................................................................................................. 10 
1.2 Current consumption is too high (M-Bus slave side).................................................................. 10 
1.3 Current consumption is too high (24 VDC power supply side) ............................................. 10 
5Technical data .................................................................................................................................................................. 11 
1 General characteristics ....................................................................................................................................... 11 
1.1 Physical dimensions / weight................................................................................................................ 11 
1.2 Installation / Storage................................................................................................................................. 11 
2 Electrical characteristics..................................................................................................................................... 11 
2.1 Power Requirements ................................................................................................................................ 11 
2.2 Communication interfaces..................................................................................................................... 11 

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1General hints and conventions

1.1 About this document

This manual provides guidance and procedures for a fast and efficient installation and start-up of

the units described in this manual. It is imperative to read and carefully follow the safety guidelines.

1.2 Legal bases

1.2.1 Copyright

This manual, including all figures and illustrations, is copyright-protected. Any further use of this

manual by third parties that violate pertinent copyright provisions is prohibited. Reproduction,

translation, electronic and phototechnical filing/archiving (e.g. photocopying) as well as any

amendments require the written consent of solvimus GmbH.

Non-observance will involve the right to assert damage claims.

The solvimus GmbH reserves the right to provide for any alterations or modifications that serve to

increase the efficiency of technical progress. All rights arising from the granting of patents or from

the legal protection of utility patents are owned by the solvimus GmbH. Third-party products are

always mentioned without any reference to patent rights. Thus, the existence of such rights cannot

be excluded.

1.2.2 Personnel qualifications

The use of the product described in this manual requires special personnel qualifications. All

responsible persons have to familiarize themselves with the underlying legal standards to be

applied, i.e.:

•Valid standards

•Handling of electronic devices

The solvimus GmbH does not assume any liability whatsoever resulting from improper handling

and damage incurred to both, solvimus own and third-party products, by disregarding detailed

information in this manual.

1.2.3 Technical condition of specified devices

The supplied components are equipped with hardware and software configurations, which meet

the individual application requirements. Changes in hardware, software and firmware are permitted

exclusively within the framework of the various alternatives that are documented in the specific

manuals. The solvimus GmbH will be exempted from any liability in case of changes in hardware or

software as well as to non-compliant usage of components.

Please send your request for modified and new hardware or software configurations directly to the

solvimus GmbH.

1.3 Symbols

Danger: Always observe this information to protect persons from injury.

Warning: Always observe this information to prevent damage to the device.

Attention: Marginal conditions that must always be observed to ensure smooth and

efficient operation

ESD (Electrostatic Discharge): Warning of damage to the components through electrostatic

discharge. Observe the precautionary measure for handling components at risk of

electrostatic discharge.

Note: Make important notes that are to be complied with so that a trouble-free and efficient

device operation can be guaranteed.

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Additional information: References to additional literature, manuals, data sheets and

internet pages.

1.4 Font conventions

Names of paths and data files are marked in italic-type. According to the system, Slashes or

Backslashes are used.

i.e.:

D:\Data\

Menu items are marked in italic-type, bold letters.

i.e.:

Save

Sub-menu items or navigation steps within a web browser are marked by using an arrow between

two menu items or tabs.

i.e.:

File

→

New

Pushbuttons or input fields are marked with bold letters.

i.e.: Input

Keys are marked with bold capital letters within angle brackets.

i.e.: <F5>

The print font for program codes is Courier.

i.e.: END_VAR

Names of variables, designators and configuration fields are marked in italic-type.

i.e.:

Value

1.5 Number notation

Numbers are noted according to this table:

Number code

Example

Note

Decimal

100

Normal notation

Hexadecimal

0x64

C Notation

Binary

'100'

in quotation marks

'0110.0100'

nibbles separated with dot

Table 1: Numbering systems

1.6 Safety guidelines

All power sources to the device must always be switched off before carrying out any

installation, repair or maintenance work.

Replace any defective or damaged devices/modules (i.e. in the event of deformed contacts), as the

functionality of the devices cannot be ensured on a long-term basis.

The components are not resistant against materials having seeping and insulating characteristics.

Materials like e.g. aerosols, silicones, triglycerides (found in some hand creams) belong to this group.

If it cannot be ruled out that these materials appear in the component environment, then the

components must be installed in an enclosure that is resistant against the above mentioned

materials.

Clean tools and materials are generally required to operate the device/module.

Only use a soft, wet cloth for cleaning. Soapy water is allowed. Pay attention to ESD.

Do not use solvents like alcohol, acetone etc. for cleaning.

Do not use contact sprays, which could possibly impair the functioning of the contact area

and may cause short circuits.

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Components, especially OEM modules, are designed for the mounting into electronic

housings. Those devices shall not be touched when powered or while in actual operation.

The valid standards and guidelines applicable for the installation of switch cabinets shall be

adhered to.

The devices are equipped with electronic components that may be destroyed by

electrostatic discharge when touched. It is necessary to provide good grounding to

personnel, working environment and packing. Electroconductive parts and contacts should

not be touched.

1.7 Scope

This manual describes the devices mentioned in the title, supplied by solvimus GmbH, Ilmenau.

1.8 Abbreviations

Abbreviation

Description

DIN

Deutsches Institut für Normung,German standardization body

ESD

ElectroStatic Discharge

LED

Light-Emitting Diode

M-Bus

Meter-Bus (EN 13757,part 2 - 3)

OEM

Original Equipment Manufacturer

VDE

Verband der Elektrotechnik Elektronik Informationstechnik e.V.,association for electrical,electronic & information

technologies

wM-Bus

Wireless Meter-Bus (EN 13757,part 3 - 4)

Table 2: Abbreviations

1.9 Versions

Version

Date

Editor

Changes

1.0

2017-07-18

Sven Ladegast

Initial version.

1.1

2017-08-31

Sven Ladegast

Corrected several paragraphs.

1.2

2018-01-19

Sven Ladegast

Modified layout of this document.

1.2

2019-05-21

Romy Schneider

Added MBUS-REP250 in device variants

Table 3: Versions of this document

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2General Information

The M-Bus (Meter-Bus) is an established and well known interface for automated meter reading.

Especially the ease of installation (simple two-wire system with powering by the bus) and the

robustness are important features. These are also special attributes that are of interest for use in

industrial environments.

The M-Bus is defined in the standard EN 13757. There is an own physical layer as well as an own

protocol. For connecting it to other systems a translation is necessary.

The MBUS-Rep acts as an M-Bus master as well as an M-Bus slave. It is fully transparent to the baud

rate that is used on the M-Bus and on-the-fly baud rate changes are supported by the device. By the

use of the MBUS-REP it is possible to extend an existing M-Bus with further units sharing the same

M-Bus installation. The device will supply power for up to 500 UL on the extended M-Bus segment

depending on the device variant.

The MBUS-REP comes in a 3 U enclosure (modules) and is intended for DIN rail mounting (standard

35 mm DIN rail).

2.1 Device variants

The MBUS-REP is a modular designed gateway. As different variants are available, it is possible to

use the configuration which fits best to the application.

Variant

Order number

M-Bus interface

MBUS-REP125

500414

Max.125 unit loads

MBUS-REP250

500417

Max.250 unit loads

MBUS-REP500

500402

Max.500 unit loads

Table 4: Available variants

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2.2 Connectors

The interface and connectors of the MBUS-REP are available on different sides of the device.

The following figure shows the device:

Figure 1: MBUS-REP500

The MBUS-REP is equipped with the following connectors:

Connector

Marking

Pinning

Remark

Power supply

24VDC,

0VDC

24VDC:12 - 36 VDC

0VDC:Reference ground

Screw clamps

Cross sectional area 2,5 mm²

M-Bus connectors

(master side)

MBUS+,

MBUS-

MBUS+:M-Bus positive bus line

MBUS-: M-Bus negative bus line

Screw clamps

Cross sectional area 2,5 mm²

MBUS+ and MBUS- are shorted each

M-Bus connectors

(slave side)

MBI1,MBI2,

MBI1,MBI2:Bus lines of the M-Bus to extend

nc:Not connected

Screw clamps

Cross sectional area 2,5 mm²

Table 1: Connectors

2.3 State LEDs

The MBUS-REP is equipped with 3 state LEDs. These LEDs visualize the operational state of the

device:

LED

Color

Description

COL

red

Lights up when a collision has been detected on the M-Bus

yellow

Lights up when the M-Bus master is transmitting to the M-Bus

green

Lights up when data is received from M-Bus slaves

Table 2: State LEDs

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3Bringing into service

De-energize the M-Bus or whose master respectively before connecting the device.

Please connect the slave connectors (MBI1 and MBI2, see section 2.2) of the MBUS-REP

exclusively to the bus segment of the M-Bus that is powered by the original M-Bus master.

Not doing so will damage the device.

The MBUS-REP is completely transparent to the data communication on the M-Bus. In this manner

the device is not visible as an M-Bus slave and baud rate changes of the M-Bus master do not need

any user interaction.

3.1 Extending an existing M-Bus with a new bus segment

Connect the bus lines of the existing M-Bus to the terminals MBI1 and MBI2.

The new M-Bus segment shall be connected to the terminals MBUS+ and MBUS- (see section 2.2).

The MBUS-REP is able to supply this new bus segment with 125 or 500 UL respectively by only

drawing 2 UL from the M-Bus on its slave connectors (MBI1 & MBI2).

Connect the power supply terminals 24VDC and 0VDC with a suitable DC power supply.

3.2 Ripping up an existing M-Bus

Do rip up the M-Bus at an appropriate position. Please make sure to distribute the devices and unit

loads according to the drive power of the M-Bus master(s).

Connect the bus lines that are connected to the original M-Bus master to the terminals MBI1 and

MBI2 (see section 2.2).

The second M-Bus segment is now powered by the MBUS-REP and goes to the terminals MBUS+

and MBUS- (see section 2.2). The MBUS-REP is able to supply this new bus segment with 125 or

500 UL respectively by only drawing 2 UL from the M-Bus on its slave connectors (MBI1 & MBI2).

Connect the power supply terminals 24VDC and 0VDC with a suitable DC power supply.

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4Troubleshooting

In case the MBUS-REP works not as described in this document, it is useful to locate the malfunction

in order to resolve the issue and to recover the full functionality again.

4.1 Hardware error

4.1.1 The devices does not respond

After powering the device it does not operate. Current consumption is about 0 mA.

Please check the following thinks:

•Is there a voltage of about 24 VDC between the terminals 24VDC and 0VDC?

•Is there a voltage of about 40 VDC present between the terminals MBUS+ and MBUS-?

•Is there a voltage of about 20 - 40 VDC between the terminals MBI1 and MBI2?

If errors could not be resolved, please contact our customer support:

email: support@solvimus.de

4.1.2 Current consumption is too high (M-Bus slave side)

Communication stalls after connecting the MBUS-REP to the M-Bus. When supplying a voltage

between 24 and 40 VDC to the terminals MBI1 and MBI2 the current draw exceeds 100 mA.

If errors could not be resolved, please contact our customer support:

email: support@solvimus.de

4.1.3 Current consumption is too high (24 VDC power supply side)

Communication to the extended M-Bus segment stalls after connecting a suitable power supply to

the MBUS-REP. The current draw from the power supply exceeds 1.8 A.

If errors could not be resolved, please contact our customer support:

email: support@solvimus.de

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