Circutor CEM M-ETH Manuale utente

INSTRUCTION MANUAL

(M060B01-03-21A)

Communications interface

CEM M-ETH

Instruction Manual

SAFETY PRECAUTIONS

DISCLAIMER

CIRCUTOR, SA reserves the right to make modifications to the device or the unit specifications set

out in this instruction manual without prior notice.

CIRCUTOR, SA on its web site, supplies its customers with the latest versions of the device specifica-

tions and the most updated manuals.

www.circutor.com

CIRCUTOR, recommends using the original cables and accessories that are supplied

with the device.

DANGER

Warns of a risk, which could result in personal injury or material damage.

ATTENTION

Indicates that special attention should be paid to a specific point.

Follow the warnings described in this manual with the symbols shown below.

If you must handle the unit for its installation, start-up or maintenance, the following should be

taken into consideration:

Incorrect handling or installation of the unit may result in injury to personnel as well as damage to the

unit. In particular, handling with voltages applied may result in electric shock, which may cause death

or serious injury to personnel. Defective installation or maintenance may also lead to the risk of fire.

Read the manual carefully prior to connecting the unit. Follow all installation and maintenance in-

structions throughout the unit’s working life. Pay special attention to the installation standards of the

National Electrical Code.

Refer to the instruction manual before using the unit

In this manual, if the instructions marked with this symbol are not respected or carried out correctly, it can result

in injury or damage to the unit and/or installations.

CIRCUTOR, SA reserves the right to modify features or the product manual without prior notification.

Instruction Manual

CEM M-ETH

CONTENTS

SAFETY PRECAUTIONS .........................................................................................................................................................3

DISCLAIMER ..........................................................................................................................................................................3

CONTENTS.............................................................................................................................................................................4

REVISION LOG .......................................................................................................................................................................5

1. VERIFICATION UPON RECEPTION....................................................................................................................................6

2. PRODUCT DESCRIPTION .................................................................................................................................................6

3. UNIT INSTALLATION........................................................................................................................................................7

3.1.- PRELIMINARY RECOMMENDATIONS ........................................................................................................................7

3.2.- INSTALLATION .........................................................................................................................................................8

3.3.- UNIT TERMINALS.....................................................................................................................................................9

3.4.- CONNECTION DIAGRAM.........................................................................................................................................10

4. OPERATION.....................................................................................................................................................................11

4.1.- OPERATING PRINCIPLE ...........................................................................................................................................11

4.2.- LED INDICATORS.....................................................................................................................................................11

4.3.- OPTICAL COMMUNICATIONS PORT........................................................................................................................ 12

4.4- RS-485 COMMUNICATIONS.................................................................................................................................... 12

4.4.1.- MODBUS/TCP PROTOCOL ............................................................................................................................. 12

4.4.2.- VARIABLES MODBUS .................................................................................................................................... 13

5. TECHNICAL FEATURES.................................................................................................................................................. 19

6. MAINTENANCE AND TECHNICAL SERVICE ................................................................................................................... 21

7. GUARANTEE................................................................................................................................................................... 21

8. CE CERTIFICATE ............................................................................................................................................................22

Note: The images of the units are solely for the purpose of illustration and may differ from the origi-

nal unit.

CEM M-ETH

Instruction Manual

REVISION LOG

Table 1: Revision log.

Date Revision Description

11/14 M060B01-03-14A Initial Version

04/21 M060B01-03-21A Circutor logo change

Instruction Manual

CEM M-ETH

1. VERIFICATION UPON RECEPTION

Check the following points upon receiving the unit:

a) The unit meets the specifications described in your order.

b) The unit has not suffered any damage during transport.

c) Perform an external visual inspection of the unit prior to switching it on.

d) Check that it has been delivered with the following:

- An installation guide,.

If any problem is noticed upon reception, immediately contact the transport com-

pany and/or CIRCUTOR's after-sales service.

2. PRODUCT DESCRIPTION

The CEM M-ETH optical-electric interface converts the optical service port of any unit of the CEM

range into an Ethernet port with MODBUS/TCP protocol.

The unit features:

- 3 indicator LEDs: POWER, LINK and LINK/ACT.

The unit is installed on 2-step DIN rails, on the left of any unit of the CEM range.

CEM M-ETH

Instruction Manual

3. UNIT INSTALLATION

3.1.- PRELIMINARY RECOMMENDATIONS

In order to use the unit safely, it is critical that the individuals who handle it follow the

safety measures set out in the standards of the country where it is being used, use the

necessary personal protective equipment and pay attention to the various warnings

indicated in this instruction manual.

The CEM M-ETH unit must be installed by authorised and qualified staff.

The power supply plug must be disconnected before handling, altering the connections or replacing

the unit. It is dangerous to handle the unit while it is powered.

Also, it is critical to keep the cables in perfect condition in order to avoid accidents, personal injury and

damage to installations.

The manufacturer of the unit is not responsible for any damage resulting from failure by the user or

installer to observe the warnings and/or recommendations set out in this manual, nor for damage

resulting from the use of non-original products or accessories or those made by other manufacturers.

If an anomaly or malfunction is detected in the unit, do not use the unit to take any measurements.

Inspect the work area before taking any measurements. Do not take measurements in dangerous ar-

eas or where there is a risk of explosion.

Disconnect the unit from the power supply (unit and measuring system power supply)

before maintaining, repairing or handling the unit's connections.

Please contact the after-sales service if you suspect that there is an operational fault

in the unit.

Instruction Manual

CEM M-ETH

3.2.- INSTALLATION

On the side of the unit are all of the indications adjusted to the CEI 62052-11 standard.

The unit is installed on a DIN rail.

Before connecting the unit, you must couple it to a CEM energy meter as shown in Figure 1 and Figure 2.

Figure 1: Coupling the CEM M-ETH to a CEM energy meter

Figure 2: Coupled CEM M-ETH and CEM

Terminals, opening covers or removing elements can expose parts that are hazardous

to the touch while the unit is powered. Do not use the unit until it is fully installed.

CEM M-ETH

Instruction Manual

The unit must be connected to a power circuit that is protected with gL fuses (IEC 269) or M fuses, with

a rating of 0.5 to 2 A. It must be fitted with a circuit breaker switch or equivalent device for disconnect-

ing the unit from the power supply mains.

The RCCB or equivalent device must be in the immediate vicinity of the unit and must be easily acces-

sible.

The power circuit is connected with a cable with a section measuring up to 2.5 mm2.

The unit's operating temperature is between -25ºC and +70ºC; always use connection

cables that can withstand these temperatures.

3.3.- UNIT TERMINALS

Table 2:List of CEM M-ETH terminals

Unit terminals

1: Auxiliary power supply.

2: Auxiliary power supply.

3: Ethernet.

1 2

Figure 3:CEM M-ETH terminals

Instruction Manual

CEM M-ETH

3.4.- CONNECTION DIAGRAM

The connection between the CEM M-ETH and the Ethernet network must be made with a twisted pair

cable (100Base-TX: 100Mbit/s on two pairs of wires of Category 5 or higher). The segment length of

the 100Base-T, 10BaseT and 1000Base-T cables is limited to 100 m.

CEM M-ETH

Alimentación

Power Supply

Ethernet

Figure 4: CEM M-ETH connection diagram

CEM M-ETH

Instruction Manual

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