CIRCUTOR CEM-C31-T1, CEM-C31-T1-MID, CEM-C31-485-T1, CEM-C31-485-T1-MID, CEM-C31-485-DS Instruction Manual

Multifunctional energy meter

CEM-C31-T1, CEM-C31-T1-MID

CEM-C31-485-T1, CEM-C31-485-T1-MID

CEM-C31-485-DS, CEM-C31-485-DS-MID

INSTRUCTION MANUAL

(M017B01-03-20B)

CEM-C31

2

Instruction Manual

CEM-C31

SAFETY PRECAUTIONS

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

DANGER

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

ATTENTION

Indicates that special attention should be paid to a speci c point.

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  re. Read the manual carefully prior to connecting the unit. Follow all installation and maintenance instructions 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 noti cation.

DISCLAIMER

CIRCUTOR, SA reserves the right to make modi cations to the device or the unit speci ca-

tions 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 speci cations and the most updated manuals.

www.circutor.com

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

Instruction Manual

3

CEM-C31

REVISION LOG

07/14 M017B01-03-14A Initial Version

11/14 M017B01-03-14B

06/15 M017B01-03-15A

01/17 M017B01-03-17A

10/17 M017B01-03-17B

07/18 M017B01-03-18A

10/19 M017B01-03-19A

01/20 M017B01-03-20A

05/20 M017B01-03-20B

Table 1: Revision log�

Date Revision Description

Changes in the following sections:

4.2. - 4.6

Changes in the following sections:

2 - 3.5. - 4.4.1. - 4.4.2. - 4.5. - 4.6. - 4.7. - 5

Changes in the following sections:

2 .- 5. - 8.

Changes in the following sections:

5.

Changes in the following sections:

2.- 3.3. - 4.7.3. - 4.7.4. - 4.7.5. - 4.8. - 4.12. - 5.

Changes in the following sections:

2. - 3.3. - 3.5. - 4.2. - 4.5. - 5.1. - 5.2. - 5.3. - 5.4. -

5.5. - 5.6. - 6.2. - 7.2.2.2. - 7.2.3. - 8.

Changes in the following sections:

3.2. - 3.5.

Changes in the following sections:

8.

SYMBOLS

Table 2: Symbols�

Symbol Description

Compliant with the relevant European standards.

Device covered by European directive 2012/19/EC. At the end of its useful life, do not leave the unit in a household waste container. Follow local regulations on electronic equipment recycling.

DC current

~

AC current

Note: The images of the devices are solely for the purpose of illustration and may differ from the original device.

Instruction Manual

5

1�- VERIFICATION UPON RECEPTION

Check the following points upon receiving the device:

a) The device meets the specications described in your order. b) The device has not suffered any damage during transport. c) Perform an external visual inspection of the device prior to switching it on. d) Check that it has been delivered with the following:

- An installation guide.

- Safety label (terminal cover).

If any problem is noticed upon reception, immediately contact the transport company and/or CIRCUTOR's after-sales service.

2�- PRODUCT DESCRIPTION

CEM-C31

The CEM-C31 static three-phase energy meter measures class B active energy (EN50470) / class 1(IEC 62053-21) and (optional) class 2 reactive energy (IEC 62053-23). The current is measured with the transformer.

The device features:

- 2 buttons that allow you to browse the different screens and program the device.

- 2 Verication LEDs.

- LCD display, displays all parameters,

- 2 connection seals,

- 2 terminal covers, to cover the top of the terminal box and the xing screws.

- RS-485 communications (CEM-C31-485-xx models).

- Optical communications port for communications with other modules installed on a DIN rail with a service port (CEM-C31-T1 model).

- Impulse output (models CEM-C31-T1 and CEM-C31-485-T1).

- Digital input (model CEM-C31-485-DS).

6

Instruction Manual

CEM-C31

3�- DEVICE INSTALLATION

3.1.- PRELIMINARY RECOMMENDATIONS

In order to use the device safely, it is critical that 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-C31 device must be installed by authorised and qualied staff.

The power supply plug must be disconnected and measuring systems switched off before handling, altering the connections or replacing the device. It is dangerous to handle the device 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 device 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 device, do not use the device to take any measurements.

Inspect the work area before taking any measurements. Do not take measurements in dangerous areas or where there is a risk of explosion.

Disconnect the device from the power supply (device and measuring system power supply) before maintaining, repairing or handling the device's connections. Please contact the after-sales service if you suspect that there is an operational fault in the device.

Instruction Manual

7

CEM-C31

3.2.- INSTALLATION

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

The device is installed on a DIN rail. All electrical con nections must be covered by the plastic

covers, and only the display and keypad should remain exposed.

Terminals, opening covers or removing elements can expose parts that are hazardous to the touch while the device is powered. Do not use the device until it is fully installed.

3.3.- DEVICE TERMINALS

3�3�1� MODEL CEM-C31-T1

Table 3:List of CEM-C31-T1 terminals�

Device terminals

1 : S1, Current input L1 8 : L3, Voltage input L3

2 : L1, Voltage input L1 9 : S2, Current output L3

3 : S2, Current output L1 11 : N, Neutral connection

4 : S1, Current input L2 13 : Auxiliary Power Supply

5 : L2, Voltage input L2 14 : Auxiliary Power Supply

6 : S2, Current output L2 21 : Impulse output (Collector)

7 : S1, Current input L3 22 : Impulse output (Emitter)

Figure 1:Terminals of the CEM-C31-T1�

8

Instruction Manual

CEM-C31

3�3�2� MODEL CEM-C31-485-T1

Table 4:List of CEM-C31-485-T1 terminals�

1 : S1, Current input L1 9 : S2, Current output L3

2 : L1, Voltage input L1 11 : N, Neutral connection

3 : S2, Current output L1 13 : Auxiliary Power Supply

4 : S1, Current input L2 14 : Auxiliary Power Supply

5 : L2, Voltage input L2 21 : Impulse output (Collector)

6 : S2, Current output L2 22 : Impulse output (Emitter)

7 : S1, Current input L3 23: B(-), RS-485

8 : L3, Voltage input L3 24: A(+), RS-485

Device terminals

Figure 2:Terminals of the CEM-C31-485-T1 and CEM-C31-485-DS�

3�3�3� MODEL CEM-C31-485-DS

Table 5:List of CEM-C31-485-DS terminals�

1 : S1, Current input L1 9 : S2, Current output L3

2 : L1, Voltage input L1 11 : N, Neutral connection

3 : S2, Current output L1 13 : Auxiliary Power Supply

4 : S1, Current input L2 14 : Auxiliary Power Supply

5 : L2, Voltage input L2 21: Digital input

6 : S2, Current output L2 22: Digital input (common)

7 : S1, Current input L3 23: B(-), RS-485

8 : L3, Voltage input L3 24: A(+), RS-485

Device terminals

Instruction Manual

9

3.4.- CONNECTION DIAGRAM

CEM-C31

Power

Supply

LOAD

S2 S1

P1

P2

P1

S2 S1

P2

S2 S1

P2

P1

Figure 3: Connection diagram, CEM-C31�

L1

L2

L3

N

10

Instruction Manual

CEM-C31

3.5.- CONNECTIONS

The CEM-C31 has terminal covers to cover the top of the terminal box and the xing screws (Figure 4).

Figure 4: Terminal covers of the CEM-C31�

The xing screws are of the mixed type, allowing the use of PZ2 and at head screwdrivers.

Table 6:CEM-C31 connections�

Connections

Measurement terminals (1, 2� 3, 4, 5, 6, 7, 8, 9, 11)

Maximum cable cross-section 16 mm2 ( 10 mm2 with end sleeve ) ≤ 1.2 Nm

Screwdrivers head PZ2

Impulse output terminals / Digital input (21, 22), Power supply (13, 14) and RS-485 (23, 24)

Maximum cable cross-section 1.5 mm2 ( 1.5 mm2 with end sleeve ) ≤ 0.6 Nm

Screwdrivers head at head (3 x 0.5 mm)

Once connected, the device can be protected with two connection seals (Figure 5).

Instruction Manual

Figure 5: Seal of the CEM-C31�

11

CEM-C31

Once the device is powered, attach the safety label (Figure 6) to terminals 13 and 14 to seal the device.

13 14

Figure 6: Attaching the safety label�

12

Instruction Manual

CEM-C31

4�- OPERATION

The CEM-C31 is an energy meter capable of measuring:

 Imported and exported active energy and reactive energy in the four quadrants. (according to version).

 Active, reactive and apparent power (according to version).  RMS voltage and current.  Power factor, PF

4.1.- BUTTON FUNCTIONS

The CEM-C31 has 2 buttons that allow you to browse the different screens and program the device.

The button can be sealed to prevent access to the programming of the most relevant parameters.

To seal the button, insert the seal through the slot found under the button, Figure 7.

Figure 7: Sealing the button�

Button functions on the measuring screens (Table 7):

Table 7: Button functions on measuring screens�

Button Short press Long press (> 2 s)

For the cyclic movement. Next screen.

Enters reading mode.

Instruction Manual

Enter the programming menu -

13

CEM-C31

4.2.- DISPLAY

The device has an LCD where all parameters are displayed. The display is divided into three areas (Figure 8):

COM MAX DEM

HOURS kgC0

2 COST PAR

T1 T2

Data line

Indicator

kWh

kVArh

Figure 8: CEM-C31 Display areas

 Data line, displaying the values measured by the device.

Units, where the unit of the magnitude being viewed is shown.

Indicators, which shows other parameters:

COM, indicates that there is a communications module connected. It ashes when the communications are established.

HOURS, displays the time in hours.

kgCO2, displays the quantity of kgCO2 released into the atmosphere according to the

energy consumed.

%

L

PF

C

Units

COST, indicates that the variable displayed in the data line is a cost.

PAR, indicates that the variable displayed in the data line is a partial meter.

T1 and T2, indicate the tariff corresponding to the on-screen information.

L1 - L2 - L3 - Indicates the presence of voltage in each phase, with its corresponding

current direction:

“ - “ is used to show the power yielded to the network. “ “ is used to show the power absorbed by the network.

Indicates that the energy being viewed is generated.

Indicates that the energy being viewed is consumed.

Indicates that the energy is inductive.

Indicates that the energy is capacitive.

14

Instruction Manual

Reactive LED

CEM-C31

4.3.- LED INDICATORS

The device has two verication LEDs:

 To verify the active energy�  To verify the reactive energy (according to version).

The weight of the LEDs is 20,000 imp/kWh (kvarh).

The LEDs will remain lit when the current is lower than the energy meter start-up current. Once the start-up current is exceeded (due to active or reactive power consumption) the LEDs are turned off and emit impulses that are proportional to the measured energy.

Active LED

Figure 9:LED Indicators of the CEM-C31�

4.4.- IMPULSE OUTPUT (CEM-C31-T1 and CEM-C31-485-T1 models)

The energy meter has optocoupler type outputs capable of generating impulses at a previously programmed rate. (See “6.2.1. IMPULSE OUTPUT WEIGHT” and ”6.2.2. IMPULSE OUTPUT

TYPE” )

Instruction Manual

15

21

CEM-C31

4.5.- DIGITAL INPUT (CEM-C31-485-DS)

The CEM-C31-485-DS model features a impulse input (terminals 21 and 22 in Table 5), to calculate other supplies or select tariffs.

5 V DC

COMM

470 Ω

Active Tariff selection:

21

Figure 10: Digital input, CEM-C31-485-DS�

Table 8: Tariff selection�

Tariff Tariff selection

Tariff 1

21

22

Tariff 2

16

Instruction Manual

CEM-C31

5�- DISPLAY

The CEM-C31 has 2 display modes:

 Display in standby mode  Display in reading mode

5.1.- DISPLAY IN STANDBY MODE

With the display in standby mode, all of the information is presented in cyclic form without any need to perform any action on the CEM-C31 buttons.

This mode displays different parameters, see Table 9 and Table 10, that alternate every 6 seconds.

The device is in this mode by default when none of the buttons are pressed.

Short press the button to stop the cyclic movement of the parameter being shown at the time.

From then on, short press the button to browse all the parameters dened in Table 9 and

Table 10.

Table 9: Standby mode displays (Table 1)

Models CEM-C31-T1, CEM-C31-485-T1, CEM-C31-485-DS

(Impulse count option

Screen Parameters

Total imported active energy

Total exported active energy

Only displayed in the 4-quadrant version.

Reactive energy quadrant L+ total

(1)

)

(2)

Instruction Manual

Reactive energy quadrant L- total

(2)

Only displayed in the 4-quadrant version.

Reactive energy quadrant C- total

(2)

Only displayed in the 4-quadrant version.

17

Table 9 (Continuation): Standby mode displays (Table 1)

Screen Parameters

CEM-C31

Reactive energy quadrant C+ total

(1)

The impulse count option for the CEM-C31-485-DS model can be congured in section “6.2.3.-

(2)

DIGITAL INPUT TYPE”

(2)

Only displayed if the reactive energy display option has been selected in the setup menu ( see

“6�2�7�2� REACTIVE ENERGY DISPLAY”).

Table 10: Standby mode displays (Table 2)�

Model CEM-C31-485-DS (Tariff option

(3)

)

Screen Parameters

T1

Imported active energy Tariff 1

kWh

T1

Exported active energy Tariff 1

kWh

Only displayed in the 4-quadrant version.

kVArh

kWh

T1

Reactive energy quadrant L+ Tariff 1

L

T1

Reactive energy quadrant L- Tariff 1

(4)

Only displayed in the 4-quadrant version.

L

T1

Reactive energy quadrant C- Tariff 1

(4)

Only displayed in the 4-quadrant version.

C

T1

Reactive energy quadrant C+ Tariff 1

C

T2

(4)

Imported active energy Tariff 2

18

kWh

T2

Exported active energy Tariff 2

Only displayed in the 4-quadrant version.

Instruction Manual

CEM-C31

Table 10 (Continuation) : Standby mode displays (Table 2)�

Screen Parameters

T2

(4)

kVArh

Reactive energy quadrant L+ Tariff 2

L

T2

Reactive energy quadrant L- Tariff 2

Only displayed in the 4-quadrant version.

L

kVArh

T2

Reactive energy quadrant C- Tariff 2

(4)

Only displayed in the 4-quadrant version.

C

kVArh

T2

Reactive energy quadrant C+ Tariff 2

C

kVArh

(3)

The impulse count option for the CEM-C31-485-DS model can be congured in section “6.2.3.-

(4)

DIGITAL INPUT TYPE”

(4)

Only displayed if the reactive energy display option has been selected in the setup menu ( see

“6.2.7.2. REACTIVE ENERGY DISPLAY”).

When the active Tariff does not match the Tariff being displayed, a ashing active Tariff indicator is displayed.

The standby mode is activated again when no button is pressed for 60 seconds.

Instruction Manual

19

CEM-C31

5.2.- DISPLAY IN READING MODE

The reading mode is activated by a long press on the button. In reading mode you can:

 View the voltage, current, active power, apparent power and power factor of the

installation.

 View the energies of the partial energy meters.

 Impulse count display (CEM-C31-485-DS model)  Enter the setup menu.  View the manufacturer information.

The navigation diagram is shown in Figure 11:

T1

kWh

> 2s

Instantaneous Value

Partial energy

Impulse count (CEM-Cx1-485-DS)

General configuration

Manufacturer information

20

Figure 11: Navigation diagram in reading mode of the CEM-C31�

Instruction Manual

CEM-C31

5.3.- INSTANTANEOUS VALUE DISPLAY

To open the screens where the instantaneous value are viewed, long press the key on the display in standby mode. The home screen is displayed Figure 12 :

Figure 12: Instantaneous Value main screen�

Long press the button to open the different screens.

Short press the button to browse the different screens (see Table 11).

Long press the button to exit the instantaneous values screens. The standby mode is activated again when no button is pressed for 60 seconds.

Table 11: Instantaneous value screens�

Screen Parameters

L1 Voltage

L2 Voltage

L3 Voltage

Instruction Manual

L1 Current

L2 Current

L3 Current

21

Table 11 (Continuation): Instantaneous value screens�

Screen Parameters

Active three-phase power

CEM-C31

Reactive three-phase power

Apparent three-phase power

L1 Power Factor

L2 Power Factor

L3 Power Factor

(5)

CEM-C31-T1, CEM-C31-485-T1, CEM-C31-485-DS models

(6):

Hours of operation from manufacture

HOURS T1

CEM-C31-485-DS model

(7)

:

Tariff 1 operating hours, from manufacture

HOURS T2

CEM-C31-485-DS model

(7)

:

Tariff 2 operating hours, from manufacture

(5)

The device must be connected to the L1 phase to calculate the reactive power.

(6)

Visible display for the CEM-C31-485-DS model with impulse count option, see “6.2.3.- DIGITAL INPUT

TYPE”

(7)

Visible display for the CEM-C31-485-DS model with tariff option, see “6.2.3.- DIGITAL INPUT TYPE”

22

Instruction Manual

CEM-C31

5.4.- PARTIAL ENERGY DISPLAY

Note: The partial energy display menu is only displayed if the partial energy display option has been selected in the setup menu (see “6�2�7�1� PARTIAL ENERGY DISPLAY” )

Long press the key in the standby mode screen to open these display screens. Short press the key to display the partial energy main screen, Figure 13.

Figure 13: Partial energy main screen�

Long press the button to open the different screens. Short press the button to browse the different screens (see Table 12 and Table 13).

The PAR icon on the display indicates that you are viewing the partial energies.

Long press the button to exit the Partial energy screens. The standby mode is activated again when no button is pressed for 60 seconds.

Table 12:Partial energy screens (Table 1)�

Models CEM-C31-T1, CEM-C31-485-T1, CEM-C31-485-DS

(Impulse count option

Screen Parameters

Partial imported active energy

Partial exported active energy

Only displayed in the 4-quadrant version.

(8)

)

Instruction Manual

Partial reactive energy, quadrant 1 (L+)

Partial reactive energy, quadrant 2 (L-)

Only displayed in the 4-quadrant version.

(9)

23

Table 12 (Continuation): Partial energy screens (Table 1)�

Screen Parameters

CEM-C31

Partial reactive energy, quadrant 3 ( C-)

(9)

Only displayed in the 4-quadrant version.

Partial reactive energy, quadrant 4 ( C+)

(9)

Hours in partial operation

(since the last partial reset )

Cost of the partial active energy consumed

(since the last partial reset )

(10)

CO2 emissions into the atmosphere.

(since the last partial reset )

(10)

(8)

The impulse count option for the CEM-C31-485-DS model can be congured in section “6.2.3.-

DIGITAL INPUT TYPE”

(

9)

Only displayed if the reactive energy display option has been selected in the setup menu (see “6.2.7.2.

REACTIVE ENERGY DISPLAY”).

(10)

Only displayed if the efficiency factors display option has been selected in the setup menu

(see“6.2.7.3. EFFICIENCY FACTORS DISPLAY”).

Table 13: Partial energy screens (Table 2)�

Model CEM-C31-485-DS (Tariff option

(11)

)

Screen Parameters

PAR

T1

Partial imported active energy Tariff 1

kWh

PAR

T1

Partial exported active energy Tariff 1

kWh

PAR

T1

Only displayed in the 4-quadrant version.

24

kVArh

Partial reactive energy, quadrant 1(L+) Tariff 1.

L

(12)

Instruction Manual

CEM-C31

Tabla 13 (Continuation) : Partial energy screens (Table 2)�

Screen Parameters

PAR

T1

Partial reactive energy, quadrant 2 (L-) Tariff 1.

Only displayed in the 4-quadrant version.

L

kVArh

PAR

T1

(12)

kVArh

kWh

Partial reactive energy, quadrant 3 (C-) Tariff 1.

(12)

Only displayed in the 4-quadrant version.

C

PAR

T1

Partial reactive energy, quadrant 4 (C+) Tariff 1.

(12)

C

PAR

T2

Partial imported active energy Tariff 2

PAR

T2

Partial exported active energy Tariff 2

Only displayed in the 4-quadrant version.

PAR

T2

Partial reactive energy, quadrant 1 (L+) Tariff 2.

(12)

L

kVArh

PAR

kVArh

PAR

kVArh

PAR

kVArh

HOURS PAR T1

T2

Partial reactive energy, quadrant 2 (L-) Tariff 2.

(12)

Only displayed in the 4-quadrant version.

L

T2

Partial reactive energy, quadrant 3 (C-) Tariff 2.

(12)

Only displayed in the 4-quadrant version.

C

T2

Partial reactive energy, quadrant4 (C+) Tariff 2.

(12)

C

Hours in partial operation Tariff 1.

(since the last partial reset )

Instruction Manual

25

Tabla 13 (Continuation) : Partial energy screens (Table 2)�

Screen Parameters

COST PAR T1

Cost of the partial active energy consumed Tariff 1

(since the last partial reset )

kgC02 PAR T1

CO2 emissions into the atmosphere Tariff 1

(since the last partial reset )

HOURS PAR T2

Hours in partial operation Tariff 2.

(since the last partial reset )

COST PAR T2

Cost of the partial active energy consumed Tariff 2

(since the last partial reset )

CEM-C31

(13)

kgC02 PAR T2

CO2 emissions into the atmosphere Tariff 2

(since the last partial reset )

(11)

The tariff option for the CEM-C31-485-DS model can be congured in section “6.2.3.- DIGITAL INPUT

TYPE”

(

12)

Only displayed if the reactive energy display option has been selected in the setup menu (see

“6.2.7.2. REACTIVE ENERGY DISPLAY”).

(13)

Only displayed if the efciency factors display option has been selected in the setup menu (see

“6�2�7�3� EFFICIENCY FACTORS DISPLAY”).

5.5.- IMPULSE COUNT DISPLAY (CEM-C31-485-DS)

(13)

Note: The impulse count display screens are only visible if the impulse count option has been congured in the CEM-C31-485-DS model.

To access the pulse count screens, press the key for a prolonged time on the screen in standby mode. Short presses will display the initial impulse count screen, Figure 14:

26

Figure 14: Main impulse count screen�

Instruction Manual

CEM-C31

To access the different screens, press key for a prolonged time.

Short press the button to browse the different screens (Table 14).

To exit the impulse count screens, press key for a prolonged time.

The standby mode is activated again when no button is pressed for 60 seconds.

Table 14: Impulse count screens�

Screen Parameters

Total impulse count

PAR

Partial impulse count

(

14)

Only visible if the partial energy display has been selected in the setup menu (see “6.2.7.1. PARTIAL

ENERGY DISPLAY”).

5.6.- MANUFACTURER INFORMATION SCREEN

(14)

Long press the button in the standby mode screen to open these display screens. Short press the button to display the manufacturer information home screen, Figure 15:

Figure 15: Manufacturer information home screen�

Long press the button to open the different screens.

Short press the button to browse the different screens (see Table 15).

Long press the button to exit the instantaneous values screens. The standby mode is activated again when no button is pressed for 60 seconds.

Table 15: Manufacturer information screens�

Screen Parameters

Device model

Instruction Manual

27

Table 15 (Continuation): Manufacturer information screens�

Screen Parameters

Version

CEM-C31

Communications protocol

(15)

Communications protocol

version

(15)

Active energy with resolution in Wh

Reactive energy with resolution varh

(15)

The screen is displayed if it is a CEM-C31-T1 and there is a CEM M-RS485 (communications inter-

32-bit CRC

face for the CEM family of devices) connected to the device.

28

Instruction Manual

CEM-C31

6�- CONFIGURATION

The CEM-C31 have 2 conguration menus:

Metrologically relevant parameters configuration menu. General configuration menu.

6.1.- RELEVANT PARAMETERS CONFIGURATION

The most relevant parameters in metrological terms are congured in the programming menu.

Short press the button to access this menu.

This button is sealable, see “4.1.- BUTTON FUNCTIONS”, to restrict access to the programming procedures.

The standby mode is activated again when no button is pressed for 60 seconds or by short

pressing the button.

6�1�1� VOLTAGE PRIMARY TRANSFORMATION RATIO

This is the home screen for entering the voltage primary ratio.

Long press the button to view the value to be programmed.

To write or modify the value, short press the button repeatedly, increasing the value of the ashing digit.

When the desired value is shown on the screen, move onto the next digit with a long press on

the button, allowing the remaining values to be modied.

To validate the data, move to the last digit and long press the button; the validation screen will appear (Figure 16) indicating that the setup value has been saved.

Figure 16: Validation screen�

Instruction Manual

29

CEM-C31

After a few seconds viewing the screen shown on Figure 16 , the system returns to the main screen of the Primary voltage transformation ratio.

Short press the button to access the next programming step

6�1�2� VOLTAGE SECONDARY TRANSFORMATION RATIO

This is the home screen for entering the voltage secondary ratio.

Long press the button to view the value to be programmed.

To write or modify the value, short press the button repeatedly, increasing the value of the ashing digit.

When the desired value is shown on the screen, move onto the next digit with a long press on

the button, allowing the remaining values to be modied.

To validate the data, move to the last digit and long press the button; the validation screen will appear (Figure 16) indicating that the setup value has been saved.

After a few seconds viewing the screen shown on Figure 16 , the system returns to the main screen of the Secondary voltage transformation ratio.

Short press the button to access the next programming step

6�1�3� CURRENT PRIMARY TRANSFORMATION RATIO

This is the home screen for entering the current primary ratio.

Long press the button to view the value to be programmed.

30

To write or modify the value, short press the button repeatedly, increasing the value of the ashing digit.

Instruction Manual

CEM-C31

When the desired value is shown on the screen, move onto the next digit with a long press on

the button, allowing the remaining values to be modied.

To validate the data, move to the last digit and long press the button; the validation screen will appear (Figure 16) indicating that the setup value has been saved.

After a few seconds viewing the screen shown on Figure 16, the system returns to the main screen of the Primary current transformation ratio.

Short press the button to access the next programming step

6�1�4� CURRENT SECONDARY TRANSFORMATION RATIO

This is the home screen for entering the current secondary ratio.

Long press the button to view the value to be programmed.

To write or modify the value, short press the button repeatedly, increasing the value of the ashing digit.

When the desired value is shown on the screen, move onto the next digit with a long press on

the button, allowing the remaining values to be modied.

To validate the data, move to the last digit and long press the button; the validation screen will appear (Figure 16) indicating that the setup value has been saved. After a few seconds viewing the screen shown on Figure 16 , the system returns to the main screen of the Secondary current transformation ratio.

6�1�5� EXITING THE SETUP MENU

When this screen is displayed:

Instruction Manual

Long press the button to exit the programming menu.

Short press the button to return to the rst programming point ( “6.1.1. VOLTAGE PRIMARY TRANSFORMATION RATIO”)

31

CEM-C31

6.2.- GENERAL CONFIGURATION MENU

Long press the button in the standby mode screen to open these setup screens. Short press the button to display the home screen, Figure 17:

Figure 17: Programming home screen

In the setup menu you can:

 Program the weight and type of impulse output

 Program the digital input operating mode.

 Program the communications.

 Program the display screen.

 Program the cost of the energy and the CO2. emissions

 Delete the partial energy meters.

The standby mode is activated again when no button is pressed for 60 seconds.

Long press the button to access the rst programming step.

6�2�1� IMPULSE OUTPUT WEIGHT

Note: Screen only visible for CEM-C31-T1 and CEM-C31-485-T1 models.

This is the home screen for entering the weight of the impulse output.

Long press the button to view the value to be programmed.

To write or modify the value, short press the button repeatedly, increasing the value of the ashing digit.

32

When the desired value is shown on the screen, move onto the next digit with a long press on

the button, allowing the remaining values to be modied.

To validate the data, move to the last digit and long press the button; the validation screen will appear (Figure 18) indicating that the programming value has been saved.

Instruction Manual

CEM-C31

Figure 18: Validation screen�

After a few seconds viewing the screen shown on Figure 18 , the system returns to the Impulse output weight programming main screen.

Minimum value: 99999. Maximum value: 0.

Short press the button to access the next programming step.

6�2�2� IMPULSE OUTPUT TYPE

Note: Screen only visible for CEM-C31-T1 and CEM-C31-485-T1 models.

The impulse output type is selected on this screen, between:

kWh or KVArh�

Short press the button to browse the different options.

To validate the data, long press the button and the validation screen will appear (Figure 18) indicating that the programming value has been saved.

After a few seconds viewing the screen shown on Figure 18 , the system returns to the Impulse output type programming main screen.

Short press the button to access the next programming step.

6�2�3�- DIGITAL INPUT TYPE

Note: Screen only visible for the CEM-C31-485-DS model.

The digital input operation is selected from this screen: Count (as impulse counter) or tariff (Tariff Operation).

Short press the button to browse the different options.

To validate the data, long press the button and the validation screen will appear (Figure 18) indicating that the programming value has been saved.

After a few seconds displaying the screen in Figure 18, it returns to the main digital input Type

Instruction Manual

33

CEM-C31

programming screen.

Short press the button to access the next programming step.

6�2�4� PERIPHERAL ADDRESS

Note: This is only displayed if it is a CEM-C31-485-T1 or CEM-C31-485-DS or if there is a CEM

M-RS485 (communications interface for the CEM family of devices) connected to the CEM-

C31-T1 model.

This is the home screen for entering the peripheral address.

Long press the button to view the value to be programmed.

To write or modify the value, short press the button repeatedly, increasing the value of the ashing digit.

When the desired value is shown on the screen, move onto the next digit with a long press on

the button, allowing the remaining values to be modied.

To validate the data, move to the last digit and long press the button; the validation screen will appear (Figure 18) indicating that the programming value has been saved.

After a few seconds viewing the screen shown on Figure 18, the system returns to the

Peripheral address programming main screen.

Minimum value: 1. Maximum value: 254

Short press the button to access the next programming step.

34

Instruction Manual

CEM-C31

6�2�5� TRANSMISSION SPEED ( BAUD RATE)

Note: This is only displayed if it is a CEM-C31-485-T1 or CEM-C31-485-DS or if there is a CEM

M-RS485 (communications interface for the CEM family of devices) connected to the CEM-

C31-T1 model.

This is the home screen for entering the transmission speed.

Long press the button to view the value to be programmed.

The transmission speed (Baud rate) is selected on this screen, and may be: 9600, 19200 or 38400�

Short press the button to browse the different options.

To validate the data, long press the button and the validation screen will appear (Figure 18) indicating that the programming value has been saved.

After a few seconds viewing the screen shown on Figure 18, the system returns to the Transmission speed programming main screen.

Short press the button to access the next programming step.

6�2�6� TYPE OF COMMUNICATIONS

Note: This is only displayed if it is a CEM-C31-485-T1 or CEM-C31-485-DS or if there is a CEM

M-RS485 (communications interface for the CEM family of devices) connected to the CEM-

C31-T1 model.

This is the home screen for selecting the number of bits, the parity and the number of stop bits of the communications frame.

Long press the button to view the value to be programmed.

Instruction Manual

35

CEM-C31

This screen shows the different options:

8n1 : 8 bits, no parity, 1 stop bit.

8E1 : 8 bits, even parity, 1 stop bit. 8o1 : 8 bits, odd parity, 1 stop bit. 8n2 : 8 bits, no parity, 2 stop bits. 8E2 : 8 bits, even parity, 2 stop bits. 8o2 : 8 bits, odd parity, 2 stop bits.

Short press the button to browse the different options.

To validate the data, long press the button and the validation screen will appear (Figure 18) indicating that the programming value has been saved.

After a few seconds viewing the screen shown on Figure 18, the system returns to the Communications type programming main screen.

Short press the button to access the next programming step.

6�2�7� DISPLAY

This is the home screen for selecting the unit display options.

Long press to access the partial energy display selection screen:

6�2�7�1� Partial energy display

This is the home screen for selecting the partial energy display view option.

Long press to view the options.

36

The possible options are:

Yes, if you want to view the partial energy. No, if you select this option, the unit stops recording the partial

energy. A display view is not provided and the value displayed by communications is 0.

Para saltar entre las diferentes opciones pulsar la tecla de con pulsaciones cortas.

To validate the data, long press the button. The device will return to the main programming screen of the Partial energy display.

Short press to access the reactive energy display selection screen.

Instruction Manual

CEM-C31

6�2�7�2� Reactive energy display

This is the home screen for selecting the reactive energy log display view option.

Long press to view the options.

The possible options are:

Yes, if you want a display view of the reactive energy screens. No, a display view of the reactive energy screens is not provided,

but a communications view is possible.

Short press the button to browse the different options.

To validate the data, long press the button. The device will return to the main programming screen of the Reactive energy display.

Short press to access the efciency factors display selection screen:

6�2�7�3� Efciency factors display

This is the home screen for selecting the display view of the efciency factors: Cost of energy and CO2 emissions.

Long press to view the options.

The possible options are: Yes, if you want a display view of the efciency screens (cost of energy and CO2 emissions). No, if you select this option, the unit stops recording the efciency factors. A display view is not provided and the value displayed by communications is 0.

Short press the button to browse the different options.

To validate the data, long press the button. The device will return to the main programming screen of the Efciency factors display.

Short press to access the display menu output screen:

Instruction Manual

37

When this screen is displayed:

Short press the button to return to the rst conguration point of the display ( “ 6.2.7.1. PARTIAL ENERGY DISPLAY”)

Long press the button to jump to the next programming point.

6�2�8� BACKLIGHT

This is the home screen for selecting the backlight operating mode of the screen in those units that feature it.

Long press to view the different options:

CEM-C31

This screen shows the different options:

On : Backlight always ON.

Off : Backlight always OFF. 005 SEC ... 120 SEC: ON time after the last press of the buttons.

Short press the button to browse the different options.

To validate the data, long press the button and the validation screen will appear (Figure

18) indicating that the programming value has been saved.

After a few seconds viewing the screen shown in Figure 18, it returns to the main programming screen of the Backlight.

Short press the button to access the next programming step.

6�2�9� ENERGY COST

Note: It is only displayed if the efciency factors display has been selected.

38

This is the home screen for entering the energy cost per kWh.

Long press the button to view the value to be programmed.

Instruction Manual

CEM-C31

To write or modify the value, short press the button repeatedly, increasing the value of the ashing digit.

When the desired value is shown on the screen, move onto the next digit with a long press on

the button, allowing the remaining values to be modied.

To validate the data, move to the last digit and long press the button; the validation screen will appear (Figure 18) indicating that the programming value has been saved.

After a few seconds viewing the screen shown on Figure 18 , the system returns to the Energy

cost programming main screen.

Minimum value: 0.000 Maximum value: 9999.999

Short press the button to access the next programming step.

6�2�10� CO2 EMISSIONS

Note: It is only displayed if the efciency factors display has been selected.

This is the home screen for entering the ratio of the carbon emissions. The carbon emissions ratio is the amount of emissions released into the atmosphere to produce a unit of electricity (1 kWh). The European mix ratio is approximately 0.65 kgCo2 per kWh.

Long press the button to view the value to be programmed.

To write or modify the value, short press the button repeatedly, increasing the value of the ashing digit.

When the desired value is shown on the screen, move onto the next digit with a long press on

the button, allowing the remaining values to be modied.

To validate the data, move to the last digit and long press the button; the validation screen will appear (Figure 18) indicating that the programming value has been saved.

After a few seconds viewing the screen shown on Figure 18, the system returns to the CO2

emissions programming main screen.

Minimum value: 0.000

Instruction Manual

39

CEM-C31

Maximum value: 9.000

Short press the button to access the next programming step.

6�2�11� PARTIAL ENERGY METER DELETION

Note: It is only displayed if the partial energy display has been selected.

On this screen you select whether or not to delete the partial energy meters.

Long press the button to delete the energy meters. The validation screen (Figure 18) will be displayed next, indicating that the energy meters were deleted correctly.

After a few seconds viewing the screen shown on Figure 18, the system returns to the Partial energy meter deletion programming main screen.

Short press the button to access the next programming step.

6�2�12� EXITING THE SETUP MENU

When this screen is displayed:

Long press the button to exit the setup menu.

Short press the button to return to the rst setup point.

40

Instruction Manual

CEM-C31

7�- COMMUNICATIONS

7.1.- INFRARED COMMUNICATIONS PORT (Model CEM-C31-T1)

The CEM-C31-T1 model, in all versions, the has a serial optical communications port, in compliance with the UNE EN 62056-21:2003 Standard.

7.2.- RS-485 COMMUNICATIONS PORT (Models CEM-C31-485-xx)

The CEM-C31-485-T1 and CEM-C31-485-DS models has an RS-485 communication port, with

MODBUS RTU ® protocol.

7�2�1�- CONNECTION

The RS-485 cable must be made up of a twisted pair cable with a braided shield with a maximum distance of 1,200 metres between the CEM-C31-485-xx and the master device. A maximum of 32 devices can be connected to this bus.

Use an intelligent RS-232 to RS-485 network protocol converter to establish communications with the master device.

PC

RS-232 / USB / Ethernet / Profibus ...

RS-232 USB Ethernet Profibus ...

RS-485

Instruction Manual

RS-485

B(-)A(+)

Figure 19: CEM-C31-485-T1 and CEM-C31-485-DS connection diagram�

A(+)B(-)

41

CEM-C31

7�2�2�- MODBUS PROTOCOL

The MODBUS protocol is a communication standard in the industry that enables the network connection of multiple devices, where there is a master and multiple slaves. Within the MODBUS protocol the CEM-C31-485-xx uses the RTU (Remote Terminal Unit) mode.

In RTU mode, message starts and ends are detected with silences of at least 3.5 characters, and the 16-bit CRC error-detection method is used.

The MODBUS functions implemented in the device are:

Functions 03 and 04. Reading registers.

Function 10. Writing multiple registers.

7�2�2�1�- Read commands

The CEM-C31-485-xx supports integer type read functions: 0x03 and 0x04.

Example: Reading of the device’s serial number with peripheral number 01.

We will send the following Modbus frame:

Address Function

01 04 2710 0002 CRC

Initial

register

Register

no�

CRC

The device will respond to us with the next frame:

Address Function No� of bytes Serial no� CRC

01 04 04 XXXX XXXX CRC

Note: The values are shown in hexadecimal.

The number of requested registers must be the same as the size of the variable requested. It is possible to read several consecutive addresses, if the request meets the correct format.

7�2�2�2�- Write commands

42

The CEM-C31-485-xx supports integer type write Functions: 0x10.

Example: Changing the Modbus address of peripheral 01 to the address 0x000A.

We will send the following Modbus frame:

Address Function

01 10 03E8 0001 02 000A CRC

Initial

register

Register

no�

No� bytes Data CRC

Instruction Manual

CEM-C31

The device will respond to us with the next frame:

Address Function

01 10 03E8 0001 CRC

Initial

Register

no�

CRC

Note: The values are shown in hexadecimal.

The number of registers to write must be the same as the size of the variable that is being accessed. It is possible to write several consecutive addresses, if the request meets the correct format.

7�2�3�- VARIABLES MODBUS

All MODBUS map addresses are hexadecimal.

7�2�3�1�- Energy

The Read function is implemented for these variables.

Table 16: Modbus variables: Energy (Table 1)�

Description Address Size Units

Total values

Imported active energy 0x0000 32 bits Wh

Exported active energy 0x0002 32 bits Wh

Q1 reactive energy 0x0004 32 bits varh

Q2 reactive energy 0x0006 32 bits varh

Q3 reactive energy 0x0008 32 bits varh

Q4 reactive energy 0x000A 32 bits varh

Partial values

Partial imported active energy 0x0030 32 bits Wh

Partial exported active energy 0x0032 32 bits Wh

Q1 partial reactive energy 0x0034 32 bits varh

Q2 partial reactive energy 0x0036 32 bits varh

Q3 partial reactive energy 0x0038 32 bits varh

Q4 partial reactive energy 0x003A 32 bits varh

Table 17 shows energies per tariff, only visible for the CEM-C31-485-DS model with the Tariff

option selected.(See “6.2.3.- DIGITAL INPUT TYPE”).

Table 17: Modbus variables: Energy (Table 2)�

Description

Total values

Imported active energy 0x0100 0x010C 32 bits Wh

Exported active energy 0x0102 0x010E 32 bits Wh

Q1 reactive energy 0x0104 0x0110 32 bits varh

Q2 reactive energy 0x0106 0x0112 32 bits varh

Q3 reactive energy 0x0108 0x0114 32 bits varh

Q4 reactive energy 0x010A 0x0116 32 bits varh

Instruction Manual

Address

Tariff 1 Tariff 2

Size Units

43

Tabla 17 (Continuación): Variables Modbus : Energías (Tabla 2)�

Description

Partial values

Partial imported active energy 0x0120 0x012C 32 bits Wh

Partial exported active energy 0x0122 0x012E 32 bits Wh

Q1 partial reactive energy 0x0124 0x0130 32 bits varh

Q2 partial reactive energy 0x0126 0x0132 32 bits varh

Q3 partial reactive energy 0x0128 0x0134 32 bits varh

Q4 partial reactive energy 0x012A 0x0136 32 bits varh

Tariff 1 Tariff 2

7�2�3�2�- Partial energy reset

The 0x05 function is implemented for this variable.

Table 18: Modbus variables: Energy

Description Address Activation

Partial energy reset 0x0800 0xFF00

Address

CEM-C31

Size Units

7�2�3�3�- Instantaneous values

The Read function is implemented for these variables.

Table 19: Modbus variables: Instantaneous values�

Description Address Size Units

Phase 1 voltage 0x0732 32 bits V (1 primary decimal place)

Phase 2 voltage 0x0734 32 bits V (1 primary decimal place)

Phase 3 voltage 0x0736 32 bits V (1 primary decimal place)

Phase 1 current 0x0738 32 bits A (2 primary decimal places)

Phase 2 current 0x073A 32 bits A (2 primary decimal places)

Phase 3 current 0x073C 32 bits A (2 primary decimal places)

Phase 1 cos φ 0x073E 32 bits 2 decimal places

Phase 2 cos φ 0x0740 32 bits 2 decimal places

Phase 3 cos φ 0x0742 32 bits 2 decimal places

Phase 1 active power 0x0746 32 bits W

Phase 2 active power 0x0748 32 bits W

Phase 3 active power 0x074A 32 bits W

Total active power 0x074C 32 bits W

Phase 1 reactive power 0x074E 32 bits var

Phase 2 reactive power 0x0750 32 bits var

Phase 3 reactive power 0x0752 32 bits var

Total reactive power 0x0754 32 bits var

Phase 1 apparent power 0x0756 32 bits VA

Phase 2 apparent power 0x0758 32 bits VA

Phase 3 apparent power 0x075A 32 bits VA

Total apparent power 0x075C 32 bits VA

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Instruction Manual

CEM-C31

7�2�3�4�- Digital input (CEM-C31-485-DS)

The Read function is implemented for these variables.

Table 20: Modbus variables: Digital imput

Description Address Size

Digital Input status 0x0020 16 bits

Total impulse count 0x0180 32 bits

Partial impulse count 0x0182 32 bits

7�2�3�5�- Operating time, cost and KgCO2 atmospheric emissions

The Read function is implemented for these variables.

Table 21: Modbus variables: Operating time, costs and KgCO

Description Address Size Units

Cost of the partial consumption 0x00C0 32 bits -

KgCO2 atmospheric emissions of the partial consumption 0x00C2 32 bits -

Hours of partial operation in seconds 0x00C4 32 bits -

Hours of total operation in seconds 0x00C6 32 bits -

2

7�2�3�6�- Other parameters

The Read function is implemented for these variables.

Table 22: Modbus variables: Other parameters�

Description Address Size Units

Energy meter model

Serial no 0x0060 32 bits -

Identier ID no. 0x0068 32 bits

Higher rmware version 0x0050 16 bits -

Lower rmware version 0x0051 16 bits -

Revised rmware version 0x0052 16 bits -

(16)

Energy meter model description table, Table 23�

Options Description

Connection mode 4 wires 4

Accuracy

Measurement voltage

Current measurement

(16)

Energy meter rmware version

Table 23: Energy meter model description table�

Class B active / Does not measure reactive energy

Class B active / Class 2.0 reactive 12

3x127/220 V N

3x230/400 V

3x57/100 ... 3x230/400 V V

3x57/100 V L

3x63.5/110 V M

Transformer 5(10) A

Transformer 5(6) A

0xF010 6x16 bits 12 bytes in ASCII format

bytes in ASCII

format

10

Q

T5 T6

Instruction Manual

45

Table 23 (Continuation): Energy meter model description table�

Opciones

bytes en formato

50Hz

Frequency

60 Hz

Automatic (50/60Hz) C

Without communications 0

Communications

Side optical service port 1

RS-485 2

Expansion

Without inputs/outputs 0

Input/Output (Optocoupler) 1

Model Box for assembly on DIN rail E

2 quadrants 0

Number of quadrants

4 quadrants 1

Storage in both directions 2

Additional features No special features 0

CEM-C31

ASCII

A

B

7�2�3�7�- Conguration variables

The Read and Write functions are implemented for these variables.

Table 24:Modbus conguration variables CEM-C31-485-xx�

Description Address Size Valid data range

Voltage primary 0x044C 32 bits - -

Voltage secondary 0x044E 32 bits - -

Current primary 0x0450 32 bits - -

Current secondary 0x0452 32 bits - -

Impulse output weight 0x0081 16 bits Wh/impulse 0 ... 99999 -

Impulse output type 0x0080 16 bits 0: Active energy, 1: Reactive energy 0

Digital input type 0x0454 16 bits 0: Tariff, 1: impulse counter 0

Modbus address 0x03E8 16 bits 1 ... 254 1

Transmission speed

(Baudrate)

Communications conguration 0x03EA 16 bits

Display visualisation 0x00B4 16 bits The variable format is displayed in Table 25 -

Backlight 0x00B5 16 bits 0 ... 120 60 s

Cost per kWh 0x00B0 32 bits

KgCO

2

0x03E9 16 bits 0: 9600, 1:19200, 2: 38400 0: 9600

0: 8N1 ( 8 bits - No parity -1 stop bit) 1: 8E1 ( 8 bits - Even parity -1 stop bit) 2: 8O1 ( 8 bits - Odd parity -1 stop bit) 3: 8N2 ( 8 bits - No parity -2 stop bit) 4: 8E2 ( 8 bits - Even parity -2 stop bit) 5: 8O2 ( 8 bits - Odd parity -2 stop bit)

0.0000 ... 9999.9999 with 4 decimal places of resolution

0x00B2 32 bits

0.0000 ... 9.0000 with 4 decimal places of resolution

Default

value

0

-

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Instruction Manual

CEM-C31

Table 25: Variable format Display Visualisation�

Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

1: Impulse 1: Tariffs

1: Efciency

factors

1: Reactive

Energy

1: Partial Energies

Instruction Manual

47

8�- TECHNICAL FEATURES

Power supply

Mode Auxiliary

CEM-C31

CEM-C31-T1-MID

Rated voltage

CEM-C31-485-T1-MID

CEM-C31-485-DS-MID

230 V ~ 230 V ~ / 400 V ~

Tolerance ± 20 %

Frequency 50...60Hz

Consumption

< 10VA (In, Vref (without auxiliary services))

< 2 W

Voltage Measurement

Connection

Three-phase

Reference voltages 3x57/100 ... 3x230/400V ~

Frequency

Self-consumption of the voltage circuit

(17)

according to version.

(17)

50 Hz, 60 Hz or 50/60 Hz

< 10VA (In, Vref (without auxiliary services))

Current measurement

< 2 W

(17)

Current (Ib / Iref) 5 A

Maximum current (Imax) 10 A

Start-up current 0.04% de Itr

Self-consumption of the current circuit 0.3 VA @ 10 A

Itr 0.250 A

Ist 0.010 A

Imin 0.050 A

Maximum overcurrent time ( 20xImax) ( according to EN-50470-3)

500 ms

CEM-C31-T1

CEM-C31-485-T1

CEM-C31-485-DS

(17)

Accuracy

Active Energy

CEM-C31-T1-MID

CEM-C31-485-T1-MID

CEM-C31-485-DS-MID

CEM-C31-T1

CEM-C31-485-T1

CEM-C31-485-DS

Class B (EN 50470) Class 1 (IEC 62053-21)

Reactive Energy Class 2.0 (IEC 62053-23)

Insulation

AC voltage 4kV RMS 50Hz during 1 minute

Overimpulse

1�2/50ms 0R source impedance 6 kV at 60º and 240º, with positive and negative polarization

Calculation and processing

Microprocessor ARM

AD converter 16-bit

Impulse output (Models CEM-C31-T1 and CEM-C31-485-T1)

Type Optocoupler

Operation Emission of impulses proportional to the energy

Electrical features Max. 24V 50mA

48

Instruction Manual

CEM-C31

(Continuation) Impulse output (Models CEM-C31-T1 and CEM-C31-485-T1)

CEM-C31-T1-MID

Impulse ON time

No� of maximum impulses per second 12

Digital input (Model CEM-C31-485-DS)

Type Self-powered a +5V (Vmax: 5.1V, Imax: 8.5 mA)

Operation Tariff selection

Maximum impedance 800 Ω

Pulse width Ton ≥ 30 ms, Toff ≥ 30 ms

IR port (service port) (Model CEM-C31-T1)

Hardware EN62056-21

Communications protocol Modbus

Baud rate 9600 bps

Data bits 8

Stop bits 1

Parity no parity

CEM-C31-485-T1-MID

40 ms 200 ms

CEM-C31-T1

CEM-C31-485-T1

RS-485 Communications (Models CEM-C31-485-T1 and CEM-C31-485-DS)

Hardware RS-485

Protocol Modbus

Baud rate 9600, 19200, 38400 bps

Data bits 8

Stop bits 1

Parity without -even - odd

User interface

Display LCD

Maximum counter value 999999.9 kWh

Buttons 2 buttons

LEDs

Environmental features

Operating temperature -25ºC... +70ºC

Storage temperature -35ºC... +80ºC

Relative humidity (non-condensing) 5 ... 95%

Maximum altitude 2,000 m

Mechanical features

Dimensions ( Figure 20) in mm. IEC60715

Weight

Enclosure EN50022

Protection degree

CEM-C31-T1 CEM-C31-485-xx

2 LED: kWh, 20000 imp/kWh

kvarh, 20000 imp/kvarh

230 g. 233.5 g.

IP 51 installed

IP40 in terminal area

Standards

Electrical energy metering equipment (AC)� Part 1: General requirements, tests and test conditions� Metering equipment (indexes of classes A, B and C)UNE EN 50470-1

Instruction Manual

49

(Continuation) Standards

Electrical energy metering equipment (AC)� Part 3: Particular requirements�

Static active energy meters (classication indexes A, B and C).

Electrical energy metering equipment (AC)� Particular requirements� Part 21: Static active energy meters (classes 1 and 2)

Electrical energy metering equipment (AC)� Particular requirements� Part 23: Static reactive energy meters (classes 2 and 3)�

64

CEM-C31

UNE EN 50470-3

IEC 62053-21

IEC 62053-23

90

70

Figure 20: Dimensions of the CEM-C31�

5 44

35.5

45

65

50

Instruction Manual

CEM-C31

9�- MAINTENANCE AND TECHNICAL SERVICE

In the case of any query in relation to device operation or malfunction, please contact the

CIRCUTOR, SA Technical Support Service.

Technical Assistance Service

Vial Sant Jordi, s/n, 08232 - Viladecavalls (Barcelona) Tel: 902 449 459 ( España) / +34 937 452 919 (outside of Spain) email: sat@circutor.com

10�- GUARANTEE

CIRCUTOR guarantees its products against any manufacturing defect for two years after the

delivery of the units.

CIRCUTOR will repair or replace any defective factory product returned during the guarantee period.

• No returns will be accepted and no unit will be repaired or replaced if it is not accompanied by a report indicating the defect detected or the reason for the return.

•The guarantee will be void if the units has been improperly used or the storage, installation and maintenance instructions listed in this manual have not been followed. “Improper usage” is de ned as any operating or storage condition contrary to the national electrical code or that surpasses the limits indicated in the technical and environmental features of this manual.

• CIRCUTOR accepts no liability due to the possible damage to the unit or other parts of the installation, nor will it cover any possible sanctions derived from a possible failure, improper installation or “improper usage” of the unit. Consequently, this guarantee does not apply to failures occurring in the following cases:

- Overvoltages and/or electrical disturbances in the supply;

- Water, if the product does not have the appropriate IP classi cation;

- Poor ventilation and/or excessive temperatures;

- Improper installation and/or lack of maintenance;

- Buyer repairs or modi cations without the manufacturer’s authorisation.

Instruction Manual

51

11�- CE CERTIFICATE

CEM-C31

52

Instruction Manual

CEM-C31

Instruction Manual

53

CEM-C31

54

Instruction Manual

CEM-C31

Instruction Manual

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CEM-C31

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Instruction Manual

CEM-C31

Instruction Manual

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CIRCUTOR, SA

Vial Sant Jordi, s/n 08232 -Viladecavalls (Barcelona) Tel.: (+34) 93 745 29 00 - Fax: (+34) 93 745 29 14 www.circutor.com central@circutor.com

CIRCUTOR CEM-C31-T1, CEM-C31-T1-MID, CEM-C31-485-T1, CEM-C31-485-T1-MID, CEM-C31-485-DS Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY PRECAUTIONS

DISCLAIMER

CONTENTS

REVISION LOG

SYMBOLS

1�- VERIFICATION UPON RECEPTION

2�- PRODUCT DESCRIPTION

3�- DEVICE INSTALLATION

3.1.- PRELIMINARY RECOMMENDATIONS

3�3�1� MODEL CEM-C31-T1

3�3�2� MODEL CEM-C31-485-T1

3�3�3� MODEL CEM-C31-485-DS

3.4.- CONNECTION DIAGRAM

3.5.- CONNECTIONS

4�- OPERATION

4.1.- BUTTON FUNCTIONS

4.2.- DISPLAY

4.3.- LED INDICATORS

4.4.- IMPULSE OUTPUT (CEM-C31-T1 and CEM-C31-485-T1 models)

4.5.- DIGITAL INPUT (CEM-C31-485-DS)

5�- DISPLAY

5.1.- DISPLAY IN STANDBY MODE

5.2.- DISPLAY IN READING MODE

5.3.- INSTANTANEOUS VALUE DISPLAY

5.4.- PARTIAL ENERGY DISPLAY

5.5.- IMPULSE COUNT DISPLAY (CEM-C31-485-DS)

5.6.- MANUFACTURER INFORMATION SCREEN

6�- CONFIGURATION

6.1.- RELEVANT PARAMETERS CONFIGURATION

6�1�2� VOLTAGE SECONDARY TRANSFORMATION RATIO

6�1�3� CURRENT PRIMARY TRANSFORMATION RATIO

6�1�4� CURRENT SECONDARY TRANSFORMATION RATIO

6�1�5� EXITING THE SETUP MENU

6�2�1� IMPULSE OUTPUT WEIGHT

6�2�2� IMPULSE OUTPUT TYPE

6�2�3�- DIGITAL INPUT TYPE

6�2�4� PERIPHERAL ADDRESS

6�2�5� TRANSMISSION SPEED ( BAUD RATE)

6�2�6� TYPE OF COMMUNICATIONS

6�2�7� DISPLAY

6�2�8� BACKLIGHT

6�2�9� ENERGY COST

6�2�10� CO2 EMISSIONS

6�2�11� PARTIAL ENERGY METER DELETION

6�2�12� EXITING THE SETUP MENU

7�2�1�- CONNECTION

7�2�2�- MODBUS PROTOCOL

7�2�3�- VARIABLES MODBUS

8�- TECHNICAL FEATURES

9�- MAINTENANCE AND TECHNICAL SERVICE

10�- GUARANTEE

11�- CE CERTIFICATE