Circutor CEM-C31-T1 Instruction Manual
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Circutor CEM-C31-T1 Instruction Manual

Multifunctional energy meter
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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
(M017B01-03-23A)

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Summary of Contents for Circutor CEM-C31-T1

  • Page 1 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 (M017B01-03-23A)
  • Page 2 CEM-C31 Instruction Manual...

  • Page 3: Safety Precautions

    CIRCUTOR S�A�U� reserves the right to make modifications to the device or the unit specifications set out in this instruction manual without prior notice. CIRCUTOR S�A�U� on its web site, supplies its customers with the latest versions of the device specifi- cations and the most updated manuals.

  • Page 4: Table Of Contents

    4�1�- BUTTON FUNCTIONS ���������������������������������������������������������������������������������������������������������������������������������������������� 14 4�2�- DISPLAY ����������������������������������������������������������������������������������������������������������������������������������������������������������������� 15 4�3�- LED INDICATORS ���������������������������������������������������������������������������������������������������������������������������������������������������� 16 4�4�- IMPULSE OUTPUT (CEM-C31-T1 and CEM-C31-485-T1 models) ������������������������������������������������������������������������� 16 4�5�- DIGITAL INPUT (CEM-C31-485-DS) ���������������������������������������������������������������������������������������������������������������������� 17 5�- DISPLAY ������������������������������������������������������������������������������������������������������������������������������������������������������������������������� 18 5�1�- DISPLAY IN STANDBY MODE ���������������������������������������������������������������������������������������������������������������������������������� 18 5�2�- DISPLAY IN READING MODE ����������������������������������������������������������������������������������������������������������������������������������...

  • Page 5: Revision Log

    CEM-C31 REVISION LOG Table 1: Revision log� Date Revision Description 07/14 M017B01-03-14A Initial Version Changes in the following sections: 11/14 M017B01-03-14B 4.2. - 4.6 Changes in the following sections: 06/15 M017B01-03-15A 2 - 3.5. - 4.4.1. - 4.4.2. - 4.5. - 4.6. - 4.7. - 5 Changes in the following sections: 01/17 M017B01-03-17A...

  • Page 6: 1�- Verification Upon Reception

    - 2 terminal covers, to cover the top of the terminal box and the fixing 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). Instruction Manual...

  • Page 7: 2�1�- Energy Meter Versions

    CEM-C31 2�1�- ENERGY METER VERSIONS The following table shows all the possible options that could be available for the CEM-C31. This table is generic, which does not indicate that all the versions reflected in it currently exist. Table 3: Energy meter versions� ENERGY METER TYPE Connection mode 4 wires...

  • Page 8: 3�- Device Installation

    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.

  • Page 9: 3�2�- Installation

    Do not use the device until it is fully installed. 3�3�- DEVICE TERMINALS 3�3�1� MODEL CEM-C31-T1 Table 4:List of CEM-C31-T1 terminals� Device terminals 1 : S1, Current input L1 8 : L3, Voltage input L3...

  • Page 10: 3�3�2� Model Cem-C31-485-T1

    CEM-C31 3�3�2� MODEL CEM-C31-485-T1 Table 5:List of CEM-C31-485-T1 terminals� Device 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...

  • Page 11: 3�4�- Connection Diagram

    CEM-C31 3�4�- CONNECTION DIAGRAM Power Supply LOAD Figure 3: Three-phase connection diagram, CEM-C31� Power Supply LOAD Figure 4: Single-phase connection diagram, CEM-C31� Instruction Manual...

  • Page 12: 3�5�- Connections

    CEM-C31 3�5�- CONNECTIONS The CEM-C31 has terminal covers to cover the top of the terminal box and the fixing screws ( Figure 5 Figure 5: Terminal covers of the CEM-C31� The fixing screws are of the mixed type, allowing the use of PH2 and flat head screwdrivers. Table 7:CEM-C31 connections�...
  • Page 13 CEM-C31 Once the device is powered, attach the safety label ( ) to terminals 13 and 14 to Figure 7 seal the device. Figure 7: Attaching the safety label� Instruction Manual...

  • Page 14: 4�- Operation

    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. ...

  • Page 15: 4�2�- Display

    CEM-C31 4�2�- DISPLAY The device has an LCD where all parameters are displayed. The display is divided into three areas Figure 9 COM MAX DEM HOURS kgC0 COST PAR T1 T2 Data line Indicator Units kVArh Figure 9: CEM-C31 Display areas ...

  • Page 16: 4�3�- Led Indicators

    Active LED Reactive LED Figure 10: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 pro- grammed rate. (See “6.2.1. IMPULSE OUTPUT WEIGHT”...

  • Page 17: 4�5�- Digital Input (Cem-C31-485-Ds)

    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 ), to calculate Table 6 other supplies or select tariffs. 5 V DC COMM 470 Ω Figure 11: Digital input, CEM-C31-485-DS� Active Tariff selection: Table 9: Tariff selection�...

  • Page 18: 5�- Display

     Display in reading mode Note: In the event of a critical error in the device, the word “Error” appears on the display. In this case, the device can no longer be used and you must contact the TAS CIRCUTOR. Figure 12: Error screen�...
  • Page 19 CEM-C31 Table 10 (Continuation): Standby mode displays (Table 1) Screen Parameters Reactive energy quadrant L- total Only displayed in the 4-quadrant version. Reactive energy quadrant C- total Only displayed in the 4-quadrant version. Reactive energy quadrant C+ total The impulse count option for the CEM-C31-485-DS model can be configured in section “6.2.3.- DIGITAL INPUT TYPE”...
  • Page 20 CEM-C31 Table 11 (Continuation) : Standby mode displays (Table 2)� Screen Parameters Imported active energy Tariff 2 Exported active energy Tariff 2 Only displayed in the 4-quadrant version. Reactive energy quadrant L+ Tariff 2 kVArh Reactive energy quadrant L- Tariff 2 Only displayed in the 4-quadrant version.

  • Page 21: 5�2�- Display In Reading Mode

    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. ...

  • Page 22: 5�3�- Instantaneous Value Display

    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 14 Figure 14: Instantaneous Value main screen� Long press the button to open the different screens.
  • Page 23 Parameters Active three-phase power Reactive three-phase power Apparent three-phase power L1 Power Factor L2 Power Factor L3 Power Factor CEM-C31-T1, CEM-C31-485-T1, CEM-C31-485-DS models (9): Hours of operation from manufacture HOURS CEM-C31-485-DS model (10) Tariff 1 operating hours, from manufacture HOURS...

  • Page 24: 5�4�- Partial Energy Display

    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 13:Partial energy screens (Table 1)� Models CEM-C31-T1, CEM-C31-485-T1, CEM-C31-485-DS (Impulse count option (11) Screen Parameters...
  • Page 25 CEM-C31 Table 13 (Continuation): Partial energy screens (Table 1)� Screen Parameters Partial reactive energy, quadrant 3 ( C-) (12) Only displayed in the 4-quadrant version. Partial reactive energy, quadrant 4 ( C+) (12) Hours in partial operation (since the last partial reset ) Cost of the partial active energy consumed (since the last partial reset ) (13)
  • Page 26 CEM-C31 Tabla 14 (Continuation): Partial energy screens (Table 2)� Screen Parameters Partial reactive energy, quadrant 2 (L-) Tariff 1. (15) Only displayed in the 4-quadrant version. kVArh Partial reactive energy, quadrant 3 (C-) Tariff 1. (15) Only displayed in the 4-quadrant version. kVArh Partial reactive energy, quadrant 4 (C+) Tariff 1.

  • Page 27: 5�5�- Impulse Count Display (Cem-C31-485

    CEM-C31 Tabla 14 (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 ) (16) kgC0 PAR T1 emissions into the atmosphere Tariff 1 (since the last partial reset ) (16) HOURS Hours in partial operation Tariff 2.

  • Page 28: 5�6�- Manufacturer Information Screen

    CEM-C31 Short press the button to browse the different screens ( Table 15 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 15: Impulse count screens� Screen Parameters Total impulse count...
  • Page 29 Active energy with resolution in Wh Reactive energy with resolution varh 32-bit CRC The screen is displayed if it is a CEM-C31-T1 and there is a CEM M-RS485 (communications interface for the (18) CEM family of devices) connected to the device.

  • Page 30: 6�- Configuration

    CEM-C31 6.- CONFIGURATION The CEM-C31 have 2 configuration menus: Metrologically relevant parameters configuration menu. General configuration menu. 6�1�- RELEVANT PARAMETERS CONFIGURATION The most relevant parameters in metrological terms are configured in the programming menu. Short press the button to access this menu. This button is sealable, see to restrict access to the programming proce- “4.1.- BUTTON FUNCTIONS”,...

  • Page 31: 6�1�2� Voltage Secondary Transformation Ratio

    CEM-C31 After a few seconds viewing the screen shown on , the system returns to the main screen of Figure 18 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.

  • Page 32: 6�1�4� Current Secondary Transformation Ratio

    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 modified. To validate the data, move to the last digit and long press the button;...

  • Page 33: 6�2�- General Configuration Menu

    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.

  • Page 34: 6�2�2� Impulse Output Type

    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.

  • Page 35: 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.

  • Page 36: 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.

  • Page 37: 6�2�7� Display

    CEM-C31 , the system returns to the Communications After a few seconds viewing the screen shown on Figure 20 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�...
  • Page 38 CEM-C31 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.

  • Page 39: 6�2�8� Backlight

    CEM-C31 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: This screen shows the different options: : Backlight always ON. Off : Backlight always OFF.

  • Page 40: 6�2�10� Co Emissions

    CEM-C31 To validate the data, move to the last digit and long press the button; the validation screen will appear ( ) indicating that the programming value has been saved. Figure 20 After a few seconds viewing the screen shown on , the system returns to the Energy cost Figure 20 programming main screen.

  • Page 41: 6�2�11� Partial Energy Meter Deletion

    CEM-C31 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 ( ) will be displayed next, indicating that the energy Figure 20...

  • Page 42: 7�- Communications

    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 MOD- BUS RTU ®...

  • Page 43: 7�2�2�- Modbus Protocol

    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.

  • Page 44: 7�2�3�- Variables Modbus

    CEM-C31 The device will respond to us with the next frame: Initial Address Function Register no� Register 03E8 0001 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.
  • Page 45 CEM-C31 Table 18 (Continuation): Modbus variables: Energy (Table 2)� Model Address Description Size Units Quadrants Quadrants Tariff 1 Tariff 2 Partial values Partial imported active energy 0x0120 0x012C 32 bits    Partial exported active energy 0x0122 0x012E 32 bits ...
  • Page 46 CEM-C31 7�2�3�4�- Digital input (CEM-C31-485-DS) The Read function is implemented for these variables. Table 21: 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 KgCO atmospheric emissions The Read function is implemented for these variables.
  • Page 47 CEM-C31 Table 24 (Continuation): Energy meter model description table� bytes en formato Opciones ASCII 50Hz Frequency 60Hz Automatic (50/60Hz) Without communications Communications Side optical service port RS-485 Without inputs/outputs Expansion Impulse output Digital input Model Box for assembly on DIN rail 2 quadrants Number of quadrants 4 quadrants...
  • Page 48 CEM-C31 Table 26: Variable format Display Visualisation� Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 1: Efficiency 1: Reactive 1: Partial 1: Impulse 1: Tariffs factors Energy Energies Instruction Manual...

  • Page 49: 8�- Technical Features

    1�2/50ms 0R source impedance 6 kV at 60º and 240º, with positive and negative polarization Calculation and processing Microprocessor 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.
  • Page 50 CEM-C31 (Continuation) Impulse output (Models CEM-C31-T1 and CEM-C31-485-T1) CEM-C31-T1-MID CEM-C31-T1 CEM-C31-485-T1-MID CEM-C31-485-T1 Impulse ON time 40 ms 200 ms No� of maximum impulses per second 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...
  • Page 51 CEM-C31 Standards Electrical energy metering equipment (AC)� Part 1: General requirements, tests and UNE EN 50470-1 test conditions� Metering equipment (indexes of classes A, B and C) Electrical energy metering equipment (AC)� Part 3: Particular requirements� Static UNE EN 50470-3 active energy meters (classification indexes A, B and C)�...

  • Page 52: 9�- Maintenance And Technical Service

    CEM-C31 9.- MAINTENANCE AND TECHNICAL SERVICE In the case of any query in relation to device operation or malfunction, please contact the CIRCUTOR S�A�U� Technical Support Service. Technical Assistance Service Vial Sant Jordi, s/n, 08232 - Viladecavalls (Barcelona) Tel: 902 449 459 (Spain) / +34 937 452 919 (outside of Spain) email: sat@circutor.com...

  • Page 53: 10�- Eu Declaration Of Conformity

    CEM-C31 11.- EU DECLARATION OF CONFORMITY Instruction Manual...
  • Page 54 CEM-C31 Instruction Manual...
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  • Page 59 CEM-C31 Instruction Manual...
  • Page 60 CIRCUTOR S.A.U. 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...

This manual is also suitable for:

Cem-c31-t1-midCem-c31-485-t1Cem-c31-485-t1-midCem-c31-485-dsCem-c31-485-ds-mid

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