CIRCUTOR, SA reserves the right to modify features or the product manual without prior notifi cation. DISCLAIMER CIRCUTOR, SA reserves the right to make modifi cations to the device or the unit specifi ca- tions set out in this instruction manual without prior notice.
CIRCUTOR's after-sales service. 2�- PRODUCT DESCRIPTION The CEM-C30 static three-phase energy meter measures class B active energy (EN50470) and (optional) class 2 reactive energy (IEC 62053-23), with optional optical communications for expansion with other modules installed on a DIN rail with a service port.
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CEM-C30 The CEM-C30 is offered in different versions; shows all of the possible options of the Table 2 unit. Table 2: Options of the CEM-C30� Options CEM-C30 Code Connection mode 4 wires Accuracy Class B Active / Does not measure reactive energy Class B Active/ Class 2.0 Reactive energy...
The CEM-C30 unit must be installed by authorised and qualified staff. The power supply plug must be disconnected and measuring systems switched off before handling, altering the connections or replacing the unit.
Do not use the unit until it is fully installed. 3.3.- UNIT TERMINALS Table 3:List of CEM-C30 terminals� Unit terminals 1 : S1, Current input L1 8 : L3, Voltage input L3...
CEM-C30 3.5.- CONNECTIONS The CEM-C30 has terminal covers to cover the top of the terminal box and the fixing screws Figure 3 Figure 3: Terminal covers of the CEM-C30� The fixing screws are of the mixed type, allowing the use of PZ2 and flat head screwdrivers.
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CEM-C30 When the unit is connected to the mains, attach the safety label ( ) to Figure 6 terminals 13 and 14, in order to prevent the risk of electric shock caused by an involuntary direct contact. Figure 5: Attaching the safety label�...
Power factor, PF 4.1.- BUTTON FUNCTIONS The CEM-C30 has 2 buttons that allow you to browse the different screens and program the unit. button can be sealed to prevent access to the programming of the most relevant pa- rameters.
The unit has an LCD where all parameters are displayed. The display is divided into three areas ( Figure 7 Figure 7: CEM-C30 Display areas Data line, displaying the values measured by the unit. Units, where the unit of the magnitude being viewed is shown.
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 Reactive LED Figure 8:LED Indicators of the CEM-C30� Instruction Manual...
4�4�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-C30 buttons. 7 different parameters are viewed in this mode, see...
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CEM-C30 Screen Parameters Reactive energy quadrant C+ total Hours of operation from manufacture The standby mode is activated again when no button is pressed for 60 seconds. Instruction Manual...
CEM-C30 4�4�2� DISPLAY IN READING MODE The reading mode is activated by a long press on the button. In reading mode you can: View the energies of the partial energy meters. View the voltage, current, active power, apparent power and power factor of the installation.
CEM-C30 4.5.- PARTIAL ENERGY DISPLAY To open the screens where the partial energy meter energies are viewed, long press the button on the display in standby mode. The home screen is displayed Figure 10 Figure 10: Partial energy main screen�...
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CEM-C30 Screen Parameters Partial reactive energy, quadrant 4 Hours in partial operation (since the last partial reset ) Cost of the partial active energy consumed (since the last partial reset ) emissions into the atmosphere. (since the last partial reset ) If a Cost value has been programmed in the setup menu (see “4.7.6.
CEM-C30 4.6.- INSTANTANEOUS VALUE DISPLAY Long press the button in the standby mode screen to open these display screens. Short press the button to display the instantaneous value home screen, Figure 11 Figure 11: Instantaneous Value main screen� Long press the button to open the different screens.
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CEM-C30 Screen Parameters L3 Current Active three-phase power Reactive three-phase power Apparent three-phase power L1 Power Factor L2 Power Factor L3 Power Factor Instruction Manual...
CEM-C30 4.7.- CONFIGURATION In the setup menu you can: Program the weight and type of impulse output Program the communications. Program the cost of the energy and the CO emissions Partial energy meter deletion. The standby mode is activated again when no button is pressed for 60 seconds.
CEM-C30 Figure 13: Validation screen� After a few seconds viewing the screen shown on , the system returns to the Impulse Figure 13 output weight programming main screen. Minimum value: 99999. Maximum value: 0. Short press the button to access the next programming step.
CEM-C30 To write or modify the value, short press the button repeatedly, increasing the value of the flashing digit. When the desired value is shown on the screen, move onto the next digit with a long press on button, allowing the remaining values to be modified.
CEM-C30 4�7�5� Type of communications Note: This is only displayed if there is a (communications interface for the CEM CEM M-RS485 family of units) connected to the unit. This is the home screen for selecting the number of bits, the parity and the number of stop bits of the communications frame.
CEM-C30 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 13 After a few seconds viewing the screen shown on...
CEM-C30 4�7�8� Partial energy meter deletion 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 Figure 13 the energy meters were deleted correctly.
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CEM-C30 Screen Parameters Unit model Version Communications protocol Communications protocol version Active energy with resolution in Wh Reactive energy with resolution varh 32-bit CRC The screen is displayed if there is a CEM M-RS485 (communications interface for units of the CEM family) connected to the unit.
CEM-C30 4.9.- PROGRAMMING 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 “4�1�- BUTTON FUNCTIONS”, procedures. The standby mode is activated again when no button is pressed for 60 seconds or by short pressing the button.
CEM-C30 4�9�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 flashing digit.
CEM-C30 To validate the data, move to the last digit and long press the button; the validation screen will appear ( ) indicating that the setup value has been saved. Figure 15 After a few seconds viewing the screen shown on...
CEM-C30 4.10.- IMPULSE OUTPUT The energy meter has optocoupler type outputs capable of generating impulses at a previously programmed rate. (See “4�7�1� Impulse output weight” ”4�7�2� Impulse output type” 4.11.- INFRARED COMMUNICATIONS PORT In all versions, the unit has a serial optical communications port, in compliance with the UNE EN 62056-21:2003 Standard.
0.3 VA @ 10 A 0.250 A 0.250 A 0.010 A 0.010 A Imin 0.050 A 0.050 A Accuracy CEM-C30 MID CEM-C30 Active Energy Class B (EN 50470) Class 1 (IEC 62053-21) Reactive Energy Class 2.0 (IEC 62053-23) Insulation AC voltage...
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-35ºC... +80ºC Relative humidity (non-condensing) 5 ... 95% Maximum altitude 2,000 m Mechanical features Dimensions ( Figure 16) IEC60715 Weight 230 g. Enclosure EN50022 IP 51 installed Protection degree IP40 in terminal area Figure 16: Dimensions of the CEM-C30� Instruction Manual...
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CEM-C30 Standards Electrical energy metering equipment (AC)� Part 1: General require- ments, tests and test conditions� Metering equipment (indexes of class- UNE EN 50470-1:2007 es A, B and C) Electrical energy metering equipment (AC)� Part 3: Particular require- UNE EN 50470-3:2007 ments.
• 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 pos- sible failure, improper installation or “improper usage”...
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