Circutor MDC-4 Manuale Utente

INSTRUCTION MANUAL(M013B01-03-15C)Maximum demand controlMDC-4

3.4.- CONNECTION DIAGRAM3�4�1�- Three-phase network measurement with a 4-wire connection�MDC-4CPUOUT 4OUT 3OUT 2OUT 1PowerSupplyVL1L1L2L33P12P1

3�4�2�- Three-phase network measurement with a 3-wire connection�MDC-4CPUOUT 4OUT 3OUT 2OUT 1Power SupplyVL1L1L2L33P12P1 1P13P22P2 1P2VL2VL3LOADBrown

3�4�3�- Single-phase network measurement�MDC-4CPUOUT 4OUT 3OUT 2OUT 1PowerSupplyVL1L1NS1S2P1 P2NLOADOUT 1OUT 2OUT 3OUT 4Figure 4: Single-phase network

4�- OPERATION 4.1.- OPERATING PRINCIPLEThe MDC-4 has been designed to control the maximum demand of an installation.The unit is equipped wit

The graph in Figure 6 shows the unit's response: Figure 6: Graph with the response of the MDC-4 4.2.- PARAMETERSThe unit displays the electr

4.3.- KEYS FUNCTIONSThe MDC-4 has 4 keys that allow you to browse the various screens and program the unit.Key functions on the measuring scree

4.5.- LED INDICATORSThe MDC-4 unit features:- A CPU LED, which indicates that the unit is working correctly when it ashes for 1 sec-ond. - Fo

4.6.- DISPLAY IMPROVEMENTSThe unit has two types of screens for viewing:  Maximum demand screens.  Measuring screens.4�6�1�- Maximum demand

4�6�2�- Measuring screens�Use keys and to browse the various screens.The maximum demand screens are viewed by pressing the or keys.Table 7: M

4.7.- OUTPUT RELAYSThe unit has four relays (terminals 8, 9, 10, 11, 12, 13, 14, 15 and 16 in Figure 1) for connecting and disconnecting the in

2MDC-4Instruction Manual

4�8�2� Selecting the maximum demand variable SET PD V P (W) In this step the variable for calc

Press key to access the next programming step.4�8�6� Deleting the energy value Clea Energy NO

When the desired value is shown on the screen, move onto the next digit by pressing the key to modify the remaining values.Maximum value: 99 %.Minim

In the next steps, the level, hysteresis and connection and disconnection delays are pro-grammed, as well as the status of the contactors for output r

4�9�3� Year SET YEA 2014 In this step the current year is programmed.Press the button

5�- TECHNICAL FEATURESAC power supplyRated voltage 110 ...240 V ~Frequency 50 / 60HzConsumption 4...6 VA Installation category CAT III 300 VVoltage

35.55 254465456590105Figure 8: Dimensions of the MDC-4�StandardsUNE-EN 61010-1:2011 Safety requirements for electrical equipment for measurement, con-

6�- MAINTENANCE AND TECHNICAL SERVICE 7�- GUARANTEE• No returns will be accepted and no unit will be repaired or replaced if it is not ac-companied b

8�- CE CERTIFICATE28MDC-4Instruction Manual

29Instruction ManualMDC-4

SAFETY PRECAUTIONS DISCLAIMERCIRCUTOR, SA reserves the right to make modi cations to the device or the unit speci ca-tions set out in this instruct

CIRCUTOR, SA Vial Sant Jordi, s/n08232 -Viladecavalls (Barcelona)Tel.: (+34) 93 745 29 00 - Fax: (+34) 93 745 29 14 www.circutor.es central@circuto

CONTENTSSAFETY PRECAUTIONS ��������������������������������������������������������������������������������������������������������������������������

REVISION LOGTable 1: Revision log�Date Revision Description09/14 M013B01-03-14A Initial Version03/15 M013B01-03-15AChanges in the following sections:

1�- VERIFICATION UPON RECEPTIONCheck the following points upon receiving the unit: a) The unit meets the specications described in your order. b)

3�- UNIT INSTALLATION 3.1.- PRIOR RECOMMENDATIONSIn order to use the unit safely, it is critical that individuals who handle it follow the safe

3.2.- INSTALLATIONThe unit is installed on a DIN rail. The unit must be mounted inside an electric panel.The unit must be connected to a power

3.3.- UNIT TERMINALSTable 2:List of MDC-4 terminalsUnit terminals1: VL1, Voltage input L1 13, 14: Relay output 23: VL2, Voltage input L2 15, 16: Rel