Circutor ReadWatt Series Manual do Utilizador Página 1

INSTRUCTION MANUAL(M018B01-03-14B)Impulse sensorReadWatt

3.3.- UNIT TERMINALSThe unit has a RJ45 connector with the following list of terminals (Table 2):Table 2:List of ReadWatt terminals�Unit terminals1:

3.4.- CONNECTION DIAGRAM3�4�1�- RS-485 CONNECTIONUse an intelligent RS-232 to RS-485 network protocol converter to establish the com

3�4�2�- PULSE OUTPUT CONNECTION+VCC76IN76COMMON+VCCRABFigure 7: Pulse Output connection�12ReadWattInstruction Manual

4�- OPERATION ReadWatt reads the light impulses from the meter, whose value is shown in real time on a MODBUS parameter, which can be queried by anot

4.3- COMMUNICATIONSReadWatt has two communications ports, RS-232 and RS-485. Both ports can be used simul-taneously.The transmission speed, Baudra

4�3�3�- WRITE COMMANDSReadWatt supports the integer type write functions: 0x10. The unit's MODBUS variables are specied in Table 4.Example:

(1)Transformation ratio:The pulses generated by a billing meter are always associated to the secondary, so that the Conversion Ratio (Transformation R

AddressFunc-tionInitial log Log no� No� bytes Unit serial no� Data CRC00 10 0BBA 0001 02 SSSS SSSS DDDD CRCNote: The serial number must be hexadecima

5�- TECHNICAL FEATURESPower supplyRated voltage5 V ... 24 V Tolerance ± 5%Consumption < 0.5 WMemory Setup, logs EEPROM and FRAM type non-volatil

32.1525.6Figure 10: ReadWatt dimensions 19Instruction ManualReadWatt

2ReadWattInstruction Manual

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 CERTIFICATE21Instruction ManualReadWatt

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

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

CONTENTS SAFETY PRECAUTIONS �����������������������������������������������������������������������������������������������������3 DISCLAIMER �

REVISION LOGTable 1: Revision log�Date Revision Description03/14 M018B01-03-14A Initial Version04/14 M018B01-03-14B Changes : Points 3.4, 4.3.4 and

1�- VERIFICATION UPON RECEPTIONCheck the following points when you receive the unit: a) The unit meets the specications described in your order.

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 the energy meter.The rst step for installing ReadWatt is to separate the two parts of the Velcro st

Now simply place the ReadWatt on the energy meter's Velcro strap (Figure 3). Figure 3: ReadWatt installed�Finally, connect the cable