ICD MFM 9012 Operating Manual Download

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7.1 Communication connection diagram

When connecting the meters in multidrop communication

network, the following methods are to be adopted for trouble free

communication.

Loop Topology

In this method, the communication continous to work even if

there is a breakage in any one of the Loop. Termination resistors are

not required.

Straight line Topology

In this method termination resistor RT (60 -100



) of value

equal to characteristic Impedance of the cable used may be required

to avoid reflection loses.

It is recommended to use proper & suitable communication cable

for trouble free communication.

Master

D+ D-

....

Meter 1

D+ D-

Meter 2

D+ D-

Meter 3

D+ D-

Meter N

D+ D-

Master

D+ D-

Meter 1

D+ D-

Meter 2

D+ D-

Meter 3

D+ D-

Meter N

D+ D-

Meter 1

D+ D-

Meter 2

D+ D-

Meter 3

D+ D-

Meter N

D+ D-

Summary of Contents for MFM 9012

Page 1: ...TED Old No 10 New No 33 Mettukuppam Road Via Alappakam Road Maduravoyal Chennai 600 095 Phone 4293 4324 4293 4325 FAX 91 44 4293 4355 E mail sales icdipl net website www icdipl net OPERATING MANUAL FOR MULTI FUNCTION METER Model MFM 9012 45mm Depth ...

Page 2: ... 6 4 Front Panel Features 9 4 1 Key Description 10 4 2 Changing the configuration Items 10 5 Programming Instructions 11 6 RUN Mode display pages 14 7 Communication Port Details 16 7 1 Communication connection diagram 18 8 Technical specification class 0 5 Class 1 19 ...

Page 3: ...uickly The front panel is provided with antiglare feature for improved readability The measurement parameters include 3 phase voltage 3 phase current kVA kW kVAr PF Frequency kWh or kVAh All voltage Current Power and energy readings are true R M S including harmonics The power and energy measurement is done for the full four quadrants The energy reading is provided with reverse lock showing only t...

Page 4: ...x the mounting clamps provided with the meter on each side Tighten the fixing clamps with limit amount of force so as to hold the meter in position 2 2 Wiring 2 2 1 Selection of PT CT The measurement of voltage and current is done using the PT voltage and CT current inputs So the accuracy of measurement is determined by the accuracy and phase shift produced by the PT s and CT s so it is recommende...

Page 5: ...e input burden 0 25VA per phase 2 2 3 Current signal connections The Meter current inputs can accept both 5A AC or 1A AC R M S selectable for connecting external CT s The CT Primary Secondary value is field programmable In both the cases the current inputs has over load capability of 120 There are three pairs of terminals marked as IR M L IY M L and IB M L for the connection of external CT s For p...

Page 6: ...stems 3 watt measurement Voltage Input Direct 240V L N 415 L L V AC 20 to 10 Current Input 5 1A provide through 3 CT s L N 90 270V AC DC Auxiliary D D Earth Panel Ground To Load CT s R Y B N Import CT Shorting block M L M L M L R Y B N IR IY IB RS 485 ...

Page 7: ...HT systems 2 watt measurement Voltage Input 110V AC L L Through PT Current Input 5 1A provide through 2 CT s D D Earth Panel Ground To Load CT s R Y B Import CT Shorting block M L M L R Y B IR IB RS 485 L N 90 270V AC DC Auxiliary ...

Page 8: ...wrong readings close to the expected readings The Meter has a built in program to identify the reverse sequences in PTas well as CT wiring A seperate diagnostic display page is provided to view the PT CT Connections IT can be selected by pressing the Shift Key repeatedly If the PT CT wiring are done correctly The diagnostic page as shows as Otherwise the phase in which voltage connections or curre...

Page 9: ...ation port The RxD LED flashes whenever the data is received through communication port and the TxD LED flashes when data is transmitted from the meter These LED s are not provided in the meters without communication port Calibration pulse output is provided through 3mm RED LED in front panel Meter constant is 3200 impulse kWh The front panel is also provided with 4 keys The key descriptions are g...

Page 10: ... key It can be altered by using shift Increment Enter key The shift key is used to select the digit one by one The selected digit is shown by flashing that digit The Increment key is used to increment the selected digit The increment key Increments the digit from 0 to 9 and then wraps down to zero once again Shift and Increment keys are also used for selecting the required parameter Once the requi...

Page 11: ...tion of configuration items by unauthorised persons The configuration Items of the meter may be changed by following the sequence given below With power applied to the meter hold in the keys shift and Incr together for 3 seconds The display Indicates enter password The password set in the menu new password has to be entered by using Shift Incr and enter keys Refer changing the configuration items ...

Page 12: ...imary Voltage setting Range 415VAC for LT 0 330000VAC for HT Secondary Voltage setting 415V for LT 110V for HT meters Primary current setting 0000 9999 A AC Secondary current setting 1 5 A AC Wiring system 4 wire 3 wire Device address Range 001 255 NEW PASS WORD 0 0 0 0 SECONDRYCURRENT 5 A DEVICE ADDRESS 0 0 1 Press Key Press Key Press Key SECONDARY VOLT 1 1 0V PRIMARY CURRENT 0 1 0 0 Press Key Pr...

Page 13: ...ey or increment key pressed LCD Power save Enabled Disabled is selected using Shift or Increment key and pressing Enter key If it is Enabled then backlit is automatically switched off when there is no any key press for 3 minutes Pressing any key will make backlit ON If LCD power save is Disabled then backlit is switched on permanently kWh Energy Reset pressing Enter key resets energy Run Hour and ...

Page 14: ...Scroll Hold key toggles between Scroll Hold mode The available display pages are given below More key R 240 0 Y 239 8 B 239 6 V H 239 8 V 1001A 415 3 V H a Phase to Neutral Voltages of all 3 phases b Average Phase Voltage Line Voltage Current RY 415 5 YB 415 1 BR 415 3 V H 239 8 PV 1001A 415 3 LV H a Phase to Phase Voltages of all 3 phases b Average Phase Voltage Line Voltage Current a 3 Phase cur...

Page 15: ...362 9 kVAr H R 120 4 Y 121 8 B 120 6 kVAr H 0 866 LG 0 862 LG 0 864 LG H Average PF 3 Phase Individual kVAr 3 Phase Individual PF Input Frequency and Total kVAr More key More key Page 5 792 1 kVAh or 583 4 kWh H P 1576 1 kVAh or 123 3 kWh H Total kVAh Previous kVAh or kWh or kWh More key Page 6 More key PT RYB CTR NIL 0 00 RH H PT sequence CT reversal PT sequence CT reversal and Runhour and Previo...

Page 16: ...a master and sends a command message query containing the slave Id function code and address of the information required The command is received by all the slaves The slave whose address is matching with that of the command address would respond with the requested data The communication settings are Protocol MODBUS RTU Data bit 8 Data Type UINT Baud rate 9600 Parity None Stop bit 1 Starting Addres...

Page 17: ... 0 1 1 13 PF 40013 0 001 0 001 14 Frequency 40014 0 01 0 01 15 kWH MSB 40015 0 1 1 16 kWH LSB 40016 0 1 1 17 Meter Type Runhour MSB 40017 18 Runhour LSB 40018 19 Import Export 40019 The address of the parameters are as follows Note a PF Calculation If P F 1000 PF is in Lag P F PF If P F 1000 PF is in Lead P F PF 1000 b kWh Calculation kWh kWh MSB 65536 kWH LSB c Meter Type Runhour MSB 256 d Q Mete...

Page 18: ...he Loop Termination resistors are not required 2 Straight line Topology In this method termination resistor RT 60 100 of value equal to characteristic Impedance of the cable used may be required to avoid reflection loses It is recommended to use proper suitable communication cable for trouble free communication Master D D Meter 1 D D Meter 2 D D Meter 3 D D Meter N D D RT RT Master D D Meter 1 D D...

Page 19: ...rdering Option Display 2 row 16 character LCD Display with Backlit Character Size 4 35 H x 2 95 W mm LCD Power Save Provided when no key is operated for 3 minutes the LCD backlit is switched OFF to save power and to enchance the life of LCD The backlit is switched ON when any key is pressed Programmable PT primary secondary Voltage CT Primary Parameter secondary current Modbus ID Energy Runhour Re...

Page 20: ...1 2Least digit 3 Phase total 1000 kVA kW kVAr 1 kVA kW kVAr 1 2Least digit kVA kW kVAr HT 0 10000kVA kW kVAr 1 kVA kW kVAr 1 2Least digit 3 Phase total 10000 kVA kW kVAr 0 01 MVA MW MVAr 1 2Least digit 3Phase Power factor Avg 0 0Lg Unity 0 0Ld 0 001 LT HT 1 2Least digit Frequency 40 00 60 00 Hz 0 01Hz LT HT 0 2 2Least digit kWh kVAh 9999999 9 kWh or 0 1 LT HT Class 1 as per kVAh IS 13779 1 Run Hou...

Page 21: ...1 kVA kW kVAr 0 5 2Least digit 3 Phase total 10000 kVA kW kVAr 0 01 MVA MW MVAr 0 5 2Least digit 3Phase Power factor Avg 0 0Lg Unity 0 0Ld 0 001 LT HT 0 5 2Least digit Frequency 40 00 60 00 Hz 0 01Hz LT HT 0 2 2Least digit kWh kVAh 9999999 9 kWh or 0 1 LT HT Class 0 5 as per kVAh IS 14697 0 5 Run Hour 9999 59 Hours Max 1 Minute 3 sec day PC Interface Optional An optically isolated RS 485 O P is av...

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