Enersol MFLR09 User manual
User Manual
MFLR09 | Energy Meter
Table of Contents
1. Family Overview..........................................................................................3
2. Safety Precautions......................................................................................4
3. Enersol Toroidal Meters - Key things to consider........................................5
4. Technical details..........................................................................................6
Ordering Code.................................................................................7
5. List of parameters........................................................................................8
6. Validating parameters..................................................................................9
7. Parameter Description................................................................................10
7.1 Power...............................................................................................10
7.2 Energy..............................................................................................10
7.3 Power factor.....................................................................................11
7.4 Ampere.............................................................................................11
7.5 RPM.................................................................................................12
7.6 Energy Reset...................................................................................12
7.7 Meter Run Hours..............................................................................13
7.8 Power ON Hours..............................................................................13
7.9 Power Interruptions..........................................................................13
7.10 Diagnosis........................................................................................14
8. Interface and Input terminals.......................................................................17
8.1 Meter Front......................................................................................17
8.1.1 Screen Description.............................................................18
8.2 Meter Back Terminals......................................................................19
9. Display Manual............................................................................................20
10. Programming Guide...................................................................................23
11. Connection Diagram...................................................................................24
12. Enersol Current Transformer......................................................................25
13. MODBUS RTU...........................................................................................26
14 MODBUS register mapping.........................................................................28
Page 3
MFLR09 Family
Enersol MFLR09 is Multi-Function meter. It is easy
to operate and monitor basic electric parameters.
A Meter With Always ON Energy Display
Along with all basic electric parameters, MFLR09
family measures active, reactive as well as
apparent power/Energy, site configurable, which
makes it a perfect fit for majority of applications.
Meter Comes with optional RS485 capability for
IOT applications. User can access the device
remotely with ease.
1. Bright and easy to read 16x2 LCD display with
blue back light and white text.
2. All basic electric parameter along with Active,
reactive, apparent power/Energy (only one at
a time, site configurable).
3. Direct sense load till 60 Ampere with Enersol
CTs.
4. Site configurable for Star (3 Phase 4 wire), Delta
(3 Phase 3 Wire) and Single phase.
5. A meter with always ON energy display.
6. Optional RS485 over serial line for IOT based applications.
7. Meter configurable parameters are password protected to avoid unauthorized
access.
Meter Features
123 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
Voltage inputs 80 = 480VAC LL
Current Input: 50mA to 60A
Ph N
Aux. Sup.
90-300V, 2VA RS485
DANGER
Turn off power before working
R CT Y CT B CT RS485
V1 V2 V3 Vn +
-
1. Family Overview
2. Safety precautions
!
A voltage level of 415 volts is present at the meter
back side which can be lethal, Improper handling
can cause series injuries or death.
Before operating, it is advised to be friendly with the metering
and electrical devices basics.
Below are few things that one should follow to operate on
the meter
1. It is advised to always use skilled technicians to operate/
install the meter.
2. Always use complete personal protection equipments
before handing / operating / installing / maintaining any
electrical and electronic device.
3. A voltage level of 415 present at the back of the meter
terminals, so always turn off the meter and disconnect
all live wires before start working.
4. Never forcefully insert conductive materials like live wire
inside meter body, it can cause personal damage as well
Page 4
X
3. Enersol Toroidal Meters - Key things to consider
Page 5
123 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
Voltage inputs 80 - 480VAC LL
Current Input: 50mA to 60A
Ph N
Aux. Sup.
90-300V, 2VA RS485
R CT Y CT B CT RS485
V1 V2 V3 Vn +
-
Turn off power before working DANGER
CT Shorting Block
+
1. Never Connect CTs of this
toroidal meter to the electric
earth or any other earth
connection.
2. Never short S2 of all CTs. Use only
Enersol recommenced connection
diagram while making connections.
3. Never connect /5 CT
with toroidal meter.
4. *Always use Enersol
toroidal CTs provided
with the meter.
*Actual product may be some what different than shown in the image.
5. All Enersol Toroidal meters
are written with
50mA to 60A
at the meter back
+
123 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
Voltage inputs 80 = 480VAC LL
Current Input: 50mA to 60A
Ph N
Aux. Sup.
90-300V, 2VA RS485
DANGER
Turn off power before working
R CT Y CT B CT RS485
V1 V2 V3 Vn +
-
70mm
89.5mm
89.5mm
R
Y
B
ND+ D-
RS485
Auxiliary
Supply
Ph N
12345678
14131211109 16
15
Relay -1 (NO)
Dg
+-
24V
230V
Ph N
Relay -2 (NO)
General
Instantaneous Values
Electric Characteristics: Input voltage
Electric Characteristics: Input Current
Display
Site Configuration
Direct sense loads up to 60A. No /5 CT requirements
Range
Nominal Voltage
45VLL to 550VLL (if PT ratio is 1 else depends upon PT ratio)
240VLN/415VLL
Range
Suppression currrent
Nominal Current 5Amp
<10mA
From 10mA to 60A.
Easy to read LCD display consisting of 2 rows and 16 characters in each row with Blue back light and white text.
Network
Selected Energy keeps on showing at second row while scrolling (While at summary page).
Load Type
Port Settings
PT Ratio
CT Ratio
User can configure the meter for the following connection configurations
1. Single: For single phase configuration.
2. Star: For 3 phase 4 wire systems (3 phase 1 neutral wire).
3. Delta: For 3 phase 3 wire configuration (3 phase wire).
Meter can be configured to display either Active or Reactive or Apparent Energy/Power
On site configurable port settings
1. Slave ID: from 1 to 247.
2. Baud: From 1200 to 38400
3. Parity: None, Even, Odd
On site configurable from 0.001 to 9999
Not Configurable.
True RMS Current. Measures average & per phase current. Including up to 15th harmonic component.
True total and per phase PF measurement along with Load type indication (Capacitive & Inductive load).
Total and per phase Active, Apparent & Reactive power (only one at a time. Site configurable)
Available in accuracy class 1 and 0.5.
Current
Impedance >= 5 MOhms
50/60Hz ±5%. ( Only Factory Configurable ).
50/60Hz ±5%
Available with and without port.
Power Factor
Frequency Range
Frequency Range
Available in 3 phase or in single phase configuration.
Power
VA Burden <0.2 VA at 240 V AC L-N
4. Technical Details
Page 6
Electric Characteristics: Auxiliary Supply
Operating Range
Nominal Voltage
90 to 300VAC/DC
240V
50/60Hz ±5%
Frequency Range
VA Burden <5VA
Frequency
Meter can operate on both 50 & 60Hz system. But this setting is factory configurable only.
Certifications
Immunity to fast transients
Immunity to impulse waves
Accuracy Tests
IEC 61000-4-4
IEC 61000-4-5
IEC 62053-21 for Class 1
IEC 62053-22 for Class 0.5
Mechanical Characteristics - weight
Communication (optional)
Calibration
Auto Page Save Feature
Ordering Codes
With 60Amp CT
MODBUS RTU over serial Line (RS-485), along with communication status LED.
Calibration LED to validate meter total KWh accuracy. Factory default meter constant is 1600 pulse/Kwh
Meter will automatically load the same page which it was displaying just before the power cut.
MFLR0905, 60A, 1ɸ
MFL0905, 60A, 1ɸ
MFLR0910, 60A, 1ɸ
MFL0910, 60A, 1ɸ
MFLR0905, 60A, 3ɸ
MFL0905, 60A, 3ɸ
MFLR0910, 60A, 3ɸ
MFL0910, 60A, 3ɸ
MFLR09 meter ( with RS485 port) / Class 0.5 / 60Amp Current rating / Single Phase Configuration.
MFL09 meter ( without RS485 port) / Class 0.5 / 60Amp Current rating / Single Phase Configuration.
MFLR09 meter ( with RS485 port) / Class 1 / 60Amp Current rating / Single Phase Configuration.
MFL09 meter ( without RS485 port) / Class 1 / 60Amp Current rating / Single Phase Configuration.
MFLR09 meter ( with RS485 port) / Class 0.5 / 60Amp Current rating / 3 Phase Configuration.
MFL09 meter ( without RS485 port) / Class 0.5 / 60Amp Current rating / 3 Phase Configuration.
MFLR09 meter ( with RS485 port) / Class 1 / 60Amp Current rating / 3 Phase Configuration.
MFL09 meter ( without RS485 port) / Class 1 / 60Amp Current rating / 3 Phase Configuration.
520 Grams (1.1464 lbs), Including 3 nos 60 Ampere CTs.
Page 7
Display Update
Integrated Values
Instantaneous Values 1 Sec
1 secs
Page 8
5. List of parameters
S.No. Parameter Description
1. Ampere Meter calculate phase wise as well as average Ampere.
Avg Ampere = (IR + IY + IB) / 3 (in case of Star/delta)
OR Avg Ampere = IR (In case of Single Phase)
2. *Watt Meter calculate phase wise as well as Total watt.
Total watt = WR + WY + WB
3. *VAR Meter calculate phase wise as well as Total VAR.
Total VAR = VAR_R + VAR_Y + VAR_B
4. *VA Meter calculate phase wise as well as Total VA.
Total VA =
5. PF Meter calculate phase wise as well as Total PF.
6 DG RPM Meter calculate DG RPM.
7. *Energy Meter calculate all 3 energies i.e. Wh, VArH & VAh
only one available at a particular time.
8. Run Hours Meter calculate Run hours i.e. total time for which
a non-zero current flow through the meter CTs.
It describes, for how much time meter operate under
load condition.
9. Meter On Hours It describes, for how much time meter was ON.
10. Power Intr. I describes how many times auxiliary supply has been
interrupted.
11. Old Intg Para Old Integrated parameters. After manual clearing or
of overflow, integrated value get store in old integrated
parameters before reset.
* Only one type of Power/Energy available at a time
W + VAr
22
tot tot
1. Watt Estimation (W):
(Only applicable when voltage and current have pure sinusoidal waveform. This formula
can only be used for approximation. This formula doesn't consider the effect of harmonics,
spikes, surges, sag & swell )
R Phase watt = R Phase Voltage x R Phase Current x R Phase PF
Y Phase watt = Y Phase Voltage x Y Phase Current x Y Phase PF
B Phase watt = B Phase Voltage x B Phase Current x B Phase PF
Total Watt = Absolute value of R Phase watt + Absolute value of Y Phase watt + Absolute
value of B Phase watt
*if watt of a particular phase is showing negative, that means CT of that phase is
in reverse direction.
2. VAR Estimation:
(Only applicable when voltage and current have pure sinusoidal waveform. This formula
can only be used for approximation. This formula doesn't consider the effect of harmonics,
spikes, surges, sag & swell )
R Phase VAR = R Phase Voltage x R Phase Current x Sin(cos (R Phase PF))
Y Phase VAR = Y Phase Voltage x Y Phase Current x Sin(cos (R Phase PF))
B Phase VAR = B Phase Voltage x B Phase Current x Sin(cos (R Phase PF))
Total VAR = R Phase VAR + Y Phase VAR + B Phase VAR
3. VA Estimation
(Only applicable when voltage and current have pure sinusoidal waveform. This formula
can only be used for approximation. This formula doesn't consider the effect of harmonics,
spikes, surges, sag & swell )
R Phase VA = R Phase Voltage x R Phase Current
Y Phase VA = Y Phase Voltage x Y Phase Current
B Phase VA = B Phase Voltage x B Phase Current
Total VA =
4. Estimation of Wh (Active Energy):
To approximate the energy, apply a constant load to the meter. Say 2 Kilowatt. We can say if a
constant load of 2 KW flow via meter, then after 1-hour meter will calculate 2.000 KWh (i.e. unit). Formula
for same is shown below
KWh (for a specified time) = Kw x t , where t is time in hours
For ex:- If watt = 2Kilowatt and suppose we want to calculate energy for 30 mins (0.5Hours), then
Kwh (for 30 mins) = 2 * 0.5 = 1Kwh (Similarly, KVAh and KVARh can be calculated)
4. List of parameters6. Validating Parameters
Page 9
W + VAr
22
tot tot
4. List of parameters
LCD
Series
ENERSOL MFLR09
PROG
COM
Tot: 1.79KW
0002504.3KWh
To validate the energy, meter has
calibration LED, this LED blinks 1600
times per Kwh.
A Meter Test equipment read this pulses
via an optical sensor and calculate the
% error in energy.
Calibration LED
-1
-1
-1
7. Parameter Description
Page 10
7.1 Power: Meter can either display W or VA or VAR (total and phase wise) one at a
time. This is site configurable. Refer to programming manual on how to
change load type.
Power will auto scale on the display and “K” or “M” will display accordingly
to represent the power in Kilo or Mega (depending upon load).
7.2 Energy: Meter can either display Kwh or KVAh or KVARh (total and phase wise)
one at a time. This is site configurable. Refer to programming manual on
how to change load type. Below are some sample screens.
Energy will reset to zero in 2 cases;-
a.) Energy Overflow: Meter caluculate energy till 42 Lakhs, after that it reset to zero.
b.) Manual Reset;- User can manually reset the energy in the programming mode.
In both cases, meter will automatically save the energy to old integrated parameters
before clearing.
LCD
LCD
LCD
LCD
LCD
Series
Series
Series
Series
Series
ENERSOL
ENERSOL
ENERSOL
ENERSOL
ENERSOL
MFLR09
MFLR09
MFLR09
MFLR09
MFLR09
PROG
PROG
PROG
PROG
PROG
COM
COM
COM
COM
COM
Watt: r-1.12K VAR: r-1.12K
VA: r1120
Tot: 3.59KVA Tot: 3.12KVAR
LCD
Series
ENERSOL MFLR09
PROG
COM
Tot: 1.79KW
0002504.3KWh
y1.12K b1.12K y1.12K b1.12K
y1112 b1120
0003904.3KVAh 0003504.3KVARh
Row 1: Total Watt. Display
reads as total 1.79 Kilo watt.
Row 2: Total KWh. Display
Reads as 2504.3 Kwh or
2504.3 units of active energy.
Row 1: Phase wise watt. Display
reads as R phase = -1.12 Kilo watt.
negative value means CT is installed
in reverse direction.
Row 2: Display reads as
Y phase = 1.12 Kilo watt
B phase = 1.12 Kilo watt
Row 1: Phase wise VAR. Display
reads as R phase = -1.12 Kilo VAR.
Row 2: Display reads as
Y phase = 1.12 Kilo VAR
B phase = 1.12 Kilo VAR
Row 1: Phase wise VA. Display
reads as R phase = 1120 VA
Row 2: Display reads as
Y phase = 1112 VA
B phase = 1120 VA
Row 1: Total VA . Display
reads as total 3.59KVA.
Row 2: Total KVAh. Display
Reads as 3904.3 KVA or
3904.3 units of apparent energy.
Row 1: Total VAR. Display
reads as total 3.12KVAR.
Row 2: Total KVARh. Display
Reads as 3504.3 KVArh or
3904.3 units of Reactive energy.
This manual suits for next models
2
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