F&F LE-01MR v2 User manual

ul. Konstantynowska 79/81
95-200 Pabianice
phone/fax [phone]
e-mail: [email protected]om.pl
1-phase energy consumption meter
LE-01MR v.2
User manual
v. 1.0.0

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 2
Safety information regarding the use of the controller is indicated by the following symbols. All infor-
mation and recommendations bearing these symbols must be strictly observed.
Danger of electric shock.
Potentially dangerous situation that could endanger operating personnel or dam-
age the unit.
Information on the design, operation and handling of the controller is indicated by following sym-
bols:
Important information, valuable tip.
Practical advice, solution to the problem.
Example of application or operation.

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 3
Table of contents
Part 1. Purpose ..............................................................................................................................................4
Part 2. Operation ...........................................................................................................................................4
Part 3. Installation..........................................................................................................................................5
Security measures......................................................................................................................................5
Mounting....................................................................................................................................................5
Sealing ........................................................................................................................................................7
Part 3. Usage..................................................................................................................................................8
Measurements displayed on the LCD screen.............................................................................................8
Preview of the meter settings..................................................................................................................10
Meter configuration.................................................................................................................................11
Part 4. RS-485 communication ....................................................................................................................14
Default communication settings..............................................................................................................14
List of the measurement registers ...........................................................................................................14
List of the configuration registers............................................................................................................16
Part 8. Technical data ..................................................................................................................................20
Part 9. History of changes............................................................................................................................22
Part 10. Warranty ........................................................................................................................................23
Part 11. CE declaration ................................................................................................................................24

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 4
Part 1. Purpose
The LE-01MR v2 is an electronic, legalized (MID declaration) AC electricity meter designed for direct cur-
rent measurement in 2-wire system.
The meter provides 4-quadrant energy and power measurement as well as monitoring of many additional
network parameters such as voltage, current, active power, reactive power, apparent power, frequency,
power factor. The meter has additional, resettable active and reactive energy meters. The LE-01MR v.2
meter is also equipped with RS485 communication interface with Modbus RTU protocol support for re-
mote meter reading and configuration. The touch button located on the front panel of the meter allows
you to select the displayed parameter and change the meter settings. The backlit LCD display makes it
easy to read the measured values. The meter is also equipped with auxiliary energy (active and reactive)
consumption meters, operating independently from the main meter, which can be reset by the user.
Part 2. Operation
Under the influence of the flowing current and applied voltage, the meter measures precisely the energy
consumption and many additional electrical parameters (power, voltage, current, frequency...). The me-
ter records in non-volatile memory the total (*) consumption of active and reactive energy, imported and
exported active and reactive energy and the maximum power demand. The other parameters indicated
by the meter are temporary and show the current values of the measured parameters that are not written
to non-volatile memory.
(*) The method of calculating the total energy consumption is set in the meter configuration. By default,
total energy is the sum of energy imported and exported.

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 5
Part 3. Installation
Security measures
Installation of the device should be carried out by a qualified installers with knowledge
and experience in the field of electrical installations. Please read the operating instruc-
tions before installation.
All installation work must be carried out with the supply voltage switched off. Ensure
that the wires are carefully tightened – loose wires can lead to sparking, or in the ex-
treme case to ignition of the device.
Mounting
The meter should be connected to the electrical installation according to the following diagram.
It is recommended to protect the current circuit of the meter with a fuse with a level
of protection adapted to the level of load current, but not exceeding the maximum
current of the meter (100 A).
The diameter of the wires must be adapted to the value of the currents flowing
through the current circuit of the meter (terminals 1 – 3). The minimum recommended
diameter of current wires is 4 mm2, the maximum (with sleeve) is 25 mm2. Approxi-
mate diameters of the wires depending on the load current are presented in the table
below:
Cross-section
[mm
2
]
Load capacity [A]
2.5
26
4.0
34
6
44
10
61
16
82
25
108

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 6
Functions of the meter terminals
1
Meter current input –
connection of the
phase wire of the power supply line. High
current cable
3 Current output - phase wire output to
supply
power to the receiver. High current cable
N
Neutral wire input. This connection is only
used to supply the meter and to measure the
voltage, therefore a large diameter cable is
not required.
23 Modbus RS-485 communication output –
line
A
25 Modbus RS-485 communication output –
line
B
24 Ground (GND) of the RS-
485 communication
interface.

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 7
Sealing
After connecting the meter, access to its terminals can be secured with seals connecting the meter body
to the terminal covers.
Security seals are not provided with the meter.

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 8
Part 3. Usage
Direct reading of the measured values and configuration of the meter can be accessed via the controls on
the front panel of the display.
Reading field – LCD digital indicator displaying the
value of the measured parameter.
Button –
touch button. A short press of the button
switches the view to the next displayed parameter.
Long press activates the meter configuration mode.
Pulse indicator –
the blinks of this LED correspond
to the registered increase in active energy con-
sumption. A single blink is equivalent to the con-
sumption of 1 Wh of energy (1000 pulses = 1 kWh).
Measurements displayed on the LCD screen
The LE-01MR v.2 meter allows you to display many values measured and registered by the meter. Switch-
ing to the next parameter is done by short pressing the button located on the front panel of the meter.
By default, the meter is also configured to cycle between measured values.
The list of measurements available from the LCD display is summarized in the table below.
No. Feature Format Unit Symbol
on screen
1 Total active energy 00000.00 (5+2) kWh
2 Active energy imported 00000.00 (5+2) kWh
3 Active energy exported 00000.00 (5+2) kWh
4 Total reactive energy 00000.00 (5+2) kvarh
5 Inductive reactive energy imported 00000.00 (5+2) kvarh
6 Inductive reactive energy exported 00000.00 (5+2) kvarh
7 Resettable auxiliary active energy meter 00000.00 (5+2) kWh reset /

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 9
8 Resettable auxiliary reactive energy meter 00000.00 (5+2) kvarh
reset /
9 Voltage 000.00 (3+2) V
10 Current 000.00 (3+2) A
11 Active power 00000 (5+0) W
12 Reactive power 00000 (5+0) var
13 Apparent power 00000 (5+0) VA
14 Power factor 0.00 (1+2) - PF
15 Frequency 00.00 (2+2) Hz
16 Demand for imported active power 00000 (5+0) W d +
17 Maximum demand for imported active power 00000 (5+0) W P +
18 Demand for exported active power 00000 (5+0) W d +
19 Maximum demand for exported active power 00000 (5+0) W P +
20 Demand for imported reactive power 00000 (5+0) var d +
21 Maximum demand for imported reactive power 00000 (5+0) var P +
22 Demand for exported reactive power 00000 (5+0) var d +
23 Maximum demand for exported reactive power 00000 (5+0) Var P +
The time for which a single parameter is displayed on the screen can be set in the
range of 0 - 99 seconds directly from the meter settings or via the RS-485 interface.

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 10
Preview of the meter settings
By pressing the button on the front panel of the meter for three seconds, a menu will be displayed that
allows you to read the current meter settings. In order to switch the view to the next parameter, short
press the button on the meter panel.
No. Feature Value
1 Setup
2 Number of the meter 000000000000
3 Meter address in the RS-485 net-
work
1(default) – 247
4 Baud rate 6 – 9600 bps (default)
7 – 19200 bps
8 – 38400 bps
9 – 57600 bps
10 – 76800 bps
11 – 115200 bps
5 Parity 0 – None (default)
1 – Odd
2 – Even
6 Number of stop bits Stop 1 – 1 (default)
Stop 2 – 2
7 Parameter display time
Lcd xx, where xx is the time after which the meter view will
automatically switch to display the next parameter. A value of
0 stops automatic switching.
8 Calculation of total energy con-
sumption
A parameter that shows how the total energy consumption
reading is obtained:
Value Operation
1 Total energy = Import (energy imported)
2 Total energy = Export (energy exported)
3 Total energy = Import + Export
4 Total energy = Import - Export

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 11
The default value is 3.
9 The period of calculating power de-
mand
Length of time interval (in minutes) from which the value of
power demand will be calculated.
The parameter is set in the range from 1 to 30 minutes, the
default value is 15 minutes.
10 System software version
11 Software checksum
To exit the settings preview menu, press and hold the button on the front of the device
until the previous measurement is displayed.
Meter configuration
The operating parameters of the meter can be configured directly from the meter (using the display and
a button on the front of the device), or remotely using the RS-485 interface and the Modbus RTU protocol.
Access to the configuration from the meter can be secured with a PIN number.
To enter the configuration of the LE-01MR v.2 meter you should:
•press and hold down (for approx. 3 seconds) the button on the front of the meter until the Setup
message is displayed;
•press and hold the button again until the field for entering the PIN number is displayed (initially it
is only zeroes);
•the blinking character indicates which digit of the PIN number is currently being edited;
•set the set value of the edited digit with short presses of the button;
•confirmation of the digit value is done by long pressing the button, after which the edit indicator
will be moved to the next digit;
•set and confirm all digits of the PIN number in the same way,
•If the PIN number is entered incorrectly, an error message is displayed on the screen and the op-
eration must be repeated from the beginning.
The default PIN number is set to 0000.
If the set PIN number is lost, access to the configuration, including recovery of the PIN
number, is available via the RS-485 communication interface.

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 12
•after passing the PIN verification, the first of the available configuration parameters - Id address
of the meter in the RS-485 network - is displayed;
•the transition between the parameters is made by short pressing the button, long pressing takes
you to the edition of the selected parameter;
•the parameter is set by short presses of the button, a long press of the button confirms the new
value.
No. Configuration parameters Value
1 Meter address in the RS-485 net-
work
1(default) – 247
2 Baud rate 6 – 9600 bps (default)
7 – 19200 bps
8 – 38400 bps
9 – 57600 bps
10 – 76800 bps
11 – 115200 bps
3 Parity 0 – None (default)
1 – Odd
2 – Even
4 Number of stop bits Stop 1 – 1 (default)
Stop 2 – 2
5 Resetting the auxiliary active en-
ergy meter
The display cyclically shows the reset
text and the current
value of the auxiliary meter. Press and hold down the button
on the front of the meter to reset the indication.
6 Resetting the auxiliary reactive en-
ergy meter
The display cyclically shows the reset
text and the current
value of the auxiliary meter. Press and hold down the button
on the front of the meter to reset the indication.
7
Resetting the maximum active
power demand indicator
The registered value of the maximum active power demand
appears on the display as
P xxxxxx +
Press and hold down the button on the front of the meter to
reset the indication.

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 13
8
Resetting the maximum active
power consumption indicator
The registered value of the maximum active power demand
appears on the display as
P xxxxxx +
Press and hold down the button on the front of the meter to
reset the indication.
9 Setting the display time of a pa-
rameter
Lcd xx, where xx is the time after which the meter view will
automatically switch to display the next parameter. Set
ting
range 0 – 99 Seconds. A value of 0 stops automatic switching.
10 Setting the period for power de-
mand calculation
Length of time interval (in minutes) from which the value of
power demand will be calculated.
The parameter is set in the range from 1 to
30 minutes, the
default value is 15 minutes.
11 Calculation of total energy con-
sumption
A parameter that determines how the total energy consump-
tion reading is obtained:
Value Operation
1 Total energy = Import (energy imported)
2 Total energy = Export (energy exported)
3 Total energy = Import + Export
4 Total energy = Import - Export
The default value is 3.
12 Setting up the PIN number You can set your own code to secure access to the meter con-
figuration.
The PIN code restricts access to the meter
configuration through the meter control
panel. Access via the RS-485 communica-
tion port is not blocked.

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 14
Part 4. RS-485 communication
The meter is equipped with a RS-485 communication interface that supports the Modbus RTU protocol.
Default communication settings
No. Parameter Default value:
3 Meter address in the RS-485 network 1
4 Baud rate 9600 bps
5 Parity None
6 Number of stop bits 1
List of the measurement registers
All measurement results are read-only. Data reading, according to Modbus RTU protocol, is carried out
using the Read Holding Register command (command code 0x03).
Data format:
INT32 – 32-bit signed integer
INT16 – 16-bit signed integer
The data is encoded as an integer. To obtain the actual value of the measured data, multiply
the read value by the multiplier given in the table below.
Example:
The register with the voltage value has the value of 241700. To obtain the correct value in V,
perform the following action: 241700 * 0.001 = 241,700 V
No. Parameter
Address
R/W
Num-
ber of
regis-
ters
Format Unit Multi-
plier
HEX DEC
1 Voltage 0x100 256 R 2 INT32 V 0.001
2 Current 0x102 258 R 2 INT32 A 0.001
3 Active power 0x104 260 R 2 INT32 W 1

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 15
4 Apparent power 0x106 262 R 2 INT32 VA 1
5 Reactive power 0x108 264 R 2 INT32 Var 1
6 Frequency 0x10A 266 R 1 INT16 Hz 0.1
7 Power factor 0x10B 267 R 1 INT16 - 0.001
8 Total consumed (imported) active energy 0x10E 270 R 2 INT32 kWh 0.01
9 Total returned (exported) active energy 0x118 280 R 2 INT32 kWh 0.01
10 Total active energy 0x122 290 R 2 INT32 kWh 0.01
11 Total consumed (imported) reactive en-
ergy 0x12C 300 R 2 INT32 kvarh 0.01
12 Total returned (exported) reactive energy 0x136 310 R 2 INT32 kvarh 0.01
13 Total reactive energy 0x140 320 R 2 INT32 kvarh 0.01
14 Total reactive energy in the first quadrant 0x14A 330 R 2 INT32 kvarh 0.01
15 Total reactive energy in the second quad-
rant 0x154 340 R 2 INT32 kvarh 0.01
16 Total reactive energy in the third quad-
rant 0x15E 350 R 2 INT32 kvarh 0.01
17 Total reactive energy in the fourth quad-
rant 0x168 360 R 2 INT32 kvarh 0.01
18 Resettable auxiliary active energy meter 0x172 370 R 2 INT32 kWh 0.01
19 Resettable auxiliary reactive energy meter 0x174 372 R 2 INT32 kvarh 0.01
20 Consumed (imported) active power de-
mand 0x176 374 R 2 INT32 W 0.1
21
Maximum consumed (imported) active
power demand 0x178 376 R 2 INT32 W 0.1
22 Returned (exported) active power demand 0x17A 378 R 2 INT32 W 0.1
23
Maximum returned (exported) active
power demand 0x17C 380 R 2 INT32 W 0.1

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 16
24 Consumed (imported) reactive power de-
mand 0x180 384 R 2 INT32 var 0.1
25
Maximum consumed (imported) reactive
power demand 0x182 386 R 2 INT32 var 0.1
26 Returned (exported) reactive power de-
mand 0x184 388 R 2 INT32 var 0.1
27
Maximum returned (exported) reactive
power demand 0x186 390 R 2 INT32 var 0.1
List of the configuration registers
To write configuration data to the LE-01MR v.2 meter you can use commands with codes:
•0x06 – Write Single Register
•0x10 – Write Multiple Register
If a parameter is written to more than one register, then writing to this parameter must be
done using the Write Multiple Register command and it must include all registers of the pa-
rameter being edited once.
For remote configuration of the meter, it is recommended to use the free LE Config
software (for PCs with the Windows operating system), available on the www.fif.com.pl
page on the product subpage.
No. Parameter
Address
R/W Number of regis-
ters Description
HEX DEC
1 Serial number of the
meter 0x1000 4096 R/W 6
12-digit meter identification num-
ber. The number is stored as a BCD
number.
For example, a hexadecimal num-
ber in
the form 0x123456789012
indicates a meter withe the serial
number 123456789012
2 MODBUS address 0x1003 4099 R/W 1
Meter address in the Modbus RTU
network. Values between 1 and
247 are allowed.

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 17
3 Software version 0x1004 4100 R 1
Values indicate the
version of the
meter and control software.
4 Electronics version 0x1005 4101 R 1
5 CRC checksum 0x1006 4102 R 1
6 Parameter display time 0x100B 4107 R/W 1
Time encoded in seconds. Setting
range 0 -
99 seconds, a value of 0
means that the automatic switch-
ing of the parameter view stops.
7 RS-485 - communica-
tion rate 0x100C 4108 R/W 1
The communication rate is en-
coded in numerical form, according
to the following table:
Value Bitrate
6 9600 bps
7 19200 bps
8 38400 bps
9 115200 bps
9 RS-485 – parity check 0x100D 4109 R/W 1
Value Settings
0 None
1 Odd
2 Even
10 RS-485 – number of
stop bits 0x100E 4110 R/W 1
Value Settings
1 1 – stop bit
2 2 – stop bits
11 Calculation of total en-
ergy consumption 0x100F 4111 R/W 1
The total energy is equal to:
Value Settings
1 Energy consumed (im-
port)

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 18
2 Energy returned (ex-
port)
3 Import + Export
4 Import- Export
12 Calculating power de-
mand 0x1010 4112 R/W 1
Value Operation
0
Power demand is cal-
culated on the basis of
successive, full time in-
tervals
1
Power demand calcu-
lated on the basis of
the moving average
over a given period of
time
13 The period of calculat-
ing power demand 0x1011 4113 R/W 1
Value in minutes. Setting range
from 1 to 30 minutes.
14
Configuration of the
measured values indi-
cated on the display
0x1012 4114 R/W 4
Parameter that allows you to limit
the number of measured values
visible on the LCD.
Each parameter corresponds (in
order as shown in the LCD descrip-
tion table) to one bit of that param-
eter. Bit set to 1 means the meas-
urement is visible on the LCD, bit
set to 0 means the parameter is not
visible.
Note
: the data is stored in the two
upper registers (0x1014-0x1015).
Note: If the entire parameter is re-
set, no values will be displayed on
the meter screen.
15 PIN 0x1016 4118 R/W 1 The PIN code restricts access to the

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 19
meter configuration through the
panel on the front of the meter.
16 Auxiliary energy meter
reset 0x2002 8194 R/W 1
Value Operation
0x2000 Active energy meter re-
set
0x4000 Reactive energy meter
reset
0x6000 Active and reactive en-
ergy meter reset
17 Power demand meters
reset 0x2003 8195 R/W 1
To reset the selected power de-
mand value, enter one of the fol-
lowing values into the register
Value Operation
0xA501
Demand for active
power
0xA502
Demand for reactive
power
0xA504
Maximum active
power demand
0xA508
Maximum reactive
power demand

domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0 20
Part 8. Technical data
Installation 2-wire
Rated voltage 230 V AC
Current
minimum 0.02 A
base 5 A
maximum 100 A
Voltage measurement range 100 – 289 V AC
Accuracy of measurement (EN50470-1) Class B
Rated frequency 50 Hz
Insulation protection class Class II
Housing PC material
Meter power consumption 10 VA, 1 W
Meter display range 0 – 99999.99 kWh
Display 7-digit, LCD backlit (blue)
Meter constant 1000 pulse/kWh
Communication
interface RS-485
communication protocol Modbus RTU
Modbus address 1(*) - 245
baud rate 9600(*), 19200, 38400, 115200 bps
parity control None(*), Even, Odd
stop bits 1
Energy reading indication LED, red
Operating temperature -25 ÷ +55 oC