domestic and industrial automation
LE-01MR v.2 – User manual v.1.0.0
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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.
