User Manual

Device description
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2 Device description
The EMpro energy measuring devices (EEM-MA77x types) are universally deployable,
high-precision, network-compatible measuring devices with LC display, which can mea-
sure, evaluate and process voltages and currents in one, two and three-phase power supply
systems. For voltage measurements, up to four inputs are available; for current measure-
ments, up to three inputs are available. You can use EMpro energy measuring devices in
TN and IT systems.
Typical installation locations of EMpro energy measuring devices are:
– Assemblies of switchgear and controlgear, assembly of switchgear and controlgear
systems
– Control panels
– Control desks
To enable versatile use, EMpro energy measuring devices are available for the following in-
stallation methods:
– For front panel installation or with DIN rail adapter, with LC display, with control buttons
– For DIN rail installation, with LC display, with control buttons (included in the EMpro
product family, but not described in this user manual)
– For DIN rail installation, without LC display, without control buttons (included in the EM-
pro product family, but not described in this user manual)
Your advantages:
– Precise knowledge of load profiles allows load management, optimization of the elec-
trical energy usage and optimization of energy consumption from the public supply net-
work and own production (e.g., CHP, PV system).
– Meaningful load profiles are an important aid for planning system expansions and build-
ing new systems.
– Energy costs can be assigned to individual functional divisions or cost centers.
– A transparent overview of the energy flows increases the awareness of energy con-
sumption, uncovers waste of energy and makes it possible to identify energy-intensive
system components and equipment that harbors potential energy savings.
– Critical system states can be detected, reported and registered. Such critical system
states can, e.g., be caused by overload, unbalanced load, undervoltage, voltage and
current distortion by non-linear consumers, etc. Detection of critical system states
makes it possible to quickly react to such states in order to prevent potential decreases
in availability or energy supply failures. When critical system states are detected in time,
measures can be taken to ensure permanent system availability.
– Seamless communication with control systems via Modbus/RTU, Modbus/TCP,
PROFINET and EtherNet/IP™ and with higher-level energy management systems via
standard TCP/IP networks (Ethernet, RJ45)
– Intuitive configuration and operation of EMpro energy measuring devices with four front
buttons or integrated web server
If you use a DIN rail adapter (EEM-MKT-DRA, Order Number 2902078), you can mount
EMpro energy measuring devices for front panel installation on a 35 mm DIN rail.