User Manual

Device description

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Other features of the EMpro energy measuring devices are:

– Firmware update function

– Password protection (local and web-based management (WBM))

– Deactivation of control buttons for configuration

– Sealable connection fields

– Export, import and direct transfer of configuration data

– Color changes on display (white, red) in the event of errors/events

The following measurement values/parameters are shown on the LC displays of EMpro

energy measuring devices:

– Voltage U [V] (L-L, L-N)

– Current I [A]

– Frequency f [Hz]

– Active power P [W] (string, total)

– Reactive power Q [var] (string, total)

– Apparent power S [VA] (string, total)

– Power factor PF, 

– Active power factor, active factor cos 

– Phase shift angle, phase angle  (U-U, U-I)

– Total harmonic distortion (ratio) of the voltage, THD U (L-L, L-N)

– Total harmonic distortion (ratio) of the current, THD I

– Energy E [Wh, varh, VAh] (consumption/supply)

– Energy tariff meter E [Wh, varh, VAh] (consumption, supply, meter 1-4)

For the measurement values/parameters voltage U (L-L), U (L-N), current I, frequency f,

active power P, reactive power Q and apparent power S, it is possible to switch between:

– Instantaneous = Instantaneous value

– Min = Minimum value (can be reset)

– Max = Maximum value (can be reset)

– AVG = Current average value

– AVG Min = Minimum average value (can be reset)

– AVG Max = Maximum average value (can be reset)

All the measures described above are also available via the web server that has been

integrated into the EMpro energy measuring device. In the web browser, the data cannot

only be displayed numerically, but also in the form of a convenient analog display with trend

charts.

A variety of hardware and software interfaces can be used to communicate with higher-level

control systems. At the time of writing this document, the following interfaces are available:

– Modbus/RTU (RS-485)

– Modbus/TCP (Ethernet)

– PROFINET (Ethernet, Dual Port)

– EtherNet/IP (Ethernet, Dual Port)