janitza UMG 96 RM-M, User Manual And Technical Data, Page: 50 / 112

50
UMG 96RM-M
Clear energy meter (addr. 507)
The active, apparent and reactive energy meters can
only be cleared together.
Address 507 must be written with "001" in order to clear
the contents of the energy meters.
Clearing the energy meters means this
data in the device is gone.
In order to avoid possible data loss,
read and save the measured values with
the GridVis software before clearing.
C
Rotation field direction
The rotation field direction of the voltages and the
frequency of phase L1 are shown on the display.
The rotation field direction indicates the phase sequence
in three-phase systems. Usually there is a "clockwise
spinning rotation field".
The phase sequence at the voltage measurement
inputs is checked and displayed in the UMG 96RM-M.
A movement of the character string in the clockwise
direction means a "right rotation" and a counter-
clockwise movement indicates a "left rotation".
The rotation field direction is determined only if
the measurement and operating voltage inputs are fully
connected. If one phase is missing or two of the same
phases are connected, the rotation field direction will not
be determined and the character string does not appear
on the display.
Fig. Display of the mains
frequency (50.0) and the
rotation field direction Fig. No rotation field
direction detectable.
C
Prior to commissioning potential produc-
tion dependant contents of the energy
counter and min/max values have to be
deleted.