janitza UMG 512 - Applying the Residual Current

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UMG 512
Applying the residual current
Connect residual current transformer only to the I5
and I6 inputs with a rated current of 30mA! Both residual
current inputs can measure AC currents, pulsing direct
currents and DC currents.
Bearing in mind the current transformer ratio, the residual
current displayed by the UMG 512 must correspond with
the input current.
The current transformer ratio is factory-set to 5/5A
and must be adapted to the residual current transformer
used if necessary.
Failure monitoring (RCM) for I5, I6
The UMG 512 enables continuous monitoring of the
connection to the residual current transformer on inputs
I5 and I6.
Activation of failure monitoring is performed using
the corresponding menu item or by setting address
13793 for the residual-current measurement input I5
and 13795 for I6.
If there is an interruption in the connection to the current
transformer, this state is recorded in certain registers
or indicated in the GridVis software.
C
It is not necessary to configure a
connection schematic for residual current
inputs I5 and I6.
C
The UMG 512 requires the mains frequency
for residual current monitoring. For this
purpose, the measured voltage should be
applied or a fixed frequency should be set.
Modbus addr. Value / Function
13793 (I5)
13795 (I6)
Failure monitoring for I5 / I6
0 = Deactivate monitoring
1 = Activate monitoring
Modbus addr. Value / Function
13805 (I5)
13806 (I6)
0 = Connection to the residual
current transformer on to I5 or I6
error-free
1 = Error in the current transformer
connection to I5 or I6