COMMISSIONING
For the commissioning you have to apply the auxiliary power supply by inserting the connector into
the corresponding socket of remote control unit.
When RGDAT-A70 switches on, LEDs turn on in sequence (indicating the execution of boot-loader),
after that all LEDs turn on simultaneously for about 1 s, indicating start of application firmware.
To verify the right operation of the device, you can measure the power supply current, which, in
quiescent status and with a supply voltage equal to nominal value (24 V
DC
), should be in the range 90
to 130 mA.
Voltage inputs calibration procedure
At the first installation of RGDAT-A70 in the field, or when you move it to another plant, or even in
case of replacement of one of the combined sensors, you must execute the procedure described
below.
The purpose of voltage inputs calibration procedure is to adjust RGDAT-A70 voltage inputs to the
voltage transducers of the combined sensors.
The procedure must be performed in absence of faults on MV network and must be repeated in
case a fault occurs during execution of the procedure.
The calibration procedure can be performed at any time later but you must check the conditions
described in the previous paragraph.
To perform the voltage inputs calibration procedure, you must use the software RGDAT_A70 as
described in the chapter related to the programming software.
Please note that until you do not perform the voltage inputs calibration procedure, the protection
functions of RGDAT-A70 are disabled, unless you select the operating mode "Limited", in which case
only the thresholds 51 and 51N are active.
P515D851 Rev. E November 2019 Pag. 38 of 45
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