Sices D-PRO, Technical Manual

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D-PRO Protection relay Technical Manual 7
4.
4.1
WARNING! In order to respect the safety rules, you must guarantee an electrical
insulation not lower than the one of a safety transformer compliant to the IEC61558-2-6
or equal regulation.
The JD connector is the supply connector: connect a continuous power supply (usually the
engine starter battery) to the 1-GND terminal (negative) and to the 2-+BATT terminal
(positive).
The negative terminal 1-GND is the reference and the common return of the digital inputs,
outputs and current and voltage measurements. It must be connected to the protective
earth. The systems that require insulation between the battery negative and the earthing
protection can be used but can generate operating problems and may require particular care,
as the use of insulation current transformers for the voltage measurements of Mains and
Genset.
Although the device is protected by a built-in self-resetting fuse, it is recommended that you
use a fuse for the protection of the positive line
2-+BATT . The device automatically
acknowledges when it is powered if the genset battery nominal voltage is 12 or 24V for
managing the related logics and alarms.
NOTE: during the installation, connect the positive voltage only after all fuses available
in the panel are all opened.
4.2
The controller uses eight
LEDs for the user’s visualization and four red LEDs associated to
the status of the four relay outputs. The LEDs are only on the controller, but they are not
associated to any output (static or relay output) and they have the following default function.
Led off LED steady ON LED flashing
  
LED Colour Signalling Function
ON Green Controller status

Controller working

Controller in alarm

Controller in alarm