Sices D-PRO, Technical Manual

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8 D-PRO Protection relay Technical Manual
LED Colour Signalling Function
AUX LINK Green
Serial
communication
status

It indicates that a communication on one of the serial
interfaces.

It indicates that no communication on the serial interfaces.
CANBUS Green
INTERFACE
DST4602 Status

It signals that the CAN-BUS interface is active and in
ERROR-ACTIVE mode.

Flashing at 25% it indicates a communication fault: the
port is in
ERROR-PASSIVE mode.
Flashing at 75% it indicates a communication fault: the
port is in
BUS-OFF mode.

It signals that the CAN-BUS is disabled.
LED 1 Green - Not used.
LED 2 Green - Not used.
ENABLE Green
Protection
enabled.

At least one protection is enabled.

No protection is enabled (that is the protection controller is
disabled).
ACTIVE Yellow
Protection
activated.

At least one protection is enabled and exceeded the
threshold.

No protection is activated.
TRIP Red
Triggered
protection

At least one protection has triggered (TRIP).
In order to switch off the LED, you need to reset the
protection with the reset input or by positioning the key
selector on DST4602 on OFF/RESET.

No protection has triggered.
The status of disabled protection (LED ENABLE off) is acknowledged by OR conditions:
- GCB status input opened (only if configured).
- All the configured inputs of protections disabling are active.
The status of enabled protection (LED ENABLE on) is signalled when at least one protection
is enabled (no input or disabling parameter is active) and lower than the protection threshold.
The status of activated protection (LED ACTIVE steady on) is signalled when at least one
protection is enabled (no input or disabling parameter is active) and exceeded the protection
threshold. The LED refers to the measurements by activating when it exceeds the threshold
and by deactivating when it is lower than the threshold (even in case the protection triggers).