Siemens 7UT51

13
Binary-Signal Inputs, Signal Contacts, Trip Contacts, and LED Indicators
7UT51 v3
128 PRIM-2330C
13.4 LED Targets
The LED targets on the front panel of the relay can be
controlled by the functions in section Table 13.1. One
LED indicates that the relay has power, while another
indicates when the relay is blocked. The other LEDs
can be configured. An LED lights when one of its
functions becomes active, and can be configured to
remain lit until reset (memorized, m) or only until the
function becomes inactive (not memorized, nm). The
7UT512 relay has six programmable LEDs, while the
7UT513 relay has 14.
Alarm functions have effect only when the
corresponding protection function is enabled and
active. Functions with a “>” sign prefix can be
assigned to both signal contact inputs and signal
contact outputs to pass a signal through the relay
independent of the relay’s protective functions (of
course, the relay must be operational).
Relay 4 141
143
144
145
151
152
Failure 24V
Failure 15V
Failure 5V
Failure 0V
Failure I/O 1
Failure I/O 1
Relay failure
Relay 5 51 Device Operative
Relay 6 1571
1621
O/L 1 Trip
O/L 2 Trip
Thermal overload protection
Relay 7 1566
1616
O/L 1 warn
O/L 2 warn
Thermal overload protection
Relay 8 5821 RGF Gen. Trip Trip of restricted ground-fault protection
Relay 9 5921 Tank Gen. Trip Trip of tank leakage protection
Relay 10 391 Buchh. Warn Buchholz warning
Relay 11 392 Buchh. Trip Buchholz trip
Relay Code Function(s) Description
6301 LED1 6308 LED 8 (7UT513 only)
6302 LED 2 6309 LED 9 (7UT513 only)
6303 LED 3 6310 LED 10 (7UT513 only)
6304 LED 4 6311 LED 11 (7UT513 only)
6305 LED 5 6312 LED 12 (7UT513 only)
6306 LED 6 6313 LED 13 (7UT513 only)
6307 LED 7 (7UT513 only) 6314 LED 14 (7UT513 only)
Each LED can be independently lit by up to twenty functions (chosen from the list in Table 13.1). Each
function can cause the LED to remain lit until deliberately reset (memorized, m) or go out once the function is
no longer active (not memorized, nm) unless, of course, another function lighting the LED is still active. The
default configuration is listed below:
LED Code Function(s) Description
LED 1 511 Device Trip m General trip signal
LED 2 5691 87
-
Trip 87 Trip of differential protection
LED 3 5692 87HS Trip 87HS Trip of differential protection
LED 4 2451 BU Gen. Trip General Trip of backup overcurrent protection