Element Blocking - Siemens 7SR18 Solkor Manual

50BF Setting (xIn) Test Current
(110%).............
(90%)...............
50BF CB Faulty
50BF-I4 Setting Test Current
(xIn)
(110%).............
(90%)...............
50BF CB Faulty
If the circuit breaker can also receive a trip signal from a protection function where there is no increase in current,
this trip input should be mapped to 50BF Mech Trip in the INPUT CONFIG>INPUT MATRIX menu.
Initiate this binary input and simulate the circuit breaker remaining closed by ensuring the CB Closed binary Input
is energised and ensure operation of the 50BF-1 and 50BF-2 outputs after their programmed delays.
50BF Mech Trip
CB Closed
CB Open
4.1.1
E B
LEMENT LOCKING
The CB Fail function can be blocked by Binary Input Inhibit. This functionality should be checked.
Element
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50BF-1 Delay...............
No Operation
Operation No Delay
50BF-1 Delay...............
No Operation
Operation No Delay
50BF-1 Delay...............
No Operation
50BF
7SR18 Commissioning & Maintenance Guide
50BF-2 Delay...................
No Operation
Operation No Delay
50BF-2 Delay...................
No Operation
Operation No Delay
50BF-2 Delay...................
No Operation
BI Inhibits
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