ABB SACE PR021/K, Manual

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L3016 1SDH000559R0002
ABB SACE
SACE PR021/K
5.14.2. Signals
The signals (K51/1...K51/8) for the SACE PR331/P protection release may be divided into 3 modes: Normal, Latch and
User. A description of the signals in these modes is given below.
5.14.2.1. Normal mode (see par. 4.5.1)
The dip-switches are to be set as follows: Dip-switch no. 5 = A, Dip-switch no. 11 = OFF.
Note 1
: Following a TRIP, the status of the signals is frozen signalling the trip (K51/7) and the protection that caused
it.
Note 2: The signals bearing this marking are not frozen as indicated in Note 1.
Note 3: If dip switch no. 10 (RESET) is set to its “MAN” position, the signals may be reset as described in par. 4.2.
Note 4: If dip switch no. 10 (RESET) is set to its “AUT” position, the signals are reset automatically when the trip on
the protection unit is reset (see par. 4.2).
5.14.2.2. Latch mode (see par. 4.5.2)
The dip-switches are to be set as follows: Dip-switch no. 5 = A, Dip-switch no. 11 = ON.
Electric
contact
Event that caused closing of the relay
Selection of dip-switches
no. 2, 3, 4
K51/1
L protection alarm or trip (overload) ---
K51/2
S protection alarm or trip (selective short-circuit) ---
K51/3
I protection trip (instantaneous short-circuit) ---
K51/4
G protection alarm or trip (earth fault) ---
K51/5
Communication problems on the local bus (bus KO) ---
K51/6
L function prealarm (overload) ---
K51/7
Protection release TRIP alarm ---
A = Backup protection alarm (Note 2) dip no. 4 = A
B = Hardware alarm dip no. 4 = B
K51/8
Electric
contact
Event that caused closing of the relay
Selection of dip-switches
no. 2, 3, 4
A = L protection alarm (overload) dip no. 2 = A
B = L protection trip (overload) dip no. 2 = B
A = S protection alarm (selective short-circuit) dip no. 3 = A
B = S protection trip (selective short-circuit) dip no. 3 = B
K51/3
I protection trip (instantaneous short-circuit) ---
K51/4
G protection alarm (earth fault) ---
K51/5
Communication problems on the local bus (bus KO) ---
K51/6
L function prealarm (overload) ---
K51/7
Protection release TRIP alarm ---
A = Backup protection alarm dip no. 4 = A
B = Hardware alarm dip no. 4 = B
K51/1
K51/2
K51/8