ABB SACE PR021/K

L3016
1SDH000559R0002
18/52
ABB SACE
SACE PR021/K
In the example, the PR021/K has been set as follows:
• Self-test function disabled
• K51 configuration = A-A-A-A
• Master mode
• Baud rate = 19.2Kb/s
• Stand-by function not active
• Manual Reset mode
• Latch mode disabled
• Local bus not terminated
Example of dip-switch settings for the PR021/K unit to be connected to the SACE PR112/P release
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).
Note 5: If a trip is caused by a protection function not included in the set of signals (for example, a trip for “protection
G” has occurred but the K51/4 relay was set for the “Function L prealarm” signal), only the K51/7 relay (the
protection release TRIP alarm) will be switched.
5.5.2. Signals
The signals (K51/1...K51/8) for the SACE PR112 protection release may be divided into 2 modes: Normal and Latch. A
description of the signals in these modes is given below.
5.5.2.1. Normal mode (see par. 4.5.1)
Dip-switch no. 11 to be set to its OFF position.
12 34
56
78
910
11
12 13
OFF
ON
12345678
91011
12 13
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) ---
A = G protection alarm or trip (earth fault) dip no. 2 = A
B = L function prealarm (overload) dip no. 2 = B
Communication problems on the local bus (bus KO) dip no. 3 = A
Internal overtemperature alarm or trip dip no. 3 = B
K51/6
LC1 load control (Note 2) ---
K51/7
Protection release TRIP alarm ---
K51/8
LC2 load control (Note 2) ---
K51/5
K51/4