Seg MRU3-1, Manual

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22 TB MRU3-1 12.00 E
7.3 Setting ranges and steps
Function Para-
meter Setting range Steps Tolerance
Transformer ratio U
prim
/U
sek
(sek) 1.01...6500 0.01; 0.02; 0.05; 0.1;
0.2; 0.5; 1.0; 2.0; 5.0;
10; 20; 50
Rated frequency f
N
f = 50/f = 60/v = 50/v = 60
Switch group D/Y D = DELT/Y = Y
LED blinking at pick-
up FLSH/NOFL
Parameter
switch/external
triggering for FR
P2/FR SET1, SET2, B_S2, R_S2, R_S2,
B_FR, R_FR, S2_FR
1/3-phase
tripping 1/3 U<>1; U<>3
U</<< U</<<
t
U<
/t
U<<
U
N
= 100 V:
2...200 V (EXIT)
U
N
= 230 V:
2...460 V (EXIT)
U
N
= 400 V:
4...800 V (EXIT)
0.04...50 s (EXIT)
1 V
1 V
2 V
0.01; 0.02; 0.05; 0.1;
0.2; 0.5; 1.0; 2.0 s
±
1% of set value or
<0.3% U
N
±
1% oder
±
15 ms
U>/>> U>/>>
t
U>
/t
U>>
U
N
= 100 V:
2...200 V (EXIT)
U
N
= 230 V:
2...460 V (EXIT)
U
N
= 400 V:
4...800 V (EXIT)
0.04...50 s (EXIT)
1 V
1 V
2 V
0.01; 0.02; 0.05; 0.1;
0.2; 0.5; 1.0; 2.0 s
±
1% of set value or
<0,3% U
N
±
1% or
±
15 ms
7.3.1 Interface parameter
Function Parameter Modbus-Protocol RS485 Open Data Protocol
RS Slave-Adresse 1 - 32 1 – 32
RS Baud-Rate* 1200, 2400, 4800, 9600 9600 (fixed)
RS Parity* even, odd, no „even Parity“ (fixed)
* only Modbus Protocol
7.3.2 Parameter for the fault recorder
Function Parameter Adjustment example
FR Number of recordings (1)*2 x 8 s; (3)*4 x 4 s; (7)*8 x 2 s (50 Hz)
(1)*2 x 6.66 s, (3)*4 x 3.33 s, (7)*8 x 1.66 s
(60 Hz)
FR Savings of the recording at the occurence P_UP; TRIP; A_PI; TEST
FR Pre-trigger-time 0.05 s – 8.00 s
*is written over when a new trigger signal arrives
7.4 Output relays
Trip relays/change-over contacts Alarm relaya/change-over contacts
MRU3 2/2 3/1