ABB REX 521 Technical Reference Manual, Standard Configurations page 61

1MRS 751802-MUM Protection Relay
Technical Reference Manual, Standard Configurations
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RCLOSE
³1
CLOSE
Output
switchgroups
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I<->0 CB1 open
I<->0 CB1 close
3lth>
3I MCS
TCS
PQ 3Inf har
PQ 3Inf cum
CB wear
I<->0 CB1 open
I<->0 CB1 close
3lth>
3I MCS
TCS
PQ 3Inf har
PQ 3Inf cum
CB wear
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Master trip
Trip 1
³1
Lockout reset
Trip 2
Trip 3
External trip
CBFP
Close
Start 1
Start 2
Lockout
BSOUT
Alarm 1
Alarm 2
REX 521
High speed
tripping contact
HSPO1
Open
(X4.2.3/4/1/2)
³1
Lockout
S
HSPO1
Q Lockout working
R
1
Lockout
Lockout function
PO1 (X4.1.12/13)
PO2 (X4.1.14/15)
PO3 (X4.1.17/18)
SO1 (X4.1.8/7/6)
SO2 (X4.1.10/11/9)
Output relays
Output signals
61