ABB REX 521 Technical Reference Manual, Standard Configurations page 32

Digital
Input signals Input SWGRP's
inputs
SWGRP
O/C
E/F
Reset 1
Iub>
O/C
3Ith>
Selector
E/F
PQ 3Inf
Iub>
O-->I
3Ith>
Reset 2
PQ 3Inf
O-->I
Terminal
O/C
connection
E/F
Group
Iub>
X4.2.5/6 DI1
BS1 3I>-->
3Ith>
X4.2.6/7 DI2
BS1 3I>>-->
SYNC1
X4.2.8/9 DI3
Blocking 1
BS1 3I>>>
X4.2.9/10 DI4
BS1 Io>-->
X4.2.11/12 DI5
BS1 Io>>-->
X4.2.13/14 DI6
BS1 Io>>>-->
X4.2.15/16 DI7
BS1 Iub>
X4.2.17/18 DI8
X3.1.1/2 DI9
Blocking 2
DREC trig
PQ 3Inf trig
O-->I INH
O-->I ON
O-->I
O-->I Ext. start AR1
O-->I Ext. trip AR2
AR3
*)
AR4
Io>-->
BACTRL
Io>>-->
Io>>>-->
Master trip
Master trip
External trip
External trip
Lockout reset
Lockout reset
Remote
Close enable
Open
Close
CBO CBO
CB pos. open
CB pos. close
DC1 DC1
DC pos. open
DC2
DC2
DC pos. close
ES1 ES1
ES pos. open
ES2 ES2
ES pos. close
Logic input 1
Logic input 2
Interlocking
scheme
Logic input 3
Interlocking_A
Interlocking_B
Interlocking_C
Interlocking_D
Interlocking_E
Lockout Working
3I2f START
*) NOTE! The trip and start signals from the protection function blocks
are routed directly to the auto-recloser (0->1) via the input switchgroups
of the auto-recloser and are not shown in the diagram.
Function blocks
REX 521
Io> I<−>Ο CB1
OPEN OOPEN
OPENENA OCLOSE
CBFP
CLOSE AOPEN
BACTRL
CLOSEENA ACLOSE
START
BS1
BINOPEN
TRIP
BS2
BINCLOSE
GROUP CBFP
I<−>O IND1
RESET
BINOPEN
Io>>
BINCLOSE
I<−>O IND2
BINOPEN
CBFP
BACTRL START BINCLOSE
BS1 TRIP
I<->O POS
BS2 CBFP
BS2 3I>-->
BINLOCAL
GROUP
BS2 3I>>--> BINREMOTE
RESET
BS2 3I>>>
Io
BS2 Io>--> Io>>>
Io
BS2 Io>>-->
BS2 Io>>>--> Uo
BS2 Iub> CBFP
Uos
BACTRL START
BS 3Ith>
BS1 TRIP 3I
IL1
BS2 CBFP
IL2
GROUP
IL3
RESET
DREC
3I>
IL1
IL2
IL3
CBFP
Io
BACTRL START
Iob
BS1 TRIP
U1
BS2 CBFP
U2
GROUP
U3
RESET
BI1 Start 3I>-->
3I>>
BI2 Start 3I>>-->
BI3
Start 3I>>>
BI4
Start Io>-->
CBFP
BI5
Start Io>>-->
BACTRL BSOUT
BI6
Start Io>>>-->
BS1 START
BI7
Start Iub>
BS2 TRIP
BI8
Start 3Ith>
GROUP CBFP
BI9
Trip 3I>-->
DOUBLE
BI10
Trip 3I>>-->
RESET
I<->O CB1
BI11
Trip 3I>>>
SWGRP 3I>>>
BI12
Trip Io>-->
BI13
TCS BS Trip Io>>-->
CBFP
BS1 BI14
Trip Io>>>-->
BS2 BSOUT BI15
Trip Iub>
GROUP START BI16
Trip 3Ith>
DOUBLE TRIP EXT_TRG
RESET CBFP
I<->O IND1
3I2f>
3U
3I /I >
UL1_U12
1f
2f
3dI/dt> UL2_U23
GROUP START
UL3_U31
Iub>
f
I<->O IND2
3∆I>
CBFP
PQE
BS1
BS2 START
GROUP TRIP
CB wear
RESET CBFP
OPEN ALARM
3Ith>
BINOPEN
3
BINCLOSE
ϑ>
TCS1
Cab
CLOSEENA
CBFP
I<->O CB1 TCSSTATE
BLOCK START
&
BS ALARM
GROUP TRIP
RESET CBFP MCS 3I
CU_ALARM
ALARM
O−−>I
MCS 3U
AR1
OPEN
ALARM
AR2 CLOSE
AR3 DEFTRIP
PQ 3Inf
AR4 LOCKOUT
TRIGG HAR_HIGH
DOUBLE 3I>>--> ARINH
RESET CUM_HIGH
DOUBLE 3I>>> CBOPEN
CBCLOSE
ON
RESET
SYNC
Command SC_OK
Output SWGRP's
Output signals
Master Trip
Trip 1
≥1
3I>-->
3I>>-->
3I>>>
Io>-->
Io>>-->
Lockout reset
Io>>>-->
Iub>
3Ith>
3I>-->
3I>>-->
3I>>>
Trip 2
Io>-->
Io>>-->
Io>>>-->
Iub>
3I>-->
3Ith>
3I>>-->
Trip 3
3I>>>
Io>-->
Io>>-->
Io>>>-->
Iub>
3Ith>
3I>-->
3I>>-->
3I>>>
External trip
Io>-->
Io>>-->
Io>>>--> CBFP
Iub>
3Ith>
RCLOSE
Close
≥1
CLOSE
3I>-->
3I>>-->
Start 1
3I>>>
Io>-->
Io>>-->
Io>>>-->
Iub>
3Ith>
3I>-->
3I>>-->
3I>>>
Io>-->
Start 2
Io>>-->
Io>>>-->
Iub>
Lockout
3Ith>
BSOUT
3I>>-->
3I>>>
I<->0 CB1 open
I<->0 CB1 close
3Ith>
Alarm 1
3I MCS
TCS
PQ 3Inf har
PQ 3Inf cum
I<->0 CB1 open
CB wear
I<->0 CB1 close
3U MCS
3Ith>
3I MCS
TCS
Alarm 2
PQ 3Inf har
PQ 3Inf cum
CB wear
SHOT1
3U MCS
SHOT2
SHOT3
SHOT4
SHOT5 O-->I Active
TRDUE
TDDUE
AR1TRIP
ACTIVE
AR2TRIP
AR3TRIP
O-->I Alarm 1
AR4TRIP
CBFAIL
DEFTRIP
AR1TRIP
LOCKOUT
AR2TRIP
SHOT_ALARM
AR3TRIP
AR4TRIP
CBFAIL
DEFTRIP
O-->I Alarm 2
LOCKOUT
SHOT_ALARM
3I2f START
Output relays
Ropen
Open
HSPO1
(X4.2.3/4/1/2)
≥1
Lockout
S HSPO1
Q
Lockout Working
R
1
Lockout
PO1 (X4.1.12/13)
PO2 (X4.1.14/15)
PO3 (X4.1.17/18)
SO1 (X4.1.8/7/6)
(X4.1.10/11/9)
SO2