ABB REX 521 Technical Reference Manual, Standard Configurations page 36

Digital
Input signals Input SWGRP's
inputs
SWGRP
O/C
E/F
Reset 1
Iub>
O/C
3Ith>
E/F
Selector
PQ 3Inf
Iub>
PQ 3Unf
3Ith>
O-->I PQ 3Inf
Reset 2
PQ 3Unf
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>>-->
X4.2.8/9 DI3
Blocking 1
BS1 3I>
X4.2.9/10 DI4
BS1 3I>>
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
PQ 3Unf trig
O-->I INH
O-->I ON
O-->I
O-->I Ext. start AR1
O-->I Ext. trip AR2
AR3
*)
AR4
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
BS1 START
BINOPEN
BS2 TRIP
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
BINLOCAL
GROUP
BINREMOTE
BS2 3I>-->
RESET
BS2 3I>>-->
Io
BS2 3I> Io
3I>
BS2 3I>>
Uo
BS2 Io>-->
CBFP
BS1
Uo
BS2 Io>>-->
BS2 START
BS2 Iub>
GROUP TRIP
3I
BS 3Ith>
IL1
RESET CBFP
IL2
3I>>
IL3
CBFP DREC
BS1
IL1
BS2 BSOUT
IL2
GROUP START
IL3
DOUBLE TRIP
Io
RESET CBFP
Iob
Uo
3I>
U12
U23
U31
CBFP
BACTRL START
BI1 Start 3I>-->
BS1
TRIP BI2
Start 3I>>-->
BS2
CBFP BI3
Start 3I>
GROUP BI4
Start 3I>>
RESET BI5
Start Io>-->
BI6
Start Io>>-->
3I>>
BI7
Start Iub>
BI8 Start 3Ith>
CBFP BI9 Trip 1
BACTRL BSOUT
BI10 Trip 2
I<->O CB1 BS1 START
BI11
Trip 3
TRIP
BS2 BI12
SWGRP
GROUP CBFP BI13
TCS BS
DOUBLE BI14
RESET BI15
BI16
3I2f>
EXT_TRG
3I /I >
1f
2f
3dI/dt>
I<->O IND1 3U
GROUP START
UL1_U12
Iub> UL2_U23
3∆I> UL3_U31
f
CBFP
BS1
I<->O IND2
BS2 START
GROUP TRIP
PQE
RESET CBFP
3Ith>
CB wear
3
OPEN ALARM
ϑ>
BINOPEN
Cab
BINCLOSE
CBFP
BLOCK START
TCS1
GROUP TRIP
RESET CBFP
TCSSTATE
CLOSEENA
CU_ALARM
I<->O CB1 ALARM
BS
&
O−−>I MCS 3I
AR1 OPEN
ALARM
AR2 CLOSE
AR3 DEFTRIP
MCS 3U
AR4 LOCKOUT
ALARM
ARINH
CBOPEN PQ 3Inf
CBCLOSE
HAR_HIGH
TRIGG
ON
RESET CUM_HIGH
DOUBLE 3I>>-->
RESET
DOUBLE 3I>>
PQ 3Unf
TRIGG HAR_HIGH
RESET CUM_HIGH
Output SWGRP's
Output signals
Master Trip
Trip 1
≥1
3I>-->
3I>>-->
3I>
3I>>
Io>--> Lockout reset
Io>>-->
Iub>
3Ith>
3I>-->
3I>>-->
3I>
3I>> Trip 2
Io>-->
Io>>-->
Iub>
3I>-->
3Ith>
3I>>-->
3I>
Trip 3
3I>>
Io>-->
Io>>-->
Iub>
3Ith>
3I>-->
3I>>-->
3I>
3I>>
External trip
Io>-->
Io>>-->
CBFP
Iub>
3Ith>
RCLOSE
Close
≥1
CLOSE
3I>-->
3I>>-->
Start 1
3I>
3I>>
Io>-->
Io>>-->
Iub>
3I>-->
3Ith>
3I>>-->
3I>
3I>>
Io>-->
Start 2
Io>>-->
Iub>
3Ith>
Lockout
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>
PQ 3Unf har
3I MCS
PQ 3Unf cum
TCS
Alarm 2
PQ 3Inf har
PQ 3Inf cum
CB wear
SHOT1
3U MCS
SHOT2
PQ 3Unf har
SHOT3
PQ 3Unf cum
SHOT4
SHOT5 O-->I Active
TRDUE
TDDUE
ACTIVE AR1TRIP
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
R Lockout Working
1
Lockout
(X4.1.12/13)
PO1
(X4.1.14/15)
PO2
PO3
(X4.1.17/18)
SO1 (X4.1.8/7/6)
SO2 (X4.1.10/11/9)