ABB REX 521 Technical Reference Manual, Standard Configurations page 44

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 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
BS1 Io>
X3.1.1/2 DI9
BS1 Io>>
BS1 Io>>>
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
Io>-->
BACTRL
Io>>-->
Io>>>-->
Master trip
Master trip
External trip
External trip
Lockout reset
Lockout reset
Remote
Close enable
Open
Close
CBO
CB pos. open
CB pos. close
DC1
DC pos. open
DC2
DC pos. close
ES1
ES pos. open
ES2
ES pos. close
Logic input 1
Logic input 2
Interlocking
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
3I> I<->O CB1
OPEN
OPENENA
CBFP
BS1
CLOSE
BS2
START
CLOSEENA
GROUP TRIP
BINOPEN
RESET
CBFP
BINCLOSE
3I>>
I<->O IND1
BINOPEN
CBFP
BS1
BINCLOSE
BS2 BSOUT
START I<->O IND2
GROUP
DOUBLE TRIP BINOPEN
RESET CBFP
BS2 3I> BINCLOSE
BS2 3I>>
3I>>> I<->O POS
BS2 3I>>>
BINLOCAL
BS2 Io>-->
CBFP
BS1 BINREMOTE
BS2 Io>>-->
BS2 BSOUT
BS2 Io>>>-->
GROUP START IL1
BS2 Iub>
DOUBLE TRIP IL2
BS 3Ith>
RESET CBFP IL3
BS2 Io>
Io>
BS2 Io>>
Io
BS2 Io>>>
CBFP
Uo
BACTRL
BS1 START
DREC
TRIP IL1
BS2
IL2
GROUP CBFP
IL3
RESET
Io
Io>>
Iob
Uo
U12
CBFP
U23
BACTRL START
BS1 TRIP U31
BI1
BS2 CBFP
GROUP BI2
BI3
RESET
BI4
Io>>>
BI5
BI6
Start Io>>>-->
BI7
CBFP
BACTRL BI8
START
BI9
BS1 TRIP
BS2 BI10
I<->O CB1 CBFP
BI11
GROUP
SWGRP
RESET BI12
TCS BS BI13
CBO
3I2f>
BI14
3I /I >
1f
2f BI15
3dI/dt>
BI16
START
GROUP
EXT_TRG
Iub>
DC1
I<->O IND1
3∆I>
UL1_U12
UL2_U23
DC2
CBFP
UL3_U31
BS1
BS2 START
TRIP
GROUP
ES1
I<->O IND2
RESET CBFP
3Ith>
ES2
3
ϑ>
CB wear
Cab
OPEN
CBFP
BINOPEN
BLOCK START
BINCLOSE
GROUP TRIP
TCS1
RESET CBFP
TCSSTATE
scheme CU_ALARM
BS
CLOSEENA
O-->I
I<->O CB1
MCS 3I
& AR1 OPEN
AR2 CLOSE
AR3 DEFTRIP
MCS 3U
AR4 LOCKOUT
ARINH
CBOPEN PQ 3Inf
CBCLOSE
TRIGG
ON RESET
RESET
DOUBLE 3I>>
PQ 3Unf
Io>
DOUBLE 3I>>> TRIGG
RESET
CBFP
BS1
BS2 START
GROUP TRIP
RESET CBFP
Io>>
CBFP
BS1
BS2 START
TRIP
GROUP
RESET CBFP
Io>>>
CBFP
BS1
BS2 START
GROUP TRIP
RESET CBFP
Output SWGRP's Output signals
Master Trip
Trip 1
3I>
OOPEN
3I>>
OCLOSE
3I>>>
AOPEN
Io>-->
ACLOSE
Io>>-->
3I>
Io>>>-->
3I>>
Iub>
3I>>>
3Ith>
Io>-->
Io>
Io>>-->
Io>>
Io>>>-->
Io>>>
Iub>
Trip 2
3Ith>
Io>
Io>>
3I>
Io>>>
3I>>
3I
3I>>>
Trip 3
Io>-->
Io>>-->
Io>>>-->
Io Iub>
3I>
3Ith>
3I>>
Io>
Uo
3I>>>
Io>>
Io>-->
Io>>>
Io>>-->
Io>>>--> External trip
Iub>
3Ith>
CBFP
Io>
Io>>
Io>>>
RCLOSE
Close
≥1
CLOSE
Start 3I>
3I>
Start 3I>>
3I>>
Start 3I>>>
3I>>>
Start 1
Start Io>-->
Io>-->
Start Io>>-->
Io>>-->
Io>>>-->
Start Io> 3I>
Iub>
3I>>
Start Io>>
3Ith>
Start Io>>> 3I>>>
Io>
Io>-->
Start Iub>
Io>>
Start 3Ith> Io>>-->
Io>>>
Io>>>-->
Trip1
Trip2 Iub> Start 2
3Ith>
Trip3
Io>
Io>> Lockout
Io>>>
BSOUT
3I>>
3U
3I>>>
I<->0 CB1 open
I<->0 CB1 close
3Ith>
Alarm 1
f
3I MCS
TCS
PQ 3Inf har
PQE
PQ 3Inf cum
I<->0 CB1 open
CB wear I<->0 CB1 close
3U MCS
3Ith>
ALARM PQ 3Unf har 3I MCS
PQ 3Unf cum
TCS
Alarm 2
PQ 3Inf har
PQ 3Inf cum
CB wear
SHOT1
ALARM 3U MCS
SHOT2
PQ 3Unf har
SHOT3
PQ 3Unf cum
SHOT4
ALARM
SHOT5 O-->I Active
TRDUE
TDDUE
ALARM
AR1TRIP
ACTIVE
AR2TRIP
AR3TRIP
HAR_HIGH O-->I Alarm 1
AR4TRIP
CUM_HIGH
CBFAIL
DEFTRIP
AR1TRIP
HAR_HIGH LOCKOUT
AR2TRIP
CUM_HIGH 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 ≥1
Lockout
S
HSPO1
Q
R Lockout Working
Lockout reset
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