ABB REX 521 Technical Reference Manual, Standard Configurations page 40

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
3Ith>
X4.2.6/7 DI2
SYNC1
X4.2.8/9 DI3
Blocking 1
X4.2.9/10 DI4
X4.2.11/12 DI5
X4.2.13/14 DI6
X4.2.15/16 DI7
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
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
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
BS1 CBFP
BINCLOSE
BS2 BSOUT
GROUP START I<->O IND2
BS1 3I>
TRIP
DOUBLE BINOPEN
BS1 3I>>
RESET CBFP BINCLOSE
BS1 3I>>>
3I>>> I<->O POS
BS1 Io>-->
BINLOCAL
BS2 3I>
BS1 Io>>-->
CBFP
BINREMOTE
BS2 3I>> BS1
BS1 Io>>>-->
BS2 3I>>> BS2 BSOUT
BS1 Iub>
BS2 Io>--> GROUP START IL1
BS2 Io>>--> DOUBLE TRIP IL2
BS2 Io>>>--> RESET CBFP IL3
BS2 Iub>
Io>
BS 3Ith>
Io
CBFP
Uo
BACTRL
BS1 START
TRIP IL1
BS2
CBFP IL2
GROUP
IL3
RESET
Io
Io>>
Iob
Uo
U12
CBFP
U23
BACTRL START
Io>-->
BI1
BS1 TRIP
Io>>-->
BI2
BS2 CBFP
Io>>>-->
BI3
GROUP
RESET BI4
BI5
Io>>>
BI6
BI7
BI8
CBFP
BI9
BACTRL START
BI10
BS1 TRIP
BI11
I<->O CB1 BS2 CBFP
BI12
GROUP
SWGRP
BI13
RESET
TCS BS
CBO BI14
3I2f>
BI15
3I /I >
2f 1f
BI16
3dI/dt>
EXT_TRG
GROUP START
DC1 Iub>
I<->O IND1
UL1_U12
3∆I>
UL2_U23
UL3_U31
DC2
CBFP
BS1
START
BS2
TRIP
GROUP
ES1
I<->O IND2
CBFP
RESET
3Ith>
ES2
3
ϑ>
OPEN
Cab
BINOPEN
CBFP
BINCLOSE
BLOCK START
GROUP TRIP
Interlocking RESET CBFP
TCSSTATE
scheme
CU_ALARM
BS
CLOSEENA
I<->O CB1 O-->I
&
AR1 OPEN
AR2 CLOSE
AR3 DEFTRIP
AR4 LOCKOUT
ARINH
CBOPEN
TRIGG
CBCLOSE
RESET
ON
RESET
DOUBLE 3I>>
TRIGG
DOUBLE 3I>>>
SYNC
RESET
Command SC_OK
ALARM_NC
Output SWGRP's
Output signals
Master Trip
Trip 1
3I>
OOPEN
3I>>
OCLOSE
3I>>>
AOPEN
Io>-->
ACLOSE
Io>>-->
Io>>>-->
Iub>
3Ith>
3I>
3I>>
3I>>>
Trip 2
Io>-->
Io>>-->
Io>>>-->
Iub>
3I>
3Ith>
3I>>
3I
3I>>>
Trip 3
Io>-->
Io>>-->
Io>>>-->
Io Iub>
3Ith>
3I>
Uo
3I>>
3I>>>
Io>-->
DREC
External trip
Io>>-->
Io>>>-->
CBFP
Iub>
3Ith>
RCLOSE
Close
≥1
Start 3I> CLOSE
Start 3I>>
3I>
Start 3I>>>
3I>>
Start Io>-->
Start 1
Start Io>>--> 3I>>>
Start Io>>>--> Io>-->
Start Iub> Io>>-->
Start 3Ith> Io>>>-->
Trip 3I> Iub>
3Ith>
Trip 3I>> 3I>
Trip 3I>>> 3I>>
Trip Io>--> 3I>>>
Trip Io>>--> Io>-->
Start 2
Trip Io>>>--> Io>>-->
Trip Iub> Io>>>-->
Trip 3Ith> Iub>
Lockout
3Ith>
BSOUT
3U 3I>>
3I>>>
I<->0 CB1 open
I<->0 CB1 close
3Ith>
f Alarm 1
3I MCS
TCS
PQE PQ 3Inf har
PQ 3Inf cum
I<->0 CB1 open
CB wear
I<->0 CB1 close
CB wear 3U MCS
3Ith>
ALARM
PQ 3Unf har
3I MCS
PQ 3Unf cum
TCS
Alarm 2
PQ 3Inf har
PQ 3Inf cum
TCS1
CB wear
SHOT1
ALARM
3U MCS
SHOT2
PQ 3Unf har
SHOT3
MCS 3I
PQ 3Unf cum
SHOT4
ALARM
SHOT5 O-->I Active
TRDUE
MCS 3U
TDDUE
ALARM
ACTIVE AR1TRIP
PQ 3Inf
AR2TRIP
HAR_HIGH AR3TRIP
O-->I Alarm 1
CUM_HIGH AR4TRIP
CBFAIL
PQ 3Unf
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
Lockout reset R Lockout Working
1
Lockout
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)