ABB REX 521 - Input Signals

66
1MRS751802-MUM
Protection Relay
Technical Reference Manual, Standard Configurations
REX 521
4.1.3. Input signals
The figure below shows a part of the overview diagram focusing on input signals.
Fig. 4.1.3.-1 Description of the input signal routing diagram
Object status indications to SCADA systems
Function blocks 1<->0 IND1 and 1<->0 IND2 are used for generating events from
the disconnector DC pos. open/close and earthswitch ES pos. open/close to the
substation control system via the communication port.
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI8
DI9
Selector
Reset 1
Reset 2
Group
Blocking 1
Blocking 2
DREC trig
PQ 3Inf trig
BACTRL
Master trip
External trip
Lockout reset
Remote
Close enable
Open
Close
CB pos. open
CB pos. close
DC pos. open
DC pos. close
ES pos. open
ES pos. close
Logic input 1
Logic input 2
Logic input 3
Lockout working
CLOSEENA
I<->O IND1
I<->O IND2
DC1
DC2
DC1
DC2
ES1
ES1
ES2
ES2
CBO
CBO
TCS BS
SWGRP
O/C
E/F
Iub>
3Ith>
PQ 3Inf
O/C
E/F
Iub>
3Ith>
PQ 3Inf
O/C
E/F
Iub>
3Ith>
BS1 3I>
BS1 3I>>
BS1 3I>>>
BS1 Io>-->
BS1 Io>>-->
BS1 Io>>>-->
BS1 Iub>
BS2 3I>
BS2 3I>>
BS2 3I>>>
BS2 Io>-->
BS2 Io>>-->
BS2 Io>>>-->
BS2 Iub>
BS 3lth>
Io>-->
Io>>-->
Io>>>-->
SWGRP
Digital
inputs
- The control of the CB
- Object indication
- Interlocking
Interlocking
options
Input switchgroups
- Master trip
- External trip
- Lockout reset
Control operations
to the circuit breaker
The object status
indications for
SCADA systems
InputOverview
Trip circuit supervision
Local/remote selection
Input switchgroup
- Disturbance recorder trigger
- Power quality trigger
Master trip
External trip
Lockout reset
&
Interlocking_A
Interlocking_B
Interlocking_C
Interlocking_D
Interlocking_E
I<->O CB1
I<->O CB1
Interlocking
scheme
Input signals