Configuration - ABB REU 523 Technical Reference Manual
Combined overvoltage and undervoltage relay
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- Technical reference manual (69 pages) ,
- Manual (10 pages) ,
- Manual (10 pages)
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REU 523
4.1.2.
12
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
READY
START
TRIP
INTERNAL FAULT
FAULT CODE :56
C
E
)LJ
,QWHUQDO IDXOW
Fault codes can indicate:
• No response on output contact test.
• Faulty program memory, work memory or parameter memory.
• Too high or too low a reference voltage value.
Configuration
The figure below illustrates how the start, trip and binary input signals can be
configured so that the required protection functions are obtained.
BI
X2.1
17 18
3U>
U12
SGB1
5
Blocking of stage U>
U23
3U>>
U31
SGB1
6
Blocking of stage U>>
3U<
7
SGB1
Blocking of stage U<
3U<<
SGB1
8
Blocking of stage U<<
SGB1
1
INDICATORS RESET
2
SGB1
RELAYS RESET
MEMORIZED VALUES
SGB1
3
RESET
)LJ
6LJQDO GLDJUDP RI WKH RYHUYROWDJH DQG XQGHUYROWDJH UHOD\
A certain functionality can be achieved with the configuration of the start, trip and
binary input signals. The operation of the protection functions and indications can
be configured as well. The functionality is selected with the switches of
switchgroups SGF (Functions), SGB (Binary Input/Blockings) and SGR (Relays).
The functions of these switches are explained in detail in the corresponding SG_-
tables.
IRF
SO2
13 14 15
10 11 12
IRF
SGR1
START
SGR2
TRIP
SGR3
START
SGR4
TRIP
SGR5
START
SGR6
TRIP
SGR7
START
SGR8
TRIP
I/O
SGF1...SGF4
1MRS 750942-MUM
SO1
PO2
PO1
5 6
3 4
7 8 9
4
3
2
4
3
2
4
3
2
4
3
2
2
4
3
3
2
4
3
2
4
4
3
2
ABB Automation
1
1
1
1
1
1
1
1
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