Input / Output Connections - ABB REU 523 Technical Reference Manual

REU 523
42
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
Table 4.1.9.3-7 Control parameters
Description
Type designation of the relay
Reading of relay state data
Resetting of relay state data
Time reading and setting
Date and time reading and setting D
Input and output signals
The measured voltages and the status of the binary input signal can be read (R) with
parameters I1...I4. When the value of parameter I4 is 1, the binary input is
energized. The value of the calculated positive-phase-sequence voltage can be read
via parameter I5.
Table 4.1.9.3-8 Inputs
Description
Voltage U
12
Voltage U
23
Voltage U
31
Binary input signal BI
Positive-phase-sequence voltage
Each protection stage has its internal output signal. These signals can be read (R)
with parameters O1...O8. States of the output contacts can be read (R) or changed
(W) with parameters O9...O12. When any of the values of parameters O1...O12
changes from 0 to 1, it is recorded in the corresponding parameter of O21...O32. The
values recorded can be read via these parameters and they remain stored until reset.
Para-
R/W Value
meter
F R REU 523
C R 0=normal state
1=relay been subject to
automatic reset
2=overflow of event register
3=both events 1 and 2
C W 0=resetting all events
1=reset only E50
2=reset only E51
4=reset all events including E51
but not E50
T R, W 00.000...59.999 s
R, W YY-MM-DD HH.MM;SS.mss
Parameters (R)
I1
I2
I3
I4
I5
1MRS 750942-MUM
Value
0...2 x U
n
0...2 x U
n
0...2 x U
n
0 or 1
0...2 x U
n
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