ABB REU 523 Technical Reference Manual page 26

REU 523
26
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
SGB1
Table 4.1.4.6-6 SGB1 Resetting/blocking with BI
Switch Function
SGB1/1 • 0 = indications are not cleared by the binary input signal
• 1 = indications are cleared by the binary input signal
SGB1/2 • 0 = indications are not cleared and latched output contacts are
not unlatched by the binary input signal
• 1 = indications are cleared and latched output contacts are
unlatched by the binary input signal
SGB1/3 • 0 = indications and memorized values are not cleared and
latched output contacts are not unlatched by the binary input
signal
• 1 = indications and memorized values are cleared and latched
output contacts are unlatched by the binary input signal
SGB1/4 Switching between setting groups 1 and 2 using the external
binary input
• 0 = the setting group cannot be changed using the external
binary input
• 1 = the currently used setting group is determined by the binary
input. When the binary input is energized, setting group 2 will be
activated.
Note!
When SGB1/4 is set to 1, it is important that the switch has the
same setting in both setting groups.
SGB1/5 Blocking of stage U> by the binary input signal
SGB1/6 Blocking of stage U>> by the binary input signal
SGB1/7 Blocking of stage U< by the binary input signal
SGB1/8 Blocking of stage U<< by the binary input signal
• When SGB1/5...8=0, tripping of the stage will not be blocked by
the external binary input signal.
• When SGB1/5...8=1, tripping of the stage will be blocked by the
external binary input signal.
Σ SGB1
SGR1...SGR8
The start and trip signals from the protection stages are connected to the output
contacts with the switches of switchgroups SGR1...SGR8.
The matrix below can be of help when making the desired selections. The start and
trip signals from the different protection stages are combined with the output
contacts by encircling the desired intersection point. Each intersection point is
marked with a switch number, and the corresponding weighting factor of the switch
is shown on the bottom line of the matrix. The switchgroup checksum is obtained by
horizontally adding the weighting factors of all the selected switches of the
switchgroup.
1MRS 750942-MUM
Default
setting
0
0
0
0
0
0
0
0
0