1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
REU 523
61
Drop-off/pick-up ratio D/P< of
stage U<
S91 1.01...1.05 1.03
Set start value of stage U<< S92 0.30...1.20 x U
n
0.30 x U
n
Operate time of stage U<< S93 0.10...600 s 0.10 s
Time multiplier k<< S94 0.10...2.00 0.10
Checksum, SGF1 S95 0...31 0
Checksum, SGF2 S96 0...255 0
Checksum, SGF3 S97 0...255 170
Checksum, SGF4 S98 0...63 0
Checksum, SGB1 S99 0...255 0
Checksum, SGR1 S100 0...15 12
Checksum, SGR2 S101 0...15 3
Checksum, SGR3 S102 0...15 12
Checksum, SGR4 S103 0...15 3
Checksum, SGR5 S104 0...15 12
Checksum, SGR6 S105 0...15 3
Checksum, SGR7 S106 0...15 12
Checksum, SGR8 S107 0...15 3
Table 9.-3 Control parameters
Variable Parameter Setting range Default setting
Customer’s
setting
Rated frequency V133 50/60 Hz 50
Rated Voltage V134 100, 110, 115,
120 V
100
Remote control of settings V150 0/1 0
Non-volatile memory settings V152 0...31 31
Event mask for U> and U>> V155 0...255 85
Event mask for U< and U<< V156 0...255 85
Event mask for output contacts’
events
V157 0...255 3
Event mask for the disturbance
recorder and the HMI password
V158 0...7 1
Unit address of the relay V200 1...254 1
Data transfer rate V201 4.8 or 9.6 kbps 9.6
Operate time of the CBFP S121 0.10...1.00 s 0.10
Time setting for disabling new
trip indications on the LCD
S122 0...999 min 60
Table 9.-2 Setting group 2
Variable
Group 2
(R, W, P)
Setting range Default setting
Customer’s
setting
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