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1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
REU 523
Control parameters
Table 4.1.10.4-7 Control parameters
Description
Parameter
R, W
Value
Unlatching output contacts
V101
W
1 = unlatch
Clearing registers and unlatching
output contacts
V102
W
1 = clear and unlatch
Rated frequency
V133
R, W (P)
50=50 Hz
60=60 Hz
Nominal voltage
V134
R, W (P)
100, 110, 115, 120 (V)
Remote control of settings
V150
R, W
0 = setting group 1
1 = setting group 2
Non-volatile memory settings
V152
R, W
0...31
Event mask for U> and U>>
V155
R, W
0...255, see Event codes
Event mask for U< and U<<
V156
R, W
0...255, see Event codes
Event mask for output contacts’
events
V157
R, W
0...255, see Event codes
Event mask for the disturbance
recorder and the HMI password
V158
R, W
0...7, see Event codes
Entering the SPA password for
settings
V160
W
1...999
Changing the SPA password or
reinstating the password
protection
V161
W (P)
1...999
Changing the HMI password
V162
W
1...999
999 = password disabled
Activating the self-supervision
V165
W
1 = the self-supervision output
contact is activated and the
READY indicator LED starts to
blink
0 = normal operation
LED test for start and trip
indicators
V166
W (P)
0 = start and trip LEDs off
1 = trip LED on, start LED off
2 = start LED on, trip LED off
3 = start and trip LEDs on
Default settings
V167
W (P)
2 = restore factory settings
Internal fault code
V169
R
0...255
Unit address of the relay
V200
R, W
1...254
Data transfer rate, kbps
V201
R, W
4.8 or 9.6
Rear communication
V202
W
1 = rear connector activated
Relay serial number
V230
R
ERxxxxxx
CPU serial number
V231
R
MRxxxxxx
Article number
V232
R
1MRS091409-BAA
Test date
V233
R
YYYYMMDD
Software number
V234
R
1MRS118017
Software revision
V235
R
A...Z
Date reading and setting
(RED 500 format)
V250
R, W
YY-MM-DD
Time reading and setting
(RED 500 format)
V251
R, W
HH.MM; SS.sss
Reading of an event register
L
R
Time, channel number and
event code