ABB REX 521 - Page 30

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1MRS 751107-MUM
Protection Relay
Operator’s Manual
REX 521
L
Latched output relays
Resetting ............................................................................................. 11
LED indicators ..................................................................................... 9, 25
READY .............................................................................................. 25
START ............................................................................................... 25
TRIP ................................................................................................... 25
Local control ............................................................................................ 18
Local/Remote position ............................................................................. 18
Changing control position .................................................................. 18
Control positions ................................................................................18
M
Manual control ......................................................................................... 18
Messages ............................................................................................ 20
Measurement menu .................................................................................. 16
Measurement view ................................................................................... 16
Menu chart ................................................................................................ 15
O
Object control menu ................................................................................. 19
Optically isolated serial communication port ........................................... 14
Output relays
Testing ................................................................................................ 27
P
Parameters ................................................................................................ 21
Setting ................................................................................................ 21
Passwords ................................................................................................. 13
Disabling HMI password ................................................................... 13
HMI password .................................................................................... 13
Serial communication password ........................................................ 13
Primary values .......................................................................................... 14
Push-buttons ............................................................................................. 11
Arrow button ...................................................................................... 11
Functions ............................................................................................ 11
Operating the relay ............................................................................. 11
R
Remote control ......................................................................................... 18
REX 521 protection relay features ............................................................. 8
S
Selecting language .................................................................................... 12