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1MRS 751108-MUM
Protection Relay
Technical Reference Manual, General
REX 521
27
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In the system described in the figure above, communication is usually arranged as
shown in the table below.
The LAG 1.4 default communication settings may be loaded by selecting the “Load
Default configuration” option from the front panel. This operation blanks the
internal EEPROM and boots the Neuron chip. Thereafter, the default
communication settings are loaded and stored into the Neuron chip. This operation
takes approximately 15 seconds according to LAG 1.4.
From the front panel, the user should configure the “Node number”, the “Subnet
number” and the “Bit rate” of the REX 521 device.
The LON bus event buffer includes 150 last events.
Data type
REX
↔
MicroSCADA
Events and alarms
sliding window protocol
Control commands
sliding window protocol
transparent SPA bus messages
Status of breakers and isolators
sliding window protocol
Analogue measurement values
sliding window protocol
Other DI, AI data
sliding window protocol
Other DO data
transparent SPA bus messages
Parameter data
transparent SPA bus messages
Disturbance recorder data
file transfer over the LON network
ABB Network Partner
O
I
SPAC 331 C
lonsysrex
C
E
F
I
0
DI, AI and DO modules
LonMark devices
SPA bus module
connected
over LON/SPA-
gateways
REX 521 protection relays
Electrical LON
network
RER 111 LON
star-coupler
Router card in
RER 111 LON
star-coupler
LON/SPA
gateway
Fibre-optic
LON network
MicroSCADA
PCLTA card and
RER 107 inside PC
RER 111 LON
SFIBER connection
cards
REXFRONT
C
E
START
READY
TRIP
FEEDER PROTECTION REX 521
Order No: REX521 AMHPL
Serial No: 000001
Uaux = 110-240 Vac
Uaux = 110-220 Vdc
fn = 50/60 Hz
Un = 100-120 V
In = 1/5A, 0.2/1 A (Io, Iob)
In = 1/5A
REXFRONT
C
E
START
READY
TRIP
FEEDER PROTECTION REX 521
Order No: REX521 AMHPL
Serial No: 000001
Uaux = 110-240 Vac
Uaux = 110-220 Vdc
fn = 50/60 Hz
Un = 100-120 V
In = 1/5A, 0.2/1 A (Io, Iob)
In = 1/5A
REF 54_
feeder terminal
RER 103
Содержание REX 521
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