2.2
Operation functionality
2.2.1
Optional functions
•
Modbus TCP/IP or RTU/ASCII
•
IEEE 1588 time v2 synchronization
•
High-availability seamless redundancy protocol (HSR)
•
Parallel redundancy protocol (PRP)
2.3
Physical hardware
The protection relay consists of two main parts: plug-in unit and case. The content
depends on the ordered functionality.
Table 2:
Plug-in unit and case
Main unit Slot ID
Content options
Plug-in
unit
-
HMI
Small (4 lines, 16 characters)
X100
Auxiliary
power/BO module
48...250 V DC/100...240 V AC; or 24...60 V DC
2 normally-open PO contacts
1 change-over SO contacts
1 normally-open SO contact
2 double-pole PO contacts with TCS
1 dedicated internal fault output contact
X120
AI/BI module
Configuration A:
3 differential phase current inputs (1/5 A)
1 residual current input (1/5 A or 0.2/1 A)
1)
4 binary inputs
Case
X000
Optional
communication
module
See technical manual for details about different type of
communication modules.
1) The 0.2/1 A input is normally used in applications requiring sensitive earth-fault protection and featuring
core-balance current transformers.
Rated values of the current and voltage inputs are basic setting parameters of the
protection relay. The binary input thresholds are selectable within the range 16…176
V DC by adjusting the binary input setting parameters.
See the installation manual for more information about the case and
the plug-in unit.
The connection diagrams of different hardware modules are presented in this manual.
Table 3:
Number of physical connections in configuration
Conf.
Analog channels
Binary channels
CT
VT
BI
BO
A
4
-
4
6
1MRS757455 E
Section 2
REB611 overview
REB611
11
Application Manual