Acc Actual Channel; Generic Reb500 Functions; Diagnostic Information - ABB REB500 Communication Protocol Manual

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3.4
3.5
3.5.1
Communication Protocol Manual, IEC 60870-5-103
Distributed busbar protection REB500

ACC actual channel

The REB500 Bay Unit 500BU04 supports five voltage channels. Since, however,
the compatible range of the standard only lists four voltage channels, the fifth
channel is transferred to the private domain.
Assignment of REB500 channels to IEC 60870-5-103 channel numbers:
Table 14 IEC 60870-5-103 analog channel assignment
REB500 channel REB500
designation application
I1 I L1
I2 I L2
I3 I L3
I4 I L0
U1 U L1
U2 U L2
U3 U L3
U4 U L0
U5 U 5

Generic REB500 functions

Diagnostic information

Status and diagnostic information is generated by the various REB500 application
software modules and transferred spontaneously as events every time the status
changes. A separate group exists for diagnostic information with an entry for every
subsystem of the REB500 system software REBSYS.
Diagnostic event group:
Section 3
IEC 60870-5-103
IEC 60870-5-103 channel designation
ACC (actual channel)
1 = I L1
2 = I L2
3 = I L3
4 = V L1
5 = V L1E
6 = V L3
7 = V 0E
8 = U L1
64 = private
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