Configuring Iec 60870-5-103 Indications; Class 1 Event Overflow - ABB Relion 615 series Manual

1MRS756710 C
3.3.2.2
3.3.2.3
615 series
Communication Protocol Manual

Configuring IEC 60870-5-103 indications

With PCM600 the user can re-configure the default IEC 60870-5-103 indication
definitions. Re-configuration options include:
• Adding or removing existing indications
• Changing function type/information number definition of indication
• Restoring default function type/information number definition of indications
• Changing GI assignment of indications
• Changing ASDU type used by the indications
• Changing the DPI value representation (four-pole objects only)
• Suppressing falling edge Class 1 events (non-standard feature)
Changing the DPI value representation means that the DPI value only shows the
standard defined ON and OFF values instead of four-pole values ON, OFF,
INTERMEDIATE and ERROR.
Table 5: Conversion rule for the DPI value representation
True object position
ON
OFF
INTERMEDIATE
ERROR
Suppressing the falling edge, that is the OFF Class 1 events, is useful in some
cases. For example, the Operate-OFF signals could often be omitted. This
decreases the amount of Class 1 events and thus saves the bandwidth.
Suppressing the OFF event is an non-standard feature. The standard requires that
every position change of a Class 1 object is reported.

Class 1 event overflow

The size of the Class 1 event buffer in the IED is 500 events. The IEC 60870-5-103
standard does not define any method of indicating Class 1 event buffer overflows.
Instead, the standard suggests that the master performs a general interrogation
integrity scan every 15 minutes (or more), in order to detect indications that have
not been updated.
The IED contains a special overflow Class 1 ASDU 1 indication. The default
setting of this overflow indication is FUN = 10, INF = 255. The FUN/INF
definition can be changed if required. This object creates an ON event when the
overflow occurs. It is also possible to take the overflow operation completely out of
use and operate without any overflow indication as the IEC 60870-5-103 standard
defines. The IEC 60870-5-103 instances can also be configured differently.
Vendor-specific implementation
IEC 60870-5-103 value
ON
OFF
ON
ON
Section 3
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