P
T
T
T
T
d
=
−
+
−
(
)
(
)
2
1
5
4
2
GUID-0CB3B365-7081-43D4-90F5-91A8082522FE V2 EN
(Equation 160)
S
P
T
T
T
T
d
d
=
+
−
+
−
(
)
(
)
4
3
6
5
GUID-2940B36E-3A6C-44E4-BD39-1B117E168829 V2 EN
(Equation 161)
The sampling latency S
d
is calculated for each telegram on both ends. The algorithm
assumes that the one-way propagation delay P
d
is equal for both directions.
The echo method without GPS can be used in telecommunication transmission networks
as long as delay symmetry exists, that is, the sending and receiving delays are equal.
6.4.6
Signals
Table 764:
PCS Output signals
Name
Type
Description
OK
BOOLEAN
Protection communication ok
WARNING
BOOLEAN
Protection communication warning
ALARM
BOOLEAN
Protection communication alarm
COMM
BOOLEAN
Communication detected
6.4.7
Settings
Table 765:
PCS Non group settings (Advanced)
Parameter
Values (Range)
Unit
Step
Default
Description
Reset delay time
100...300000
ms
10
1000
Reset delay time from alarm and warning into
ok state
Alarm count
0...99999
1
0
Set new alarm count value
Warning count
0...99999
1
0
Set new warning count value
6.4.8
Monitored data
Table 766:
PCS Monitored data
Name
Type
Values (Range)
Unit
Description
Health
Enum
1=Ok
2=Warning
3=Alarm
-2=Waiting
Communication link health
Alarm count
INT32
0...99999
Number of alarms detected
WARN_CNT
INT32
0...99999
Number of warnings detected
Table continues on next page
1MAC059074-MB A
Section 6
Supervision functions
615 series ANSI
865
Technical Manual
Summary of Contents for Relion 615 series
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