Binary Signals; Trigger Signals - Hitachi Relion 650 Series Technical Manual

1MRK 511 557-UEN Rev. A
12.4.6.10

Binary signals

Up to 96 binary signals can be selected to be handled by disturbance report. The signals can be
selected from internal logical and binary input signals. A binary signal is selected to be recorded
when:
• the corresponding function block is included in the configuration
• the signal is connected to the input of the function block
Each of the 96 signals can be selected as a trigger of the disturbance report (TrigDR = "On"). A
binary signal can be selected to activate the yellow (START) and red (TRIP) LED on the local HMI
(SetLED = Off/Start/Trip/Start and Trip).
The selected signals are presented in the event recorder, event list and the disturbance recording.
But they affect the whole disturbance report when they are used as triggers. The indications are also
selected from these 96 signals with local HMI IndicationMask=Show/Hide.
12.4.6.11

Trigger signals

The trigger conditions affect the entire disturbance report, except the event list, which runs
continuously. As soon as at least one trigger condition is fulfilled, a complete disturbance report is
recorded. On the other hand, if no trigger condition is fulfilled, there is no disturbance report, no
indications, and so on. This implies the importance of choosing the right signals as trigger conditions.
A trigger can be of type:
• Manual trigger
• Binary-signal trigger
• Analog-signal trigger (over/under function)
Manual trigger
A disturbance report can be manually triggered from the local HMI, PCM600 or via station bus (IEC
61850). When the trigger is activated, the manual trigger signal is generated. This feature is
especially useful for testing.
Binary-signal trigger
Any binary signal state (logic one or a logic zero) can be selected to generate a trigger ( Triglevel =
Trig on 0/Trig on 1). When a binary signal is selected to generate a trigger from a logic zero, the
selected signal will not be listed in the indications list of the disturbance report.
Analog-signal trigger
All analog signals are available for trigger purposes, no matter if they are recorded in the disturbance
recorder or not. The settings are OverTrigOp, UnderTrigOp, OverTrigLe and UnderTrigLe.
The check of the trigger condition is based on peak-to-peak values. When this is found, the absolute
average value of these two peak values is calculated. If the average value is above the threshold
level for an overvoltage or overcurrent trigger, this trigger is indicated with a greater than (>) sign with
the user-defined name.
If the average value is below the set threshold level for an undervoltage or undercurrent trigger, this
trigger is indicated with a less than (<) sign with its name. The procedure is separately performed for
each channel.
This method of checking the analog start conditions gives a function which is insensitive to DC offset
in the signal. The operate time for this start is typically in the range of one cycle, 20 ms for a 50 Hz
network.
All under/over trig signal information is available on the local HMI and PCM600.
Technical Manual
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Section 12
Monitoring
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