Signals; Input Signals; Operation Principle; Technical Data - ABB RET650 Technical Manual

1MRK 504 135-UEN A
14.7.3
14.7.3.1
14.7.4
14.7.5
14.8
14.8.1
Technical manual

Signals

Input signals

The Event list logs the same binary input signals as configured for the Disturbance
report function.

Operation principle

When a binary signal, connected to the disturbance report function, changes status, the
event list function stores input name, status and time in the event list in chronological
order. The list can contain up to 1000 events from both internal logic signals and
binary input channels. If the list is full, the oldest event is overwritten when a new
event arrives.
The list can be configured to show oldest or newest events first with a setting on the
local HMI.
The event list function runs continuously, in contrast to the event recorder function,
which is only active during a disturbance.
The name of the binary signal that appears in the event recording is the user-defined
name assigned when the IED is configured. The same name is used in the disturbance
recorder function , indications and the event recorder function .
The event list is stored and managed separate from the disturbance report information .

Technical data

Table 383: DRPRDRE technical data
Function
Buffer capacity
Resolution
Accuracy

Trip value recorder

Functionality

Information about the pre-fault and fault values for currents and voltages are vital for
the disturbance evaluation.
Maximum number of events in the list
Section 14
Monitoring
Value
1000
1 ms
Depending on time
synchronizing
477