GE RPV311, Technical Manual

Page: 66 / 295

Chapter 4
– Configuration
RPV311
66 RPV311-TM-EN-7
6 Digital Channels
The acquisition is simultaneous and synchronized with a time resolution of 65.104 𝜇 s
at 60 Hz or 78.125
𝜇
s at 50 Hz. The polarity is user-programmable (active high, active
low).
Digital channels can be associated with physical electrical digital inputs or
associated with the detection of IEC61850 GOOSE messages. For details about the
GOOSE messages, see Chapter 11: GOOSE Message Detection. The level of the state
transitions for physical inputs can be seen in Chapter 17: Technical Specifications
It is possible to adjust denouncing of the digital input to eliminate the effect of
switching of the relay contacts. The debounce time has a 0 to 20ms with 1ms steps.
All transitions of the digital channels are stored in the sequence of events (SOE)
record.
To add a new digital channel, select the Digital Channels section and fill in the
following:
The I
DENTIFIER
text field allows user to enter a single code for the channel being
defined (maximum 15 characters). No editing allowed;
The I
NPUT
scroll box allows user to define the input to which each digital channel is
connected. No editing allowed;
The P
OLARITY
scroll box allows user to select the input logic level (normal or inverted);
D
EBOUNCING TIME
: the RPV311 will only start a record once the binary activation time
has exceeded the debouncing time parameter.
Once the digital channel is created, it shows in the configuration interface menu.
When selecting the digital channel, a screen shows the characteristics of the digital
channel selected, as shown in
Figure 25 . It is possible to edit the polarity and the
debounce time.
Figure 25: Adding and editing digital channels