GE D90 Plus, Communications Manual

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198 D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – COMMUNICATIONS GUIDE
DNP DEVICE PROFILE CHAPTER 3: DNP COMMUNICATION
– Analog input changes (object 32)
– Analog deadbands (object 34)
– Time and date (object 50)
– Time delay fine (object 52)
– Class 0, 1, 2, and 3 data (object 60)
– File transfer (object 70)
– Internal indications (object 80)
• Maximum data link frame size (octets):
–
Transmitted — 292
– Received — 292
• Maximum application fragment size (octets):
–
Transmitted — Configurable up to 2048
– Received — 2048
• Maximum data link re-tries — None
• Maximum application layer re-tries — None
• Requires data link layer confirmation — Never
• Requires application layer confirmation — When reporting event data, when sending
multi-fragment responses
• Timeouts while waiting for:
–
Data link confirm — None
– Complete application fragment — None
– Application confirm — Fixed at 10 seconds
– Complete application response — None
• Others:
–
Transmission delay — No intentional delay
– Need time interval — Configurable (default is 24 hours)
– Select/operate arm timeout — 10 seconds
– Binary input change scanning period — 16 times per power system cycle
– Analog input change scanning period — 500 ms
– Counter change scanning period — 500 ms
– Frozen counter event scanning period — 500 ms
– Unsolicited response notification delay —100 ms
– Unsolicited response retry delay — Configurable from 0 to 60 seconds
• Sends/executes control operations:
–
Write binary outputs — Never
– Select/operate — Always
– Direct operate — Always
– Direct operate – no acknowledge — Always
– Count > 1 — Never
– Pulse on — Sometimes
– Pulse off — Sometimes
– Latch on — Sometimes
– Latch off — Sometimes
– Queue — Never
– Clear queue — Never