Direct Input And Output Statistics - GE D90 Plus Instruction Manual

CHAPTER 6: COMMUNICATIONS

Direct input and output statistics

PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 143: Direct input and output settings for IED 3
In this configuration the following delivery times are expected (at 128 kbps) when both
rings are healthy.
Table 11: Expected delivery times for healthy rings
Path
IED 1 to IED 2
IED 1 to IED 3
IED 2 to IED 3
This configuration can be applied to both permissive and blocking schemes.
Select the Actual Values > Communications > Direct IO Statistics menu to open the
direct inputs and outputs statistics window.
Figure 144: Direct inputs and outputs statistics
The following actual values are available for each channel and are applicable to all direct
inputs and direct outputs.
Message Return Time
Range: 0 to 10000 ms in steps of 1
This actual value displays the time taken for direct output messages to return to the
sender. There are two return times (one for each channel) for dual-channel
communications modules. The value is defaulted to the maximum "10000 ms" if the
message is not received or if the ring configuration function setting is "Disabled."
DIRECT INPUTS AND OUTPUTS
Delivery time
0.2 of a power system cycle
0.2 of a power system cycle
0.2 of a power system cycle
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