Direct Input And Output Examples - GE D90 Plus Instruction Manual

Line distance protection system

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DIRECT INPUTS AND OUTPUTS

Direct input and output examples

Direct inputs and outputs to extend input/output capabilities

configured to drive an output contact, annunciator alarm, or selected communication-

based output. Latching and acknowledging conditions, if required, need to be

programmed accordingly in the annunciator settings.

Message Alarm Events

Range: Enabled, Disabled

Default: Disabled

This setting enables and disables the logging of unreturned message alarm events in the

sequence of events recorder.

The following application examples illustrate direct input and output configuration.

Consider an application that requires additional contact inputs or outputs or lines of

programmable logic that exceed the capabilities of a single UR

problem is solved by adding an extra UR

output and programmable logic requirements. The two IEDs are connected via single-

channel digital communication cards as shown.

Figure 124: Input and output extension via direct inputs and outputs

The following settings are applied to implement this application. For both IEDs, set the

inter-relay baud rate for channel 1 to 128 kbps in the Settings > Communications > Inter-

-series IED 1:

Figure 125: Inter-relay communications settings for IED 1

-series IED to satisfy the additional input and

LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL

CHAPTER 6: COMMUNICATIONS

-series device. The