User's Manual

Table Of Contents

SEL-3031 Instruction Manual Date Code 20091009

Job Done Examples

Using an SEL Information Processor to Collect Relay Status and Measurements

3.6

Initial Checkout

The easiest way to verify that the relays are communicating is to use the TARget

command, as shown below.

=>TAR ROKA <Enter>

LBOKB CBADB RBADB ROKB LBOKA CBADA RBADA ROKA

00000001

Figure 3.6 TAR ROKA Command From an SEL-351

The results shown here is from an SEL-351 Relay. ROKA is asserted, meaning that the

two relays have established M

IRRORED BITS communication. For longer-term channel

tests, use the COM report command available in the relay and suggestions described in

Monitoring Radio Performance on page 5.1.

Using an SEL Information Processor to

Collect Relay Status and Measurements

SEL information processors and computing platforms easily collect relay status and

measurement information. SEL information processors include the SEL-3530 Real-

Time Automation Processor, SEL-2032, SEL-2030, and SEL-2020 Communications

Processors, and ruggedized SEL computers configured as intelligent servers or

gateways. An SEL information processor can be used as data collection point, port

switch, and control operations all through one serial port. The SEL-3031 serial

interface allows you to obtain all of this relay information from remote IEDs using the

wireless connection. The example below will show you how to set the radio, relays,

and communications processors to allow the Fast Messaging protocol to operate over a

wireless connection.

Figure 3.7 SEL-3031 Linking Information Processors to Relays

SEL-3 51

SEL-3031

SEL-2032

SEL-451