Sel SEL-787 - Page 309

7.21
Date Code 20150130 Instruction Manual SEL-787 Relay
Communications
SEL ASCII Protocol and Commands
To start the test, enter ANA AO301 R 9.0 at the Access Level 2 prompt:
CEV Command
The SEL-787 provides Compressed ASCII event reports to facilitate event
report storage and display. SEL communications processors and
ACSELERATOR Analytic Assistant SEL-5601 Software take advantage of the
Compressed ASCII format. Use the CHIS command to display Compressed
ASCII event history information. Use the CSUM command to display
Compressed ASCII event summary information. Use the CEVENT (CEV)
command to display Compressed ASCII event reports. See Table C.2 for
further information. Compressed ASCII Event Reports contain all of the
Relay Word bits. CEV R command gives the raw Compressed ASCII event
report.
CLOSE n Command (Close Breaker n, where n = 1 or 2)
The CLO n (CLOSE n) command asserts Relay Word bit CCn for 1/4 cycle
when it is executed. Relay Word bit CCn can then be programmed into the
CLn SEL
OGIC control equation to assert the CLOSE n Relay Word bit, which
in turn asserts an output contact (e.g., OUT102 = CLOSE1) to close circuit
breaker n (see Table 4.26 and Figure 4.51 for factory-default settings CL1 and
CL2 and close logic).
To issue the CLO 1 command, enter the following.
Typing N <Enter> after the above prompt will abort the command.
The CLO n commands are supervised by the main board breaker control
jumper (see Table 2.12). If the breaker control jumper is not in place (breaker
control jumper = OFF), the relay does not execute the CLO n command and
responds with the following.
=>>ANA AO301 R 9.0 <Enter>
Ramping Analog Output at 1.78 mA/min; full scale in 9.0 minutes.
Press any key to end test
Output
20.00 mA 4.00 mA–
9.0 min
---------------------------------------------------
1.78 mA/min==
=>>CLO 1 <Enter>
Close Breaker1 (Y,N)? Y <Enter>
=>>
=>>CLO 1 <Enter>
Command Aborted: No Breaker Jumper
=>>