Sel 551 - Table D.9 A5 E0 Fast Operate Remote Bit Control; Table D.10 A5 E3 Fast Operate Breaker Control

D.7
Date Code 20110408 Instruction Manual SEL-551 Relay
Configuration, Fast Meter, and Fast Operate Commands
Message Definitions
A5E0 Fast Operate
Remote Bit Control
The external device sends the following message to perform a remote bit
operation:
The relay performs the specified remote bit operation if the following
conditions are true:
➤ The Operate code is valid.
➤ The Operate validation = 4 • Operate code + 1.
➤ The message checksum is valid.
➤ The FAST_OP port setting is set to Y.
➤ The relay is enabled.
Remote bit set and clear operations are latched by the relay. Remote bit pulse
operations assert the remote bit for one processing interval (1/8 cycle).
A5E3 Fast Operate
Breaker Control
The external device sends the following message to perform a fast breaker
open/close:
The relay performs the specified breaker operation if the following conditions
are true:
➤ Conditions 1–5 defined in the A5E0 message are true.
➤ The BREAKER jumper is in place on the SEL-551 main board.
➤ The TDURD setting is non-zero.
Table D.9 A5E0 Fast Operate Remote Bit Control
Data Description
A5E0 Command
06 Message length
1-byte Operate code:
00-07 clear remote bit RB1–RB8
20-27 set remote bit RB1–RB8
40-47 pulse remote bit for RB1–RB8
1-byte Operate validation: 4 • Operate code + 1
checksum 1-byte checksum of preceding bytes
Table D.10 A5E3 Fast Operate Breaker Control
Data Description
A5E3 Command
06 Message length
1-byte Operate code:
31-OPEN breaker
11-CLOSE breaker
1-byte Operate Validation: 4 • Operate code + 1
checksum 1-byte checksum of preceding bytes