Date Code 20010719 701 Motor Protection Relay
SEL-2020/2030 & SEL-701PC Compatibility Features
Fast Binary Message Definitions
D.17
A5E3 Fast Operate Breaker/Contactor Control
Send the A5E3 command to stop or start the protected motor. Motor starting is
only effective if a relay output contact is properly connected to close the motor
contactor or breaker.
The A5E3 command should contain the items listed in Table D.10
Table D.10 A5E 3 Command
ID Message
In response to the ID command, the SEL-701 Relay sends the firmware ID, boot
code ID, relay RID setting, the Modbus device code, part number, and configuration as
described below.
<STX>"FID STRING ENCLOSED IN QUOTES","yyyy"<CR>
"BOOT CODE ID STRING ENCLOSED IN QUOTES","yyyy"<CR>
"RID SETTING ENCLOSED IN QUOTES","yyyy"<CR>
“DEVICE CODE ENCLOED IN QUOTES”, "yyyy"<CR>
"RELAY PART NUMBER ENCLOSED IN QUOTES","yyyy"<CR>
"RELAY CONFIGURATION NUMBER ENCLOSED IN QUOTES","yyyy"<CR>
<ETX>
where:
<STX> is the STX character (02).
<ETX> is the ETX character (03).
"yyyy" is the 4-byte ASCII hex representation of the checksum
for each line.
The ID message is available from Access Level 1 and higher.
Table D.10 A5E3 Command
Data Description
A5E3 Command
06 Message length in bytes
1-byte Operate Code
31 Stop Motor
11 Start Motor
1-byte Command validation
(4 • Operate Code) + 1
1-byte 1-byte checksum of all preceding bytes
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