Date Code 20010719 701 Motor Protection Relay
SEL-2020/2030 & SEL-701PC Compatibility Features
CEVENT Command
D.27
"z" is “>” for the trigger row, “*” for the fault current row and
empty for all others. If the trigger row and fault current row are
the same, both characters are included (e.g., “>*”).
"HEX-ASCII Relay Word" is the hex ASCII format of the Relay
Word. The first element in the Relay Word is the most
significant bit in the first character.
If the specified event does not exist, the relay responds:
<STX>"No Data Available","0668"<CR>
<ETX>
See the DNA Message on page D.18 for definition of the “Names of elements in
the Relay Word separated by spaces” field.
A typical HEX-ASCII Relay Word is shown below:
"2000001000000000000080",”0CA0”
Each byte in the HEX-ASCII Relay Word reflects the status of 8 Relay Word bits.
The order of the labels in the “Names of elements in the relay word separated by
spaces” field matches the order of the HEX-ASCII Relay Word. In the example
above, the first two bytes in the HEX-ASCII Relay Word are “20”. In binary, this
evaluates to 00100000. Mapping the labels to the bits yields:
In this example, the STOPPED Relay Word bit is asserted (logical 1); all others
are deasserted (logical 0).
Labels STARTING RUNNING STOPPED JAMTRIP LOSSALRM LOSSTRIP 46VBA 46BVT
Bits 0 0 1 0 0 0 0 0
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