10.29
Date Code 20080213 Instruction Manual SEL-351A Relay
Serial Port Communications and Commands
Command Explanations
To view a status report, enter the command:
=>STA n <Enter>
where n is an optional parameter to specify the number of times (1–32767) to
repeat the status display. If n is not specified, the status report is displayed
once. The output of an SEL-351A is shown:
=>STA <Enter>
FEEDER 1 Date: 08/10/01 Time: 12:21:48.226
STATION A
FID=SEL-351A-Rxxx-V0-Z001001-Dxxxxxxxx CID=xxxx
SELF TESTS
W=Warn F=Fail
NOTE: Voltage VS is not available in
the SEL-351A-1.
IA IB IC IN VA VB VC VS MOF
OS -5 -19 -9 -16 3 9 -6 15 3
+5V_PS +5V_REG -5V_REG +12V_PS -12V_PS +15V_PS -15V_PS
PS 4.92 5.06 -4.95 12.03 -12.07 14.92 -14.82
TEMP RAM ROM A/D CR_RAM EEPROM IO_BRD
26.8 OK OK OK OK OK OK
Relay Enabled
STA Command Row and Column Definitions
The relay latches all self-test warnings and failures in order to capture
transient out-of-tolerance conditions. To reset the self-test statuses, use the
STA C command from Access Level 2:
=>>STA C <Enter>
STA Command Response Definition
FID
FID
is the firmware identifier string.
It identifies the firmware revision.
CID
CID
is the firmware checksum identifier.
OS
OS
= Offset; displays measured dc offset voltages in
millivolts for the current and voltage channels.
The MOF (master) status is the dc offset in the A/D
circuit when a grounded input is selected.
PS
PS
= Power Supply; displays power supply voltages in
Vdc for the power supply outputs.
TEMP
Displays the internal relay temperature
in degrees Celsius.
RAM, ROM, CR_RAM
(critical RAM), and
EEPROM
These tests verify the relay memory components.
The columns display
OK if memory is functioning
properly; the columns display
FAIL if the memory
area has failed.
A/D
Analog to Digital convert status.
IO_BRD
Extra I/O board status
(even though the SEL-351A does not support
additional I/O boards, a self-test is performed).
W (Warning)
or F (Failure)
Is appended to the values
to indicate an out-of-tolerance condition.
Courtesy of NationalSwitchgear.com
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