Sel SEL-DTA2, Инструкция по эксплуатации

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5.3
Date Code 20020329
SEL-DTA2 Instruction Manual
Maintenance and Testing
Introduction
are at Access Level 0, the lowest of the three access levels. The
only command accepted at this level is ACCESS, which opens
communications to Access Level 1.
Step 6. Enter the command ACCESS and press <ENTER> . At the
password prompt, enter the Access Level 1 password and press
<ENTER> . The “=>” prompt appears, indicating that you have
established communications at Access Level 1.
Step 7. Press the “CLEAR” switch on the front panel. The display
turns black while the switch is asserted and shows the
following message when the switch is released.
Step 8. Press the “STATUS” switch on the front panel. The display
shows:
for up to 60 seconds while it retrieves status information from
the relay. The first two lines of acquired status data appear on
the display:
Use the “SCROLL” switches to view all lines of status data.
Holding a “SCROLL” switch in automatically repeats the
control.
If the SEL-DTA2 is unable to retrieve the information before
the 60-second timeout, the following message appears on the
display (data timeout):
This indicates a communication failure between the relay and
SEL-DTA2. Refer to Troubleshooting for suggested actions.
Step 9. Press the “METER” switch on the front paneltwice. The
display shows:
for up to 60 seconds while the SEL-DTA2 retrieves meter data
from the relay.
Since the test source has not yet been connected to the relay,
displayed data resembles the following:
The timeout response is identical to that of the “STATUS”
switch; refer to
Troubleshooting on page 5.5 if a data timeout
occurs.
SEL-DTA
RELAY ID STRING
Executing STATUS Request
Please Wait
DATE: 01/01/90 Time:01:01:32
OFFSET IP = 0 mV
PLEASE WAIT: ACCESSING RELAY
PLEASE WAIT
MET IA=1 B=2 C=0
P=0.00 Q=0.00