10.2
SEL-2032
Communications Processor
Instruction Manual
Date Code 20120126
Testing and Troubleshooting
Self-Tests
Self-Tests
The SEL-2032 continually runs the following self-tests. Any test failure
causes an alarm to be latched and the status report to be issued on Port F.
RAM.
The SEL-2032 continually performs read-write test of RAM, both
local and shared.
Code Flash.
The SEL-2032 continually computes and checks a checksum
of ROM.
EEPROM/Archive Flash.
The SEL-2032 continually validates data blocks
using checksums.
Power Supply.
Threshold comparators (+/– 15 V) are continually checked
for tolerance.
Troubleshooting
Power
System Problems
describes typical SEL-2032 power system problems and solutions.
Communications
Problems
Refer to
for troubleshooting some basic communications problems.
Table 10.2
Power System Problems
Symptom
Probable Cause
Corrective Action
All front-panel LEDs
remain dark when LED
TEST button is pressed.
No power to
rear-panel power terminals.
Internal power
supply defective.
Supply power to
rear-panel power terminals.
Remove power
and contact the factory.
+5 Vdc not supplied
to pin 1 of rear-panel
communication port(s).
Jumper(s) not
installed on main board.
See
Table 10.3
Communications Problems
(Sheet 1 of 2)
Symptom
SEL-2032 does not communicate with PC.
Probable Cause
Serial cable damaged or wrong cable connected.
Corrective Action
Inspect the cabling for damage and proper connection.
Symptom
SEL-2032 does not communicate with PC.
Probable Cause
SEL-2032 baud rate default jumper installed.
Corrective Action
1.
Set the PC terminal to 2400 baud to communicate with the
SEL-2032.
2.
Using the
SET
command, set the SEL-2032 baud rate.
3.
Access the main board. Refer to
.
4.
Remove jumper
J17 A. Place the jumper on one pin of the
connector for safekeeping.
5.
Set the baud rate of the PC terminal to match the SEL-2032.
6.
Cycle SEL-2032 power and reconnect.
Содержание SEL-2032
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