Eaton Power Xpert PXM 4000, User And Installation Manual

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Page 176
IM02601004E
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11 Troubleshooting & Maintenance
Symptom Probable Cause Possible Solution
Slave devices on the master
side of the open circuit con-
tinue to communicate; how-
ever, the slaves on the far
side do not communicate.
One or both conductors in the
RS-485 bus are broken.
Open Circuit, check RS-485
connection.
TXD LED does not flash Incorrect hardware configura -
tion.
Hardware failure.
Reconfigure hardware.
Repair or replace hardware.
TXD LED flashes, RXD LED
doesn’t.
There’s a problem in the com-
munications channel connect-
ing the PC to the LED.
Trace the signal from the com-
munications channel to the
meter. Determine where the
signal is being interrupted and
correct the problem.
Data rate or frame mismatch.
Frequency variation is
higher than expected.
VR terminal is floating. Wire VR terminal to earth/
ground reference.
Default “admin” and “X”
UserID/Password sets do
not work.
UserID/Password forgotten. Remove the tamper seal-
able security cover from the
PXPS-1 or PXPS-4 card.
Move the Mode 1 and Mode
2 switches to the OFF posi-
tion. Cycle power to the meter.
Login as “ADMIN” with the
“ADMIN” password within 15
minutes. Setup new adminis-
trator-level UserID/Password.
Return to secure mode with
the Mode 1 or Mode 2 switch
in the ON position. Reinstall
the tamper sealable security
cover. Reboot the meter.
Cannot connect over the
LAN/WAN Ethernet.
Duplicate IP Address. Network requires a Domain
name
PC arp table contains an old
MAC Address for the given IP
Use DHCP to automatically
assign a unique IP address.
Once a Domain name is ac-
quired, turn off the automatic
setting and enter the Domain
Name setting.
Clear the PC’s arp table (e.g.,
arp-d
on the Windows com-
mand prompt).