© 2006 Schneider Electric All Rights Reserved
63230-500-224A1
PowerLogic
®
Series 800 Power Meter
6/2006
Chapter 8—Maintenance and Troubleshooting
EN–59
ENGLISH
Heartbeat LED
The heartbeat LED helps to troubleshoot the power meter. The LED
works as follows:
•
Normal operation
— the LED flashes at a steady rate during
normal operation.
•
Communications
— the LED flash rate changes as the
communications port transmits and receives data. If the LED flash
rate does not change when data is sent from the host computer,
the power meter is not receiving requests from the host computer.
•
Hardware
— if the heartbeat LED remains lit and does not flash
ON and OFF, there is a hardware problem. Do a hard reset of the
power meter (turn OFF power to the power meter, then restore
power to the power meter). If the heartbeat LED remains lit,
contact your local sales representative.
•
Control power and display
— if the heartbeat LED flashes, but
the display is blank, the display is not functioning properly. If the
display is blank and the LED is not lit, verify that control power is
connected to the power meter.
Table 8 – 1: Troubleshooting
Potential Problem
Possible Cause
Possible Solution
The maintenance icon is
illuminated on the power
meter display.
When the maintenance icon is
illuminated, it indicates a potential
hardware or firmware problem in the
power meter.
When the maintenance icon is illuminated,
go to DIAGNOSTICS > MAINTENANCE.
Error messages display to indicate the
reason the icon is illuminated. Note these
error messages and call Technical Support
or contact your local sales representative
for assistance.
The display is blank after
applying control power to
the power meter.
The power meter may not be
receiving the necessary power.
•
Verify that the power meter line (L) and
neutral (N) terminals (terminals 25 and
27) are receiving the necessary power.
•
Verify that the heartbeat LED is
blinking.
•
Check the fuse.
Summary of Contents for PM820
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