Nature of Fault
Probable Reason
Action to be taken
1] Serial
Communication is
not working with
Hand Held
Unit(HHU)
.
2] Serial
Communication
Not working
with Laptop
(PC).
•
Baud rate and other
communication
parameters selection is
not proper.
• Serial communication
cable connections are
not proper.
• TPF-56 may be in
MANUAL Mode or EDIT
Mode. In such a case,
Serial Communication
would not work.
•
Select proper baud
rate and other
communication
parameters.
• Check the serial cable
continuity as per the
connections given
earlier in this manual.
• Check whether the
TPF-56 is in the AUTO
Mode.
• Try using Lower Baud
Rate setting.
• Try using shorter
Cable.
Data down-
loading is not
taking place.
•Improper settings in
HHU or PC software.
•Ensure proper settings
in date/time format of
PC, and settings in the
PC S/W are correct
.
Troubleshooting procedure
… continued
Intelligent Power Factor Controller TPF-56
46 of 56
Version 1.1.5 22
nd
March, 2016
