TCI HG7 User Manual
Page 38
P O W E R M O N I T O R P A C K A G E O N L Y
POWER MONITOR OPTION
HG7 I, O, & M Manual
36
FAULT
Code
Troubleshooting Procedure
F11-F13
Fault
on
initial
startup
Filter Current Low Trip
If the F11, F12 or F13 fault occurred upon initial startup (commissioning), use this
procedure. If the unit had been operating normally for some time after initial startup
(commissioning), refer to the next section.
This fault indicates the filter current is lower than normal. Fault F11 indicates low current
through fuse Fu1(a), F12 indicates low current through fuse Fu2(a) and F13 indicates low
current through fuse Fu3(a).
First check for any shipping damage. Look for loose connections, especially those
associated with the HG2 board and fuses Fu1(a), Fu2(a) and Fu3(a). Make sure that
Fu1(a), Fu2(a), and Fu3(a) are properly installed. Check for proper balanced line-to-line
voltages on L1, L2, and L3.
If there are no obvious errors in the wiring and installation of the filter go to the Setup
Procedure page 32. Verify that all the parameters are correct for this installation. At this
point leave the parameter 11A set to (0), exit the setup mode, and allow the filter to
reenergize.
If the F11 fault still appears, return to the Setup Procedure and set parameter 11A to (1).
Upon exiting this time, the filter will re-energize in the Calibration Mode. Caution! When
in the Calibration Mode, the HG2 board will not de-energize the filter under fault
conditions. Follow the Calibration Procedure on page 39.
The factory default setting for the Filter Current Low Trip (parameter 7A) is 80% of the
filter's nominal fundamental current rating as determined by the filter’s kVar, frequency,
and voltage ratings (parameters 3A, 4a & 8A). If the trip level is set below 80%, the HG2
may not trip when a partial loss of capacitance has occurred. If the trip level is set above
80%, the HG2 may trip unnecessarily. It is recommended that the setting not be
changed without consulting the technical support department at the factory.