Unit displays:
“Hardware Failure”
“Register Failure”
“Multiply Failure”
“Divide Failure”
“Logic Failure”
“ A d d / S u b t r a c t
F a i l u r e ”
Unit displays:
“Internal RAM
E r r o r ”
“External RAM
E r r o r ”
“External ROM
E r r o r ”
Unit displays:
“Reverse Sequence”
Unit fails to capture
Harmonic Data
when Manual
Capture is pressed.
Unit fails to com-
municate over
IMPACC network.
Display goes blank
after several min-
utes.
Unit setpoints
unchanged upon
exiting program
mode.
Possible IQ Analyzer
hardware failure.
IQ Analyzer hardware
error.
IQ Analyzer has detect-
ed phasing difference
between programmed
setpoint and actual sys-
tem parameters.
No manual capture
event trigger has been
programmed.
Wrong or conflicting
address set on IPONI.
Blown fuse on
IQ Analyzer.
Communications
wiring error.
IPONI failure.
Display Manager
Screen Saver Option is
set to blank rather than
dim.
Unit was in
View-Only mode using
password (00000).
•Reboot Unit by
mometarily removing
power cable at connector
J2.
•Replace Unit.
•Reboot Unit.
•Replace Unit.
•Verify actual system
phasing. Capture an
event and compare
phase angles of Va, Vb,
Vc, Ia, Ib, Ic to detect
possible wiring error(s).
• Verify that IQ Analyzer
setpoint matches actual
system phasing.
• Verify IQ Analyzer con-
nections.
• Enter Program Mode
and set up an Event
Trigger for Manual
Capture.
• Check that IPONI has a
unique address on the
system and that soft-
ware is addressing
proper unit.
• Check input/output fuse
adjacent to IQ Analyzer
communication connec-
tor. Replace if
necessary.
1
• Verify wiring is in con-
formance with IMPACC
wiring rules.
• Press any pushbutton to
activate display.
• Program longer timeout
in Meter Menu Return
Time in Display
Manger.
• Re-enter program
setpoints using proper
password. Customer
established or factory
default (44444 or 10000).
1
I/O Fuse: Littlefuse Plug-in Microfuse, Catalog #273.250, 0.25A, 125V or
equivalent.
Troubleshooting
(USER’S MANUAL SECTIONS 7)
19
ymptom Probable Cause Possible Solutions(s)
Operator Panel
icator LED’s
off.
ne or more volt-
ge phases read
ncorrectly.
ower parameters
Watt, var, VA,
ower Factor)
ead incorrectly.
ncorrect readings
n one or more
urrents.
Line voltage level is
d e f i c i e n t .
Separate source con-
trol power is deficient.
ac line connections (or
optional external PTs)
are not properly
w i r e d .
Blown or loose fuse(s).
Blown or loose
fuse(s).
Incorrect voltage
settings.
Phasing for voltage
and current is mis-
matched.
CT polarity is
reversed.
Incorrect current
transformer ratio set-
ting.
• Locate cause of defi-
ciency in ac line.
• Locate deficiency in
the ac control power
l i n e .
• Verify that the ac line
(and/or PTs) are wired
p r o p e r l y .
• Verify line voltage
with multimeter.
Check power module
fuse(s) on affected
phase(s). These are
located just above volt-
age inputs (behind the
cover of power mod-
ule). Reseat or replace
fuse(s) as necessary.
1
•Verify line voltage with
multimeter. Check
power module fuse(s)
on affected phase(s)
located just above the
voltage inputs behind
the cover of power
module. Reseat or
replace fuse(s) as
n e c e s s a r y .
1
• Verify correct settings
programmed in the IQ
Analyzer for system
type,L-L voltage and
PT rating.
• Capture an event and
compare phase angles
of Va, Vb, Vc, Ia, Ib, Ic
to detect possible
wiring error(s).
• Verify connections per
wiring diagrams.
• Reverse CT leads.
Verify proper wiring
and grounding.
• Verify incoming cur-
rent using a separate
a m m e t e r .
• Verify proper CT ratio
s e t t i n g s .
• Check CT wiring and
g r o u n d i n g .
Power Module Fuse: Buss KTK-R-3/4 or equivalent (3/4 amp).
oubleshooting
oubleshooting
(USER’S MANUAL SECTIONS 7)
18
