6
Instruction Leaflet
IL157002EN
Effective July 2019
Eaton BLR-ACX
Quick commissioning guide
EATON
www.eaton.com
Troubleshooting
CAUTION
WHILE ATTEMPTING ANY TROUBLESHOOTING STEPS THAT REQUIRE
ACCESS INTO THE CAPACITOR BANK, ALWAYS FOLLOW ALL SAFETY
PRECAUTIONS AND REGULATIONS FOR WORKING ON ELECTRICAL
SYSTEMS. ALWAYS WEAR PROPER PPE AND FOLLOW APPROPRIATE
LOCK OUT AND TAG OUT PROCEDURES.
Automatic control mode
The controller should display status “Auto,“which indicates that the
controller is working in automatic mode . This is the desired mode of
operation . If “Auto” is not displayed, then the power factor control is
not working . Reasons for this are:
•
Manual mode is active
•
Control mode has been switched off
•
Temperature is too high (if temperature input is provided)
•
Current from the CT is less than 15 mA
•
Voltage is out of range
•
Harmonic level of voltage is too high
Alarms and description
The controller has an extended alarm system . When an alarm is
active, the sign ALARM in the display blinks and an error code is
shown on the screen . Possible error codes are shown in the
table below .
Alarm
Description
U
ALARM
Measuring voltage is out of tolerance.
1 Lo
ALARM
Measuring current is less than 15 mA
(please check CT signal and verify that CT
shorting pin has been removed).
1 Hi
ALARM
Measuring current is too high.
PFC
ALARM
Target cannot be reached.
HAr
ALARM
THD U alarm (harmonic alarm).
StEP
ALARM
FltY
ALARM
One or more steps are defective. The defective
steps are blinking together with the ALARM sign.
SPL
ALARM
/11
ALARM
One or more steps have less than 70% of
original size. Number of step and alarm text
are blinking alternately.
thi
ALARM
Over temperature alarm. Threshold level 2
exceeded. The steps will be switched-off
step by step.
OPh
ALARM
Maximum allowed operating hours are reached.
OPC
ALARM
/11
ALARM
Maximum allowed number of switch cycles of one
or more steps is reached.
Ai/Abrt
Abort of automatic initialization due to unsuitable
load conditions.
Current and voltage monitoring
The controller is equipped with current and voltage monitoring to
ensure it is within its operating parameters . The controller will show
“I LO” alarm if there is no measured current or the magnitude
sensed is less than 15 mA . If the current is greater than 6 A, the
controller will show “I Hi alarm” .
If either of these alarms are displayed, check the CT current path,
verifying that the correct CT ratio is selected, the CT is in the correct
position, and the current input and shorting jumpers at the terminal
block are removed .
The allowed range of voltage depends on nominal voltage . When
nominal voltage is out of range, “U Alarm” is shown . If this alarm
is seen, then the setting of nominal voltage has to be adjusted .
Nominal Voltage is measured and entered phase to phase .
Capacitor stage database
A step fault (“STEP / FLTY”) or step low (“SPL”) alarm indicates
problems with the sensed capacitor size . To check the capacitor
stages, switch the controller into the INFO mode by pressing the
▼
(down) key . In the INFO submenu, by pressing the
▲
(up) or
▼
(down) key, the steps can be chosen and once the steps are
indicated in the display, pressing the
▼
( ) (right/enter) key displays
the information for the selected steps .
CC C INFO
50 kvar
a
▼
INFO
99 .9%
a
▼
OC INFO
10 .12 k
a
▼
i INFO
AUTO
a
actual
power
of step
percentage
actual to
nominal
power
number of
operations
step
type
It’s possible to have capacitive steps as well as inductive steps .
Ensure the steps show capacitive (“C”) kvar) .
High temperature alarm
1 . Replace dust filters (Catalog Number AUTOVAR6FX8) .
2 . Verify proper operation of fans .
3 . Verify that measured ambient temperature does not exceed
40 °C (104 °F) .
4 . Check for external sources of heat such as direct sunlight .
PFC alarm
Possible reasons could be:
1 . Insufficient capacitance available or target PF set too high .
2 . Capacitor stages deteriorated .
3 . Capacitor stages sensed or set incorrectly (both in terms of
type (inductive or capacitive) and value (100 kvar instead
of 50 kvar) .
PF value incorrect, decreases as steps are added or
shows X.XX“c”
1 . CT polarity is incorrect .
2 . CT leads are swapped .
3 . CT is not mounted on A phase .
Adjust the Phase-Offset menu parameter according to the
following chart .
CT installed phase (with respect
to incoming AutoVAR bus)
CT polarity
Controller
phase-offset
A
Straight
90
A
Reverse
270
B
Straight
330
B
Reverse
150
C
Straight
210
C
Reverse
30
