TECO E710-403-H3SF - Page 68

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When the inverter detects a warning, the
keypad displays a warning code (flash).
Note: The fault contact output does not
energize on a warning and the inverter
continues operation. When the warning is no
longer active the keypad will return to its
original state.
When the inverter detected a programming
error (for example two parameters contradict
each other of are set to an invalid setting), the
keypad displays a self-diagnostics code.
Note: The fault contact output does not
energize on a self-diagnostics error. While a
self-diagnostics code is active the inverter
does not accept a run command until the
programming error is corrected.
Note: When a warning or self- diagnostic error
is active the warning or error code will flash on
the keypad. When the RESET key is pressed,
the warning message (flash) disappears and
returns after 5 sec. If the warning or self-
diagnostic error still exists.
Refer to Table 4.2 for and overview, cause and
corrective action for inverter warnings and self-
diagnostic errors.
Table 4.2 warning / self-diagnosis and corrective
actions
LED display Corrective action
OV
(flash)
Over voltage
• Increase deceleration
time
• Reduce input voltage to
comply with the input
voltage requirements or
install an AC line
reactor to lower the
input voltage.
• Remove the power
factor correction
capacitor.
• Use dynamic braking
unit.
• Replace braking
transistor or resistor.
• Adjust speed search
parameters.
UV
(flash)
under voltage
• Check the input voltage.
• Check input wiring.
• Increase acceleration
LED display Corrective action
time.
• Check power source
• Replace pre-charge
contactor
• Replace control board
or complete inverter.
OH1
Heatsink
overheat
• Install fan or AC to cool
surroundings.
• Replace cooling fan.
• Reduce carrier
frequency.
• Reduce load / Measure
output current
OH2
(flash)
Inverter over
heating
warning
• Multi-function input
function set incorrectly.
• Check wiring
OT
(flash)
over torque
detection
• Check over torque
detection parameters
(08-15 / 08-16).
• Check and reduce
motor load, check and
operation duty cycle.
UT
(flash)
under torque
detection
• Check under torque
detection parameters
(08-19 / 08-20).
• Check load /
application.
bb1
(flash)
External
baseblock
• Multi-function input
function set incorrectly.
• Check wiring
bb2
(flash)
External
baseblock
bb3
(flash)
External
baseblock
bb4