CARLO GAVAZZI VariFlex3 RVFFA3400400F, Быстрый старт

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Motor Controllers AC Variable Frequency Drives
Type Variflex 3 RVFF
Specifications are subjected to change without notice.
74
LED
display
Description Cause Possible solutions
OH1
Heat sink
overheati
ng
Heat sink is
overheating:
The temperature of
the heat sink is too
high.
If heat sink
overheating fault has
occurred with three
times in five minutes,
it is required to wait
for 10 minutes before
resetting the fault.
•
Ambient temperature is too high.
•
The cooling fan has stopped.
•
Carrier frequency setting is too high.
•
Check the ambient
temperature of the inverter.
•
Check the fan or dust and dirt
in the heat sink.
•
Check the carrier frequency
setting.
OH2
(flash)
Inverter
over
heating
warning
Inverter overheat
warning:
Multi-function digital
input set to 32.
(Terminal S1 ~ S6)
Active when 03-00 ~
03-05=31.
•
Multifunction digital input overheat
warning active.
•
Multi-function input function set
incorrectly.
•
Check wiring
OT
(flash)
over
torque
detection
Inverter output
torque is higher than
08-15 (over torque
detection level) for
the time specified in
08-16. Parameter 08-
14 = 0 to activate.
•
Load too heavy.
•
Check over torque detection
parameters (08-15 / 08-16).
•
Check and reduce motor load,
check and operation duty
cycle.
UT
(flash)
under
torque
detection
Inverter output
torque is lower than
08-19 (under torque
detection level) for
the time specified in
08-20. Parameter 08-
18 = 0 to activate.
•
Sudden drop in load.
•
Belt break.
•
Check under torque detection
parameters (08-19 / 08-20).
•
Check load / application.
bb1
(flash)
External
base
block
External base block
(Terminal S1)
•
Multifunction digital input external
base block active.
•
Multi-function input function set
incorrectly.
•
Check wiring
bb2
(flash)
External
base
block
External base block
(Terminal S2)