Terminal S1; Terminal S2; Terminal S3 - gefran VDI100 Series Instruction Manual

LED display
OV DC bus voltage exceeds the OV
(flash) detection level:
Over voltage 410Vdc: 230V class
820Vdc: 400V class
(for 440V class, if input voltage
01-14 is set lower than 400V,
the OV detection value will is
decreased to 700Vdc)
UV DC bus voltage is lower than
(flash) the UV detection level or the
under voltage pre-charge contactor is not active
while the inverter is running.
190Vdc: 230V class;
380Vdc: 400V class
(the detection value can be
adjusted by 07-13)
OH2
(flash)
Inverter over heating Inverter overheat warning Mul-
warning ti-function digital input set to 31.
(Terminal S1 ~ S8) Active when
03-00 ~ 03-07 = 31).
OT
(flash)
Inverter output torque is higher
over torque detection
than 08-15 (over torque detection
level) for the time specified in
08-16. Parameter 08-14 = 0 to
activate.
UT
(flash)
Inverter output torque is lower
under torque
than 08-19 (under torque detec-
detection
tion level) for the time specified
in 08-20. Parameter 08-18 = 0 to
activate.
bb1
(flash)
External baseblock
External base block

(Terminal S1)

bb2
(flash)
External baseblock
External base block

(Terminal S2)

bb3
(flash)
External baseblock
External base block

(Terminal S3)

334
Table 10.3.1 warning / self-diagnosis and corrective actions
Description
•Deceleration time set too short, resulting in
regenerative energy flowing back from motor to
the inverter.
•The inverter input voltage is too high.
•Use of power factor correction capacitors.
•Excessive braking load.
•Braking transistor or resistor defective.
•Speed search parameters set incorrectly.
•The input voltage is too low.
•Input phase loss.
•Acceleration time set too short.
•Input voltage fluctuation.
•Pre-charge contactor damaged.
•DC bus voltage feedback signal value not
incorrect.
• Multifunction digital input overheat warning
active.
•Load too heavy.
•Sudden drop in load.
•Belt break.
•Multifunction digital input external baseblock
active
Possible causes Corrective action
•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.
•Check the input voltage.
•Check input wiring.
•Increase acceleration time.
•Check power source
•Replace pre-charge contactor
•Replace control board or complete inverter
•Multi-function input function set incorrectly.
•Check wiring
•Check over torque detection parameters (08-
15 / 08-16).
•Check and reduce motor load, check and
operation duty cycle.
•Check under torque detection parameters
(08-19 / 08-20).
•Check load / application.
•Multi-function input function set incorrectly.
•Check wiring
VDI100 • Instruction manual