INVT Goodrive350-19 Series Operation Manual page 84

Goodrive350-19 Series VFD for Crane
Fault code
SPI
SPO
OH1 Rectifier module overheating
OH2
EF
ItE
bCE
After determining the hook slip protection distance, you can calculate the encoder pulses specified by
P93.05 corresponding to the distance. The calculation principle is similar to that for height measuring
in section 5.1.6 Height measuring. The formula is as follows.
Zero servo tolerance pulse threshold =
In extreme cases (if the value of pulse change during zero servo determination is greater than 3 times
P93.05, P93.06 is skipped directly), the zero servo is triggered until the actual slippage is 4 times the
slip protection distance. If P93.06 is set to 0, zero servo is triggered at the hook slip protection
distance. In other cases, zero servo is triggered at one to fourfold hook slip protection distance. At this
time, the load falling speed is as follows:
Example: Zero servo slow lowering mode (P93.02 ones place=1)
Slow lowering action period in this mode = Zero servo action taking delay process (coasting to stop) +
Slow lowering (controlled run)
Fault type
Phase loss on input side
Phase loss on output side
Inverter module overheat
External fault
Current detection fault
Braking unit/resistor fault
(Hook slip protection distance) * (Encoder PPR) * (Motor drum DEC ratio) * (Pulley set suspension ratio)
Load falling speed
Fault code
STL2
STL3
OT
dIS
AdE
OtE1
OtE2
π * Drum diameter

2g * Actual hook slip
-72-
Commissioning guidelines
Fault type
Exception occurred to safe circuit
of channel 2
Exception occurred to channel 1
and channel 2
Motor overtemperature fault
VFD disabled
Analog speed reference
deviation fault
PT100 overtemperature
PT1000 overtemperature
distance