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SV800/SV800A User Manual 8 Fault and maintenance
207
Speed sensor parameter setting or wiring
improper
Modify speed sensor parameters (
b1-07, b2-07
) or adjust
wiring
Motor nameplate parameters not set
properly
Modify the motor nameplate parameters (
b1
,
b2
)
LCD keyboard
display
LED keyboard
display
Fault Name
Communication
code
oL2
oL2
Motor overload
7
Possible causes
Countermeasures
Load too heavy
Decrease the load
Improper selection of inverter or motor
Reduce the load or reselect the inverter and motor
Improper setting of motor overload and
over-torque protection parameters
Reset motor overload and over-torque protection parameters
(
P0-03~P0-06
)
Motor stall (V/F control)
Adjust the torque limit (
d4-06, d4-07
)
Improper setting of torque limit value
Adjust the torque limit (
d2-01, d2-02, d2-03, d2-04
)
Speed sensor parameter setting or wiring
improper
Modify speed sensor parameters (
b1-07, b2-07
) or adjust
wiring
Motor nameplate parameters not set
properly
Modify the motor nameplate parameters (
b1
,
b2
)
LCD keyboard
display
LED keyboard
display
Fault Name
Communication
code
oH1
oH1
Inverter overheat
8
Possible causes
Countermeasures
The inverter ambient environment
temperature too high
Reduce ambient temperature or inverter de-rating use
Inverter cooling fan aging or damage
Replacement cooling fans
Temperature detection circuit fault
Seeking technical support from manufacturer
LCD keyboard
display
LED keyboard
display
Fault Name
Communication
code
oH2
oH2
Motor overheat
9
Possible causes
Countermeasures
Load too heavy
Decrease the load
Cooling fan loss or abnormal heat
dissipation medium
Replace the cooling fan or cooling medium, or replace the
motor
Motor temperature detection signal
abnormal
Make sure the temperature sensor and signal detection circuit
are correct
LCD keyboard
display
LED keyboard
display
Fault Name
Communication
code
GF
GF
Short circuit to ground
10
Possible causes
Countermeasures
Summary of Contents for SV800 Series
Page 8: ......