TEC TECDrive20-EU Series - Page 113

TECDrive20-EU Series Inverter Fault tracking
-108-
Fault
code
Fault type
Possible cause
Solutions
during
acceleration
abnormal;
 There is large energy
feedback;
 No brake components;
 Braking energy is not open.
 Check if the load
deceleration time is too short
or the inverter starts during
the rotation of the motor or it
is necessary to install
dynamic braking
components;
 Install the brake
components;
 Check the setting of related
function codes.
OV2
[8] Overvoltage
during
deceleration
OV3
[9] Overvoltage
during constant
speed running
UV
[10] Bus
undervoltage
 The voltage of the power
supply is too low.
 Check the input power of the
supply line.
OL1
[11] Motor
overload
 The voltage of the power
supply is too low;
 The motor setting rated
current is incorrect;
 The motor stall or load
transients is too strong.
 Check grid voltage;
 Reset the rated current of
the motor;
 Check the load and adjust
the torque lift.
OL2
[12] Inverter
overload
 Acceleration is too fast;
 Restart the rotating motor
 Grid voltage is too low;
 The load is too heavy;
 The rated power is much
larger than the power
actually needed.
 Increase acceleration time;
 Avoid restarting after
stopping;
 Check the grid voltage;
 Select a inverter with larger
power;
 Select a proper motor.
SPI
[13] Phase loss
on input side
 Phase loss or fluctuation of
input R, S, T.
 Check input power
 Check installation wiring.
SPO
[14] Phase loss
on output side
 U, V, W phase loss output
(or serious asymmetrical
three phase of the load).
 Check the output wiring;
 Check the motor and cable.
OH1
[15] Rectifier
module
overheat
 Air duct is blocked or fan is
damaged;
 Ambient temperature is too
high;
 The time of overload running
is too long.
 Refer to the overcurrent
solution;
 Redistribute;
 Dredge the wind channel or
change the fan;
 Lower down the ambient
temperature;
OH2
[16] Inverter