TECO speecon 7200ma Instruction Manual page 108

Error Causes
• Power capacity is too small.
• Voltage drop due to wiring resistance.
• A motor of large capacity connected to the same power
system has been started.
• Defective electromagnetic contractor.
• Extremely rapid accel.
• Short-circuit or ground- fault at the inverter output side.
• Motor of a capacity greater than the inverter rating
has been started.
• High-speed motor and pulse motor has been started.
• Motor dielectric strength is insufficient.
• Load wiring is not proper.
• Insufficient deceleration time.
• High input voltage compared to motor rated voltage.
• Defective cooling fan.
• Ambient temperature rise
• Clogged filter.
• Overload, low speed operation or extended accel. time.
• Improper V-f characteristic setting
• Improper rated current (Cn-09) setting
• Machine errors or overload
• Fault input of external signal
• Disturbance of external noise
• Excessive impact or vibration
• Improper setting of ASR parameter or over-speed
protection level.
• The PG wiring is not properly connected or open-
circuit.
• Improper setting of ASR parameter or speed
deviation level.
•External noise
•Excessive vibration or impact Communication wire
•Not properly contacted
and .
, , ,
106
Action to Be Taken
• Check the source voltage and wiring.
• Check the power capacity and power system.
• Extend the accel. time.
• Check the load wiring.
• Check the motor wiring impedance and the load
wiring.
• Extend the accel. time.
• Use a braking resistor.
• Check for the fan, filter and the ambient
temperature.
• Measure the temperature rise of the motor.
• Decrease the output load.
• Set proper V/f characteristic.
• Set proper V/f characteristic.
• Set proper rated current (Cn-09)
• If inverter is reset repetitively before fault
removed, the inverter may be damaged.
• Check the use of the machine.
• Set a higher protection level (Cn-32).
• Identify the fault signal using Un-11.
• Reset NVRAM by running Sn-03.
• Replace the control board if the fault can't be
cleared.
• Check the parameters of ASR and the
protection level.
• Check the PG wiring.
• Check parameters of ASR and speed deviation
level.
•Check the parameter setting, including Sn-01, Sn-02.
•Check if the comm. wire is not properly contacted.
•Restart, if fault remains, please contact to us.