TECO speecon 7200ma - Troubleshooting Guide; Error Causes and Corrective Actions

106
Error Causes Action to Be Taken
• Power capacity is too small.
• Voltage drop due to wiring resistance.
•
A motor of lar
g
e ca
p
acit
y
connected to the same
p
ower
system has been started.
• Defective electromagnetic contractor.
• Check the source voltage and wiring.
• Check the power capacity and power system.
• 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.
• Extend the accel. time.
• Check the load wiring.
• Motor dielectric strength is insufficient.
• Load wiring is not proper.
•
Check the motor wirin
g
im
p
edance and the load
wiring.
• Insufficient deceleration time.
• High input voltage compared to motor rated voltage.
• Extend the accel. time.
• Use a braking resistor.
• Defective cooling fan.
• Ambient temperature rise
• Clogged filter.
•
Check for the fan, filter and the ambient
temperature.
•
Overload, low speed operation or extended accel. time.
• Improper V-f characteristic setting
• Measure the temperature rise of the motor.
• Decrease the output load.
• Set proper V/f characteristic.
• Improper rated current (Cn-09) setting
• Set proper V/f characteristic.
• Set proper rated current (Cn-09)
•
If inverter is reset re
p
etitivel
y
before fault
removed, the inverter may be damaged.
• Machine errors or overload
• Check the use of the machine.
• Set a higher protection level (Cn-32).
• Fault input of external signal
e
,
g
,
h
,
i
and
j
. • Identify the fault signal using Un-11.
• Disturbance of external noise
• Excessive impact or vibration
• Reset NVRAM by running Sn-03.
•
Re
p
lace the control board if the fault can’t be
cleared.
•
Im
p
ro
p
er settin
g
of ASR
p
arameter or over-s
p
eed
protection level.
• Check the parameters of ASR and the
protection level.
• The PG wiring is not properly connected or open-
circuit.
• Check the PG wiring.
•
Im
p
ro
p
er settin
g
of ASR
p
arameter or s
p
eed
deviation level.
•
Check
p
arameters of ASR and s
p
eed deviation
level.
•External noise
•Excessive vibration or impact Communication wire
•Not properly contacted
•
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.