TECO speecon 7200ma Instruction Manual page 110

Error Causes
• Input voltage drop
• Input voltage rise
• Overload
• Cooling fan fault. Ambient temperature rises.
• Clogged filter.
• Machine error or overload
• Insufficient Accel./Decel. Time
• Overload
• Excessive load impact occurs while operating
• Operation sequence error
• 3-wire/2-wire selection error
• External noise
• Excessive vibration or impact on Communication wire
• Not properly contacted
• Comm. between digital operator and inverter has not been
established after system starts for 5 seconds.
• Communication is established after system starts, but
transmission fault occurs for 2 seconds.
• External B.B. signal is input.
• Inverter KVA setting error.
• The value of Sn-25~Sn-28 is not in ascending order (Ex.
Sn-25= 05, Sn-28= 02, those are improper setting).
•Set speed search command of 21 and 22 simultaneously.
• The values of Cn-02~Cn-08 do not satisfy
≥ F ≥ F ≥ F
F .
max A B min
• Upper limit and lower limit setting is incorrect.
• Improper ASR parameter setting or over-torque
protection level.
• The circuit of PG is not properly connected or open-
circuit.
• Improper ASR parameter setting or over-torque
protection level.
• Bad communication during operator and inverter.
•The connector is not properly connected.
• Operator EEPROM error.
• Incorrect inverter data format
• Communication noise.
• Communication noise
• Inverter capacity and motor rating are not properly matched.
• The wiring between inverter and motor is disconnected.
• Motor load unbalance.
Action to Be Taken
• Measure the main circuit DC voltage, if the
voltage is lower allowance level, regulate the
input voltage.
• Measure the main circuit DC voltage, if the
voltage is higher than allowance level, regulate
the input voltage.
• Check for the fan, filter and the ambient
temperature.
• Check the use of the machine.
• Set a higher protection level (Cn-32).
• Increase Accel./Decel. Time.
• Check the load.
• Check the circuit of system
• Check the setting of system parameters Sn-25,
26, 27, and 28.
• 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.
• Re-plug the connector of the digital operators.
• Replace the control board.
• After external BB signal is removed, execute the
speed search of the inverter.
• Set proper KVA value. Be aware of the
difference of 220V and 440V
• Set these values by order (the value of Sn-25
must be smaller than those of Sn-26, 27, 28)
• Command 21 and 22 can not be set on two multi-
function-input contacts simultaneously.
• Change the settings.
• Change the settings.
• Check the ASR parameter and over-torque
protection level.
• Check the wiring of PG.
• Check the ASR parameter and over-torque
protection level.
• Check if the connector is not properly connected.
• Disable load function of operator.
• Replace the operator.
• Download the data to the operator again.
• Check if the connector is not properly connected.
• Check if the connector is not properly connected.
• Correct the inverter/motor capacity ratio, wiring
cable and motor load.
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