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The warning and self-diagnosis functions do not operate fault contact outputs (except OH1
warning function) and return to the former operation status automatically when the condition is
removed. The fault display and troubleshooting are provided as shown in the table below.
FAULT CONTACT
OUTPUT
ERROR CAUSES
ACTION TO BE TAKEN
• AC Drive capacity is too small.
• Voltage drop due to wiring.
• AC Drive power voltage selection is wrong
• A motor of large capacity (11 kW or greater) connected
• Check the power capacity and power system.
to the same power system has been started.
• UV display appears when the AC Drive power is
Operation
• Rapid acceleration with generator power supply
turned off while operation signal is inputed. Remove
• Operation sequence when power is off
the power after stopping the AC Drive.
• Defective electromagnetic contactor
• (Set the third and fourth bits of Sn-04 to 01.)
• Extremely rapid accel/decel
• Motor on/off switching at the AC Drive output side
• Short-circuit or ground-fault at the AC Drive output side
Transistor error may occur. Investigate the error
Operation
• Motor of a capacity greater than the AC Drive rating has
cause, correct it, then restart.
been started
• High-speed motor or pulse motor has been started.
• Motor dielectric strength is insufficient.
Operation
• Load wiring is not proper.
Check for ground-fault in motor or load wiring.
• Over voltage
• Insufficient deceleration time
If required braking torque is excessive, extend the decel time
Operation
• Regenerative load (Motor is turned by the load.)
or use a braking resistor. (If braking resistor is already
• High input voltage compared to motor rated voltage
installed, verify that Sn-10. 2nd digit to 1.)
• Defective cooling fan.
Replace the cooling fan and clean the filter.
• Ambient temperature rise
Ambient temperature:
Operation
• Clogged filter
104 °F (40 °C) or less for enclosed type
122 °F (45 °C) or less for open chassis
Investigate the cause of overload and review the
operation pattern, V/f characteristic, and motor/AC Drive
Operation
Overload, low speed operation, or extended acceleration
capacities. (If AC Drive is repeatedly reset after an
time, improper V/f characteristic setting
overload occurs, the AC Drive may fault. Investigate
and correct the cause of overload.)
Operation
Motor current exceeds the preset value because of
Check the use of the machine. Correct the overload
machine error or overload.
cause or set a higher detection level which is within
the allowable range.
Operation
External fault condition occurred
Correct the source of the fault input.
Operation
• External noise
Check data in Sn-01 and Sn-02. Record all data, then
• Excess vibration or shock
use Sn-03 for initializing.
• CPF 02:
Control circuit fault
Cycle power. If error is persistant,
• CPF 03:
NVRAM (SRAM) fault
contact your TECO representative
• CPF 04:
NVRAM BCC Code error
• CPF 05:
AD converter fault in CPU
3-2
PA 7300
PART II: OPERATION MANUAL
Содержание PA7300 Series
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