If The Motor Overheats; The Load Is Too Large; The Ambient Temperature Is Too High; Auto-Tuning Has Not Been Performed For Vector Control - YASKAWA F7 User Manual

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If the Motor Overheats

The following causes are possible:

The load is too large.

If the motor load is too large and the torque exceeds the motor's rated torque, the motor may overheat. Reduce the load amount
by either reducing the load or increasing the acceleration/deceleration times. Also consider increasing the motor size.

The ambient temperature is too high.

The motor rating is determined by a particular ambient operating temperature range. The motor will overheat if it is run
continuously at the rated torque in an environment where the maximum ambient operating temperature rating is exceeded.
Lower the motor's ambient temperature to within its acceptable range.

Auto-Tuning has not been performed for Vector Control

Vector Control may not perform optimally if Auto-Tuning has not been performed. Therefore, perform Auto-Tuning.
Alternatively, change the Control Method Selection (A1-02) to V/F Control (0 or 1).
If Peripheral Devices Like PLCs or Others are Influenced by Starting or
Running Drive
The following solutions are possible:
1. Change the Drive's Carrier Frequency Selection (C6-02) to lower the carrier frequency. This will help to reduce the amount
of transistor switching noise.
2. Install an Input Noise Filter at the Drive's input power terminals.
3. Install an Output Noise Filter at the Drive's motor terminals.
4. Use conduit. Electrical noise can be shielded by metal, so run the Drive's power leads in a conduit or shielded cable.
5. Ground the Drive and motor.
6. Separate main circuit wiring from control wiring.
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