YASKAWA GA50U Series - Page 100

13 Troubleshooting
100 YASKAWA TOEPC71061752B GA500 Drive Installation & Primary Operation
Code Name Causes Possible Solutions
The motor has overheated. • Check the load level, acceleration/
deceleration time, and motor start/stop
frequency (cycle time).
• Decrease the load.
• Increase the values set in C1-01 to C1-08
[Acceleration/Deceleration Times].
• Set E2-01 [Motor Rated Current (FLA)]
correctly to the value specified by the
motor nameplate.
• Make sure that the motor cooling system
is operating correctly, and repair or
replace it if it is damaged.
• Adjust E1-04 to E1-10 [V/f Pattern
Parameters]. For motor 2, adjust E3-04
to E3-10. Decrease the values set in E1-
08 [Mid Point A Voltage] and E1-10
[Minimum Output Voltage].
Note:
If the values set in E1-08 and E1-10 are
too low, the overload tolerance will
decrease at low speeds.
oH4
Motor Overheat Fault
(PTC Input)
The motor has overheated. • Check the load level, acceleration/
deceleration time, and motor start/stop
frequency (cycle time).
• Decrease the load.
• Increase the values set in C1-01 to C1-08
[Acceleration/Deceleration Times].
• Set E2-01 [Motor Rated Current (FLA)]
correctly to the value specified by the
motor nameplate.
• Make sure that the motor cooling system
is operating correctly, and repair or
replace it if it is damaged.
• Adjust E1-04 to E1-10 [V/f Pattern
Parameters]. For motor 2, adjust E3-04
to E3-10. Decrease the values set in E1-
08 [Mid Point A Voltage] and E1-10
[Minimum Output Voltage].
Note:
If the values set in E1-08 and E1-10 are
too low, the overload tolerance will
decrease at low speeds.
oL1 Motor Overload
The load is too large. Decrease the load.
Note:
Reset oL1 when U4-16 [Motor oL1
Level] < 100.
The acceleration/deceleration
times or cycle times are too short.
• Examine the acceleration/deceleration
times and the motor start/stop
frequencies (cycle times).
• Increase the values set in C1-01 to C1-08
[Acceleration/Deceleration Times].