Mitsubishi Electric FR-A760-00840-NA User Manual (English)

Other manuals for Mitsubishi Electric FR-A760-00840-NA

Questions and Answers:

J
jamieriosAug 9, 2025
How to troubleshoot Mitsubishi Electric Inverter torque control issues?
- K
  Kaitlyn ZhangAug 9, 2025
  If the torque control isn't working correctly on your Mitsubishi Electric Inverter, here's what to check: * Ensure the motor or encoder wiring is in the correct phase sequence. * Verify that the Control method selection (Pr. 800) is properly configured. * Input the correct speed limit value (the motor won't rotate if this is set to 0Hz). * Confirm the torque command from the command device is accurate. * Consider decreasing the PWM frequency selection (Pr. 72) or increasing the Torque setting filter 1 (Pr. 826). * Recalibrate the Terminal 1 bias and gain commands for torque/magnetic flux (C16, C17, C18, C19). * If torque varies due to motor temperature, select magnetic flux observer by setting Pr. 95.
C
Christopher WallAug 16, 2025
Why does my Mitsubishi Electric FR-A760-00840-NA motor vibrate during acceleration/deceleration?
- R
  Raymond HarrisAug 16, 2025
  If you're experiencing vibration or inability to properly control torque during acceleration/deceleration with your Mitsubishi Electric Inverter, it might be due to the speed limit being activated. When Pr. 807 is set to "0, 2", the speed limit can change with the acceleration/deceleration time settings in Pr. 7 and Pr. 8. To resolve this, try reducing the acceleration/deceleration time or setting it to "0". This makes the speed limit dependent on the constant speed setting.
G
gcollinsAug 25, 2025
What to do if Mitsubishi Electric Inverter motor rotates opposite with small torque command?
- E
  Emily HernandezAug 25, 2025
  If the motor rotates in the opposite direction of the start signal when the torque command is small on your Mitsubishi Electric Inverter, the offset calibration of the torque command likely doesn't match. Recalibrate C16 Terminal 1 bias command (torque/magnetic flux) and C17 Terminal 1 bias (torque/magnetic flux).
B
Bobby BlankenshipAug 31, 2025
Why is the Mitsubishi Electric FR-A760-00840-NA Inverter output torque not linear?
- A
  Amanda HicksAug 31, 2025
  If the output torque isn't linear with the torque command on your Mitsubishi Electric Inverter, it could be due to insufficient torque. Try returning the excitation ratio in Pr. 854 to its initial value.

Mitsubishi Electric FR-A760-00840-NA Specifications

General

Model	FR-A760-00840-NA
Type	Inverter
Output Voltage	0-480 V
Phase	3
Control Method	Vector Control
Frequency Range	0-400 Hz
Protection Features	Overcurrent, Overvoltage, Undervoltage
Input Voltage	380-480V AC