Mitsubishi Electric FR-E800 Series Instruction Manual page 364

NOTE
• To perform the online auto tuning at startup for a lift, consider using a brake sequence function for the brake opening timing
at a start. The tuning takes about 500 ms at the most after starting. However, during this time, it is possible that not enough
torque is provided and caution is required to prevent the object from dropping. (Refer to
• Perform online auto tuning at startup when the motor is stopped.
• The online auto tuning is disabled when the MRS signal is being input, the setting speed is Pr.13 Starting frequency or lower
(V/F control, Advanced magnetic flux vector control), an inverter fault is occurring, or the inverter's startup condition is not
satisfied.
• Online auto tuning does not operate during deceleration and restart from DC injection brake operation.
• It is disabled during JOG operation.
• If automatic restart after instantaneous power failure is selected, automatic restart is prioritized. (Online auto tuning at startup
is not performed during frequency search.)
• Zero current detection and output current detection are enabled during online auto tuning.
• The RUN signal is not output during online auto tuning. The RUN signal is turned ON at operation startup.
• If the time between the inverter stop and restart is within 4 seconds, tuning is performed at startup but its result will not be
applied.
 Start-time tuning completion (Y39) signal
• The start-time tuning completion (Y39) signal can be output when the start-time tuning completes.
• To use the Y39 signal, set "39" (positive logic) or "139" (negative logic) in any parameter from Pr.190 to Pr.196 (Output
terminal function selection) to assign the function to an output terminal.
Output frequency (Hz)
Start signal
Tuning status
Y39 signal
NOTE
• Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
 Tuning the second motor (Pr.574)
• When one inverter switches the operation between two different motors, set the second motor in Pr.450 Second applied
motor. (In the initial setting, no second motor is applied. (Refer to
• Perform tuning using Pr.574 Second motor online auto tuning.
• Pr.574 is enabled when the Second function selection (RT) signal is turned ON.
Pr.
450 Applied motor
453
Motor capacity (with the rated motor current equal to or less than the inverter rated current)
454 Number of motor poles
*1 If a motor with substantially low rated current compared with the inverter rated current is used, speed and torque accuracies may deteriorate due
to torque ripples, etc. Set the rated motor current to about 40% or higher of the inverter rated current.
NOTE
• The RT signal is the Second function selection signal. The RT signal also enables other second functions. (Refer to
To use the RT signal, set "3" in any parameter from Pr.178 to Pr.189 (Input terminal function selection) to assign the
function to an input terminal.
• Changing the terminal assignment using Pr.178 to Pr.189 (Input terminal function selection) may affect the other functions.
Set parameters after confirming the function of each terminal.
Parameters referred to
Pr.9 Electronic thermal O/L relaypage 238
Completed
Tune
Description
page 370).
Time
page 340.))
*1
14. (C) Motor Constant Parameters
11
12
13
14
15
16
17
18
19
20
page 328.)
363
14.4 Online auto tuning