Mitsubishi Electric 800 Series Instruction Manual page 375

 Tuning the second applied motor (Pr.574)
• When switching two different motors by one inverter, set the second motor in Pr.450 Second applied motor. (In the initial
setting, no second motor is applied. (Refer to
• Pr.574 is enabled when the Second function selection (RT) signal is turned ON.
Pr.
450 Applicable motor
453
Motor capacity (with the rated motor current equal to or lower 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 a second function selection signal. The RT signal also enables other second functions. (Refer to
343.) The RT signal is assigned to the terminal RT in the initial status. Set "3" in any of Pr.178 to Pr.189 (Input terminal
function selection) to assign the RT signal to another 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
Pr.71 Applied motor
Pr.80 Motor capacity
Pr.81 Number of motor poles
Pr.96 Auto tuning setting/status
Pr.178 to Pr.189 (Input terminal function selection)
Pr.190 to Pr.196 (Output terminal function selection)
374
5. PARAMETERS
5.10 (C) Motor constant parameters
page 230
page 351
page 145, page 353, page 363
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145, page
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353,
page 351.))
Description
353, page 363
page 363
page 343
page 297
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