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78 Rockwell Automation Publication 520-UM001G-EN-E - September 2014

Chapter 3 Programming and Parameters

Basic Program Group (continued)

P040 [Autotune] Related Parameter(s): P034, P039, A496, A497

Stop drive before changing this parameter.

Enables a static (not spinning) or dynamic (motor spinning) autotune to automatically set the motor parameters. Start must be pressed to begin the routine. After the routine is

complete the parameter resets to a zero. A failure (such as if a motor is not connected) results in an Autotune Fault.

Options 0 “Ready/Idle” (Default)

1 “Static Tune” A temporary command that initiates a non-rotational motor stator resistance test for the best possible automatic setting of A496

[IR Voltage Drop]. A start command is required following initiation of this setting. The parameter returns to 0 “Ready/Idle”

following the test, at which time another start transition is required operate the drive in normal mode. Used when motor cannot

be uncoupled from the load.

2 “Rotate Tune” A temporary command that initiates a “Static Tune” followed by a rotational test for the best possible automatic setting of A497

[Flux Current Ref]. A start command is required following initiation of this setting. The parameter returns to 0 “Ready/Idle”

following the test, at which time another start transition is required to operate the drive in normal mode. Important: Used when

motor is uncoupled from the load. Results may not be valid if a load is coupled to the motor during this procedure.

IMPORTANT

All motor parameters in the Basic Program group must be set before running the routine. If a start command is not given (or a stop command is given) within

30 s, the parameter automatically returns to a zero and an Autotune Fault occurs.

ATTENTION: Rotation of the motor in an undesired direction can occur during this procedure. To guard against possible injury and/or equipment damage, it is

recommended that the motor be disconnected from the load before proceeding.

P041 [Accel Time 1] Related Parameter(s): P044, A439

Sets the time for the drive to accelerate from 0 Hz to P044 [Maximum Freq].

Accel Rate = [Maximum Freq] / [Accel Time x]

Values Default: 10.00 s

Min/Max: 0.00/600.00 s

Display: 0.01 s

Speed

Time

[Maximum Freq]

[Accel Time x]

[Decel Time x]