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Rockwell Automation Publication 750-UM006C-EN-P - March 2022
Chapter 4
Configure and Start Up the Drive
Use
00:70 [Autotune]
to conduct a Static Tune (2) or Rotate Tune (3)
and an Inertia Tune (4). The parameter
00:70 [Autotune]
description is
shown for more information.
8. With
00:70 [Autotune]
reading Static Tune (2), it conducts this test
the next time the drive is told to run or jog.
9. Initiate a Start command. Start can be commanded via the HIM or from
the Logix controller ladder logic.
70
Autotune
Provides a manual or automatic method for setting P73 [IR Voltage Drop], P74 [Ixo Voltage Drop] and P75 [Flux Current Ref]. Valid only when parameter P35 [Motor
Ctrl Mode] is set to 1 Induction SV, 2 Induct Econ, or 3 Induction FV.
Ready (0) – Parameter returns to this setting following a Static Tune or Rotate Tune, at which time another start transition is required to operate the drive in normal
mode. It also permits manually setting P73 [IR Voltage Drop], P74 [Ixo Voltage Drop] and P75 [Flux Current Ref].
Calculate (1) – Uses motor nameplate data to automatically set P73 [IR Voltage Drop], P74 [Ixo Voltage Drop], P75 [Flux Current Ref] and P621 [Slip RPM at FLA].
Static Tune (2) – A temporary command that initiates a non-rotational motor stator resistance test for the best possible automatic setting of P73 [IR Voltage Drop] in
all valid modes and a non-rotational motor leakage inductance test for the best possible automatic setting of P74 [Ixo Voltage Drop] in a Flux Vector (FV) mode. A start
command is required following initiation of this setting. Used when motor cannot be rotated.
Rotate Tune (3) – A temporary command that initiates a Static Tune followed by a rotational test for the best possible automatic setting of P75 [Flux Current Ref]. In
Flux Vector (FV) mode, with encoder feedback, a test for the best possible automatic setting of P621 [Slip RPM at FLA] is also run. A start command is required
following initiation of this setting.
Important:
If using rotate tune for a Sensorless Vector (SV) mode, the motor should be uncoupled from the load or results may not
be valid. With a Flux Vector (FV) mode, either a coupled or uncoupled load will produce valid results.
Inertia Tune (4) – A temporary command that initiates an inertia test of the motor/load combination. The motor will ramp up and down while the drive measures the
amount of inertia. This option only applies to FV modes selected in P35 [Motor Ctrl Mode]. Final test results should be obtained with the load coupled to the motor.
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.
ATTENTION:
This procedure causes movement of the motor shaft and of any
connected equipment. To guard against personal injury or damage to
equipment, verify that all guards are properly installed to help protect
against contact with rotating parts.
