Page 73 of 102
TVL 351
ISSUE 15
(Note the regulator is not input phase sequence conscious). Carry out a check of motor phasing and encoder wiring,
ensure these are as per the schematic diagrams.
Autotune Procedure
In order to optimise control of the motor, the values used within the motor model require to be optimised. Drives will
be provided programmed by TVC with all available motor data; however, performance can be improved via
measurement of actual motor parameters. A facility is provided by the drive to dynamically measure motor data –
the “autotune” function. The following procedures are carried out prior to the fitting of ropes.
Precautions
These instructions should be read in their entirety before proceeding. It is the responsibility of the
competent person to take all precautions as required when conducting the following procedures.
A rotational autotune is recommended. If a stationary autotune is used and problems are
experienced a rotating autotune must be carried out.
It is important that the lift car is prevented from moving whilst a rotational autotune is being
conducted and that the motor shaft can revolve freely. This normally implies that the lift is
adequately secured in the well to prevent movement and the ropes lifted from the drive sheave
and additionally that the brake is lifted.
Ensure that no fault condition is present and follow the flow chart below, depending if the setup is Gearless
Permanent Magnet (RFC-S) mode or Closed Loop Geared or Gearless (RFC-A) or Open Loop:
Note: Some Gearless Permanent Magnet (RFC-S) motors have low saliency. In this instance a Stationary autotune
will fail to calculate the encoder phase offset value correctly. TVC advises a rotational tune on a permanent magnet
motor. This is the only guaranteed way to learn the motor parameters correctly.
The autotune should be carried out 3 times to make sure consistent values are measured. The following parameters
should be noted on each tune and compared for consistency.
All modes: RFC-A / RFC-S / Open Loop (RFC-A Sensor less) – Stationary and Rotating Autotune
#B33 Transient Inductance
#B34 Stator Resistance
Mode: RFC-S - Rotating Autotune only
#C13 Position Feedback Phase Angle
Note: Prior to starting a stationary Autotune fit a link across terminals 41/42 (Run Output of the
E300 drive). This is to stop the drive terminating the Autotune before completion.
Make sure the drive does not trip with AUTOTUNE STOPPED for a successful tune.
REMOVE THE LINK ONCE THE AUTOTUNE IS COMPLETE!
For clarification that a successful Autotune has been completed, it is recommended that the Drive Trip Log is reset
before carrying out an Autotune. Upon completion the Trip Log should be checked to confirm an error was not
logged. This can be done by turning parameter #L39 (Reset Trip Log) On. The parameter will instantly turn off. To
confirm the reset was done correctly check parameter #L29 (first trip in logger) it should display “None”.
To Next Page
Loading...
