It is possible to select scalar control as the motor control method instead of Direct
Torque Control (DTC). In scalar control mode, the drive is controlled with a frequency
reference. However, the performance of DTC is not achieved in scalar control.
It is recommended to activate the scalar motor control mode in the following
situations:
• In multimotor drives: 1) if the load is not equally shared between the motors, 2) if
the motors are of different sizes, or 3) if the motors are going to be changed after
motor identification (motor ID run)
• If the nominal current of the motor is less than 1/6 of the nominal output current of
the drive
• If the drive is used without a motor connected (for example, for test purposes)
• If the drive runs a medium-voltage motor through a step-up transformer.
In scalar control, some standard features are not available.

This product is designed to be connected to and to communicate information and
data via a network interface. It is Customer's sole responsibility to provide and
continuously ensure a secure connection between the product and Customer
network or any other network (as the case may be). Customer shall establish and
maintain any appropriate measures (such as but not limited to the installation of
firewalls, application of authentication measures, encryption of data, installation of
anti-virus programs, etc) to protect the product, the network, its system and the
interface against any kind of security breaches, unauthorized access, interference,
intrusion, leakage and/or theft of data or information. ABB and its affiliates are not
liable for damages and/or losses related to such security breaches, any
unauthorized access, interference, intrusion, leakage and/or theft of data or
information.
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