Settings And Diagnostics; Scalar Motor Control - ABB ACS880 Firmware Manual

Note:
• Jogging is not available when the drive is in local control.
• Jogging cannot be enabled when the drive start command is on, or the drive
started when jogging is enabled. Starting the drive after the jog enable switches
off requires a fresh start command.
WARNING!
If jogging is enabled and activated while the start command is on, jogging
will activate as soon as the start command switches off.
• If both jogging functions are activated, the one that was activated first has
priority.
• Jogging uses the speed control mode.
• Ramp shape times (parameters 23.16...23.19) do not apply to jogging
acceleration/deceleration ramps.
• The inching functions activated through fieldbus (see parameter 6.1, bits 8...9)
use the references and ramp times defined for jogging, but do not require the
jog enable signal.

Settings and diagnostics

Parameters: 20.25 Jogging enable (page
20.27 Jogging 2 start source (page
2 ref (page 306), 23.20 Acc time jogging (page 314)
jogging (page 314).
￭

Scalar motor control

It is possible to select scalar control as the motor control method instead of DTC
(Direct Torque Control). In scalar control mode, the drive is controlled with a speed
or frequency reference. However, the outstanding performance of DTC is not
achieved in scalar control.
It is recommended to activate scalar motor control mode
• 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, or
• in multimotor drives, if
• the load is not equally shared between the motors,
• the motors are of different sizes, or
• the motors are going to be changed after motor identification (ID run)
288), 20.26 Jogging 1 start source (page
289), 22.42 Jogging 1 ref (page
Program features 101
306), 22.43 Jogging
and 23.21 Dec time
288),