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
) do not apply to jogging
acceleration/deceleration ramps.
•
The inching functions activated through fieldbus (see parameter
, 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 288)
20.26 Jogging 1 start source (page 288)
,
20.27 Jogging 2 start source (page 289)
,
22.42 Jogging 1 ref (page 306)
23.20 Acc time jogging (page 314)
and
.
■
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)
Program features 101
Содержание ACS880 Series
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