74 Program features
jogging frequency reference is provided by 28.42 Jogging 1 frequency ref and 28.43
Jogging 2 frequency ref.
Two jogging functions (1 and 2) are available, each with their own activation sources
and references. The signal sources are selected by parameters 20.26 Jogging 1 start
source and 20.27 Jogging 2 start source. When jogging is activated, the drive starts
and accelerates to the defined jogging speed or frequency along the defined jogging
acceleration ramp (23.20 Acc time jogging). After the activation signal switches off,
the drive decelerates to a stop along the defined jogging deceleration ramp (23.21
Dec time jogging).
The figure and table below provide an example of how the drive operates during
jogging. In the example, the ramp stop mode is used (see parameter 21.03 Stop
mode).
Jog cmd = State of source set by 20.26 Jogging 1 start source or 20.27 Jogging
2 start source
Jog = State of source set by 20.25 Jogging enable
Start cmd = State of drive start command.
Phase
Jog
cmd
Jog
Start
cmd
Description
1-2 1 1 0 Drive accelerates to the jogging speed along the acceleration
ramp of the jogging function.
2-3 1 1 0 Drive follows the jog reference.
3-4 0 1 0 Drive decelerates to zero speed along the deceleration ramp
of the jogging function.
4-5 0 1 0 Drive is stopped.
5-6 1 1 0 Drive accelerates to the jogging speed along the acceleration
ramp of the jogging function.
6-7 1 1 0 Drive follows the jog reference.
2314568 11 13141516
t
71891210 17
Jog cmd
Jog
Start cmd
Speed/
Frequency
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