Siemens SINAMICS S120 Function Manual page 473

Maximum velocity
The maximum velocity of an axis is defined using parameter p2571. The velocity should not
be set to be greater than the maximum speeds in r1084 and r1087.
The drive is limited to this velocity if a higher velocity is specified or programmed via the
override (p2646) for the reference point approach or is programmed in the traversing block.
Parameter p2571 (maximum velocity) defines the maximum traversing velocity in units 1000
LU/min. If the maximum velocity is changed, then this limits the velocity of a traversing task
that is presently being executed.
This limit is only effective in the positioning mode for:
● Jog mode
● Processing traversing blocks
● Direct setpoint specification / MDI for positioning and setting-up
● Reference point approach
Maximum acceleration/deceleration
Parameter p2572 (maximum acceleration) and p2573 (maximum deceleration) define the
maximum acceleration and the maximum deceleration. In both cases, the units are 1000
LU/s
Both values are relevant for:
● Jog mode
● Processing traversing blocks
● Direct setpoint specification / MDI for positioning and setting up
● Reference point approach
The parameters do not have any effect when faults occur with the fault responses
OFF1/OFF2/OFF3.
In the traversing blocks mode, the acceleration and deceleration can be set in multiple
integer steps (1%, 2% ... 100%) of the maximum acceleration and deceleration. In the "Direct
setpoint specification / MDI" mode for positioning and setting up, the
acceleration/deceleration override (assignment of 4000 hex = 100%) is specified.
Note
A maximum acceleration or deceleration dependent on the actual velocity (transitioned
acceleration) is not supported.
Note
When using the PROFIdrive telegram 110, the velocity override is already connected and
has to be supplied by the telegram.
Drive functions
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
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2
Function modules
8.8 Basic positioner
473