Siemens SINAMICS S120 Function Manual page 253

Maximum velocity
The maximum velocity of an axis is defined using parameter p2571.
The velocity should not be set higher than the maximum speed 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:
S Jog mode
S Processing traversing blocks
S Direct setpoint input/MDI for positioning/setting-up
S 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:
S Jog mode
S Processing traversing blocks
S Direct setpoint input/MDI for positioning and setting-up
S 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 mul-
tiple integer steps (1 %, 2 % ... 100 %) of the maximum acceleration and decelera-
tion. In the mode direct setpoint input/MDI for positioning and setting-up, the acce-
leration/deceleration override (assignment 4000Hex = 100 %) is entered.
Note
A maximum acceleration or deceleration dependent on the actual velocity
(transitioned acceleration) is not supported.
© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition
2
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Extended Functions
Function module "basic positioner"
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