Siemens SINAMICS S120 Function Manual page 306

Function modules
7.9 Basic positioner
● p2616[x] Block number
● p2618[x] Velocity
● p2619[x] Acceleration override
● p2623[x] Task mode
All continuation conditions are possible.
JERK
Jerk limitation can be activated (command parameter = 1) or deactivated (task parameter =
0) by means of the JERK task. The signal at the binector input p2575 "Active jerk limitation"
must be set to zero. The value parameterized in "jerk limit" p2574 is the jerk limit.
A precise stop is always carried out here regardless of the parameterized continuation
condition of the task preceding the JERK task.
The following parameters are relevant:
● p2616[x] Block number
● p2622[x] Task parameter = 0 or 1
All continuation conditions are possible.
WAITING
The WAIT order can be used to set a waiting period, which should expire before the
following order is processed.
The following parameters are relevant:
● p2616[x] Block number
● p2622[x]Task parameter = delay time in milliseconds ≥ 0 ms
● p2623[x] Task mode
The delay time is entered in milliseconds - but is rounded-off to a multiple of the interpolator
clock cycles p0115[5]. The minimum delay time is one interpolation clock cycle; this means
that if a delay time is parameterized, which is less than an interpolation clock cycle, then the
system waits for one interpolation clock cycle.
Example:
Wait time: 9 ms
Interpolation clock cycle: 4 ms
Active waiting time: 12 ms
A precise stop is always carried out here before the wait time regardless of the
parameterized continuation condition of the order preceding the WAIT order. The WAIT task
can be executed by an external block change.
Possible continuation conditions include END, CONTINUE_WITH_STOP,
CONTINUE_EXTERNAL, CONTINUE_EXTERNAL_WAIT, and
CONTINUE_EXTERNAL_ALARM. The fault message is triggered when "External block
change" has still not been issued after the waiting time has elapsed.
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Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Drive functions