Efficient Networks Siemens Sinamics S120 - Manual (Page 72)

Servo control
3.5 Torque setpoint limitation
Drive Functions
72
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
5HYHUVH
PRWRULQJ
)RU
ZDUGV
PRWRULQJ
)RUZDUGV
JHQHUDWLQJ
EDFN
ZDUGV
JHQHUDWLQJ
7KHTXDGUDQWV
7RUTXHIDFWRU0LT
LTBVHWB
6HWSRLQWRIWKHWRUTXHJHQHUDWLQJFXUUHQW
(IIHFWLYHWRUTXHOLPLWV>1P@
LTOLPLWDWLRQFXWVRIIRYHUVKRRWLQJ
RIWKHILOWHU
U
U
Q
0
ದ
ದ
LTBVHWB
U
>@
>@
>@
>@
\
[
>$@
Figure 3-8 Current/torque setpoint limiting
Note
This function is effective immediately without any settings. The user can also define further
settings for limiting the torque.
Properties
The connector inputs of the function are initialized with fixed torque limits. If required, the
torque limits can also be defined dynamically (during operation).
● A control bit can be used to select the torque limitation mode. The following alternatives
are available:
– Upper and lower torque limit
– Motor and regenerative torque limit
● Additional power limitation configurable
– Motor mode power limit
– Regenerative mode power limit
● The following factors are monitored by the current controller and thus always apply in
addition to torque limitation:
– Stall power
– Maximum torque-generating current
● Offset of the setting values also possible (see "Example: Torque limits with or without
offset").
● The following torque limits are displayed via parameters:
– Lowest of all upper torque limits with and without offset
– Highest of all lower torque limits with and without offset