Siemens SIMODRIVE 611 universal Function Manual page 384

6 Description of the Functions
6.2 Positioning mode (P0700 = 3, from SW 2.1)
Table 6-28 Parameters for the standstill monitoring function
No.
0325 Standstill monitoring time
This parameter defines the time after which, when approaching the position, the following error
must be within the standstill window (P0326).
Note:
S
The standstill monitoring time is rounded–off in the drive to an integer multiple of the posi-
tion controller clock cycle (P1009).
S
If a larger value is entered in P0325 than in P0320, this is limited internally in the drive to
P0320.
0326 Standstill window
This parameter defines the standstill window, within which the position actual value must be
located after the standstill monitoring time has expired (P0325).
0 Standstill monitoring is de–activated
w 1
Standstill monitoring is active with this value
Standstill and
positioning
monitoring
6-384
Name
0
0
There are the following differences between the standstill and positio-
ning monitoring:
S
Standstill monitoring (zero–speed monitoring)
After the standstill monitoring time has expired, the system cycli-
cally checks whether the axis remains within the standstill window
around the target position.
Objective: Continually checks that the position is maintained
S
Positioning monitoring
For this monitoring function, after the positioning monitoring time
has expired, it is checked once whether the actual position lies
within the positioning window around the target position.
Objective: Single check as to whether the position has been
reached with sufficient accuracy
Note
The following is valid when setting the standstill and positioning
monitoring:
S
Standstill monitoring time v positioning monitoring time
(P0325 v P0320)
S
Standstill window w positioning window
(P0326 w P0321)
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
Min. Standard Max.
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200 20 000
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