6
6.2
Positioning mode (P0700 = 3, from SW 2.1)
6-383
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
Using the standstill monitoring function, it can be detected when the
axis leaves the target position (under load, for hanging axes, etc.).
The standstill monitoring time (P0325) is started after a motion block
has been completed (position reference value = target reference va-
lue).
After the delay time has expired, it is cyclically monitored as to whether
the position actual value remains within the defined standstill window
(P0326).
t
Positioning monitoring time P0320
Target
position
Position
value
x
Positioning window P0321
Position
reference
value
Position
actual
value
Standstill window
P0326
Standstill monitoring time P0325
Single evaluation for the
positioning monitoring function
From here, cyclic evaluation
of the standstill monitoring
Fig. 6-17 Standstill and positioning monitoring
When the standstill monitoring function responds, the drive is braked
down to standstill with the deceleration level set in P0104 (maximum
deceleration) and fault 135 (standstill monitoring) is signaled.
A changeover is made into the tracking mode.
The standstill monitoring function is disabled, if
a new traversing block is started
Tracking mode is selected
The standstill window has the value zero (P0326 = 0)
Standstill
monitoring
Mode of operation
Fault
Switching–off
6 Description of the Functions
01.99
! not 611ue !